User's Manual

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349:04

HEWLETT

Summary of content (298 pages)

PAGE 1
o .(D s c L o P E R A T 7:' ;s, ruG AFiä3 s € R t v t # f f i M A r ug-FA l- MUITIM ETER ;;:'' tt,,,,t, 349:04 ?i'-" ';i: ' ; HEWLETT PACKARD T !-, ö . , A (o. D=.
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HEWLE"WPACKARD C ER T IF IC A T O I tII The Hewlett-Paclnrd Companycertifins that this instrammt was thoroughly tested,ond.inspectedand fourd to meet its pu,blished specificationswhm it wasshippedlrom the factorU.The HewlettPaclard Com,panyfurther certifies tlmt its calibration rneo$rem,mts are traceableto the U.S. Natiornl Bureau of Standardsto tlrc ertmt allowed by the Brneau's calibrationfacility.
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v OPERATING AITDSERYICEMAIIUAI ManualPartNo. 03490-90014 MicrofichePartNo. 03490-90064 M O D E3L4 9 0 A M UtTIM ETER The main body of this manualappliesto SerialPrefix 1211A !;:,' ;.t; .: :i; : -: '. !:.. " :::: Any changesmade in instrumentsmanufacturedafter this printing will be found in a "Manual Changes"supplement supplied with this manual. Be sure. to examine this supplement,if one exists for this manual, for any changes which apply to your instrument and recordthesechangesin the manual.
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Tableof Contents Model3490A TABLE O FCONTENTS Section GENERALINFORMATION... I. Introduction l-1. l - 5 . S p e c i f i c a t i o .n.s. . l-8. Options l-10. AccessoriesSupplied l-12. AccessoriesAvailable l-14. Instrument and Manual Identification Page ......I-1 ...1-l .'-.l-l -......1-1 ...1-l ...1-1 ......1-2 Page Section . . . . . .2-I . . A N D I N T E R F A C E INSTALLATION II. ..-2-l Introduction 2-l....2-l 2-3. Initiallnspection.. - . .2-l 2-5. PowerRequirements . . . . . ..
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Table of Contents Model34904 (Gont'd) TABLE0F C0NTENTS Section page Page SectionIV (cont'd) IV. T H E O R Y O F O P E R A T I .O N ........4-I 4 - 1 3 0P . o w e r S u p p l i .e. s. ...4-15 4-1. Introduction ...4-l 4-132.Self-TestFunction ....4-16 4-3. General Theoryof Operation . . .4-l 4 - 1 3 4 . L o g i c T e s t , NIo .. ..+16 4-5. SignalConditioningCircuits . . . . . . . . 4-l + 1 3 7 . l O V R a n g e Z e r o , T e s t2N .o... . . . + 1 7 4-7. ReferenceVoltages ...4-l 4-139. TurnoverError, TestNo.
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Model3490A Table of Contents rABLEOFCONTENTS (Cont,d) Page Section SectionV (cont'd) page VII. TROUBLESHOOTING Method AND Ätemate . . ... .5-2 5-18. CIRCUITDIAGRAMS .......7-l 5 - 2 O - D 0 C o m m o n - M o d e R e j e c t i o. .n. T . . e. 5s-t2 7-1. Introduction 5 - 2 2 .A 9 C o m m o n - M o d e R e j e c t i o n . .T. .e. .s5t 4 ...7-l 7-3. Preliminary Troubleshooting Rejection Test.. ......54 ... ... . . .7-l 5-24-AC Normal-Mode 7'5. TroubleshootingTrees ........7-l 5-26.
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Model34904 Table of Contents L I S TO FI L L U S T B A T I O N S Page Figure Figure Page 2-1. Line Voltage Selection . . .2-l 4-23. WaveformsIllustrating . .s .......2-l 2 - 2 . P o w e r C o r d C o n f i g u r a t i .o. n Acquire/HoldMode. ......4-22 2-3. Model3490ADimensions ......2-2 4-24. Simplified Diagramand 24. Installation of IsolatedBCD Output O p e r a t i o n oSf / H C i r c u iAt . . . . ....4-23 . . .. . .. .2-3 a n d R e m o t eO p t i o n s 4-25. SimplifiedDiagramof S/H Circuit B . . . . .
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Model3490A TableofContents L I S T0 F t L L U S T R A T | 0(N CS ont,d) Figure Page 7-22. SchematicDiagram, Referenceand Ratio Circuits,Al, Al3 7431:144 7-24. SchematicDiagram,Main Logic, Al . . . . .745;1746 7-23. SchematicDiagram, Clock a n d C o u n t e r s , A l. . ...7_47174g 7-25. SchematicDiagram, DC Switchins L o g i c , A l. . . . . : . ' -7-26. SchematicDiagram,power Suppli€s, 41, A8 Figure 7-i+. schematic Diagram, sample/Hold A n a l o s C i r c uAi t2s7, ' . . . . . . . 7-35.
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Model34904 SectionI sEcTt0N I GENERATINFORMATION 1 . 1 l.N T B o D u c T l 0 N . l-2. The Model 3490A Multimeter makesac voltage,dc voltage, and resistancemeasurementswith 5-digit resolution. It is capable of overrange measurementsup to l2O% of range on all except the 1000V ac and dc ranges. Polarity selection and display are automatic. Range selection is manual or automatic over all ranges on all functions.
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SectionI Model 3490A most of the 3490A logic IC's for use with the -hp lO529A Logic Comparator.Using theseboardswith the Logic Comparator,a faulty IC can be isolatedin seconds without removingit from the circuit. A spareparts set, -hp- 11127A, is available for the 3490A. This set contains the most critical components of the 3490A such as integrated circuits, transistorsand reed relays. Three interface cables are available for the GPIB Option 030. Thesecablesareidentical except for length.
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Model3490A SectionI Table 1-1. Specifications. DCVOLTAGE Display: . Full-Rangp :1P9P.Y r 10O.oOo v v i I;IBBBB V . rooo.öö Overrange:2O % onall rangesexcept 1000 V range Aeuracy: t l% of reading+ Toof rangel .1 V Range 24 hours {23oc ! loc) 30 days (23oc1soc) 90 days (23oc r5()c, 6 months {23ocisocf 1 year {23oc!soc) Temperature Coefficient l0o C to reading+ 0.001 % of range)F C Voltage Coefficient (1000V range): Add 0.
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Model34904 SectionI (Cont'd). Table1-1. Specifications RATIO (Option 0801 / External Reference Ranges: 1 V : 1 O . 1V t o t 1 . 2 V 10V: tlVto112V {1 V range should be used for greater accuracy if the Ext- Ref' voltage is between 1 V and 1.2 V. Ratio Measurement Input Configuration: 3 wire; External Reference Low is conlmon with Input Low. External Reference High may be positive or negative with respect to Low. I nput Ratio = Ext. Ref. Input Ranges: DC: o.
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Model34904 SectionI Table1-1. Specifications (Cont,d.) SAMPLE/HOLD(OPtion040/0451 Full-rangeDisplay: r 1.00fi)v + 10.q)0v ! 100.00V r 1000.0v Sample/Hold MeasurementAccuracy (DC function, I V through 1ü)0 V ranges!: Sample/Hold measurement displar/ is 4 full digits plus overrange "1 ", Ovrrangs: 2O%on all range5exceptIOOOV range. 24 hours(23oc r 10 c) 30.
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Model 34904 SectionI Table1-2. Generallnformation(Cont'd.) dVs/u SAMPLE HOLD (CONT'DI Slope of signal as measured in increments small enough that the waveform between measurement points approaches or achieves linearitV. K1 = Velocity factor. The typical factor for each range is as follows, Sample/Hold AC Characteristics: Maximum rate of change of input voltage to maintain tracking: 2.5 % of range/ps on the 10 V and 10OOV ranges. 5 % of range/prson the 1 V and 10O V ranges.
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Model3490A SectionII S E C T I OtNl INSTATI.ATION AND I N T E R F A C E 2. r.| N T R 0 DCtT l o N . r- I IOOV--r r-r 20v-l i I l Lzqov----l il 2-2. This section contains information and instructions necessaryfor installing and interfacing the Model 3490A Multimeter. Included are initial inspection procedures, power and grounding requirements,environmental information, installation instructions, interconnection procedures, and instructions for repackagingfor shipment.
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Model 3490A SectionII 2 . 1 6 I. N S T A L L A T I O N . c. Install 03490-60306 Isolated BCD Module in the right opening in the instrument guard using screws provided(seeFigure2-4). 2-17.Bench Use. 2-18. The Model 3490A is shippedwith plasticfeet and tilt stand in place,ready for use as a bench instrument. The front of the instrument may be elevated for convenience of operating and viewing by lowering the tilt stand.
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SectionIl Model3490A (F OUTGUARDREMOTE I 03490- 665t2 A 8 JI O aa,rs I cABLE w7 l<- 03490-66510 - / . f--:| ISOLATED BCD MODULE 05490 - 60306 TSoLATEDREMOTE MOOULE03490- 60308 r-l r f | -J- f i l_J I --\ Ii ;<-caBLE t . rY6 \ ;' + C A B L E W 4 _ _ _ / - E -_ 03490-56511 AIJ7 f-1 T N G U A RBDc D JJiJV-99JWt AI.J8 Figure24. Installationof lsolatedBCD Output and RemoteOptions. W7 betweenthis assemblyand the outguard side of the IsolatedRemoteModule (seeFigure 24). g.
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SectionII 7N Model34904 i 3i -s t** {JrJ ü,1t; TA OUTPUTCOTruECTOR.IO oPTtoN021 ,^j ä Fc ö- 8 : i : ^6 js3 Ed z 9 = : = = ä q z : ! ; 9 e F e2 2 i Mating Connector: -hp- Part No. 1251€086 Amphenol No. 57-30500-378 8 8 8 5 9 9 6 < ?ä;-;03":' Y 3 E K B ö? l; gai äEä F ä = ; 5 LOGIC LEVELS Output Lines: HIGH = + 39 V t 1.5 V,4OOpA rnax. LOW = + 0.3 V r 0J V, lS mA rnax. Input Lines: HIGH = + 3.9 V a 1.5 V, 10OrrA max. LOW = +O.3 V r O.3V, 2 mA rnax. High Reference= + 5.
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Model34904 SectionII REMOTEINPUTCONNECTOR J7 oPTtoN 022 F E l o "2 rE=ä;: e t : Fu E 36 sXi ä: I - 5 2H* EI = ; ? 3 5 fr i F 3 ä - 3q d9E H ;;5EEiF== 34904-B-296a ä-j=!9il äEHäEä t : L i t r E F ! ! A = * - I q c . < = * LOGIC LEVELS . lnput Lines: HIGH = + 3.9 V t 1.5 V, 100 pA rnax; or open circuit LOW = + 0.3 V I 0.3 V, 2 mA rnax.; or contact closure to ground through < 300 A. Output Lines: HIGH = + 39 V j i.S V, 400 pA nnx. LOW = + 0-3 V 1 0.3 V, 15 mA max.
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SectionII Model 3490A connector J7 is -hp- Part No. l25l{084 (Amphenol 57-30360-375). This connector is supplied with the Remote Control option 2-34.RearInput. 2-35. Options 020 and 030 provide a rear panel input connector in parallelwith the front panel terminals.This connector is shown in Figure 2-1. The inner guard of the 3490A Rear Input connector is internally connectedto pin B. Do not connect thesepoints togetherexternally. The mating connector for this rear panel input is -hpPart No.
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Model3490A SectionII Table 2-2. GeneralPurposeInterfaceBusConnectors. Description Mates with -hp- Part No. Amphenol No. 51-30240 A. Cable to chassisplug with hood and clamp Rearpanelor with B or D. 1251-0293 B. Cable to chassisReceptacle with hood and clamp AorC '1251-0431 a Rack and panel plug Rearpanelor with B or D. 1251-0389 57-10240 D.
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Model3490A SectionII T R I G G E RC O N N E C T O JRl 1 E U t J J E !2 9 lg V g = F C MatingConnector: *rp- PartNo. 1251.0142 AmphenolNo.57-30141 E J F - v F L Sample/Hold TTL Trigger: L O W i n p u t l e v e l ( ( + 0 . 4 V ) f o r a t l e a s t3 0 n s t r i g g e r s Sample/Hold circuits and/or triggers 34904 to take a reading.
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Model3490A Section II is -hp- Part No. 1252-0084 (Amphenol a. Wrap the instrument in heavy paper or plastic beforeplacingin an inner container. 245. Sample/Holdwith GPIB Option 030. Figure2-10 shows the Trigger Connector, Jll, and describesthe trigger signals. The mating connector is -trp- Part No. 125l-0142 (Amphenol 57 -3014 l). b. Place packing material around all sides of the instrument and protect panel face with cardboardstrips or plasticfoam. for J7 s7-30360-37s). 2 . 4 6 .
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Model3490A SectionIII 1 . Line Switch, push on/push off. 2. J. 4. .'^". Sample Rate Control. Maximum sample rate is selected in clockwise position. Each counterclockwise step adds a known delay. Manual Trigger Pushbutton in center of Sample Rate control. Sample/Hold Switch (Option o4o/045). Selects Sample/ Hold mode. 5 . Ratio Switch (Option 0801. Selects internal or external referen@. . i\- ._.8. 9. Guard terminal, InPut terminals. 10. Function Switch. 1 1 . T h e r m a l A d j u s t .
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SectionIII Model3490A S E C T I OIN II O P E R A T I NI N GS T R U C T I O N S 3 - 1 .I N T R 0 D U C T I 0 N . 3-2. This section contains instructions for using the Model 34904 Multimeter to make dc voltage, ac voltage and resistance measurements.It also includes instructions for sample/hold and ratio measurements,remote control and data output. Basic operating instructions may be found on a pull-out card at the bottom edgeof the 3490A front Panel. LITIES. CAPABI 3.3.INSTBUMENT I nstrument. 3-4.
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SectionIII Model3490A Table 3-1. Maximum Voltages. Maximum Voltage Between Input HIGH and LOW Between fi Signal HIGH and LOW Between either LOW terminal and Guard Between Guard and Chassis 100OVrms 250 Vrms 2O0 V peak 500 V peak 3 . I7 . G E N E R AOLP E R A T I N I NGS T R U C T I O N S . 3-18.Turn-On andWarm-Up. 3-19.
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Model3490A Measürements. 3-26.0verrange 3-27. Measwements within rated accuracy are possible up to 120 7o of runge on all except the 1000 Vac or dc ranges. Overrange inputs on these rangeswould exceed the maximum allowable input voltage. The display includes the overrange"1" as the sixth digit. Indication. 3-28.Overload 3-29. lf the measurementis 120 % of nnge or geater, the Overload "OL" annunciator will light. The numerical displaywill read 120000to 120005. Indication. 3-30.Bange 3-31.
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Model3490A SectionIII bar or a large solid copper wire, and adjust AlR429 (Thermal Adj) for zero display. AlR429 is accessible through the rear panel. If the 3490A has the rear input connector, loosen the hinged cover to gain accessto AlR429. Be wre to connect the Guard Terminal and to observe the maximum voltage limitations noted on the front panel and in Table 3-1, or damage ta the instrument may rewlt. Bange. 3-50.Frequency 3-51.
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Model3490A SectionIII Be sure to connect the Guord Terminal and to obserye the maximum voltage limitations noted on the front panel and in Table 3-1, or damage to the instrument may result. Rate control must be set to Hold, or a continuousLow signalappliedto the Hold connectionat either rear panel connector. The External Encode signal logic levels and timing requirements are shown in Figure 34. The High to Low transition of External Encodeand Data Flae can occur simultaneously. HOLD 3-58.
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Model34904 SectionIII Column -_-_ll- 10 9 4 7 6 5 4 3 2 1 0 v 3 0 1 2 3 0 0 l+ Numerical I I Readino L *"nn" F unction Polarity/Overload Sample/Hold Mode Figure3-5. Option 021 Printout. 3-70. The Data Flag @rint Command) output signal changes from LOW to HIGH at the beginning of a measurement,and returns to LOW at the completionof a reading cycle. If the instrument is operatingin the autorangemode, Data Flag remainsHIGH until after one reading has been completed on the correct range.
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Model34904 SectionIII 3-89. The operating instructions contained in this section include addresscodes and addresscode selection, program codes, output format, and timing sequence information. The GPIB system uses the ASCII (American StandardCode for Information Interchange)eightbit octal codein a parallelbit, serialcharacterform. REIUOTE ENAELE PROGRAI\,I LINES PROGRAM EXECUTE PROGRAM 349A.
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SectionIII 3-96. DAV. After the talker places data on the data lines, it must set DAV LOW to indicate that the datais vatid. A listener may not processdata until DAV goes LOW. DAV cannot be set HIGItr again until DAC goes HIGH, indicating that all listenershave finished processingthe data. 3-97. DAC. When all listenershaveaccepteddata, DAC goes HIGH, indicating to the talker that the data is no longer needed.
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SectionIII Model3490A Table3-6. AddressCodes.
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SectionIII Model34904 Table 3-7. ProgramCodes. CHARACTER USE OCTAL CODE b1 BINARY CODE b6 b5 ba R 1 2 3 4 5 6 7 RangeProgramldentifier 10,00Okf); Test 7 1,000 kQ; l OOOV; Test 6 100 kO; 1OOV; Test5 10 kQ; 10 V; Test 4 1 kS2;1 V; Test 3 .1 kO; .
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SectionIII Model3490A MRE Data Lines Programdata from controller LDAV lndicates to 34904 that data is available HRFD 349OA will accept data 349OA is busy and will not acceptdata 349OA hasaccepted and is processing data 34904 will aocept new data 3490A busy 3490A finished processing data Figure3-8. Timing Diagram,3490A Addressedto Listen. not output the reading. A new reading is initiated by reprogramming the 34904 or by going to local control. 3-118. M3, AddressedSinglewith Output.
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SectionIII Model3490A MRE Data Lines LDAV HRFD Printerand 3490A will acceptdata 390A and printer will not accept data Printer and 34904 processingdata 349OAand printerwill acceptdata 34904 and printer finished processingdata 3490A and printer will not accept data 34904 and printer processing data Printer will not accept data Printerand 34904 finished processingdata Figure3-9. Timing Diagram,3490AAddressed to Talk. outputted in the following format: (Example listing: NDCfXXXXXXE-Y).
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Model3490A SectionIII 3-130. If the 3490A has requested service and is addressedto talk but not sent the SPEcommand, it will not transmit a status code but will output the reading data if programmedfor output (Ml, M3, M5, or M7). ExamPle. 3-131.GPIB0perating 3-132. The following example uses a Hewlett-Packard Model 9820A as both controller and printer. The 98204 must be equippedwith the lll44a Interface,and must have the Peripheral Control II ROM Block installed in the proper ROM block slot.
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SectionIII Model 3490A 3-135. Suppressionof CR and LF. When outputting programminginstructions from the 9800 seriescalculators without using the CMD statement, the Carriage Return (CR) and Line Feed (LF) normally output by the calculator must be suppressed. If not, they are seen as two programmingcharactersby the 3490A. CR and LF may be suppressed in the 9820 by transmitting,Z at the end of the instructions. In the 9830, they may be suppressed by sendinga semicolon. STORE Endscalculatorprogram.
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Model3490A SectionIII rffi'slisli r.l.i...l*jiiä='8ffifr 349OA lrrruE SEETABLE 3.7 NO. I )tEr co0E iLEAR 2 7 - l 2C.C, B L A N KL I N E + 3 9 ,21 ],'ir z o or o o l 4 0 z o r o l + Ei! r r l f l E T I PRoonnvr E z I - r r rir alr r r E El =!n E r r EIE trf r I r c= c= C : I 06l Etrf F toG E 6 R 0,60 t22 I E r EIt:] E -rtrl i trfIfl [f E 4 o64 E E r r: E = I to M l l I t5 06t l? E to5 I - - E E 13 - l - r c:lr E .
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SectionIII Model34904 3-149. Sample/Hold AC Trigger. This ac coupled command has the same effect as the Sample/Hold Trigger command (TTL). This signal must be a negative-going pulse at least 30 nanosecondswide with an amplitude between 2Y and 200 V. The signal must be static at least 2 ps prior to the negativetransition. 3-150. Hold Command. This is an intemal commandto a Sample/Holdamplifier,resultingin a Hold mode. Hold A command switches Amplifier A and Hold B switches Amplifier B.
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SectionIII Model3490A 3-162. Sample/HoldTrigger (TTL). Compatibility with TTL logic circuits requiresthis signalgo be from HIGH (>+ 2.4 V) to LOW ((+ 0.4 V) for a minimum of 30 nanosecondsin order to initiate a Hold mode. The signal must be HIGH for at least 600 ps prior to going LOW. The external triggering circuit must be capableof sinking I mA at (+ 0.4 V. 3-163. AC Trigger. The leadingedgeof a negative-going pulse at least 30 nanosecondswide and 2 V to 200 V in amplitude initiates a Hold mode.
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SectionIII Model3490A pose Interface Bus controi, the 3490A should be programmed for Next External Trigger (T2). When Next External Trigger is programmed, upon completion of a measurement the GPIB circuits wait for an External Trigger command. Either of the Sample/Hold Trigger inputs at Jll providesan External Triggercommand to initiate a measurementat the sametime a Hold mode is initiated. 3-173.Using theTrack/Hold Mode. 3-174. Digitizing a Ramp.
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SectionIII Model3490A TNPUTVOLTAGEAT T I M EO F S / H T R I G G E R , t VOLTAGEACTUALLY MEASURED. / l / l I I I IA A T V S r = ANALOG DELAY = SAMPLE/HOLD T R I G G E R( T R A C K / H O L D MODE) = VOLTAGEMEASURED = S L O P ES , E EP A R A G R A P H 3 - 1 2F O R M A X I M U MS L O P EP E R M I S S I B L E . Figure3-12. Digitizinga Ramp. shown in Table l-2 under the "Time ResponseCharacteristics" heading.
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Model3490A SectionIII b. Connect the Delayed Gate output from the oscilloscopeto the S/H AC Trigger input. If the 3490A has Option 020 installed, connect the S/H Stretched Pulse Output to the Extemal Encode input (see Paragraph3-170). vs-ve Slope AB = - Ts-Ta Vc-vs Slope BC = - Tc-Ts % Non-Linearity = SlopeBC- SlopeAB x 100 SlopeAB A A ,"1 ",1 DELAYEDSWEEP GATE OUTPUT c.
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Model3490A SectionIII STEPINPUT - FULL SCALE SAMPLE/HOLD TRIGGER Figure3-16. Ratio Input Connections. reference voltage may be either a positive or negative voltagebetween0.1 V and 1.2Y. On the l0 V range,the referencemay be positiveor negative,I V to l2 V. A P E R T U R ET I M E > ACOUISITION TIME of a StepInput. Figure3-15. Measurement The step input voltage must remain stable for at least the duration of the Acquire/Hold aperature time shown in Table 1-2. 3181. MeasuringPulse Height.
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SectionIII Model3490A and' 1.2 V, the I V range should be used for greater accuracy. sincetheseterminalsare connectedinternally. b. Connect External Reference(dc only) to EXT REF terminals. f. Read ratio display directly if I V EXT REF range is selected.If 10V EXT REFrangeisselected,multipiy displayby 0.1. c. Select DC or AC FUNCTION to correspondto input signalto be measured. NOTE d. Set RANGE switch to desired range or to AUTO. e. Connect input signal(dc or ac).
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Model34904 SectionIV S E C T I OI V N T H E O RO YF OPERATION 4I. INTBODUCTION. 42. This section describes the methods and circuits used in the Model 3490A Multimeter to make dc voltage, ac voltage, and resistance measurements.The circuits needed for ratio measurement,sample-and-hold remote control, and data output are also measurements, described.A generaltheory ofoperation is followed by a more detailedexplanationof the circuits used. Y FO P E R A T I O N . + 3 . G E N E R ATLH E O RO 44.
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Model3490A Section IV +REF< .REF -{ o R E F{ MEASUBEIVIEN TOUENCE SE l r l l o T r t l l l l r r T t z l l z T r l tz tr oTr Prior ro the run{p portion ot the m@su.erent sequence, the 3490A inerts any delay requi.ed by the smple rate control sening, and any delav rhat may be required by the fundion and range selections. During lhis time. the input to the DC Amplifier is grounded and this amplifier and the Integrator arc in lhe Auto-Zero state (see Para$aphs 4-37 and 4-5O).
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Model 34904 SectionIV Attenuator is switched by reed relays which are controlled by signalsfrom the DC Switching Logic circuits' No attenuation is used on the .l V, I V and 10 Vdc Ranges.Attenuation of 100 is used on the 100 V and 100ÖV ranges.No attenuation is requiredfor resistance measurements,becausethe full-rangevoltageacrossthe resistancebeing measuredis not greaterthan l0 V.
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SectionIV Model3490A l+-H-------l sEE NOTES ON FOLLOWTNG .."........PAGE. t-a -N.- B-rt-- c -++ lr r lr lt l t r l . warrrNc, DELAy serecr serrrrncl lpEgroolpenroolcartslpenrool 'l 1 | I I MEASUFEMENT SEOUENCE FOR FULL RANGE NEGATIVE tNPUT. NOT DRAWN TO TIME OR VOLTAGE SCALE. ALL TIMES SHOWN ARE FOR 60 Hz OPTION. FOR 50 Hz OPTION, INCB€ASE TIM€S BY 2O%, lt FET SWITCH ti '*'{t r i^gff*i l i'Xk rP.
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SectionIV Model34904 DC AMPLIFIER ac coNv OUTPUT J6N'AUTOZERO I.AUTO ZERO DISA6L€, USED ONLY DURING SAMPL€/ HOLD OPERAIION The following notes refer to waveforms on preceding page: J. Integrator rundown (0 - 60 ms). A . A U T O Z E R O : l f h o l d i s s e l e c t e d ,w a i t f o r t r i g g e r . l f h o l d is not selected, determine sample rate delay. Check function and range. lf range is not valid for function selected, uprange and downrange as necessary. K.
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SectionIV Model3490A E L E C T R O N I CI N T E G R A T I N G SWITCH AMPLIFIER XzO AMPLIFIER ZERO DETECT AMPLIFIER INPUT FROM OC AMP ANALOG Z E R O D E T E C T TO L O GI C Figure4-5. Simplified Diagram,IntegratorCircuits. L44. x 20Amplifier. 450. IntegratorAuto Zero. 445. The output of the IntegratingAmplifier is applied to an inverting amplifier having a gain of 20, whose output is limited to approximatelyt 0.6 V by a parallel complementarydiode connection betweenits input and output.
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SectionIV Model34904 INPUT ATTENUATOR rNeur{ CONVERTER AMP RECTIFIER ?M K? DCFEEDBACK AMP 25oK F IL T E R OUTPUT DC AMP 3490A-A-2824 50K FEEDBACK ATTENUATOR Figure4-6. Simplified Diagram,AC Conyerter. Table4-1. AC Amplifier Ranging. Range 1 V 10v 1(X)v 1000v I nput Amplifier Gain Attenuator 1 1 0.o1 0.01 1 o.1 1 0.1 Referencevoltage. A simplified diagam of the Ohms Converteris shown in Fizure 4-7. Total Gain 1 0.1 0.01 o.001 a gain of I or gain of 0.1 may be selected.
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SectionIV Model3490A F E ED B A C K C U R B E N TS O U R C E 'J 6.8K O U R I N G R U N . D O W NO N L Y ,oo. I ) / rnre RRer K1 II ,I K 1 K 1 0K 1 0 0K 1.000K 10.000K V O R E FT O DC AMP I K I K I K 1 0 0K 100K 1 lvl CURRENT 1 A P P R O Xl l0 !A l0 !A Figure4-7. SimplifiedDiagram,Ohms Converter. proper combination of signals to the Scan Decoder. Three scan signals,A, B, and C, are applied to the Data +67 .
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SectionIV Model3490A CLOCK DATA COUNTER BUFFERS EMITTER FOLLOWER TIMING COUNTER L T CI HJC 2 H T C4 HTC8 HTC 16 H T C3 2 D C B A T O D I S P L A YA N D DATA OUIPUT O S C I L L A T O RF R E O U E N C Y FOR STATE CLOCK 6OHz LINE 50Hz LINE 4MHz 3.333MH2 Figure4-8. Block Diagram,Clock and Counters. is derived from a Clock Oscillator which drivesthe Data Counter, a Timing Counter, and the State Clock. The Clock Oscillator is a crystal-controlled multivibrator.
PAGE 56
Model3490A SectionIV Y=YES N=NO RANGE SELEC. DEl€AMINE TED. IF AN INVALID BANGE CONDITION EXISTS, 34904 AUTOMATICALLY RANGES TO N E A F E S TV A L I O R A N G E r0,0m !I IACDC IS 34904 AEADY TO TAKE A R E A D IN G ' IS DELAY REOUIRED) BECHECK NANGE CON OITIONS SEFORE TAK INGMEASUREMENT. FLAG IS SET SEN 34904 WILL NOI B€SPOND TO MANUAL OR EXTERNAL TRIG 6ER. IF AUIORANC€ IS SEL€CT€O ANO REAOING IS ON WRONG RANGE,349OA BANG€S ANO TAKES ANOTHEF READING.
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Section IV Model3490A tl-90.Algorithmic StateMachine. 4-91. T\e 3490A main logic circuits employ a logic svstem called an Algorithmic State Machine (ASM)' diagram' Fizure 4-9 shows a typical State Machine block "state" nir nSU outputs are determined by the"present of the state'" machine at a given instant, called the one or with state, along present the in Certain outputs "qualifier" inputs, determine the "next state" of more the ASIr{.
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SectionIV Model3490A remains HIGH until after Zerc Detect on the correct range. After going LOW, End of ReadinggoesHIGH at the end of the measurementsequence.The HIGH to LOW transition signalsto the Data Output circuits that the information stored in the Data Counter is valid and allows the data to be transferredacrossguardbefore the "busy' to "ready." Data Flag goesfrom ENAELE IN P U T S ENABLE OUALIFIERINPUT TO ROM Figure4-12. Block Diagram,QualifierMultiplexer.
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SectionIV Model3490A Count 32 line from the Timing Counter. This line goes HIGH at the overload point, 120 7oof runge.The output from this AND gate then goesHIGH to produce Transfer and Zero Detect commands. output will be LOW. If Time Count 32 is HIGH, indicating a measurementof greater thm 120% of range,the flip-flop output will be HIGH. T[ris output goesto the Data Output circuits (Option 021), and to the Display.A HIGH Overloadsigral is invertedin the Displaycircuitsto turn on the Overloadannunciator.
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SectionIV Model 3490A circuit fumishes the positive reference which is used in negative dc voltage measurements.A feedback circuit which sensesthe reference voltage at the FET switch input to the DC Amplifier ensuresthe correct voltage at that point, even though there may be switch and connector contact resistancein the circuit. The input to the Inverting Amplifier, which supplies the - Reference, is alsoconnectedto the sensepoint. 4-120. Plus Reference.
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SectionIV Model3490A EXTERML REFERENCE AMPLIFIER B I A S C U R R E N T+ EXT REF INPUT 976K AT VOLTAGE AMPINPUTS FEEDBACK AMPLIFIER APPROX EQUAL tI TO+REF FET A?U?F + l7v COMPENSATING CURRENT 90K toK VOLTAGE= INPUT VOLTAGE 34904- B - 3044 INPUT COMPENSATION AMPLIFIER Figure4-15. Input BiasCompensation. with the Bias Adjustment so that the compensating current is equal to the bias current at the External ReferenceAmplifier inPut. for acldc ratio measurements.
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Model3490A SectionIV Table4-2. Polarity in Ratio Measurements. Measurement Run-down External Reference I nput Input Signal + + + Ratio Polarity Signal Displayed Polarity HIGH LOW LOW HIGH HIGH LOW + volts is used as a reference for the + 30 V, + 5 V and - 17V regulators.The -30V regulatoruses- 17V as a reference.Ul02 in the - 17 V supplyis operatedoff raw supply thru CR123 until the -30V supply comesup after turn-on. It is then operatedoff - 30 V thru CRl22.
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Model3490A SectionIV numerical display; the length of time that the Data Counter is allowed to count, and the Data Counter output to the Timing Counter (divide by 10,000 or divide by 100,000 counts). In each range, one of six Timing Counter outputs determines the length of the count, and consequently,the most significantdigit. The position of the most significant digit is the result of the Data Counter output selected.
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Model34904 SectionIV 4-152. lsolatedTriggerand Hold. S E O U E N T I A LL O G I CI N P U T S ENOOF REAOING L 4-153. External Encode and Hold are both LOW true signals. They are inverted and applied through emitter followers to photo-isolators, consisting of a lightemitting diode which drives a photosensitive transistor. Consequently,there is no electricalconnectionbetween outguard and inguard circuits. SCANC H SCAN 8 H SCAN A H l l t l t t l l t r courPurslI i I i i I I It-l54.
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Model 34904 either HIGH or LOW, the output is LOW. The HIGH/ LOW switch on the Outguard Data Output Assembly controls one input to each gate. When the HIGH/LOW switch is set to HIGH, one input to each gate is always LOW; consequently, the output will be the same logic level as the other input. When the switch is set to LOW, one gate input is always HIGH. Consequently, if the other input is also HIGH, the output will be LOW, and if the input is LOW, the output will be HIGH. 4170. Data Flag. +171.
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SectionIV returns to LOW to indicate programmingis complete. While the signalis HIGH, it enablesgatesin both inguard and outguard circuits to allow transfer of information. At the same time, an output from the Sequential l,ogic disables the State Clock signal to the t-ocal/Remote Flip-Flop, to prevent the clock from changing the flip-flop during a remote programming period, When the Program Flag signal is LOW, it disables the Scan A divide-by-two flip-fl op. 4186. DataClock. +187.
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Model3490A SectionIV the same data lines. For this reason a standardcable (which may be variouslengths)is used to connect each instrument to the bus. The cable contains eight data lines and sevencontrol lines. 3490A may be triggered through the rear panel Trigger connector. If addressedto talk, the 3490A will output measurement data in accordance with normal bus operation. Theoryof GPIBl/0 Circuits. 4201. Basic 4-2O7. Address to Listen.
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SectionIV Model3490A that the data has been accepted, the Outguard ASM signals to the Inguard ASM that new data may be transferred acrossguard. The output of the six digits of measurement magnitude is timed by the same scan signals (HSA, HSB, HSC) that control the 3490A display. measurement, the Sample/Hold amplifiers are again allowedto track the input signal. 4-211. Talk Only.
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Section IV Model3490A 4:220. Waveforms shown in Figure 4-31 illustrate the measurement sequence for a single measurement on a sine wave, and the accompanying notations indicate the events occurring during the measurement sequence' In Sample/Hold measurements,the circuits must be in the Traci Mode from the completion of one measurement until the receipt of the next Sample/Hold Trigger command.
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SectionIV Model3490A +I7V+I7V (D - R8 OUTPUTOF 20K S/H CIRCUII INTEGRATING @ OUTPUT R34 S4,S5, AND 55 ARE FET SWITCHES. THEY ARE ALL OFF (NOT C O N D U C T I N G )F O R T H E HOLD MODE. R58 7tK J 4 9 0A - B - 3 4 3 3 R39 tooK DA COMPENSATION 7rK -t7v @ S5 ct6 o.47 v t8 Ja+z R36 roo R6 toK v Figure4-25. Simplified Diagramof S/H Circuit B. 4-223. Circuit B. A simplified diagramof Sample/Hold Circuit B is shown in Figure 4-25.
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SectionIV Model3490A Offset Amplifier output) and applies this voltage to the Integrator (A - to - D Conversion)circuit through Kl, as shown in Figure 4-31. If Sample/Holdoperation is not selected,th9 DC Input Amplifier output signalby-passes the Sample/Hold circuits through K2. +4V HOLO8 OV c r R c u r rB O) OUTPUT( ooint ' +lov -tov 4-228.Sample/Hold LogicCircuits. +t8OmV VOLTAGE ACOSS ev r) R 5 ( p o i nG +l80mv +l8Omv oa coMPENsATtoN ^.
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SectionIV Model3490A DELAY SELECT LINES IHOSA, HDSEI FROM MEMORY STORAGE STATECLOCKHSHC SAMPL€/HOLD TRIGGER IHEHCI FROM LSHC INVERTED STATE CLOCK TO OUALIFIEF MULTIPLEXER llrsHt FRoM ascrl EXTEfrNAL TO OUALIFIERMULTIPLEXER 1490-8-3440 EXTERNAL TBIGGER ENASLE (LXEN} FROM MEMORY STORAGE Figure4-28. Block Diagramof S/H Timing and TriggerCircuits. 50 Hz instruments.
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Model3490A Trigger Enable signal HIGH, inhibiting any further Sample/Hold Trigger pulses for the duration of the measurement sequence. A measurement may also be initiated internally by the Intemal Hold Command signal if the 3490A is operating in the automatic sampling mode, or if triggeredby the front panel pushbutton. +235. Read Only Memory. A microcircuit Read Only Memory (ROM) is the central component of the Sample/Hold Logic control circuits.
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SectionIV Model3490A SAMPLE/HOLD MEASUNEMENl S E O U E N C €N. O T O F A W NT O T I M E O ß V O L T A G ES C A ! E .
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I ./ ;' I S GNAL PATH /H NOT SELECTED !: -J 3490 INTEGRATOR tfr ii ,:t INPUT TERMINAL - REFERANCE< ,a + REFERANCEJ : i GRouN0 t T{ I V .=! rt *{ ;it,; ii OTHER 349OA CONTROL ANO TIMINGCIRCUITS i:r .: J E X A M P L E O F T R A C K / H O L D M E A - S U R E M E N TS E O U E N C E * ai j :J ,l a' During the period 6T1, circuits are in the Tract+,Mode and in'put switch SA is connected to the lnput terminal. a S/H T-riggercommand is received.
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NOTE2 I rIOLD A1 r b_HOLD l l B | - ----+prr2{zrs.i*-;- l_ i gort tO tt t2 t3 3r4------+ h - - - l * - i- "r ' qrs I sreI l.-- t4 t5 t6 ll zra-----f I l8 I ero-+-- orr-_____- tO Figure4-31. Sample/HoldSimplified DiaeramAnd MeaSurement Seqüence.
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Section V Model34904 Table5-1. Recommended Test Equipment. I nstrument Type Required Characteristics Use Recommended Model DC Voltage Standard Voltage: I mV to 1000 V Accuräcy: 1 0.005 % PerformanceChecks Adiustments Troubleshooting +rp- Model 7408 DC Standard/ DifferentialVoltmeter AC Calibrator F r e q u e n c y :2 0 H z t o 1 O Ok H z Output Level: 1 mV to 10OOV Accuracy (midlcand): r 0.
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Section V Model34904 S E C T I OVN MAINTENAN CE 5-r.T N T B0 D U CT Io N . in the table may be substituted for the recommended model. 5-2. This section contains performance tests and adjustment procedures for the Model 3490A Multimeter. The performance tests determine whether your instrument is operating within its published specifications.The adjustment proceduresare provided to help you maintain your instrument within specification limits. TESTEOUIPMENT. 5.3.RECOMMENDED 54.
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PERFORMANCE CHECKS Section V the 3490A accuracy. In this case,a correction factor chart should be used to adjust the calibrator output. '745A1746A Such a chart for the -hpmay be derived during routine periodic calibration of the instrument, and can be used to set the 745A controls for a precise output. For example,if the 745A output is known to be 0.04% high at I V, 20H2, the 745A can be set for a precise 1 V output. by setting the 745A voltage set controls'to 1.
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PERFOBMANCE CHECKS Model34904 Section V Table 5-3. AC Voltmeter AccuracY.
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PEBFORMANCE CHECKS Section V 5.22.ACCOMMON.MODE REJECTION TEST. Model3490A c. Set 3490A FUNCTION to DC. RANGE to l0 V. short Input. Note 3490A reading. 5-23. An ac calibrator (hp- 7a5A) and an electronic counter (-hp- 53004) are requiredfor this test. d. Disconnect input shortandconnectcalibrator to 3490A input. Adjust calibrator amplifier to 7.07 Vrms (10 V peak). a. Connect a I kCl resistor between input High and Iow terminals, and connect High to Guard as sfiown in Figure 5-3. e.
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CHECKS PERFOBMANGE Model3490A Section V AC CALIBRATOR hp 7454 n r - r n O 0 0 0 0 ä ö ö ö o o-rrr-rrr--r] <) ffi L4 r-r-I-T-'l oD -T-1 a') MULTIMETER hD S49OA o o o o o ? t".f? e ELECTRONIC COUNTER hp53OO n FI \ 5490-B-y50 Figure5-4. AC Normal-ModeReiectionTest. f. Connect jumper across I MQ resistor and note 3490A reading. g. Remove jumper. 3490A reading should change between 000.908V and 000.910V. This verifies an input resistanceof 10 MQ x O-15%. INPUT IMPEDANCE TEST. 5-28.
PAGE 83
PERFORMANCE CHECKS Section V Model3490A TEST OSCILLATOR hp 652A MU L T I M E T E R hp 349OA ( o ) @ L ' e ,,' \ \ / @'\--O l/-.----\l @ - @ oo 34904-A-?947 Figure5-6. AC Voltmeter Input lmpedanceTest. with the Sample/Hold performance tests. Refer to Paragraph5-9. $32. Sample/HoldBC Mea$rement AecuracyTest. 5-33.
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PERFOHMANCE CHECKS Model3490A Section V O S C I L L O S C O P EPLI.JGIN PLUG IN hp lSOD hp l80lA hp l82lA FUNTION GENERATOR hp 3310A/B OELAYED GATEOUTPUI TOSAMPLE/HOLD ACTRIGGER INPUT Figure$7. Sample/HoldResponseTest. g. Set oscilloscopemain sweepto .5 ms/div. h. Adjust function generator frequency to 200H2, output level to 2 V peak-to-peak. i. Set 349OARANGE to I V. j. Adjust intensified trace to approximately I ms after the negative-going edge of square wave. Note reading, which should be near zero.
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PERFORMANCE CHECKS Section V b. Connect the battery to IMUT terminals, * to HIGH, - to LOW. Note and record 3490A display. c. Connect dc standard to EXT REF terminals and set standard output to positive voltage equal to display noted in step b. d. SET 490A RATIO switch to EXT REF l0 V. Display should be + 09.9982 to + 10.0018. e. Reverse polarity of dc standard output. Display shouldbe -09.9982to - 10.0018. f. Set RATIO switch to INT REF. Reversepolarity ofbattery connections.Note and record display. C.
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Section V CHECKS PEBFORMANCE Model3490A DC STANDARD/DIFFERENTIAL VOLTMETER ho 74OB MULTIMETER hp 349OA OIJTPUT CABLE il0558 34$A-l_5045 Test. Figure5-8. External ReferenceInput Resistance rr \ t: I SingleReadingwith OutPut r I) I ImmediateInternal Trigger E - Execute 5 ) R 4 ) E 12. Sendaddresses l-l\,tRE ? Unlisten command V - 3490A talk address - Addressof listener HMRE 4. SendAddresses LMRE - Unlisten command 2 V (1268) - 34g}Atalkaddress ' Addressof listener HMRE 13.
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PERFORMANCE CHECKS Section V 19. Sendprogramminginstructions it l l Ko p l :o lI .l kQ Range E 20. Sendaddresses LMRE ? Unlistencommand V - 3490A talk address - Addressof listener HMRE 21. Accept 349}Areading Check for KO and .l kSl range 22. Sendaddresses LMRE 't Unlisten command 6 - 3490A listen address - Addressof talker HMRE Model3490A 29. Accept 3490A reading Checkfor l0 kO range 30. Sendaddresses LMRE ? - Unlistencommand 6 - 3490A listen address - Addressof talker HMRE 3l .
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PERFOHMANCE CHECKS Model3490A 52. Returnto local HREN 40.Sendaddresses LMRE 2 - Unlistencommand V - 3490A talk address - Addressof listener HMRE TestProcedure. $47. General 548. This procedurechecksthe ability of the 34904 GPIB circuits to accept and processaddressingand and to output measurement remoteprogramming, data. This proceduremay be used with any bus system controller. 4 1 . Accept349D[reading Checkfor 10,000kQ range 42.
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PERFORMANCE CHECKS SectionV Address 3490A to listen, calculator to talk. 9820A talk addressis u. This puts 34904 in remote control. Program 3490A to Test No. l, Single Reading with Output, Immediate Internal Trigger. Address calculator to listen, 34go^ to talk. calculator listen addressis 5. Accept 34904 reading. I ::::! " i:j,.," H"'iiF:i,l'.l":+ir r::::f,.li:r F;:ä il Address 3490A to listen, 9820A to talk. Program Ohms function, .l ke range. j. rjj I " ''':'r:l' " " t"':i'i i't l"'i I i:::'I i.
PAGE 90
PERFORMANCE CHECKS Model3490A Accept 3490A reading. Instruct 98204 to check last characterof output format. Checkfor l0 kSl range. ,: SectionV Accept 3490A reading.Instruct 98204 to check last of outputformat.Checkfor 10,000kO range. character r:t tr FiIlLt :l ::l't il i I [:r t-.::i;:l ;ll t-:I .-ll'lF lir1"" i 1 +'t-:..+ i':Ilhl :i,:;i'+;:tli 1'F l":::;:I ::::l t:':ii .."t |',]l-,, i:lt" I l. +.r".:1! "i'..".;{ ::: " ili 4. [ l:r,ü,"1" ]. I F " Hfi l-. "1' ,' :i, .i:f ijl .".
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PROCEDURES ADJUSTMENT SectionV $ 5 1 .A D J U S T M EPNRTO C E O U R E S . 5-52. Complete adjustment proceduresfor the Model 3490A Multimeter, including options, are containedin the following paragraphs.These proceduresshould be performed only after it has been determined from the PerformanceTeststhat the 3490A is out of adjustment. The adjustmentsin Paragaphs5-53 through 5-60 must be performed in the order given, and before the ac, ohm, sample/hold and ratio adjustments.
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AOJUSTMENT PROCEDURES Model3490A d. Check other power supply voltagesby connecting digital voltmeter and oscilloscopeto test points listed in Table 5-9. If any voltageis not correct, refer to Section vu. SectionV b. Connectdc standardto 3490A input and adjust standard outputto - 10.0000v. c. AdjustAlAlR3ll - 10.0000. (+Ref) for 3490Adisplayof Voltages. Table 5-9. PowerSUPPIY A1A1 TestPoint + 17\l + 5V +30V - 17V - 5V - 30v Ripple* Voltage + 1 6 . 9 9 t o + 1 7 . 0 1V + 4.995 to + 5.075 V + 30.
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PROCEDUBES ADJUSTMENT SectionV c. Adjust A6R32 (l V HF Adj) for 3490A displayof 1.00000. Model 34904 a. Set FUNCTION to TEST, RANGE to 7. Short Q Sigral terminals. Adjust A7R5 for display of - 9700.0 t 100.0 (Instruments with serial numbers below l2l1A00656 may not havethis adjustment.) d. Change ac calibrator frequency to 100 Hz and adjustA6R27 (1 V LF Adj) for displayof 1.00000. b. Set 3490A FUNCTION to O, RANGE to I k. e. Repeat steps c and d until both readings are correct. c.
PAGE 94
Model3490A ADJUSTMENT PROCEDURES SectionV 5-73.0ffsetAdjustment. a. Remove the toP guard cover. b. Locate the white/black wire just to the rear of the "5th Digit display cable connector. This wire is labeled Blank" in Figure 5-10. Disconnect this wire from Test Point L and connect to Test Point M. This restores the display to five full digits for Sample/Hold measurements, providing greater resolution in order to make the following adjustmentsmore accurately. 5-74.
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Section V AOJUSTMENT PROCEDURES a. With 3490A set to l0 VDC RANGE, TRACK/ HOLD, SAMPLE RATE fully clockwise, and dc standard connected to input as in previous adjustment, set dc standardoutput to + 10.0000V. b. Adjust A27R6, DA Gain, + 10.0000 V. (Display will be noisy.) for display of S77. ResponseAdjustment. 5-78. This procedure requires a function generator(-hp3310A), a silicon drode, a l0kQ resistor and an oscilloscope having a delayed sweep and a delayed gate output (-hp l80C/DllOSlAllS2lA).
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Model34904 ADJUSTMENT PROCEDURES s. Set RATIO switch to EXT REF I V' Adjust efgni (Bias. Atlj.) with both positive and negative 10.0000V inputsfor displayof zerot 0'0005V' h. Repeatsteps a through g until all readingsare colTect. i. DisconnectlMft resistorfrom EXT REF termi nals. Set RATIO switch to INT REF, FUNCTIONto DC, RANGEttr 10 V. i. Connect a mercury battery between9'5 V and 10.5V. or other floating voltagesourcestablewithin 1 mV/hr, to INPUT terminals,- to Higfr,+ to Low' Note 3490Areading.
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PERFOBMANCE TESTRECORD Model 349oA . . Hewlett,-PaQkard resrs performed by _ SerialNumber DESCRIPTION PARAGRAPH t',. TEST LIMITS DC Voltmeter Accuracy $9 ', READTNG ':;:..'', ,..: .: 10.0100ov r0.05000v .009995 .049990 tV ro.100OOV 0.09997 0.10003 o.50006 1.00010 10V 11.0oooov 110.O0OOV oo.gggz 0{1.9990 01.oo03 10.0010 r 10o.00OV 099.990 o10.o03 100.010 iloo.ooov i 50O.00OV + IOOO.OO V 0099.97 . :,-:..,:.::i::..r:..,::. ,r,,,,,.,. 1OOOV stt Max. .010005 .050010 .100015 .
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CONT'D} PERFORMAN E TB E C O R(D TC ES PARAGRAPH DESCRIPTION 5-32 READING TEST LIMITS Sample/Hold DC Accuracy Track/Hold Range 1 V 1 V 1 V Input * 0.10000v r 0.50000v r 1.0oooov 10v 10v 10v Min. Max. t 0.0998 r 0.4998 ! 0.9997 0.1002 0.5002 1.0003 r 1.00000v r 5.00000v I 10.oo00v r 00.998 r 04.998 r 09.997 01 .o02 05.002 10.o03 1 0 0v 1 0 0v 100v r 10.0000v r 50.oo00v i 100.000v r 009.98 r 049.98 r 099.97 010.02 o50.o2 100.03 1000v 1000v 1000v ! 100.000v r 500.000v 1 1000.00v r 0099.
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CONT'D} TC EE S TR E C O R( O PERFORMAN DESCRIPTION '^.:;^* READING TEST LlMITS AC/DC Ratio Accuracy .:. Ext Ret F"ngu 11;,', , ' : l V lv l V 1gv - 10v Ext Ref Voltage lnput Range I nput Voltage 0.50000 v t.ooooov 120000v 1 V I V 1 V 0.50000v 1.00000v 1.00000v 1.00000v 5.00000v 10.ü)oo v 12.0000 v t0v 10v 10v 10v 1.00000v 5.00000v 10.o@o v 10.0000 v External Reference Input Resistance Test Max. 099865 099865 0.83218 099865 09.9865 09.9865 08.3218 Min. 1 .O0135 1.00135 0a344{l 10.
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Model34904 Section VI sEcTt0N vl R E P L A C E A BPLAER T S 6 - 1 .I N T B O D U C T I O N . 6 . 4 .O R D E R I NI N GF O R M A T I O N . 6-2. This section contains information for ordering replacement pafts. Table 6-l lists parts in alphamericorder of their reference designators and indicates the description, -hppart number of each part, together with any applicable notes and provides the following: 6-5. To obtain replacement parts, addressorder or inquiry to your local Hewlett-Packard Field Office.
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Section VI Model 3490A T o b l e 6 - 1 . R e p l o c e q b l eP o r t s Reference HPPartNumber otv Designation AI O349O-{165Ol alcr ^tc2 ol 50-0093 ot 50-o093 ^lc3 ^tc4 alc5 alc6 alcT ot ol oI ol ol alcS Alc9 alclo' ol 50-o093 ol ao-l 7ot ^ or60-or34 lg\ ^tclol llclo2 Alclol a lc lo4 alclo5 ol80-2510 olao-251o ol 80-2 509 0 I 80-?50 I ol 80-2510 alc lol alc lo'l alcloe alclo9 alcll o ol 80-2 5t o ol 80-2 509 olao-o309 or 50-0071 o 180-o I 97 alcll I alc ll 2 alcll.
PAGE 102
Model 34904 Section VI T o b l e 6 - 1 . R e p l o c e o b l ep o r t s l C o n t ' d l Reference HPPart Number Designation otv Mfr Code Description Mfr Part Number AICR4 AI C R 5 AICR6 llcRT 1902-o04 I l90l-oo{o t90l-oo40 leol-0040 DIOD€:AREA(OOTx 5 .
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Section VI ModeI 3490A T q b l e 6 - 1 .
PAGE 104
Model 34904 Section Vl T o b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n r ' d I Reference HPPartNumbet Designation atv Description Mfr Code Mfr PartNumber Alo42t Aloa26 ^to127 l8 54-O087 l8 t3-oo lo r854-O087 TSTR: SI NPl{ f S T R : S l P i t P l S € L € C T E DF R O ü ä { 3 2 i 1 t TSTR;SI NPN aol3l 28tAO aol 3l 2tt34l? 1853-OOl.
PAGE 105
Section VI Model 3490A T o b l e 6 - 1 . R e p l o c e o b l eP o r t s { C o n t ' d f Reference HPPartNumber Qty Designation Description Mfr Code Mfr PartNumber alR l04 Äl t l o 5 alRlo7 alRto8 alR l09 0683-O335 069A-3264 o69A-4474 o6a4-2721 o757-O429 2 2 2 4 2 n , : F X OC O f l P 3 . 3 O H i l 5 l t l 4 y R:FXD FLll ll-aK Ot|I lt l/8t{ R:FXO FLX Aa5O OHll lt r/8r R:FID Cof{p 2700 olri lot l/4t R:FXO HEI FLir 1.82X OHil lt l/al.
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Model 3490Ä Section VI portslCont'df T o b l e6 - 1 .R e p l o c e o b l e Reference HPPart Number oty Designation Description Mfr Code Mfr PartNumber tlnaol ^üa1{J2 tlßao3 06s4-4721 o6a4-4721 0684-l 53 I R:Fxo Coftp 47oO Or|I lot t/.
PAGE 107
Model 34904 Section VI T o b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n t ' d ) Mfr Code Mfr PartNumber 28480 28480 26480 075f-ot46 0698-4196 o?5?-0346 ol 295 28480 o47 13 01295 01295 sN?404N I 820-O798 t1c4024P st{7474N st't?493N ot2e5 ol 295 12040 28480 01295 sil7474N sN3543I Lr{71lc lAlA-2055 s$1740+N OUAL D F/F 4-AIT BINARY COUNTER INPT.AiIO OR GATE LP 4U '-2-2-' DI,AL O F/F 8-INPT T.
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Section VI Model 34904 T o b l e 6 - 1 . R e p l o c e o b l eP q r t s l C o n t ' d l Mfr Code Mfr Part Number afAo: sn I ELDlt{G BEAD:SHI EIDI '{G E I T R A C T O R : P C8 O A R O . S t l c f 28+00 28480 2A{80 9170-o89a 9l 70-o89a tO{)-{1740 EXTRACTOR:PC. 8OAIO. Bß,Ott S O C K E T : I CI P l } | TSTR:SI ilPN FET DIAI. ISTR3 28t80 l7l l? 28tAO 28480 40{o-o?r9 5r66-2t5-t I A5t-O3l I lESt-ot99 R: MATCHEDSETWITH A2R2AND A2R4 R: MATCHEDSETWITH A2RI AND A2R4 R:YAR CERXET 'O OI.
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Section VI Model 3490A T o b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n t ' d I Reference HPPartNumber oty Designation Mfr PartNumber C A A L EA S S Y : O I S P L A Y A O A R OA S S Y : R E H O T JEU X P E R 2a4AO 28480 03{90-6 l60l 03490-66504 EXTRACT0R:pCao^Ro. Bt-aCK 2A4AO 404{FO74a E X T R A C T O R : P8Ca A R , D .v I o I . F I 24480 4040-o755 28480 03490-66505 l/41 l/4r, l/{r tll.U orr2t 01121 oll?l olr2l C B 222L c8 2221 c 6 222L c a 222! l.
PAGE 110
Model 3490.A Section VI T o b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n t ' d f Mfr Code Mfr PartNumber DIODE:HITT CARRI€R DIOOE:HOT CARF,IER DIODE:SI 3O t.V IO PA L€A(A6€ DIoDC:SlLlCOt{ 50 ,aA 30 HV DIODE:SILICON 50 'IA :x) t.V 24480 2A4AO 28440 o7261 0726! l90l-o5l e l90l-o5t I l90l-o5a6 FDGIOAS FD€I 088 I 901 -0040 DIODE:SI|-ICON o7263 FOGtOaS a6( I a6(.
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Model 34904 Section VI T o b l e 6 - 1 .
PAGE 112
Model 34904 Section VJ T o b l e 6 - 1 . R e p l o c e o b l ep o r r s ( C o n r ' d I Reference HP PartNumbet oty Designation Description Mfr Code Mfr PartNumber tTfrPl I lTtpl 2 l7t{Pl 3 l?IPl4 a?||pl 5 0360-lao3 0360-l 803 0360-l ao3 036rl a03 036G-l 801 T C R T I i l A L : S O L D € RT U G IERTIilAL:S(LOER LIF TERXINAL:SOLO€R Lt,G T F R I { I N A L : S O L D € TL T .
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Model 34904 Section VI T o b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n t ' d ) Reference HP Part Numbet Designation otv Description CONTACIS OOARD BßARO OIIARD EOARD 7t7 A5 2AlAO 29480 2a4ao 28480 252-22-t0-700 50ao-o170 5060-0t?o 5040-o170 5040-ol. ? o ARACKET : }IOUNTIIIG CONNFCTOR:SINGLE CONNECTDR:SI NGL€ CTINNFCIOR:SIN6LE C(r.INECTOR:SINGI.
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Model 34904 Section VI T o b l e 6 - 1 . R e p l o c e o b l eP o r r s ( C o n t ' d ) Reference HP PartNumbet Designation Mfr Code Mfr PartNumber sttrcH:sLtDE SPDr O.5A l25V ACIDC SIITCH:SLIOE SPDTO.5A t25U ACTDC 79727 79f27 c-ll c-ll TC:TTL LP H€T II{VERTER IC:TIL HFX II{YERTER IC:TTI.8-6IT S€R-III PAR oUT shlFr REG IC:TT! A-BII SER.
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ModeI 34904 Section VI T o b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n t ' d ) Reference HPPartNumber Designation Mfr Gode Mfr PartNumber o7 26t l2 040 t2040 04? l:i u6891-O959X Dt{7{LO2N otl?4L73til Lc837P 04?13 sN?402N 2 84 8 0 03490-66511 '6249 729A2 c067 Blo 2Elo2zs26{oH 801-|(80001 t 72942 56289 a ot - K 8 0 0 0 1 I 150D225X9020A2-DYS DIOOE BREAKDOIIN 2a4 80 1902-0671 DIODE:SI 30 t,'V IO PA LEAKAGI DIODE:SI 30 HV IO PA L€AKAGE OIODE AR€AKDOTN DIODE 8R€AKOOTN:13.
PAGE 116
Model 34904 Section VI T o b l e 6 - 1 .
PAGE 117
Model 3490A Section VI T o b l e 6 - 1 .
PAGE 118
Section VI Model 34904 T o b l e 6 - l .
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Section VI Model 3490A T o b l e 6 - 1 . R e p l o c e o b l eP o r t s l C o n t ' d ) Reference HP PartNumber Qtv Designation Ä 2 ? R 3I ^27P.a2 ^27R33 A27Rt4 ^27Rt5 o757-0149 o757-O40 I 075T-0r'r65 0698-3162 0757-ü42 427R36 427R3? 427R3 € l2?R19 127R40 Description Mfr Code Mfr Part Number OHH lt l./Ar IOO OHri tt l./8tt loo( oHa lt t/a. 46-{( Otil lt l/8r (I{lt l: lO.
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Model 3490A Section VI T o b l e 6 - 1 . R e p l o c e o b l eP o r l s ( C o n t ' d ) Reference HP PartNumbel oty Designation Description Mfr Code Mfr PartNumber 428U9 a2aul c A2gul I A2a$12 a2auLl I 8 20 - O 0 9 9 l8 20-o6 56 I 82 0-O9aO lB 20-o59 8 I 82 0- 0077 IC:TTI 4-AIT BINARY COUNTER IC:ITL LP 4-8IT 2-INPT li|U|.TIPI-ExER IC:DI6TTAt CXOS H€X ruFFER/TRANSLAT0R IC:TTL LP OUAO 2-INPT EXCT.
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Model 3490A Section VI T o b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n t ' d ) Reference HPPartNumber oty Designation Description Mfr Code Mfr PartNumber R:FXD R:FXD R:FXD R:FXO R:FXD CO'{P COftP COHP COXP COIIP 6.8K OHM l0l l/4tl 33K OHl,t lot l/41 33K fHl,r 101 ll4U 560 oHN lot l/41 6.8K OHt{ lot l/41 ol t?l ol l2l ott2l 0 11 2 1 ol l2l c8 ca ca cB ca 6821 3331 3331 56ll 6821 R:FXD R:FXD R:FXO R:FXO R:Fxo C.OilP 6.aK OHll l0l l/4x CONP 6.8K OHl.r tol l/41 COIIP 6.
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Section VI Model 3490,{ T q b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n r ' d | Reference HPPartNumber Designation I 1 Mfr Code Mfr Part Number CONN:PC 44 l2X22l C0NTACTS coNN:PC 44 t2)/.
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Model 3490A Section VI T q b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n t ' d ) Mfr Code Mfr PartNumber OUTGT'ARO DAIA ASSY 2Aaao oa49(F66533 56289 72942 72942 co67 Blo2Elo2zs26-cDH 8 0 1 - x 8 0 0 0 1L 80 l-(8000 ll Reference HP PartNumbet oty Designation Description ^3t oa4.to-66534 a33Cl ^13C2 ^?tc, 01 50-0 05 0 ol 50-o093 ol 50-oo93 csFlD cER looo PF +a(F20f looovDct. C:FXO CFR O.Ol UF +80-2Ot lOoVOCt{ c:FxD cFR O-Ol UF .
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Model 34904 Section VI T o b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n t ' d ) Reference HPPartNumbet Designation t8 20 -o 596 LA20-0777 1 .
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Model 3490A Section YI T o b l e 6 - 1 . R e p l o c e o b l eP o r t s ( C o n t ' d ) Reference HP Part Numbel Designation otv Description Mfr Code Mfr Part Number lzoo-o47+ ^?6r{P.- t200-o474 S O C X E Tl :C l 4 - P l N 28480 Ä3601 1854-O07l TSTR:SI NPNISELECTEF OR o r .
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Section VI Model 34904 T o b l e 6 - 1 . R e p l o c e q b l eP o r t s ( C o n t ' d ) Reference HP PartNumber Designation oty Description CHASSIS Mfr Code Mfr PartNumber 6 IIISCELLANECI'S PIRTS AI A2 A3 A4 A' 034S(F66501 03490-66 502 0349 0-66503 01490-66504 o349 0-66 505 I.iAIM CIRCUIT ENARD ÄSSY HIGH I'.IPEOANCEASSY BOARD ASSY:OISPLAY BOARD ASSY;REI{II€ JT'T|PER AOARO ASSY:RÄIGF s|ITCH 28480 28480 28480 28{80 28480 0349{F66501 o3190-665o.
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Seetion VI Model 3490A T o b l e 6 - 1 .
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Model 34904 Section VI T o b l e 6 - l .
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Model3490A SectionVI h N MP7 MP37 MP23 Designator MPl MPlA M P 1B MPlC M P 1D MP2 MP3 MP4 MP5 MP6 MP7 MP8 MPl O MPl 1 MPl 2 MPl5 MPl 6 MPl7 MP18 MPl8A MP19 MP21 MP23 MP24 MP37 MP38 MP39 MP41 MP42 Item 1 2 3 4 o 7 8 a 10 t l Description Panel: front Decal: front panel {standardl Decal: front panel (sample/holdl Decal: front panel (ratio) Decal: front panel {s/h and ratiol Window: display Guard cover: bottom Cover: bottom Trim: bottom Frame: side (2 requiredl Nut: sheet metal Extender rod: on/off swi
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SectionVI Model3490A MP30 T E R M I N A LN U T 0360-1758 MP2g INSULATOR 03400481 BTNDING P O S TS U P P O R T I 03461-27401 , MP28 INSULATOR 03404724 \ BINDING POST 1 51 00085 l \ L ;oo-@ \*o0 P\ / / t mft @v&'' / / \'o,%#'o'.x'^ '*i*o'"'* BRACKET:FRONTTERM \ LOCKWASHER 2190{054 H E XN U T 2950{054 Figure6-2. BindingPostAssembly.
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Model3490A SectionVII S E C T I OV NI I TBOUBTESHOOTING AND C I R C U ID TIAGRAMS 7 - 7 .A C C E SFS0 RS E R V t C t N G . 7 . T .I N T B O D U C T I O N . 7-2- This section contains information necessary for repairing the Model 3490A. Schematicdiagrams,troubleshooting trees, and other troubleshooting and repair information are included. Figure 7-17 showsthe location of assemblies within the 34904. Additional troubleshootingnotes arelocatedon schematics. 7 . 3 .
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Model3490A SectionVII b. If the problem is not with an option, determineif the faulty supply is in current limit (seeParagraph7-12). If so, determinewhere the short is by use of the power supplyjumpers and troubleshootthat section. c. If the faulty supply is not in cunent limit, determineif the faulty supply has the correct raw supply voltage (see Table 7-l). ß the raw supply doesnot meet specification,troubleshootthis section. d.
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Model34904 SectionVII tion drawing). Connect the gatesof both A2QIA and B to ground. Connecta dc null meter (-hp- 419A) between AITPR and ground, and adjust AlR522 from one extreme to the other. If this point adjusts both positive and negative, the amplifier is probably operating correctly, and the Bootstrap Amplifier should be checked. If AITPR will not adjust both positive and negative, connect the dc null meter betweenthe sourceof A2Ql B and add adjust AlR522 Io both extremes.
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SectionVII Model3490A 7-25.Replacement of OCR30l. Table 7-3. AC Reed Relay Checks. 7-26. If it is necessary to replacethe referencetransis_ tor-diodepackageAleCR3Ol, it is also necessary to replaceresistors A1R306,309,310, 313, 314and:t5, which are matchedto eCR3Ol. Matchedresistorsare suppliedwith the replacement reference, eCR30l. Ranges Affected 7-29. types of problems,such äs amplifier offset ..Some or failure, may be f9un9 UV setting the Sampte Rate control to HOLD and making dc voliage rn.
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SectionVII Model3490A TROUBTESHOOTING. 7.40.DISPLAY "Ihe Display Troubleshooting Tree, Figure 7-8, 741. mav be used io troubleshoot a defective display' The nuäerical display units and the polarity unit may be most easily checkedby substitutinga known good unit' Access to the Display Assembly is gained by removing the 3490A top trim strip and the tfuee vertical screws securingthe diiplay heat sink to the guard shield' TU I NGGG E S T I O N S . CB O U B L E S H O OS 742. LOGIT 743.
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Section VII breakdown of individual components contained in the Repair Kit and their respective parts kits. The printed circuit assembliesprovided in the repair kit may be substituted for assembliesin the instrument in order to isolate the trouble. A kit of microcircuit packagesfor each assembly is provided so that once the trouble has been isolated to an assembly,the defectivemicrocircuits on that assemblymay be replaced. A system controller and a printer are required for troubleshooting the I/O circuits.
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SectionVII Model3490A / ,.\ QY / / L_/ \ Item 1 2 3 4 5 6 7 8 Description 4 - 40 X 114wn headmachinescrew Shield,aluminum LogicAssembly,428 Spacer,.156 LongX .125 lD X .250OD Shield,flexible 4 -40 X 3/8 nylon pan headmachinescrew AnalogAssembly,427 4 - 40 5lA pan headmachinescrew trp- Part No. 22000139 03490-006(M 03490€6528 03804520 o3490-27301 220047o'4 o3490€6527 2200.0149 Figure7-3. Sample/HoldAssembly.
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SectionVII 7.67R . ATIO TBOUBLESHOOTING. l-68. If ratio measurementsare not correct and the trouble cannot be corrected by the Adjustment proce_ dure, or if the adjustmentscannot be made correctlv. the following troubleshooting information should be used. Check for obvious sourcesof trouble, such as burned or loose componentsor loose wires.Make sure the printed circuit board, Al3, is seatedfirmly in its connector, and that the cable, W8, and the three operationalamplifiersare seatedfirmly in their sockets.
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SectionVII Model3490A GATESYMBOLS. 7.77.LOGIC 7 -78. L humber of logic gateintegratedcircuits areused in the 3490A. Most of theseare TTL circuits, in which the HIGH logic level is 2+ 2.4 V and LOW is (r 0'5 V. The normal symbol used to indicate a 2-input NAND Gateis shown below, accompaniedby the truth table. The NAND Gate may also be used as an inverter by connectingone input permanentlyto HIGH (+ 5 V). In this case,the circuit may be shown as follows.
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SectionVII Model 3490A Table 7-6. AlphabeticalListing of 34g0A Mnemonics. Mnemonic LACI LACO HAUT HAZD LCDC HCOC LCDF lgER HCES f9!C f9yA i9yg l9yc LCOV HCRA HCRB HCRC LCSO LCTC HDCA LIR HIRA HIBB HIRC LLEC HMA HMB HMC HMD ly9A Iy?q Iy?C HME HMF HMG ryryg ly!9 LMOT llygf ly99 ly99 lIgD .:yy? :y:_a :yy: LMRF HOCB HDCC HDCD HOFL LDNR HDPP Description Source U22 or Rarioor s/H oprion H preceding mnemonic means HIGH is true; L means LOW is true.
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- 5v c-u wG +r?v6-UwH -t7v6\wr 43zt aaaa +5vcttwJ f
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Comply with Nots 1 betoro the frforming following t6ts. Check r 30 V, I 17 V,and r 5 V prer suppty vott6g6 at pints 6t on sti€l a$embly 4141. Correct Eltages shown below. !904- Set Sbmple Rate to HOLD. Obsrw pint decimal while *lecring ech 6lid EnF in fundions. all Oecimd 3h@ld Fint corrqpd to rans elfttd in all 6s6. O-!OO! NOTES 1. Bdore lollowing this Troubleshmtiru Proedure, .emve th€ Ohc from it3 @nndor. Oonvqtq lr is nor n*6erv ro disnned iis input or outpur tads.
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-, .: .'i ': :: ;.: ,i .: .:*, ':' , ] ':,il: i1:L;gji, til , .!-.
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St Fundion Smde Rat€ Apply I /2 full range + and - input on e*h Enge. Monitor t$t rcint g on A1A1. S@pe rync to A'TPK, + slope. Correct wadorft: to to FAST pin 12 ot AltX) *nn ott"" ü*!iai !drp6 ltnt. rync, +.1@) @ect + INPUT AITPK. + stooe. trvefo.d: JIIIL- t -INPUT +3vri ,"."i1glil IL_J]: rilh i.9uli F or disploy€d Obs€re Proceed $@ting to Logic TroubleTre, Figure 7-10. I l I I Refer to Logic Trouble*Foting Tips, ParagEph 7-3}. waveforG polaraty 3d 6 indi6td.
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-:=i:E ::.: !. * e 8+*++ ä?FF +esr;$o!cl i*l'ril+*$?B?@ *@$@ Fr*$$-++Wi* , ]'i*B @ @'@' U . I | | \ -, l ; l ar - ' tlla 7 l+li Tl *i ;+o?r A i :F .i.s ä *$ .-t-.J-, ++++gp++ *is'*;$9. el g.@ ? 1 t 6\J 1 ll?Qxl .67j7,'66:-----\ l.$!9b-i"- - -:.,1 c2or i- c207 z O a o l ; i ; T .-+i: .'..s -.n ,l J ffi I J - *I s$sE :' AI l äp Port No. O349O-66501 Rev F 3 ,3 3 l 3 3 l c5,c6 I Lt.L2 ARE ON BÄCXSIDE 000000000 hp Pott No. 0349O-665O2 Rev. C : 3 t :t r ' .
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l: r.f: With Al U202 out, connect + 5 V to A'l41TPA. Appty tull range p6;tive input on .1 V through l0O V r.ngs. Monitor A ! TPR with scop€ lTrigge. on AtTpK, + slope, 20 ms/cm). Cdrect wavetorm for @ch range: Remve A1U202. Altenately @nnect +5 v 6nd - S V ro AlAl TPA. Potarity display shoutd be + for +5V and-for-5V. with / AIAlTI -5V. C gac3 o ( arld -5V Connect to AIA1TPA and repqr t6t. negatiw full Enge input on .1 V through 1O0 V range.. AlTPK] Q204: oVrr Correct waveform Ior each 6nge: -uiL.
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With A1U2O2 out, @nnect +5V bAIA|TPA.Apply full range pGitiw input on .1 V through 100 V rangesMonitor AITPR with scoF + on AITPK. fr{999l {ope, 20 G/cml. Csßd Mvetorm for qch Bnge: out and With AlU2O2 conneded to AIAlTPA - 5 V. Check waveforms at gates oJ AlO204. 0205, aod 0208 to lSync AlTPK) -5V Connect to AIA1TPA snd rep@t t6t, negative full range input on .1 V through 100 V ranges.
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Trouble.hoor FET sitchB A10204, 205, 2G, and 209 by m€suring gate-tosur@ voltages, with Sample Rate set to HOLD. Volbg6 3hould be: AlAl TPA. Repla@ A1U2O2 in ocks. Wirh Sample Rae in HOLD, monitor AiAITPA with (41C207 shortedl sp€. Adju$ AlAl R210 extrere to the othor. TPA should 6ry - 0.6 V b {fully dl + 0.6 V (fully cil). O HOLD, ith @p€ Conned A1c.207. l0 from h€ orher. -5V Db@nnet lrom A'lA1TPA and @nned TPA to Ground, o2or 0205 0208 ozx, 0v -5 V 0v ov Perfo.
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: ! - . : = :) l : B : . :,}:r*,,3'3:,. ,i: : .' [:üqüffi J5 1ü::ö si:st ö.:iil u40l Frequency-Related Accuracy Problems Fr.quency at which Spcifi6lion is Exc6dsd RangE od which Error Occurs Posible CauP 1OO Hz (low frequency onlyl All ran96 1 Vand IOOV 1 0 V a n d 1 O O 0V 10O V and 1000 V R4A or R4B R4B or R27 R4C or R28 R1A,8or R3 20 kHz - 30 kHz {midband only} All rangeslVand1O0V lOVand1OOOV 100 V and 1OOOV C3 or C25 C3 or C26 C2 or C5 '100kHz (high {r.
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SEE NOTES 14904- c - 299A 3. The time shmn on waveforms is @r(ect for instruments designd foa 4.t4,:' |ineoFration.For5oHzinstruments,incr€setimeshownby20%; a. st $wA b. Aply tsuNu I tuN ro Au, input of 10 V ar 100 Hz.
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, , iliii#;, ,i ;_r;;rs6tl I 'f v4 F v ivü:!:t t{ # t tl : tttta *iii,tif6l:..it@i6 tigl:,ii .14,iä, :*,rii'.i Ser FUNCTION ro AC. Apply Iull,range input at 100 H2 on each range. Monitor convener output at white wire. Should be +1V 10.002Vforfullßnge Input on each range, High lmpedane Assy. montto. pin 18 ol "-*"rti,"r" as AC Converterout+l v r0.002v for preent? ange input. NO '_: i Check conriection' wire) b€üen 46 at ä Troubleshoot A6 reed re. i ffi ##'.r,.rllt{i+WQrr,..',,:,.
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Monitor A2Ol pin 3 lO l s \ E volbge t7 with scope (lnt. SYnc' t€gt? ov 1--t==-'l 6omsl.- -r7vl NO Monitor A1U401 pin 17 with s@pe (lnt. Sync. Slope). Correct Wavelorm: (white retion En A6 and 42. -* assdüly. Se Par. 7-14. 4V1 --l OomsF- Troubleshoot DC Translaror A'1O411 Apply 1 V input at 100 on range. 1V AOTPI Jumper to top Jumper 46 shield end of A6R Monitor left end ot A6C with scope (line sync) Connect right end ol to A6 shield. Monitor lower end of AGCRl 3. Correct waveform: .
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::a ,r'ji ta$l - o-ata ;.ä., tgtEa: l. DC dril.tütgi||tl$Fdn t. Aß ddüCoo9.., orwrrndrüd 3. fh. fm d..Grttt, r 0 lr.fda,|3 hCc. |ür b tlrt;lt wath anD{r r.d3re. ItdadEdc. d ilrdo.E - ffi lü üD Jwr Fd 50 tlr iü|rmB, iEe op-rtion. ogmiig ffity o, tolootn,.r i.il.ufErt! O|i$d ünr bv 2O*. b.tor.
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Ficlinud@D G $dr.@{t ..td Ld llar b S.r FiI{CTION + 5F. Elm tlup a F? TEST lr-s Fhtgo of ]i6 14 rd 15 ot Alt}|{rt. JFu'ldbo+5V. Ar. Raln' 7'l Figut. d T.ble in whiS targ[ öort dotd throügh 4 & A7K5 k do..d o dl .x' €pr tO,ülO X rüaa. X. Y. rnd Z 6 .hould bar ü6 kn LdloX=1 LqtoY-tmtO | lÄl LqbZI 0.699 Tdtilc Tn lm llo t||u r.tt .
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::a ,r'ji ta$l - o-ata ;.ä., tgtEa: l. DC dril.tütgi||tl$Fdn t. Aß ddüCoo9.., orwrrndrüd 3. fh. fm d..Grttt, r 0 lr.fda,|3 hCc. |ür b tlrt;lt wath anD{r r.d3re. ItdadEdc. d ilrdo.E - ffi lü üD Jwr Fd 50 tlr iü|rmB, iEe op-rtion. ogmiig ffity o, tolootn,.r i.il.ufErt! O|i$d ünr bv 2O*. b.tor.
PAGE 156
Troubl..hot & ü5rhoß AIO{19 4tO. S... Flgm ,-2O. Tm I Ul 1 t$ 3a9OA o. rrgr f,rd r.ris b lß8ü. Dp qrb wlESr bdFs of A7R22ryd 23. Troubl..hoor A?CRIOüa ll. A7Ot. Figure7-7. OhmsConverterTroubleshootingTre€.
PAGE 157
- 5v (ti! 4 ! 2 | aaaa r-a;---l t i I v wc + t7v (t-u w H -r?vd-uwr +5V6-UWJ J 8 ---7:-t-a--a-ä6 | | rI-rr ._ _ !)-) obwx f --i-a-\ l l --?a-r t_iub_s!!h " " jl < o o o ' ä ; - = ; ] i l l ä| ä il5 | r i a a a a a a a a a a a o a a a a (, e*-ä *i ä,ii ru*nir+lU ,-..E :E*.E{E,"E "TT Tt" lt ; ll l-l t :.:.. ,:..,: $i'iäleffi G,E;ff#::ri. l .K aJ rrrr r'l--T 3 ; x 3 3 l-l c E c E t fi I i l " , t r l - l :i #l'[s]ri:ieo,e*l ß*i l . l !|.J- ül . '.i .' . ?. .
PAGE 158
NOTES: 1. ll rhe 34904 has the speial annunciator display, the a$embly dBignation is A20. All A3 @mponent dBignators alp apply to the A20 6semt lv. 2. An Gcillospe is required for rh6e checks. Figure7-8.
PAGE 159
3 H jd ffi ffi ffi ffi ffi g a a a a a a a a a a a a o a a a ' n ^ r T _ l ^ .-. Il t l ',Lj,lll l s l i l'L--l =LJ. --- ' ' __- - j - l i ti; r.r""..........{ r.'.''......1 n l3 ,lJ Tll'R ßt i :l .lJ ,lil n i t:l Il Tl' trl :.ü [El* !#W.' ü::iliiff" oa P' oa ä - it tl'-'_ _,,_- lil9**effi!+@@@@@ ::= -t--ln fr-.ti f*#i**$Sr@@ee€6e* iiif itiFtiils i$##l@@@@@o@sso omo 9 l i I I t -L,r_!-*!i " t- Na ä -- -;-----i'Ta--- AI tlp Port No.
PAGE 160
?lfo-l ::.-Joc :r 1llsalqnora ? ,.-,lg a :: ::: oulpeai ]carloJu! salFlpur Morrvr_ .t:t :,ta _t : . - -- , 0 + .l ::: uälqord aql alelosl 'l oN ls31 or slsrl bulMolloJ aL]r asn ^llerued u! slaqunu lJa,oc lo af,uänG aqr e s^eldsrp luaunrlsL' etqeleadar ll t t: ! ::: r0 l , ; 0t'20004 0,.
PAGE 161
Select TEST No. L Set Sample Rate to HOLD. Iniriare readingswith MAN trigger and compare to list ot @rrect readings sh@n ll not recl, with neous all readings are corcompare readings lists of possible erroreadings low, to tiel shown determine readings obtained il bethe are iden- to any set ol readingE listed. Ser Sample Rare to HOLD, Function to TEST. Flange to 2.
PAGE 162
S€lect Range 6, initiate one smple. then *lect Range I and aniriare one €mple. smple, then select Range 'l and initiate one smpte. ls Display + .oo01 68? Check AlU15 and A1U6 with Logic ComFrator. See Note 1 - Check A1U15 and A1U12 with Logic ComFrator. See Note 1 - CheckAlUl5 and AtUt2 gs {or Test No. 1 ).o24 oo24 @24 oo24 9032 oo24 t.o24 n.24 n2.4 I x x O L It the inslrument displays a repeabble equene of partially correct numbers in T6t No. 1, use .the following lists to rclate the problem.
PAGE 163
Initiate 6 mre smples. Disploy should read: + 0.09032 + 10.0024 + 200.024 + 400024 + 80002.4 + 6O0O.xxOL CheckA1U15 and A with Logic Se€ Note 1 . 41U15 andAlUl ComFralor, See Note 1. Also check A1U16 pin 15 ComFrator. Displ cotre Check AlU21 ComFrator. S tor Uprange or + 000.168 04.oo24 o20024 .o10024 0.09032 10.0024 200.024 4000.24 + 00018,4 6000.xxOL r l 080.024 + 0.40024 + .6OO0xx OL +.0.80.024 + 04002.4 600o.xxot | | I I | I \--Troubl6h@ting + f-l .2ooo24 0.09032 r0.0o24 t 2cf,0.
PAGE 164
sai Initiare 6 mre smples. Displaysho(ldread: + 0.09032 + 10.oo24 + 200.024 + 4000.24 + 80002.4 + 60O0.xxOL Range Al U21 with Logic check AlU16 pin 15 r l 2OoO24 0.0s032 10.oo24 + 2cf,[24 + 00903.2 + 10.00.2.4 | | | I I + | + 020024 r.010024 + .0.20024 + 01002.4 - 600.0xxOL - @.00xxOL f-_l + 00:).032 4ooo.24 80002.4 + 40.00.2.4 + 800024 + oo.9o32 Proceed lo Displa Troubleshootang suq- Check 41U21 with Logic ComFrator. See Note l. Also check AlU16 pin 14 Ior Uprange ourput signal.
PAGE 165
,+ { - 5v (t-Xr w6 +r7v(i-l)sn -l7v 6\wr 4 l z I aaaa +svd\,rf iE :.. - ; a-. l - - - - - - :''|: a '.€ D t l a S"' IRI .i trl !U- $ ii'! +* -- J l :.1: ---- a 8 a a a a a a a E+ "n' 'n 1-1" if-l' I r l rI l r l l r l ,L-l l'l sl.l 13 !'J- cnr wx -i a:-\ ' , :lJ l r l ,L l_ .r---1. || l{l € l - l .'LJ- il" lsl .LJ_ .K aJ -tt s,-.' ?:a !a , l rr r1"l-l 3;s39t-t iTrTTl5l ,L--i 1-t t"l l5l ,! :L--.
PAGE 166
Connect oscillosope to AlTPU and monitor State Clock output. Set scopeto Inr. Sync +Slope. Correct waveform: SEE NOTE t. Monitor 1 1o l A l U l 2 . M( Sct po YES + i Monitor pin 11 ol A1U4. SE€ NOTE 1. Monitor pins and 7 of A1 U2. :;[-r l+5nsl t'! .o." 1- _,;ljlYES Monitor pin 14 oI A'lUs Correct waveform: E NOTE 1. Monitor pin YES 1U4. Both pins should NOTES: 1.
PAGE 167
SEENOTE 1. Monitor 11ofAlUl2. pin 1 of Alt-J7. traggerto +5 V lest on A1A1. Exr Sync, + Slope. Turn 3490A OFF back ON. Voltage at I should remain low approx. 10oms, then A1U19 and A1 U21 Figure 7€, Note 1. so Hish(+ 5 v). S E E N O T E 1 . M o n i t o rp i n s and 7 of A1 U2 ';1;:-*"*-'' A ' t 0 2 ,A 1 0 3 . l+5 ms-l ltrlt'tj ,o." 1* :lll-tlYES ot uu' U.T:'"",'J"',l,:,t-:t -+iO.254s SEE NOTE '1. Monitor 3 of Al U6. Correcl wave{orm: -lu-lJI F :1"/\/-\ soms l.rI E NOTE 1.
PAGE 168
Replace AI U'16 wirh known good Frt. Switch cnges and lunctions, observang decimal poinl. Should correspond to Enge. Return to GeneralTroubleshooting Tree, Figure 7-4. SEE NOTE 1. Monitor Din SEE NOTE 1. M@sure rcttage ar pin 2 ot A'U12. Should b€ < + 0.5 V. SEE NOTE '1. Monitor iignal at baseof A101. Corect wave{orm: SEE NOTE 1. Measur€ rcltage ar pin 1 of A1u6. Shquld be > + 2.7 V. Reter to Logic Troubleshooting suggestionsin Paragraph 7-39. SEE NOTE 1. N/leasure rcltage at pin 2 of 41u8.
PAGE 169
,j ltr *1 g S+ft$b!t}"oo. € -&Ug E.E?*;f--"..--l ,r".r.l'" F -^o- - sl \f- -Jt l+ 1 +**o; € ffi - Ä, hp eut No.0349O-565O2 Rev. C ä ,l i*l l l l I 1 I I I *8o5Tr ts* *++1,,{l-., o o o , ? T r I u al r . t T fl ; l ) :--* t , \ -r / r---+ TT r u v tHttttffi- +EEE8+Hr, llJtlfr.
PAGE 170
t-;l ' ' 1 ,i "- 4 E r 4 8 r |--ur--l ft wlf t 7 4 8 r 4 tt u4-l f-C-l 7 t 0 7 l 1 : o c H f\--------. f i - ,t------' - r { {| *I *| -| *| |l| ' 4 9 hp Port No.O349O-66509 f t l u f 6 8 l K 8 t - Rt8- R26-R30- u 6 t- us-l t l 4 T 4 i l 4 1 n n l v 8 i- url B l T l 1 4 I- u,-l 4 8 1 4 -cr- /:\ _RZ7_ -R22-R2l-R28- _R'_ -R6-Rr3-R5- _RJZ_ \q, / -R3r-Rzl-RrO-Rr2-R33- -R2-R24-Rr7- -xzg- -K5- -X4- -Xv- -nZ5- Tl-ll't- l ' , .l'. l.
PAGE 171
s@pe q to lnt Sample sync, R. AlOL and 11. C for all r2c .:Jt r At(fl.St@idbe+5V1. :',' t 5.S v. sh( for LC oin 13 of AlOUl tesl ar in previous sme except High lewl is + 4 V Troub leshoo A I 5U5. Monitor pin 3 of A9U3. Correcl wave{orm: _-] | b_ o.2 ms | ;.,,\AA& .
PAGE 172
Sampte Rate to FAST niror AIOUT pins 3; and 11. Coiled wa for all pins I .llj-*#ll l._ zooms-+l pulses ,m should for LOW be in rrue out pin 13 of Aloul pin 12 of Aloul pin I ot A10U2. Correcr Monitor pin'l ol AgU3 Ground scope to Inpul except High lewl is + 4 V Troubleshoot A15A ;:,\^ÄÄ Set Sample Rate to FAST f+- zoomsl +4V i-J Troubleshoot Doubler, A9U3 Frequency and AgU5 .
PAGE 173
ti'1::i.'::":: i ,, .1.1.1-:t.1 .; t-.,'' pin 3 of I r-- ';=c ::i:,i.i't or Inguard gro .l[=- -,.*-- ,:i. ;;i . '. .l-,"t i-, ea .f,',." ReplaceAlOU .,: H':-. :'J.'l YES F.:; t.:. :_'.
PAGE 174
tor pin 3 of A9UB { s@pe to Inpul ). Inguard ground. . f= b3mtl ,[J-lr Figure 7-11. Data Output TroubleshootingTree, Option 021.
PAGE 175
_ i.r . l aa ! ,X i, A Arl 7 z hp Port No.o349o-665t1 Rev.C I tn i-,F---+r |_-]|-;q I, i. J? -l t'it' ::i. r ; ? .,ä ci€ a 8 ß a [--r-u3--l l-- u4 I :--------j i------i i-------g-----+ *l + t* I i!-u;i t l l r l H t # ffi q .l .: a1 # @ ffi U1.U6 + g gig fq K !4$- B - !597 i . : ,ä re** t,E: ä fl w E AITAI h p P o r tN o . 0 3 4 9 0 - 6 6 5 1 7 \_ At7A2 At7 hp Port No.O349O-60308 hp PortNo.
PAGE 176
Exec. input ) 5 psl. LOW pin ll NOI€S : 1. Fron! pansl rang€ and function selection mu{ @rectly before thir f@dure is attefifd 2. An osillo*or !4901- o . 2s! is rquired for th6e chcks.
PAGE 177
undionAendBHIGH) lvbnitor Dab a ProFm Exec. )55). inprr No.2 {R.nge 8 LOW, A HIGH} Flag 5igEl pins 2.and Er 1zL l2U1 while apglvang LOW pin 6l to ground. RE + 5vr-r *1o.4ßF_ ovl +5V- -1 =r^F t'"'h."'-l .
PAGE 178
bmtely progmm TEST Fuodion 6r A and I No. 2 {Range IIGH.8 LOW,A HIGHI. lonito. pini 2 and 14 ol Rep€at prwious ch4k, monitorlng pin 7 of Al lUT sd 8. Correcr '12U1 while applying Em Ex@te. ddEwfoam: PIN 7 +{o.c'"F rtN 2 *16t1- OVl-r PIN I5 l+ 0o6 msI .::LfLr P I NI 4 |.0o6 ms{'l -:JL|LT L6Vrn9 gog€h fevioua ch€ck. aS rcltagG et inNts A'llUlO .
PAGE 179
START FEMOVE A4 ANO REPLACE Ag AND 436. MESURE + 12 V. + 5 V, ild -2 V OUTGUAND VOLTAGES. +I2V AND .2V AEST POINTS ARE ON A32 AND +5V TEST POINT IS ON A33. VOLT. AGES MUST BE MESURED TO OUT. GUAAD GFOUND TEST POINT ON 433 OR A3O. ALLOW +/,1ü TOLLEflANCE. BEMOVE ASCII INGUAFD A$EMALIES A g A N D 4 3 6 . I N S T A L L R E M O A EJ U M P , E F B O A F D 4 4 I S U P P L I E DW t T B O P T I O N OSI IN CONNECIOR A1J7 IN PLACE OF AS.
PAGE 180
BEMOVE 44 ANO NEPLACE Ag ANO A36. MEASURE + 12 V. + 5 V. sd .2 V OUTGUARO VOLTAGES. +12V AND .2V TEST POINTS AAE ON A32 AND +5V TEST POINT IS ON A33. VOLT. AGES MUST AE MEASURED TO OUT. GUABO GAOUND T€ST POINT ON A33 OF A3O. ALLOW +/. 16 TOLLEAANCE, IROUELESHOOT OUTGUARD VOLT. AGE SUPPLIES.+lzv .nd +5V sUPPLI€S ABE LOCATEO ON OUTGUAFD MOTHEF EOAAO A3I. ,2 V SUPPLY IS OEVELOPEO FROM SYST€M CIOCK MULTTVIAAATOF ON A32. CHECK OPERATION OF ISOLAIING PHOTO.
PAGE 181
r'AT€ REPAIF KIT AS E FOLLOWINGSTEß TO - VE ASEMELY, 8 U N C O M P L E T EO P E F A T I N G C H E C K I N PAFAGFAPH 5.45 TO VERIFY PERFOF. IF ISOLATION S€MALY AS ANO A35 15 DEFECTIVE, GE NEPAIR KIT NO. OSS@I3 TO NEPAIB 8Y R€PLAC. ING DEFECTIVECOMPONENT{SI. IF INGUAFO PFOGRAM ASEMSLY AS IS OEFECTIVE, USE REPAIR KtT NO. @96@5 IO FEPAIR AY BEPLACI N G D E F E C T I V EC O M P O N E N T { S I . CONNECT LEOP LINE AT REAR PANEL @NNECIOR TO GFOUNO U12 PIN 9 TO PIN 24I ANO MONIIOR LFST AT COLLECTOF OF A3M1.
PAGE 182
.-.;l @ä +tr++o +w*+il [l+@ r ö 't'*, T (6äl +fr;+tqT llllllllll *üü**ä TTTTTT hp Porl No. 0349O-66527 Rev. B l6|-------19 | ,,c | "" ----d 16 ut4 lllillill A28 Port No. 03490-66528 Rev.C I 16 9 I f-------t ,l s 'öl--.le ,. l" [t - o ]l l u . ' I .
PAGE 183
SET SVH SYVITCH TO IRACK/HOLO. FUNCTION TO OC. RANGE TO lOV, A27KI SHOULO 8€ CLOSED.SET SAM. PLE FATE FULLY CLOCKWISE.APPLY 10 Vdc INPt T. II'ITH SAMPLE/HOLD SWITCH SET TO OFF, VERIFY PFOPEROC VOLTH€TER OPCRATIOITIOF 34SOA. FULLf,AI{( YES APPLY RANGES IN BOTH ACOUIRE/HOLDOP CHECK VOLTAGE AT PIN .I NEAR TOP CENTER OF A27, SHOULO BE NEAR ZERO. CHECK WAVEFORMSAT PINS 2 ANO 3 II{ SAME LOCATIOI{. EXTER. NALLY TRIGGER SCOPE ON TEST FOTNTK IN LOGIC S€CTIONOF 3ISOA MAIN CIRCUIT BOARD.
PAGE 184
It{G @R- SET S/H SAYITCH TO TFACK/HOLD, FUNCTION TO DC, RAilGE ?O lOV. A2'K1 SHOTJLO8E CLOSEO.SET SAMPLE RATE FULLY CLOCKS'ISE.APPLY 10 v& tNruT- FULLAANGE INR T Ot'l ALL MLY RANGES IN SOTH TRACK/HOLD ANO ACOUIRE/HOLOOPERATION' CHECK VOLTAGE AT PIN ' NEAN TOP CENTER OF A2'. SHOULO SE NEAR ZERO. CH€CK WAVEFORiilI AT PINS 2 AND 3 IN SATE U)CA?ION. EXTER. NALLY TRIGGEB SCOF€ Oil T€ST ?otNT x tN Loctc sEcTtoN oF 3!90A MAIN CIRC-I'IT8OAFO. SHOULOAE: .l U Lov PtN3 HHoE J ll +45 V L_ 0V PUTSOF r V.
PAGE 185
M YGE CHECK FErS azot, 02 Aito o:t FoR LEAKAGE. ATSO CHECK A27C9 ANO CIO FOR LEAKAGE. THAN Iiü I 'NG LESS THAN CHECKVOLTAGEAT A27TP2, NO CHECK FETS A2706, 07 ANO 09 FOR LEAKAGE.ALSO CHECK A27CI2 AND C18FOR LEASG€. . oft-".*l tr 2uo30FJ5, l EB SCe€ ON I EC S€frtOil OF I f mO, + SLOPE. I 12 V ANO ORIFTING L€SS THAN REMOVEGROU]IDOONIITECTIOI{ FROM LTST. WITH INPUT SHORTEO. SELCCT IO V RMGE, SET SAi'PLE RATE TO HOLD. M€ASURE VOLTAGE AT N7P3.
PAGE 186
-- ti TO A2 LEXE hp Fort No. 03490-66527 Rev.B l€f---19 l " l H ,. i---i,l t6 [l-] ut4 Itlllllilt iltf il I A28 Port No. O349O-66528 Rev.
PAGE 187
8Ap|-crt{ot sET s/H slriilH to acoutRE/lrolD Ar{D toa{ron a IE PotftT a5 aw|rcH To rR^cx/ HOLO, TAXPLE RATE TO IOI.D. O?€FATE FhOX A1{ EXIERI{AL TRIG. aE rH€ iar|E €xcE7t Fon oELAy ADDEO AT BEGIIIilI]IG OF TRAC€ IE. IORE SIGI{AL G()€S HIGH. gtt FcE. t|(tt|Toa wAv€Foau IHHOA' AT RED ffRE, ?II{ 2, '{EAR IOP C€I{TER OF A27, EXTEFNATLY TRIGGCR 8CO?€ Oil TEOATIVEGdMT EOGE OF .AIPLI'HOU) TRIGGCR !G. : l lO V Rilc - t28a r t.v Rilc -El2,6f -l VRlfG-2oaaF tilru?. xrav.EFoau 810uu) aE: ;,t:r.
PAGE 188
SgT S'H I|S'ITICH TO OFF, RAI{GE TO IO V. SAIT?LE RATE FULLY CL@X. TVI8E. OISOONI{ECT EX'ERilAL TRIG. GER. I{OI{ITOR ü'AVEFONil3 AT NilS I, 2 AiIO 3 OF J5. €XIERNALLV TFIG GER SCOP€Oil TEST FOINI K It{ LOGIC S€CTION OF 3'l9OA llAll{ CnCUIT EOARD, + SLO'E. S}|o{,LO AE: üET .srH tuttrcH io AcoulRE/HoLD ailo xoilrToa 8Af,E FolilT As lN A}('(,LO ?REVIOI,'3T€8T.WAVEFORT .!E:?HE tAIE'EXCEP? FORD€LAY Itro€D At.gEGr{für{G oF TRACEgEFgiEsrg{ LGOCSHIGH. rävnG.ii;r I YFIG-6!2.
PAGE 189
YTFTOTISAilD VERIFY NA. ALFUNCTION. MONITOR VOLTAGE AT A2ATN PIN 15 U'HIL€ CI{ANGING S/H STIITCH FROil OFF TO TRACK/HOLD. \24U3 OR tjl|, OEPENDII{G >r srcral ts r{@RREcT. OO€S VOLTAGE CHATGE WHEX S{UITCHFOSITIOTIS CHAiIGED? A28U2 IS PROBABLYDEFECTIVE. A28U:l PtN r3 GFOUT{D€D.mot{tTOR VOLTAGEAT A2ATß PIiI 16 WHILE S/H SIYITCH FROT OFF TO DO€s VOLTAGE CHANG€ WHEf{ SIVITCHPOSITION CHANGES? iTOI{ITOR VOLTAGCS AT PINS II AND I3 OF A28UTOWHILE REPEAT|TGIHE TUTOPREVIOTJSTESTS.
PAGE 190
hp Pott No.
PAGE 191
Remow A13U3, Set RATIO $itch to EXT REF 10 V. Ois@nnect dc standard from INPUT and connet to EXT REF lermMonitor wltag€ at A13 test poinr C whil€ applying EXT REF wltages below: Select Test 4. Set RATIO switch-- to INT REF. Conn4t dc shndard to INPUT terminali and apply - 10.0000 V. Display sbould b€ + (x).9995 I {'lO counts + dc atandard qrorl. EXT REF TPC +20V +13.6ro+14.3V ,20V - 13.6to- t4.
PAGE 192
Remov€ 413U3. Set FIATIO sitch to EXT REF l0V. Disconnect dc atandard from INPUT and @6net to EXT REF t6m. Monitor voltage 4 Al3 t6t point C whils applying EXT REF bltäges below: Replace A13U3 in $cker, Disconned dc sbndard from EXT REF and connEt to INPUT terminals. Apply - 10.0000 V. Select TEST 4. Short EXT REF tfrmiEls. With RATIO set to EXT REF 10 V, display should be 00.0000 t. EXT REF TPC + 20 V + '13.6to + 14.3 V - 2 0 V - 1 3 . 6t o - 1 4 . 3 V Refer to G6eäl Troubles*rooting Tree, Fig.7.
PAGE 193
Ralio Adjustr4rap6 5-79. lc W8 disconnected, pin 2 oi connetor , ard U2 removed.set FUNCTION ro DC, to 10 V. Apply any INPUT voltag€ with h*n below, and apply I l0 V to TPC. bgaclevelsa! sh@n: lNote 2l TPC . 1 0v +l0v 1 0v -10v TPD LOW LOW HIGH HIGH U5(12) HIGH LOW LOW HIGH Monitor rcltage at W8 conn*tor pin 5 while-spplying+and-loV at'TPA. Voltage at pin 5 should be+l0V and-10V respectiwly, HIGH LOW HIGH LOW Replace A13u4 or 5 as prwious indicated by checka. Atter reFir, go to next step.
PAGE 194
Monitor rclbga at W8 @nnedor pin 13 while applying + .nd - 10 V at TPA. Voltage d pin 13 .hould be+1V and-l V r6pctiwly. Replac€ Al3U2 in socker. Monitor wltage at pin 1 of W8 @nectff whi[6 applying+and- 10V at pin 2. pin Voltage at 1 should b€ + 10 V arü- l0 V respoctiwly- Chsk BATIO ilitch laqts and wiring, @n- A13U3 by substipan. Als r 'e 1 389,10 ard feedoh A'l3B13 thru Figure7-16. Ratio TroubleshootingTree.
PAGE 195
A8 A12 A10 A17 A22 A15 A9 A 11 A13 or 426 A3 A36 A34 A35 U1 A30 A33 AS2 A31 Rearof Instrument Figure7-17. Location of Assemblies.
PAGE 196
:? r€ d ral r:ä # .:..4 ']ri* i3 ä #l 1:.i11 .
PAGE 197
| ö | l:liüÄ a i q ; + + + F +, rl ,@ l; I' i;E E r-----\ ' | | I cro5 ll cr@ ll croT I I r-:l \--l\--l\_-/ \ o e l l :@ i: äfrEBo / :: 2' rö*et FT$Tfr.^ FFtügäg:: -r7v 6.\)*t +5v(r!wJ\? t'
PAGE 198
@ +ö 7a 6a 5a 4a aa za r--l Te f-l .ii .i l l i q ; t l l-l tl ltJ= l n l,l L-J c20t i i aL 2 . " F>>, \'------qc!) i t ; i l-l'ooao- !-:((_6_6____:______.i_i _iili_ "@.oooooo gääsEFaF ä ä*än o o i : f o A Eä*$F$ifi Hää3$$g ; :i:eeiyi q trr: I I D I 1 5 ls | :ll:l:ttt F 3 !. *rouFt, q4?FE$F$ qg*$Ht I,!^ -..uüS @@@@@E j \7 I - i-"---;--qq=l f:- f i m Pi ? I $ { $ i i +Pf g s üä,ierispgglg*@ @(D@@@@@ ++++++++f++Evvvvvvvvvvvv eeag tl* ll AI lrp Port No. 0349O.
PAGE 199
tR429 | L-__l r9 l5 ö l,i fa 6a 5a 4a ra za E ii- --:--äii .i-J -::ff- "@.oooooo ö G .IVC--oWAA #tFtägn$fe +i+t drE+Ff?F+P+ lA t;4+qggqg q$*$$t Ii^ aoooE wa8 +5ovd-U - 3ov 6\ m ; i +i i { f +rrl pfs sf@ *EfE U* 11 : _,,.
PAGE 200
Figure 7-18. 3490A Block Diagram.
PAGE 201
R E F EBETTCE DESIöTATIOtIS ASSEMALY REFERENCE OESIGNArION ÄSSEA,'BLY ÄSS€MALY PART NUMBER NAME UNCLUDES A2AI SUBASSEMELY) DENOTES SIGNAL --i<<+---< SUEASSEMALY OF A2 DESTGNArOR tS A2At) ///(CoMPLETE ? INDICATES XAz AND PI AI oscIexoro:cxoeeen l qlR_E9OLOR:COLOR COOEtS fHE SAME As rHE REstsroacoLoRcoDE. FtRSr - L"^f,T Ff, 3^i,',fP?fä, 3:'^'l 3 WüE:,Ä',li T_AEIH.IRDtNDtcarEstne uaanöwea srRt p. (e?3, D€Nor es wurt aeot vtl wine) re2 DEST6NATOR lS A2R4 ,.v.
PAGE 202
ti i. ''--- -- --- ;- q- .-- qe jqj - l "@^@@@@@@ -'lli- *-]:s qp?f8EFgfEäüFffä w!8 +++ü l* gf,?f$??*+ JÄ -r.' r" Ti" l-;Ä lrh++rüql @@@@@l.rl le*s+c Bi;-r8iäiiäöäö*+B a r e l c ? i . ,, r i i m ü c a i ? t t ' r l l L ua@.l @ @ @ @ @ @ @; i ? $ i F i + P ??$ ? $ @6'@@@@ggfggg;s@ a WEE - rzvd! - 5ov 6-l) E s f[E* n AI äp Porl No. 0349O-66501 Rev E "l ä ä g g $ I fl c 5 . c 6a L r . L 2 AREONBAC|( SIOE w9r---t sEEroTE 7 -..- @ -'llelQg -f lJ -ro- i .9 I ,.
PAGE 203
I {LOIA) X.OI ATTEN L FROM U40t {7) O V E R L O A DP R O T E C T I O N +5V ) VERLOAO P R O T E C T I OHN ^ (HOVPO ö FRoM u4or ilo) +5V R402 4.7K R40l 4.7K (LIR) XI ATTEN REEOL FROM U4OI(I9) 8 K3 50.oK 50.oK I RI 4.95M I IOOV AOJ t I I 4 l'''t 99.975K t - T -.11 \3, GUARD I Il-CUARO I II +t7v -t7v l l I V c l l l Y-Y.
PAGE 204
-T6azt DCAMPLIFIER +30v R509 45.3K A A c 508 o.oo47 R525 t87 c 501 o.l "i' + 3OV +3 OV SAI\4PLE,/FIOLDOPTION I I l7 R3 5K I A R408 5CK I ruorerzV {LIA)XI ATTEN L FROM U40t ( 22) AA ,A 409 - 30v c503 30OpF R4il |5 0 K K R4tO 4.7 K 2--J BOOTSTRAP AMPLIFIER cR5r3 R429 20K R524 t5K Rt3 48.7K Rr2 49.9K I - t7v -l7v I I I I ;..
PAGE 205
iov c 508 o.oo47 R525 187 R5rO 45.3K S A I V P L E / H O L DO P T I O N R3 5K VIEWED FROM TOP 17 NOTE 3 + 5 V T O R E E DD R I V EA N D O V E R L O APDR O T E C T I OCNI R C U i T S A -Ä 4-< ' \ o r/ - ,.., WBB +3OV TO OCaMP -_l-b-30v +30v ro Dc at\4P -\--. +3OV wcc -30V d1 WEE -l7V TO SWITCHING +-*--J-*\-- - 17V WFF -3OV IO 66493 '-----J+b- - 36Y l,^J 4 - ),^J 4 - t 2 e/l?)z e(1-2)z zV 7\+l 8 I r: FROM POWER S U P P LI E S 'lr AMPLIFIER OUTPUT B ( L NOT r.
PAGE 206
sPAcE t ,zl-----_l: ,ä, }7 "tär;; 'Y 'Y, | /'BLANK l o zt r ^ z ^l .r 4 < ö t AMPLIFIER OUTPUT TO INTEGRATOR R207 4 N O T ES , I. JUMPER IS REMOVEDIF SAMPLE/HOLD OPTION IS INSTALLED. 2.R429 LOCATED NEAR REAR OF INSTRUIVENT A N D A C C E S S I B L E T H R O U G HR E A R P A N E L . " 3 . W I L O C A T E DO N A I A I 4 . V O L I A G E S w l T H l N A l \ , l P L l F l E RM E A S U R E D WITH INPUT SHORTED,IOV DC RANGE, SAMPLE RATE TO HOLD. 5. IF SAMPLE/HOLD IS INSTALLED, R5II IS BY A 6.
PAGE 207
$rs*$roffia C I -A ry@ü@ #srynsfriW äafr il:$^onibD "H" t"'v,i *,i,r,+*nu f+fry$ry++ F: p"@ ..(ä# c?o7 c?0f f- AI ,lp Port No. 0349O-66501 Rev E ät:äsa^FÄ l^s H e$$8+fE+ t Ff qff" HF+qSe4 '.Y 6ö Y *@$@ .ö ,ä{. i , * , *F-8q/"i.,@E ..pp'z: i iq * , i n Ot @I r 9 f s\€9y @ ":9"i **H++ ,{9.+*+pc+++ czo1 AI ,tp Port No. 0349O-66501 Rev. F I-R-r lr 5. F -llr r B l l - l ldl l"l L_J a P t D P l 9 w5 \r,€ a D O T I N D I C A T E S P O W E RS U P P L Y END OF JUMPER A IA I h p P o r tN o .
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( oY3 4 s o - 6 6 5 0 r ) M A r Nc r R c u rars s E M B L lp/0 Al I l | I | I W w z ----a-r-r| +:ov +rov | -3ov -3ov A A ----d+-b- W5 NorEr FRoM | -sv---<*-l---5v SueeLv | +rzV ----d-tr-Ew7 +5V -----d-r-b-w8 _tZV ___-<--b_ POTVER < INTEGRATOR W6 +tzv c203 o.33 +5v _tZV 3,t7 FROM DC AMP OR SAMPLE/IOLO 7 (HCES)SERIESSW H FROMAI U9 (I2) c2to 3.3oF NOTE: I . A I R 2 I O , A I R 2 2 5 , A I R 2 2 8 . T E S T P O I N T SA , 8 . A N D J U M P E R S I V 5 - W 8 L O C A T E DO N A I A I . 2.
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.t ZERODETECT NOTE I ffi l, JSTE I \,*," ,A?fli -t7v R2l7 too ffi -t7v cR202 T U RN O V ER p 4 Figure7-21. SchematicDiagram,Integrator and Zero Detect Circuits.Al .
PAGE 210
rtr l ; l t-T" l r\ l ; l t"l *r ."-DE6rr-----l r.rblhb-l"- - -:-,1 . ; : t AI äp Porr No.0349o-66501 Rev E a -5V t-F@ lLJF l a +5V a +r7V a -r7V a +30V B. a a D w2 w3 h-,,dn - .3 o vI Faq l_l l"l B E ] . GNO a o P P P s b b ? a A w4 - P t P t Pt b \ W5 a D \ f \ u/6 W7 a Pt ' wB a . D O T I N O I C A T E S P O W E RS U P P L Y END OF JUMPER A IA I 3490A-B- 29A! h p P o r t N o .
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M A r N C T R C U TATS S E T V B (L0y3 4 9 0 - 6 6 5 0 r ) RATIO REFERENCE ASSEMBLY OPTION O8O (O349O.66513) I N O T EI wr I +sv--
PAGE 212
R E F E R E N CP E O L A R I T YL O G I C : D AMPLIFIER + REF INPUI INPU'T /^"'i;;' \y \y +REFERENCE SUPPLY wo NOTE R3t6 to.oK INVERTING AMPLIFIER F R3r7 20 NOTEI a I -REF - REF R 3t 3 2.
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R E F E R E N CP EO L A R I T YL O C I C : FOR INT LOW FOR + REF INPUT -t (HRAP) R A T | OP O L T O A t U 4 0 t( 2 7 ) 8 T H R US , / HO P T I O NI 8 J6 I cR8 4.75V I w8 WN NOTE2 ( HI NP ) INPUT POL FROM AIU22(8J 7 HIGH FOR + INPUT LOW FOR - INPUT | - l l ---------r6 AI U30 a t 3 u t -4 a ,'^'. -.\-/.- { T O PV r E W ) \Z \Y K - 9 INVERTING AMPLIFIER , I u3o! ->---t- io':l-.
PAGE 214
-5V g-l)wc + 17VC-t) Wx -17v6-DwI 4az | aaaa +sv(t-!rwJ o--trwx f -- a--;l t \-!:-- --l-f r s t l _---:)-J a-'^iDa-DZ 2 Jt | (((t,{r | r-u------J99 3 ; ; - t ' -T ---- r-\ I ß t-' :;.: r i: ,iä:r .;ä:, ( * 9sö$! ?ääij'O *1 ':';ß?;;i-:,*$1,sE1i;V ----,, F.---*-a ,."8.E*.E+E,.E l l " n " | | l:l lt - l l " L - r "fT l'l .L_t a fil . l l =l- l ,l T-T l-l N' T_l' I l a L lil r* l -l l :t:''i,t"",. l FffiilHffiffi:tr r. r -.1 ;'l .X ..;e!i - ._ _ , - i i . ' .'o,ffi ';";! .ll l:lt ri.
PAGE 215
, / o A l I M A r Nc t R c u r Ta s s E M B L y( o 3 4 9 o - 6 6 5 o t ) DATA COUNTER CLOCK +5V 7 o.ol (LTXF) TRANSFER L FROM UI8(6) (HCDC)CLEARDATACOUNTER F R O MU 2 3 ( 8 ) ?r ( L T X F )T R A N S F E R F R O MU t 8 ( 6 ) NOTE I 4Mi;Q 3.333[iz FoR /\/ 5OHzOPERATTON +5V (LCDC) CLEAR OATA C O U N T E RL F R O MU I 6 ( 4 ) 7 l-r.o*.
PAGE 216
3 UF F E R S DATABIT O H O A T AB I T C H . \. 'r./ , > - DATA BIT B H . F- I >.L/ T I M I N GC O U N T E R TO OISPLAYAND , DATAOUTPUT J I l._ :ATA BIT A H to,@oF --i rm,@ c@{rs $@OR eo,ooo --l couNrs I--\------lJ | \ I I I | 7 T I M E C O U N T2 (HTC2) TOUt5(t3) ( H r c 4 )T r M EC O U N4T T O' , a , O ' I ( H r c s ).
PAGE 217
- 5v c.lJ wc 4 f , 2 +t7v(t-\)wH -t7v 6\wr | aaaa +5v 6!wJ $
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M A r N C T R C U TA T S S E M B L (yO 3 4 9 0 - 6 6 5 0 t ) T U R N- O N C L E A R CIRCUIT WJ ,"\ ö-+5V +5V FROM poweä-su.pplV < I NS T R U M E NT T U R N- O N T U R N .O N I T O I TO LOGTC|RCUtTS I AIJT(N) l.
PAGE 219
L O G I CS T O R A G E E\- ( H MTC) MAIN TII\4E BIT C LCMC FROM UI6 12) ( H M T B )M A I N T I M E8 I T B L C MB FROM Ut6 fl6) ( H M T A )M A I N TIME BIT A LCMA F R O M U 1 6( 3 ) L O G I CO U T P U T DECODER STATE STORAGE +5V YMA I YM8 | YMC I TO U9 vr.
PAGE 220
IC STORAGE I
PAGE 221
LS HC T R A N S F E RA N D Z E R O D E T E C T +5V ut8 A N D- O R I N V E R TG A T E I I M E C O U N T3 2 ( H T C 3 2 ) (HTFE ) T A N S F E RE N A B L EH F R O MU 9 ( 2 I ) (LTXF) rnarusrER L 6 ro u?,4 (HAZD) A N A L O GZ E R OD E T E C T F R O MU 2 0 3( 7 ) (HZDT) Z E R OO E T E C T H T Ou t 9 f l ) INPUT P O L A RI T Y STORAG E 3 HMQC O U A L IF I E R ENABLE SIGNALS 5'8 l8'd',tshäl'" iöi,liisliä)31,"q 3Yä1.^.
PAGE 222
{ a1 . t ru1 ä 'J .!t :,*l ^tbEiJf I i-{-( | i' 'bEsD - - JG - -i I !-t ;3C9 ;. il ;J .-.------o-d;] J4 I )ä,1 -_ _, \ i - - - - - - = - - l ,_t:_ i'1 , , P P ? P q\t_b_b_s_ i J5 _-:r-) t-c5o6-c5o?- -l .J g I u40z I i------- @@@@@@ ä ,] e = e N n ä e säü a t gg ; E : r E i i + { +{ i + ' pp* @@@@@@@@@@@@ *späsw: @@@@@@@ esie ff * n F R ür lrl l,l :3 ä 3 3 il t:..1' ,ä ; n 1=1, l-1, il* * . *=_, ; .
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i' a;|"*;,,ilJ**io**l.Io,l r I I NOTE 3 R4 & R4 to I I rao, rnotr paNELf(HrFB) FU o.s', 16 oR REMoTE t ("rrot ru, (HrRc) [coultrea uzrJ (HrRB Z FRoMRANGE I L (HIRA} NoTE I WN 7' | N P U T P O L A R T T Y( H I N P ) FROM U22(8) NOT€ 2 IVW ,. lffioi I S A M P L E / H o L Do p l o N , I I --)"X o(-- r: I 7' (HMTC) T | M EB t T C H FROMUil (9) ,, [**6'ffi-l {.(---:----).F (HMTA) 7' T I M EB I T A H F R O MU t 4 ( 9 ) NoTE2 WT NOTES. r. t,1..11r_ro..ol]roN ts tNsrALLEo, 2. 3.
PAGE 224
6 6 +tzv -6V FROMCR4 FROM cR2 I R 4 4 4< 200K i 2a NC R445 tooK OHMS REF SELECT L (LOMR) ro R4t4 3 aND J3(8) 13 X I A T T E N R E E DL ( L I R ) I I .Rou raotr ro*aa [-{Hrra) FuNcrtoNB H oss'Y 16 cR REMoTE f tnrmt FuNcroNA H ( H r R c )R A N GcE H f I y ? a N G 5C O U N T E R U2tl I L ( H I R B )R A N G EI H ( H I R A ) R A N G EA H NOT€2 WW fs^-rLErHoLD;pi6il-l l l u _ - u40l READ ONLY MEMORY r -J D I S P L Ä YPOLARITY T O P 2 ( 5 ) a J 8 ( J) NOTE2 WV t5 [--soue.e,.
PAGE 225
+l*.- +ä r r.t Ä l l try | | * i ü +qr l l TTI"I xöln RlR a5 i:9 | - | ETf | | AI I I Tf | | , l l /6\Rl I \9trl =l | + t I :! TTf:: i? IUr03l v @ / \ a ? l lailrl ar \_/ 9 6 I e a l I ! I I hP Poll ffi" I I l.' ' 1t,, ,.:,,,: i': r' -nb- -R5-C4aaaa | 2 3 4 _.Ä_ :;' ., -c6- -R8- -nz- -nro- -f"- -Rz- -CRz-r--.ls | I | | lE | l- | _Ct_ _Rt_ - x_ 5 --A4-cR3- '';,,,:t', l,' REMoTE Jto l.: l . l R E M O T EI N P U T A8 h p P o r tN o . 0 3 4 9 O - 6 6 5 0 8 [.
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+3OV REGULATOR toov/ t20v 220V/ 240V t20v/ 240V - 3::,i -3OV REGULATOR ON i FRONT OF INSTRUMENT 'ta ' / io ag curGuaRo powER SI,JPPLY ASSY (OPTIONO2O) o ü rr R TO A29,OUTGUARD S/H TRIGGER assy (opnoil o45) c|7 o.05 OR rr,rorHER rWensuppLy BLocKDTAGRAM 22 Ig t31,.9_uIGgARo I 80ARD (OPT|ON O30) | _ -- COPYRIGHT I972 8Y HEWLETT-PACXARO COMPANY Figwe 7-26.
PAGE 227
,l' REGULATOR Powen l' rr TO Aa OUTGUARD rI grppry assr (optror'r ozot I ', ' .. ..'.. ,',.., oR I O/ H / r r T O A 2 9 . O U T G U A RS rr TRTGGER Assy {oPTtoNo45}\ o ,, -- R l To ßt, oUTGUARDMoTHERi goARo (oPToN o30) NOTES. J-*i \ 9 l l l ouiro \ 9 l l l I\Y | I. Z. IF ALL SUPPLIESARE BAD,CHE IF -I7V REGULATORREFUSEST( AND CURRENTLIMIT IS BAO.CRI OPEN. IF HIGH FREOUENCY OSCILLATI PRESENT lN +l7V SUPPLY,REMO IF -3OV REGULATOR RISES ONLY CRI22 MAY BE SHORTEO.
PAGE 228
+3OV REGULATOR + l 7 v REGULATOR Rr05 ll'aK R106 +r7v aDJ oxarall aj(tocarED Rr07 8 . 4 5K _3OV REGULATOR -I7V REGULATOR 9 Figure7-26.
PAGE 229
I SCAN A \9 FUNCTIONA €/ FUNCTION I €/ +5V ü SAMPLE RATE g POLARITY \5 RANGE B Ü RANGE C Ü RANGE A \? OVERLOAO Ü J f, c C 3 c C 3 O O -n2- R4- R3- DS7 |--*-l 8 t N6 DS6 a N5 u55 N4 os4 N3 N2 DS2 NI DSI I C €g C €J' C €9 C €C . ,s REMOTE DATA A DATA O GROUNO S/H l,lODE L tüt(?^*J C €} DATA B C re2,SCAN C o €, SCAN B A3 hp Port No.O349O-66503 REV.
PAGE 230
DISPLAYASSEMELY,STANDARD(03490.
PAGE 231
; A3 lorseuv a s s E M B L ys, T a N D A R( o Ds 4 9 o . 6 6 5 0 3 ) SCAN GENERATOR scalrör FUNCTIONA€rf FUNCTIONB\cc + c5v V vü c J ? SaMPLE RATE 'r o POLARITY\9c RANGESsJ RANGEC\t/J RANGE A üJ oVERLoAD Vc f| - * Ü -- I I SCAN DECODER frE UZ oo CEP f---'-;;--l I I ;--------_.i; 7 r-----:::----.1 ,, I | cET 01 cp Q2 Ps 03 P1 P? c2 o.47 SYNCHRONOUS 4.BIT COUNTER R2 roo P O L A R I T YD I S P L A Y ENABLE FB I r+ -RAl | ^ t I : F r o D S tr H R uo s 6 , Tl-: I T..
PAGE 232
____{vl]l_+sv NOTES. t. rF-otsplAy ctvEs oDD READTNGS,CHECK DISPLAYFOR GOODCONNECTION IN'SOCKETS AND CHECKFOR SOLDERBRIDGESEETWEENPINS. ----1"' l r r - __r1r-q'l_L - - l-- ---{io"*F 4:1-:l- = v E -i.. F - = !2 E Bl + ls v (TOP VIEW) A V A I L A B L EO N S P E C I A LO R D E R +5V a t a a a l a a a a a l l l a a a t l l a a a l a a l t l t t t a l I t l a l l +5V 1".,,1,,,. Y, +, l-"1"" t t l*'l" "ö l rö 1 l " ra FE FA FB 10 Figwe 7-27. SchematicDiagram,Display, A3.
PAGE 233
ta a a a a a a a a a a a a 6FY GRr OFG Vp | o o a a ++++++ o o A5 hp Port No. 0349o-66505 C O M P O N E NS TI D E ^ Y 9 G = E u o o o o o > o YELO ti\.- BLUO c l rrHTo I OBRN t 2 t 4 5 6 ? 8 9 r O i l 1 2 1 3 1 4 a a a a a a a o a o a o o a -aö ---. t| |T | : r l i i r t i--a i| Tr ;! r !---tö; i ; r i l : i l i i i l l I iTT | r r l l l l i i A5 hp Port No. 0349O-66505 C I R C U I TS I D E OREO .
PAGE 234
*"-r.t tE-oro-u*oi M A | N C T R C U TATS S E M E L Y( 0 3 4 9 0 - 6 6 5 0 t ) ffiJ-*orie-r*E a H(HFFA) [-rurucrroru .1 Z rslrqr'l 6o R A, rt t t - 'i\-X-!-l i'ii oG ]-- l l_rur.r,o*rr,rro,_$;11*|3 t - n q N a e ^ r , *I .l ,* ' il ,, I H'**'iL ,E;:ll:;'l RANGE [-.o*0..",r*.,j# ^".^.r" 'ä;glYr ---$P RArE a HtHssar l-saucr-e 7 r o o , u . o ]s a M p LREA T E B( H s s B ) i I l * | - cH,rrr., ''t''fl*l* l-ro"r..RArE J {-#'-d.ir'l .i ,.*.ol"o.o.
PAGE 235
r -:r A S S E M B L (YO 3 4 9 O - 6 6 5 0 5 ) ,l lFUNcroNl ;UNCTIONBIT FUNCTION 8 A L H AC H L 0c L L TEST H H I =HIGH.+4.OV OR GREATER O = L O w . OT O + O . 5 V l- fl lFaN6E-l s4 Ft tcTtoN s3 (SHOWNWITHAUTO SELECTEO) /A /-\' RANGE o . rv ( K o ) . tv (Ko) r o v( K o ) roov(Ko) rooov(Ko) r 0 . 0 0 0K n f -\1, o4 RANGEBII C B A H H L H L H H L L L H H L H L L L H l I (VIEWEOFROMLEFT) l=HIGH= +4.OV ORGREATER o=Low=o To +o.
PAGE 236
eJ e : t ll l : llpl al a +F ? ? lUl l t-t f FHI K J t l t t , = t"l T-T l I l c l - l l | t l | R41_l---c25-- tjfi , I F -.; | - a__=!83-r '*' '' -J lul ,F__- =sÄl-[--lt-i-] '/ | Y:ff' ,- @-: ! lRl rc?zI i t'l | [J ^9 l ' l * B|--- . 1P2 $ütE@ü$$ ftf$l$lr?q +iElEl+ il++ | lu6D r t t ' M ,\ @@ -'.." l l l toTl l-_l;l-l Y3 g I ( o s )| I Y I t-t | - lfl- |t l ***re4***l l,lu t " l ;l6t -ct- Qj,J rPt r r t o r o r f - l , , , .
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[A6T* .*""; tI ;r*.*' *;-..u*, ,T ",,-[- ATTENUATOR NOTE 3 lOpF llNPUil HIGH (LAC I ) I Rtl 6.O4K AIJz Ac lN ENABLE t- ---|(h 2.4-24.5 pF I ( toov ?' ( H I R C I R A N G E C X 1 , , | \'TO At U2il F ADJ toov xo.ol r*_T_ V, ^cK+ "'"1 -t7v - HF ADJ TEN +tzv ---f(re (r l +5v --+
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ASSEMELY(O349O-66505) AC CONVERTER AMPLIFIER CONVERTER +r7v 7 .ozK R8 4.OzK Rlo 301 R9 301 ct3 ATTENUATOR t2.tv ct8 ^r K? o.o| i DC FEEOBACK Rrl 5.O4K I \/' ' ct4 o.ol +5V -t7v toov LF ADJ -t7v R17 20. oK FEEOBACK +5V 3 cR9 5.llV ct6 o.a2 CRtl cRro 5 . rr v - +l?v IV LF - +5V 1l XI 6AIN 111.i?V XO.I GAIN RANGE ti v ?, RIGST 1972 BY HEVTLETT.PACTAROCOMPANY tov toov RANGE BII c H n L L L n H R E L A Y S A T T E N AMP T O T A L GAIN GAIN CLOSED I XI o . l o. I K2,K4 x l o.
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vtEwEo FROM ToP '.@J'"@i":@ @^ 3Rr3 l. v R2 ?6.7K -8.3V 'r---\- -7- ov c2l ON IV RANGL V ,---t 55 TPI ov c23 68 3.5V P AT IV RMS ON lv RANGET FILTER R44 4t].7 K R25 3.OlK +r7v 9l nc corvepreR ourPUT1 TO A2 V o.82 + t7v NOTE 6 C/ LF t R43 t5.4K NOTES' l . l F l o O V , 2 O H rl S o U TO F S P E C , C H E C lK. 2. lF IOoOVloov AT IOKH!lS oUT OF SPEo, CHECKC2. 3. lF lV, IOKHZlS H|GH,CttECKC3. 4. CHECKLI.4 FOR PROPERSEATON BOARD. IF REEDIS SUSPECTED. TAKEOFFAND WINDINGFOR 2OO.3OOOHMS.
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f, ^au l-O999-06t90'oNlrodofq LV uoll3as palpueHuea|c 'paceldat eq uq) pJeoq lo epls s!ql sluauoduioc 3 ^au 20999-O6t9O'oNuod drl LV @*++++++iei+ot o T , ' l =,?"@.
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i --c 3! _ N 3 H , $3 - r o r { v HN V : n C ' 3 A u 9 3 J 3 C f u v s _ t r lo ^rvdo3 ouvlSvd -ulil3j so3fu Jl., L.oN lstr Nt o3so_]c 3UV 'x oNv tx .e ,1O_l OI offCfNNO3 AO-t 1VN9|S ü Hl.l^t ,f\O-] _ rtfds3u _IndNt :H.!,r\ o3ansvln r|n38t3'täiili ölövriön .z ,ooo'ot 1d33X3SI9NVU-l-lv :r. v/ol v'ol vu I vu I vul 3S:.:v S1-lO^ 1Nf8Un3 rNSnfunsv3lrl u>1 €t €t Z>1 zr zv No ofso-]3 9X.l s310N 1 uyooo'ol ' l - Hl o y oool ' l H nxool olol üyl ült.
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0vLl6s-L 'rV 'relJo^uoJ .gE-1arn8rg surq6'urur8erq crlerueqcs 8t .
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l;U r--r GNO a @ o @@ I a oI -l g 14 l-u' l 7 I t . l I I s l r l i J ü ? ; ? T I T T T T T ? 9f| I E = E , t F N o l l @ f| I| t c r a o a a a o t4 lt I 429 hp porf N o . l l l l S - 2 6 5 0 1 Rev. A Ul,U2 A22Al A22Al hp PortNo.o349o-66522 3490A-A-5002 422A2 42242 hp pott No.03490-66523 422 hp PortNo.
PAGE 244
1M1 aSSEMBLY 3äY'ä'^i äT?"lTl'-?'.1.'.i" (LEXE)4EITERNALENCOoE 7 Z'"'+.gntl,"*LS-* ! .sv--<+{lk,l rsv < !ri I Il A N vr--{*g+
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,;;,..* '., t;;:'l,:,;t;;1 .::..:.1!;i;:l -":; SAMPLE/HOLD TRIGGERGATE ASSEMBLY oPTroN O45 fiilt8-665021 : ,ij; I I .;;i (LEXE)4EXTERNAL ENCOOE 7 ..:! ;.1', ( LHLD) ' HOLD L: MAIN .D TRIGGER ASSY. SAMPLE / HOLD TRIGGERC IRCUIT (LEXE) EXTERNAL. ENCOOE LTO MAIN LOGIC U24il3) , ;''il '. ';,1 ' , r : lr , : I I ' l " l ? ' SAMPLE/I{OLD TRIGGER L -^ lö - - s / H T R T G G ETRO s/H LOGTC ASSEMBLY< 4 2 8 ( O p T t O NO 4 0 ) | - \ -Y COPYRIGHT 1 9 7 2 g Y H E W L € T T .
PAGE 246
t --+f-!-l-trü" | l ourcuaRo | üoGRouND H O L OL P I N4 7 EXTERNAL L ENCODE PIN 46 HOLD L PIN 29 EXTERNAL ENCOOEL ro ooroorrr' I coNNEcroR J6 J |ro *."or. ,*r* coNNEcroR J7 l " : " " ' " ü " ! r____+ PtN 7.il.t2 -,J S A M P L E/ H O L D T R I G G E RC I R C U I T 22K OPTION +5V1 +svr o40 S T R E T C HDE P U L S EO U T P U T PIN IO c4 o.
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I E E 'l rrEir f l ' " 1 ' l. |t ,r l-----T = ;, 6 !-------r 9 *J l l l , ' l ;i j Älll l?i, ;eEc I t [ u- ; - -' - l l I ur ll ue :--------? r-----------" I I | t ||| | 000000000000000 ' A 9 F iri hp Pott No.o349o-66509 a a + l u 8 T. .; 6 r I ,u | :..i a --Elq-826--F!9-829-R3o- ? 5 l l € ß u r 6 t_ ,,3 -R27-RZZ-R2r-R2B-Rzg- 4 l . -l t -Ril-R6-Rt3-R5-RJ- l u 8 6 -R3z-R3i-Rz3-Rt2-R4- t l-ur-l t z l 4 a /::\ (4r.
PAGE 248
___ INGUARD D A T A O U T P U TA S S E M B L YO P T I O NO 2 I ( O 3 4 9 O - 6 5 5 0 9 ) J8 I \- a To u6(3) f a ro usol sf T ,o.o",r, J 8 (xopp) crovr-tovERLoAD H---< l(HrRA) RANGE o , --f1 Z .
PAGE 249
, . , . - . . . : . i .- . . I e T' r N_-n c - j , , s - $ *. *q E f F+ larsl$l^1.iil -(o3aso-60306) I DATAMULTIPLEXERS Ia sERraLDAra | rnou tlspray I ö GIJARD I I larsaz lqrsar I ; INGUARo I O U T G U A R :D | { o 3 4 9 0 - 6 6 5 r 5: )( 0 3 4 9 0 - 6 6 5 1 6 ) l ,,I Ä [; OVERLOADH NC roe roc roo Ira lre Irc Iro . LOGTC FREQUENCY DOUBLER CLOCK DELAY c3 o.
PAGE 250
E G 9 \ ' I C E F N I A N ri fr. F i t : -- our ass'Y (01490-665tO) J T G U A RP DO W E RS U P P L YA S S ' Y 5 4 9 0- 5 6 5 0 8 ) r' < " ',., t F R O I O U r c u a R D P o w E RS U P F L Y +5vr _r--) 2 ,:,)+. I ft2' -'Low V. S H I F TR E G I S T E R S (25) HIGH REF ^'^'. OUTGUARO^ GROUND (t2,36,37,39, 4 2 , 4 3 ,5 0 ) l t24l '5%trst PA^IAF -\rJ' ^ | 22@11;y ,4rgr l t +5VI zfti-trorl ,">]-tL tu "f .! "l ,r, I , u ,! t ro#1a1 | .#,.,-J ,,,".'" .,"l,.
PAGE 251
&Y g h I G "]--*^--.'en' * A N E i s E R v I j:-E M A N ( o 3 4 9 0- 6 0 3 0 6 ) GUARO ar5A2 | O U T G U A R O: (o3490-665r6)l HIGH LOW S H I F TR E G I S T E R S a^ Qc ac oe 0_ +5vr---1i1+;4 QG ,-gj-l I R5Fl 6.
PAGE 252
O U T G U A R DP O W E R S U P P L Y A S S ' Y (o3490 - 6650S) +' 5- '\ / r. F R O T VO U T G T J A R D POWERSUPPLY +svrt'2 ,:)+. I fr2' V. | ,,r,.r, .,, ur, 4 2 , 4 3 ,5 0 ) I | (t6) zfu*-rrot I .o>i---qo .l *;| ,rr I "l 1 5 1f z J ,r, J 83 ,o+(4)l . >f--- a TO REARPANEL DATA OUTPUT CONNECTOR J6 ,' ^' -r { 3I ö , RANGE C - \ V" OUT \ \ ' 7--r48t DATA FLAG I 15 Figure 742. SchematicDagram, Data Output Option 021, 49. Al0. A15.
PAGE 253
A t l H t l hp Pott No.O349O-665t1 R e v .C 1 6 r 6 9 1 4 8 r- ,x--l * f--,t-l * 1 1 r,il t 1 , 7 4 8 7 l { 6 F;] t 7 ä----------jr-----q * ++JJ iu;i t r r t l - l I Al2 ,o.oo-"1.""" hp port tJo,03490-66512 FLAT SIDE OR coLoR 007 6r \ - / l t t rr rr. l l | | | N ro** l ; ; E o t l g q @ Tr'' \ - . / ,[:]" | 6 | /'\5 (:?' l*"1 i{ (o3) | | t ' ' a AITAI hp Port No. 03490-665t7 5490A-A- 5001 - At7A2 At7 hp Port No.
PAGE 254
| T N G U A RRDE M o T Ea s s E M B L yo p l o N o z 2 ( o 3 4 9 o - 6 6 5 t r ) A| | I l a I I A J7 J l t . r-T<. w +5V < w -A \ 'r v^ ,^ tu | I I l K / -( ff+sv I. Tr,, t-J r (HSC) SCAN C H __12 rO AtpZ (rZ) |\ I I (HSA)SCANAH ,,I ___\ s p 2 { t o ) ro At V (- scar,rn H i l c2 82OpF (HSCK)STATECLOCK___L/ r A e Toatu4(9) r\P LOCAL/ REMOTE FLIP- FLOP DTSPLAY AssEMBLy i I -f( .
PAGE 255
o \ A 9 U r t-- l- n ornv tt"-'ttl,t3 |rc:euvu -r'iöui x 1 LH v lgNvu ';- t l ; i : l A'r-__*5; l l ;- -'--Tilil'r^'. / ) , \-----l z t >_jj' r r=: lii I su31sr93u tl rHs )'.'t l ^g+ > 421 :- ^v'130 )13013 I c t 9 0 ' 1t v t l N l n o S s ;c: ri_ Q.rg99-06,90) ^,ssv ouvngNl l=_?fi,ii!E!g Bä ' ä- ,TY *-1-"v tfl* -.
PAGE 256
r i h l q Asffi *1--s'- sE,Rvt_- I AJtlil;o-'*il1".i'I ;;;;, GUARD rruouano ass'i'l oürnrono oss'.,I (o349o-66517) | (o349o-665t8) | U5 -FLOP AR 5V r500 LOCKDELAY 0.039 SHIFT EGISTERS \^o l/ +5VI I
PAGE 257
nBId fl ? JU T nA oq + oa 9NI|llvu90ud 3l,ot'l]u sStsvNS oNV stou-j-Nol tlNvd o 8 J S 3 l 8 V S t Ot O t S n O n N r l N O 9 f I u3x3-rdtI"lnn 0uvn9rno rns+---< I^S+ ( 8 r 9 9 9 - o 6 r c o| ) l,ssv ouvngmoI I I \ I ':-',:.
PAGE 258
9yLlsyL 'zz0 uorldo 9r . L I Y , Z I Y, I I Y lndul olotuo1'ruur8erq Jrleuor{cs'gg-1arn8rg ( o € ) 1 f 8 0 t c 3 N N o f , l n d N l ---r\ 3row3u t3NVd uvfa or s Jt I ? oNvntroc o A l ,"4 z+l - . - ^tddns ufMod o ouvn9-l-no or I I l + :! X^" E J | . IA9+ --+< IA9+ (.
PAGE 259
:::,r: :'.::. ;..':' a,:I.. t,,.. ,,'' :., ct2 l ffiru1ün :;::: TO A2 ir.;. :i:. L E XE ;i:: A B C D E F H J K L 427 hp i:,1, 1:j, Port No. 03490- 66527 Rev.
PAGE 260
f]-atr+;;"., I ^-**;;; A M P L IF I E R algR r/oo' , e F8fi8. SUPPLY -nv-f( < I I pro I l l---i r I ö r -'tu .+!:. +{, I I ps / L---;< L_t + * 14,0"'o*'%Ä'äuJJii .l 18F8#"Äi.* IF U8 IS BAD. OUTPUTWAVEFORMS WILL BE LOAOEODOWN. IHHOB) l8 PRbou%'u.
PAGE 261
)LO 27 ANAI"OG ASSEMSLY AMPLIFIER RESPONSE lloo', c a r { c * o lI R34 46.4 K ct6 IF U8 IS BAD.OUTPUTWAVEFORMS WILL 8E LOADEDDOWN.
PAGE 262
VIEWED _ '/ r, - rt\u .V' \ / 3 4 FROM TOP_ {u. u *t'" F V 7 i?? l9L'.i9i.?,J4 ? *to rrreenrroR { - OFFSET {ao't ^+ DrsaBLE3 +3too,ä119 17 Figure 7-34. SchematicDiagram,Sample/HoldAnalog Circuits,A27.
PAGE 263
-"--- |€l---__-_-__19 l u u l H" i-----,l l, t 6 9 ' 6 | - - - - - - - - - . | 9 l-l[l I ut4 A28 Porf No. O349O-66528 Rev. C I u" I' e | ,' I-'"f-;'.
PAGE 264
SAMPLE/ HOLD (o3490 - 66528) LOGIC I ori",., (LTONI " ,' F<-(iäo*,j.,]lj!,j, ö1,*.-< 7'.'F$; - 6 STATE CLOCK TURN ON J5 + 5V | ..* SAMPLE/H3OL0 CLOCK (H s/ TC t t l l v Y, .sv S A M P L E /H O L D T R I G G E R C I R C U I T S {i6(---1-*sv rcz I +5V cRl + R3 5.6 K tlu B.%* (HEHE) SAMPLE/IOLDTRIGGER FROM AgTl , A29Tl or A3lTl ( HrHCI INTERNAL I|oLD COMMANOH TO Ur503) -,ru+v <_ (LtsH) rNHrP.
PAGE 265
/ HOLD LOGIC - 66528) CTATF CLOCK TURN ON ]N) TURN ON u 3 ( r , r 3 ) ,u 4 ( 9 ) ut6 2t4 !!Bs-u | couN , S A M P L E /H O L D T R I G G E R C I RC U I T S + +5V E 5 5.6 K R8 5.
PAGE 266
STATE STORAGE DELAY M U L T IP L E XE R I5V LTON H O S EH D S A L€< IIOLD A H TOU2(6), A27 .sv utl LEVEL 17 T R A NS LATOR -fou FROM UgO R9 (6) t7K TO ROM ut4 +5v -..
PAGE 267
fI jil ;l r'" : i _ ä t" j TableT-7. AlphabeticalListingof 349OAGplB l/O Mnemonics. :l ".., .:a. :::;: AAA AAB AAC AAD AAE ADT AOH ATR AUT CDS CLK CRA CRB cRc cRs ;ä *,'$ ".ä _;3 1ä ,..
PAGE 268
OUTGUARD TO INGUARO DATA STATE CLOCK LOCAL/REMOTE SELECTION I6 LINE TO I LINE MULTIPLEXEF REMOTE ANNUNCIATOA DRIVE AEMOTE SELECT TO SAMPLE/HOLO EXTEBNAL TRIGGEF ENABLETOg9O LOGIC + INHIBITSAMPLE/HOLO, TO S/H LOGIC
PAGE 269
'.. ' OUTGUANO TO INGUAAO DATA STATE CL@K RESET LOCAL/REMOTE $ECTION SLECTtOil GUARO TRANSFER RECEIVE I ouo"o r"^n".
PAGE 270
CONTROL LINES G P I EA U S @NTROL LINES L. TD IRANSFE R f=w SY$EM CL@K LISTEN,TALK ADDRE$ SELECTION FC COMPANY Figure7-36. BlockDiagram ,3490A GPIBVO Circuits.
PAGE 271
O+5 FI E OGND I ililililililnil11 434 hp Port N o . O 3 4 9 O - 6 6 5 3 4 R e v .A l24-----r3-l I l, ut I L l' ,rl kt trlE 436 hp Porr N 0 .
PAGE 272
;>- li rol98rfii'lV 9io"rr(orurr Ol Br sl ' (9)8flv o1 \ i o r ) g n t vo r n)---t(IftU'l) 1 I3313S 31Oft3U 'l lv"llo H/s (oHsx I I 'r frvueoud xzs tansrt8l A9+ A9+ - {}}9ror x v norrclnrtvrul fet'ot le2 (SJHU { € NOU.]NnJ -(J)8r Or s NorroNnr rerrnrlH-.3J.rl!f5 v NorroNnr rvrrxrJrfillj il o > - i - H v 3 e N v(uv 8 c H ) l '. I lrznrvor i>its3eNvuteucx)fZ .+ H c : c r . r v{uc u c x } J t.
PAGE 273
I i sosr I s ^ o t, z v 83x3'ldlr'ln$l s 9l 0 3 23 ll39Q € L t --)r,H f .
PAGE 274
F^%ä!sJ.o!$"u"' I o,raI ',tuf,r 3+r7v -tzv--L{e -rzv f .
PAGE 275
@UNTER A FROMAIUI V [ +5v +5v +5V +5V l, .nn f TO ROM INPUTS(U5) ,o '',. -!s]!r;. _tgts) ";_|_ r_oro | HArR >,o>'i- narn ] iqs)'>JHorc I rota >z ;{- ro't I L_!ela)., >_l__xora 20 [?,il9Bäloo'o* us READ oNLY MS,|ORY .*Jil e rcrn f )-.1-+5v 7 0 I I I I 2 I iC HPSB ro f HPSA xooo I I I )!xooc AIJS ExrERtrlaL ;" \IJLEXE) , TRIGGERENABLEL i I INHIBIT ,' -" \ L ( L I S H ) / SAMPLE/HOLD L __J13 7 t8 )_l_r_soo ,-^st--)l ;-l--.r.
PAGE 276
$i$ F@+p+F%o ' E E l l tu' ro'_ro*++++++++ _l l l t " ' I ur-l 430 hp Port No. 03490-66530 lf an optical isolatoris to be replaced,see Section Vlll, Backdating,ChangeNo. 9 table to determine correct part number. ul -u11 CATHOOE ;3f? 'S?o 'ti. 'lä?fr?ox?E'i6q*1Eefi'&x?ot'tr'n .? +++lr++ ++ +++ ++ ++ ++ ocND [:J @ @@@ @ + 435 hp Port No.03490-66535 Rev.
PAGE 277
| ^ "ETGpr I -rl?ul'F5-ß-olqrroil Ä's-- (03490-66535, I r l rt *uu +sv ..r'-l ^l I i t I +5V R8 6.8K + R9 6.8K A + 5 VI n r zA HIOA +5vr HGTR a ä33 +5V ::: ^\ +5V 4.7K R2 ,A.
PAGE 278
R28 /A, 1500 B Ht o c A '$'"' +5Vl Rl3 Ä\ 220 4 HIOA R25 tsoo "Ä\ HODE T OJ t ( 9 ) HOEN FROM JI (16) t-oEo FROMJI(I3) lre A !ä3a HOIM F R O MJ I ( T ) ,gLA HPSH FROM JI (P) t3 H DI O 2 R I 9 A 22O a Rt4 6.8X 3 H O | OI II HRMT H ET R rROM JI (F) R r 8a 220 4 Rr7 /d 220 ö HRsr o R3O,6. RI7 A t500 i3 R2r Ä. 220 4 R 5 A . l5OO a Hr.
PAGE 279
|? TO OUTGUARO M O T H E RE O A R D 4 Z L0to2 9 LDIOI I ?l fllff^",'Jg*" E5 A B C O E7 2 lnnF +iö-ritsr Ez g1 EO E4 R23 + svi u4 MULTIPLEXER W I .o or.nroro orrl assv f Etz Erl L RF O 2l E9 _-?'u :iaM Jr(T) ,: *xN _ ECM JI(P) ' 3 -:r03 7 t7 = 1 . , J 1( F ) z -..ri r : : M J r0 5 ) . + 5Vl RI I X l + t t T k r + 5 VI R2 K )-i R3 6 . 4K I " fbÄiÄÄ;;;"- 2| xaorJ I I I HETRI !HL c , orR F R O M o U T G U A R o üöllin" eölÄo" \! - I H O E N\ H O t Mi I.,PSH. ---.
PAGE 280
l t 1l ll I - zvo l--------r-s-l l-ll | " l' - :l i 3 l J l l u 3 t4 - Ri------l 432 @ ;3 i' l l ,' ' l |+ T| t +o öFo"F lt -lf T"T l i j { ffi ffi iäl z l u 4 'zl r_". J P E r - lt I o.!----l3_-_Jr]It | | | t_L^r.sl-------l -ä 'Tl l O+rzv hp porr No. 03490-66532 RevA r.l LJ n l u eI LJ ililtf ililtf ill No.
PAGE 281
ASSEMELY -Ässi. U T G U A- R D Ö^ TO GPIB O ZU rsor-ÄrröH HAor r.1TO GPIB OUTGUARD 4vtsoLATtoN AssY. HRFD 1X 'LG 'TO OUIGUARO MOTI.I€REOARO HRFD J t Ii I lrrx HMRO T OJ 2 i('<--= r-oos---L{rs(-: 20A%ll?i8*o1lg9lRo r-oosl xreo rnou I <-- HAoHJ J L xrpo -.4{,. <-- -l
PAGE 282
I zz.ggx3!.3' i'ä.,! {fi :{ ) oa I r o o o o r-r J t3 3XhlH I \ za - I I I I nvor (oz ooorf o zz l:Y38 U3HIOIJ :3:^91nO r,tOUl evvn{ s cvvHl< c ovwf o rvvH+
PAGE 283
c8v)3vd-1r3lM:H ^8 t--- s 2Z6l lHgrUldOl -, ouvos,rr.,-onltt"l1 t <,6ouvn9rnonoul\;uvlrJ< r, rqxi / : --- a \- , lssv Nollvtost ^? o8vnt-Lno €td9 0l vo ^)r Ll,cH sX nros Fru:ox '>- ^voH 08vo8 u3H10n 08vn9rno or zz €vvH< e (-- cvvH< r<-- zz : 0 8 v o s u 3 H 1 0 w ovvH< <-- 08vn0Lno iloul fvvH+<; -- oz \-' / \_ '/ / onoH - .-lzl)€n or ossH - - l1O1 :- l.
PAGE 284
8L-LILL-L . tty, Zty .selquressy 1,qgg pupetr?C pren31n6,urur8erq rrtr?uoqcs.6E_1ern8rg l 7 > v T v s d H- - < t^^ oz.,J,irYJg il'r-%"] ::': - I " " -\ - - odvos ,rr-,0^ l-tao" 6O c 8 v n 9 - r noor 5 . ^ . . -{i 1 'so" , -i{ I osar ' J>dF----\ I v OZ.Ä..31.J?il!.oosl-',sa" ]1-.., ,,l o I I I ( ' r )z f r € v _ , . . (-( e) Z fl g v_ a z z i_ r rroH t.röH HsdH I 9n esdHI rsdH. i € r r Iu :SdH. r/'{our asdH.
PAGE 285
'1. ,f 6 !5) 4 Wtl I oL] o -cR3- o -cR5- ''' ,Jl o E -c8 -CR4-R3 -" -c4-c6-R13- -c3 -co- J2 J3 tT----l f--.-f ä= | " I I'o | :plr:*i'l;il* -A;.:'li il 3:LrKo @ t- o : ' i l 14 - Rlo-Rll-cR6- @ J A3I hp Port No.oi49o-6653t RevA I | FF? ; : .
PAGE 286
^Nvdr/'tof, ouvvcvd-Il3"lr\3H^€ €16t r I I 0^ o to.o4P z . z orq* I ,,^,0,."o,, ^ -i- . l rAq+ ""* ^9?'+ wou' b + | s€ ,) €-r- rvvr-l 0 s 3 t - r d d n su 3 / v \ 0 d0 3 r v - l o s l (--+-ovvx I ^ s s vv r v o tz F +lvvH louvn9rnool s , I 5--1-'oo' ' v (r---r- vvvH J I l/r U3dY{nf \9rs u399r8f ot, sfsnJ3u ^'rrvNU3.l_x3 J3Wn81SN lrt I ,s3roN ^ssv Notlv'lost t\2 UI3l{ Ouvngam gtao Ot -. eI t99rur)v H/s tf r9v )9rul- -111 o3-'l.tv.
PAGE 287
GUAROMOTHERBOARD . 90 - 6 5 5 3 | L E T F E X T E R N A L T R I G G E RF L A G GP I B CONNECTOR VIEWED FROM OUTSIDE REAR PANEL SAMPLE/HOLD TRIGGER +5Vr ä' TRIGGER CONNECTOR Jtl VIEWED FROMOUTSIDE REARPANEL NOrE I JUMPERREMOVEDANO TRANSFORMER ADDEO IF S/H OPTION INSTALLED S/H TTL TRIGGER tr 4iaa:' a ,:1 ' :.1t..:. S/H AC TRIGGER TN ü +5Vl tr NOTES' L IF INSTRUMENT IS BEINGPROGRAMMED EXTERNALLYRY GPIB SYSTEM ANO REFUSESTO SAMPLEVIA EXTERNAL TRIGGERSIGNAL.
PAGE 288
08-Ll6L-L ' I ' V 'prBog reqlot{ pr?n8lno'rue€e1qcrleruoqcs'671 arn8rg zz srze-r-oeozosre 0uvn91nostdg or Ortr OZ ^ssv Nou.vlost f ffi ,42.9 8U l l n oz^ssv No'v"losrouvnerno.,.0 o.,.{ :ott-l_ cvon-j) e ''''to) a r ,oo, lZ ^ssv vtv0 ouvncrnonorr{ orrrf , ouvnernoeracor orur ztisv>^ OZ ^ssv Norrv'rosr ouvn9rno nouJAvoH-+.J I lZ lssv wOU ouvngrnosrdg y{ourrooHI--} e OZ^ssv Nou.vrosr f^ssv vLvo ouvngrnoor nvor_Joz E4 i lrssv vrvo ouvngtno01 N3uH-1) I N stdg or rotdH-+J n OZ ^ssv Nolfvloslouvn9].no .
PAGE 289
I-8 I0zo0z8Iol Inzv eSuBqJ A\8/r ob I ö)t 0I UIUpxJid.'zttuLsLo '8Iuzv ppv ^\ 8/I %|ö urupxJ:u '€ltürsro 'tldzv ppY z6€, gd pxJ:J'zztyosto'rJzyppv oooz I-9 sIqBI pu? SS900VIIZI 'ou puas rog) S 'ON SCNV", (ro^/r\ol V ,0s.g09JIV elelec g7-1arnErguur8erq cq?ruoqcsprrBI-9 olqel '(relttotpue 'ou puesrog) 'ON 08I00VI IZI Z ACNV"C V 010I '6U8Ve8ueq3 ö{ Z'8'IZZB+99O CrtSI0'0't6Ig.09I0 ol SJ3Ve8uuq3 pue I-9 elqel 1g-1arn81g ö OZZ7'tStE.
PAGE 290
:3ur/rwrpuorlecol 'Z-8 luouodruoJ Suurrollog eql esn aJngrdur crleuaqcs I IV oql olnlr5qns 'g 'rrag 11y Sqluq sluerunJlsrn esoql uJ gg-1 arn8rg '9gq qSnorql ZSG se reuu?ru oruesor{1 ul ISC 01 soull Q puE J'Y llg etec lseuuoJ'uollceuuoc lndur apo4 p1o11 'lrncrrc Euquelg /oldurug oqt aleloq p1o11i elduug er{l q}1lrr pelercosse 3gu ololec ?n Jo suorlsoso/ht or{l pu? OIn 77-2 antug eu11.
PAGE 291
t-8 t' rJ0091 l0'ö ztn t0'ü ztv I u 0091 L'öOZZ t0'ü 6'06 t'öozz z0r(>066t 10'ö 6'06 2906-0809 Lr'9-tu 9 t - z r u 9e999-o6180 8Z-VZE 0 e - t z - z l u 0t999-o6t€o srols!seu preo8 3d 'oN 'r0,l pue o'l ggllovllz! 'tr 'uorleco-l tuauodruoC' 1-garnbr3 leyas 1y ßquJnN lred rolelosl le3lrdo ltg99-o6'eo :elq4 SrrA\olloJärI1qtl^\ ecuBpJoccsurou u?d rolBlosr prrldo eSwqJ 'ou il?d 6'06 }}VhLSLO oN riod dv ilv U ol gl-zlus€v pu? 0E 'Iz-llu0tv oEwqJ 'nlvo-LsLo 'oulIsd ?JZtrorrI's-tus€v puBSz-'zu0tveSu
PAGE 292
'.|a^o'l puegglLoV![Z!'oN pl.res'^lquassv clpuaqcs '7-garnorg LLV'rueroerg T\ 4\.4\ /]\ t t t t t t t l 78 .1\ ,n t l t l iiää ii z > L_.."rJ \/ d 9 ä 3 3 3 d ä ä ä :_ r :t 9 2 {äää iFi. 3Eää i Pi' r o c m z I 5 o d -ti ----i ^ ; .
PAGE 293
IV 0L6I ÄJ3nu"f pat"o I-tH sluaualddns {ooqpü"H :uoJd 0l6l 'Ä 'lEJ 'Irrd . .. 'SIIEJ . .socuoJ u r ö p l r g ?J"8€rN 6896I ' I ? N 'f'N 'atu"Jo C'/{alalrag...... . . uosrpg-a"JCcW Jo.^rO lsal\ 'IEJ'soIaSuVso.J ... .salJlsnpul uoslpa .V s"uoql 0096I 'fN'oJoqJalal .. ^rclorluoc uorl€5r^"Nr'dJoJ xlpuag aql 9Ie6I 'srt\'aa{n"alrt^I T .... .oJ.8JWlu"Jn( 1168I ' I a O r u o l . ä u l u l l A \' . . . c r 4 , ' o C p w luodn0 .I.S 0l,8BI '"d 'uJa^I"!{ .cq sluaunJlsul,t"q"trf Ziggi 'ss?II 'uolaaN' ' . .
PAGE 294
ZY 016I ÄJ"nu"f p"t"c l-'H : uorJ sluaqaldd\g looqpu"H qaN r"I"lle3o ^rq Jotrr"d"J /rlUJ IIt'g 'lrJ 'ocsrru"Jd urs tul "oJ JauasalS l v 96tt8 '^ 'IcoN cul scluorlJal3 orJV lsaJC N ItIü8 'f '!po.I ' 'o3 orp"u N D lsul l"crlneorav 296f8 'oy{ 'snlsal oC s8;nJJS pfo.
PAGE 295
ot6l fEnu"t palec l-tlt sluauetddqs looqpuEH :uoJJ €V 016l .,tq{ 'r"r.sara'uvsor. ........ocqrrus.x-s Är(x' :[3:;::#ä..:;,";il";"f"'?#r",$AJ,ff333 ---'-' 'qrl 'ItC 'uoliurlJng ' ' 'I€c'pu"plBo urata"g "IurorlIEC A/6000 ''uorrioc b!00o lcltrruH 'IEC'{Jed,{JnqaaN op"roloJ ,säulrqg opzroloC .;.-,nfgJaufiäJ opBroloc ..oc prylcud-palaag srarnp"Jnu"I{ roJ apoC ÄIddns t"rapal aql ol luaualdds 196,66 21666 t0666 02666 Sm6a 00g66 ,,01,66 g1q66 01966 eI866 60166 'droC qJeesaU cluorlcalg g16g6 'l'N.
PAGE 296
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