SERVICE MANUAL HP 16532A 1 GSa/s Digitizing Oscilloscope COPYRIGHT HEWLETT-PACKARD COMPANY, COLORADO SPRINGS DIVISION 1991-1993 1900 GARDEN OF THE GODS ROAD, COLORADO SPRINGS, COLORADO U.S.A. ALL RIGHTS RESERVED Manual Part No.
SAFETY CONSIDERATIONS GENERAL - This is a Safety Class I instrument (provided with terminal for protective earthing). • Do not install substitute parts or perform any unauthorized modification to the instrument. OPERATION - BEFORE APPLYING POWER verify that the power transformer primary is matched to the available line voltage, the correct fuse is installed, and Safety Precautions are taken (see the following warnings).
HP 16532A - Table of Contents CONTENTS SECTION I General Information 1-1. 1-2. 1-3. 1-4. 1-5. 1-6. 1-7. 1-8. 1-9. Introduction .............................................................................................................................. Module Covered by This Manual ............................................................................................ Safety Requirements ...............................................................................................................
HP 16532A - Table of Contents SECTION IV Calibration 4-1. 4-2. 4-3. 4-4. 4-5. 4-6. 4-7. 4-8. 4-9. 4-10. 4-11. 4-12. 4-13. 4-14. Introduction............................................................................................................................... 4-1 Safety Requirements ................................................................................................................ 4-1 Calibration Interval.................................................................................
HP 16532A - Table of Contents LIST OF TABLES TABLE TITLE PAGE 1-1. 1-2. 1-3. HP 16532A Specifications........................................................................................................ 1-3 HP 16532A Operating Characteristics..................................................................................... 1-4 Recommended Test Equipment .............................................................................................. 1-9 3-1. Performance Test Record ...............
TABLE OF CONTENTS General Information 1-1. 1-2. 1-3. 1-4. 1-5. 1-6. 1-7. 1-8. 1-9. Introduction...........................................................................................................................1-1 Module Covered by Manual .................................................................................................1-1 Safety Requirements.............................................................................................................1-1 Product Description............
HP 16532A - General Information SECTION I General Information 1-1. Introduction The service policy for this instrument is replacement of defective assemblies. This service guidel contains information for finding a defective assembly by testing and servicing the HP 16532A 1 GSa/s Oscilloscope Module. Also included in the guide are installation procedures and a list of recommended test equipment.
HP 16532A - General Information 1-4. Product Description • 24-pin IC test clip (HP 10211A) The HP 16532A Oscilloscope Module is a 1 GSa/s digitizing oscilloscope. Some of the main features are: • BNC-to-BNC ac coupling capacitor (HP 10240B) 10:1 Probe: • 1 GSa/s digitizing for 250 MHz bandwidth single shot analysis. • 8000 samples per channel.
HP 16532A - General Information Table 1-1. HP 16532A Specifications HP 16532A SPECIFICATIONS Type: 2-channel simultaneous acquisition Bandwidth(* ,1): dc to 250 MHz (real time, dc-coupled) Maximum Sample Rate: 1 Gigasample per second Number of Channels: 2, 4, 6, 8 simultaneous channels using the same time base setting(s) OR Up to 10 channels with independent time bases for each pair of channels. Up to 18 channels with the HP 16501A Expansion Frame. Rise Time(2): 1.
HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics HP 16532A OPERATING CHARACTERISTICS VERTICAL (at BNC) Vertical Sensitivity Range (1:1 Probe): 4 mV/div to 10 V/div in 1-2-4 increments DC Offset Range (1:1 Probe): Vertical Sensitivity 4 mV/div to 100 mV/div > 100 mV/div to 500 mV/div > 500 mV/div to 2.5 V/div > 2.
HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics (cont.) TRIGGERING Trigger Level Range: Within display window (full scale and offset) Trigger Modes: Immediate: Triggers immediately after arming condition is met. Edge: Triggers on rising or falling edge of any internal channel or external trigger, count adjustable from 1 to 32,000.
HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics (cont.) WAVEFORM DISPLAY Displayed Waveforms: Eight waveform windows maximum, with scrolling across 96 waveforms. Display Formats: Waveforms can be displayed in an overlapping and/or non-overlapping format. Display capability of A− B and A+ B is also provided. Display Resolution: 500 points horizontal, 240 points vertical DISPLAY MODES Normal (Single): New acquisition replaces old acquisition on screen.
HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics (cont.) MEASUREMENT AIDS Time Markers: Two vertical markers, X and O, are provided for measurements of time and voltage.
HP 16532A - General Information Table 1-2. HP 16532A Operating Characteristics (cont.) SETUP AIDS Autoscale: Autoscales the vertical and horizontal ranges, offset, and trigger level to display the input signals. Requires a frequency between 50 Hz and 250 MHz. Presets: Scales the vertical range, offset, and trigger level to predetermined values for displaying ECL or TTL waveforms. Calibration: Vertical, trigger, delay, and all defaults. Calibration factors stored in NV-RAM on the circuit board.
HP 16532A - General Information Table 1-3. Recommended Test Equipment EQUIPMENT CRITICAL SPECIFICATIONS RECOMMENDED MODEL HP 8656B Option 001 USE* P Signal Generator Frequency: 1 - 250 MHz at approx . 170 mV RMS resolution Output Accuracy: ± 1 dB 1 MHz time base accuracy 0.25 ppm Dc Power Supply Range: − 35.000 to + 35.000 Vdc, ± 1 mV HP 6114A P Digital Multimeter 0.1 mV resolution Accuracy: better than 0.005% Resistance measurement: better than 0.
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TABLE OF CONTENTS Installation 2-1. 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. 2-8. 2-9. 2-10. Introduction ......................................................................................................................... 2-1 Initial Inspection .................................................................................................................. 2-1 Preparation for Use .............................................................................................................
HP 16532A - Installation SECTION II Installation 2-1. Introduction 2-4. Power Requirements This section explains how to initially inspect the HP 16532A Oscilloscope Module, then how to prepare it for use, storage, and shipment. Also included are procedures for module installation. All power supplies required for operating the HP 16532A Oscilloscope Module are supplied to the module through the backplane connector in the mainframe. 2-2. Initial Inspection 2-5.
HP 16532A - Installation Module Installation (cont.) The effects of ELECTROSTATIC DISCHARGE can damage electronic components. Use grounded wrist straps and mats when you are performing any kind of service to this module. Installation Considerations • The HP 16532A Oscilloscope Modules can be installed in any available card slot. • For multiple modules connected as one unit, the master card must be placed in the slot above the expander cards.
HP 16532A - Installation 4. Slide the oscilloscope module into the card cage approximately halfway. 5. If you have more oscilloscope cards to install, slide them into the card cage approximately halfway. 6. Firmly seat the bottom card into the backplane connector. Keep applying pressure to the center of the card endplate while tightening the thumb screws finger tight. 7. Repeat step 6 for all cards and filler panels in a bottom-to-top order. See figure 2-2. 8.
HP 16532A - Installation 2-7. Operating Environment 2-9. Packaging The operating environment is listed in table 1-2 of Section I of this manual. Note should be made of the non-condensing humidity limitation. Condensation within the instrument can cause poor operation or malfunction. Protection should be provided against internal condensation. The following general instructions should be used for repacking the module with commercially available materials.
TABLE OF CONTENTS Performance Tests 3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. 3-10. 3-11. 3-12. 3-13. Introduction ......................................................................................................................... 3-1 Recommended Test Equipment ........................................................................................ 3-1 Test Record .........................................................................................................................
HP 16532A - Performance Tests SECTION III Performance Tests 3-1. Introduction The procedures in this section test the oscilloscope module’s electrical performance using the specifications listed in Section I as the performance standards. All tests can be performed without access to the interior of the instrument. At the end of this section is a form that can be used as a record of performance test results. 3-2. Recommended Test Equipment Equipment recommended for performance tests is listed in table 1-3.
HP 16532A - Performance Tests 3-6. DC CAL OUTPUT Test The DC CAL OUTPUT port on the rear panel is used for instrument calibration and probe calibration. Though calibrator accuracy is not specified in the performance specifications, it must be within limits in order to provide accurate calibration. Test Limits: 5.000 V ± 10 mV Equipment Required: The following equipment is required for the test. Equipment Required Recommended Model/Part Number Critical Specification Digital Multimeter 0.
HP 16532A - Performance Tests 3-7. AC CAL OUTPUT Test The AC CAL OUTPUT port on the rear panel is used for instrument calibration and probe compensation. Though calibrator accuracy is not specified in the performance specifications, it must be within limits in order to provide accurate calibration. Test Limits: 1000 Hz ± 10%, 0.8 Vp_p ± 10% Equipment Required: The following equipment is required for the test.
HP 16532A - Performance Tests 3-8. INPUT RESISTANCE This test verifies the input resistance of the oscilloscope module. A four-wire measurement is used for accuracy at 50 Ω. Specification: 1 M Ω ± 1% and 50 Ω ± 1% Equipment Required: The following equipment is required for the test. Procedures are based on the model or part numbers recommended. Equipment Required Recommended Model/Part Number Critical Specification Digital Multimeter Measure resistance (4-wire) better than 0.
HP 16532A - Performance Tests 4. Select RUN - SINGLE. The clicking of attenuator relays should be audible. Verify resistance readings on the digital multimeter of 50 Ω ± 0.5 Ω (49.5 to 50.5 Ω). 5. In the Channel menu change the Coupling field to 1 MΩ/DC. 6. Select RUN. The clicking of attenuator relays should be audible. Verify resistance readings on the digital multimeter of 1 MΩ ± 10 kΩ (0.990 to 1.010 MΩ). 7. In the Channel menu change the Coupling field to 50 Ω/DC and V/Div to 200 mV/Div.
HP 16532A - Performance Tests 3-9. VOLTAGE MEASUREMENT ACCURACY This test verifies the DC voltage measurement accuracy of the instrument. This procedure uses a dual cursor measurement that nullifies offset error, resulting in the following measurement: ± [(1.5% of full scale) + (0.016 x V/div)]. Specification: ± [(1.5% of full scale + offset accuracy) + (0.008 x V/div)] Equipment Required: The following equipment is required for this test. Procedures are based on the model or part numbers recommended.
HP 16532A - Performance Tests Procedure: 1. Using a BNC adapter, connect one end of the cable to the power supply. Connect the BNC tee, the blocking capacitor, and the shorting endcap to the other end of the cable. Refer to figure 3-1. Figure 3-1. Voltage Measurement Accuracy Test 2. In the Waveform Selection menu delete channel 2. If channel 1 is not inserted, insert channel 1. Set the following parameters in the order given.
HP 16532A - Performance Tests Use the following table for steps 3 through 9. V/Div 4 V/Div 1 V/Div 400 mV/Div 40 mV/Div 40 mV/Div 400 mV/Div 1 V/Div 4 V/Div Offset -7.0 V -1.75 V -700.0 mV -70.0 mV 70.0 mV 700.0 mV 1.75 V 7.0 V Supply -14.0 V -3.50 V -1.40 V -140.0 mV 140.0 mV 1.40 V 3.50 V 14.0 V Upper Limit -13.7 V -3.43 V -1.37 V -137.0 mV 143.0 mV 1.43 V 3.57 V 14.3 V Lower Limit -14.3 V -3.57 V -1.43 V -143.0 mV 137.0 mV 1.37 V 3.43 V 13.7 V 3.
HP 16532A - Performance Tests 3-10. OFFSET ACCURACY This test verifies the offset accuracy. Specification: ± (1.0% of channel offset + 2.0% of full scale) Equipment Required: The following equipment is required for the test. Procedures are based on the model or part numbers recommended. Equipment Required Recommended Model/Part Number Critical Specification DC Power Supply − 35.000 to + 35.000 Vdc, ± 1 mV resolution HP 6114A Digital Multimeter Better than 0.
HP 16532A - Performance Tests 3. Select RUN - REPETITIVE. Wait approximately 15 seconds (averaging complete), then select STOP. The display should read 0.00 V ± 320.0 mV as read from the markers voltage field. Record the reading in the performance test record. 4. In the Channel menu, change the vertical sensitivity to 1 V/Div. Select RUN - REPETITIVE and wait approximately 15 seconds (averaging complete), then select STOP. The display should read 0.00 V ± 80.0 mV.
HP 16532A - Performance Tests 3-11. BANDWIDTH This test checks the bandwidth of the oscilloscope module. Specification: Bandwidth (dc coupled) dc to 250 MHz Equipment Required: The following equipment is required for this test. Procedures are based on the model or part number recommended.
HP 16532A - Performance Tests 4. Set the signal generator for 1MHz at − 2.4 dBm. On the oscilloscope, select RUN - REPETITIVE. The signal on the screen should be two cycles at three divisions amplitude. 5. After the measurement settles (averaging complete, about 15 seconds), select STOP. In the Auto-Measure menu note the Vp-p reading. V1MHz = __________ mV. 6. Set the power meter Cal Factor % to the 1MHz value from the calibration chart on the power splitter. Then press dB[REF] to set a 0 dB reference. 7.
HP 16532A - Performance Tests 3-12. TIME MEASUREMENT ACCURACY This test uses a precise frequency source to check the accuracy of time measurement functions. Specification: ± [(0.005% x ∆t) + (2 x 10− 6 x delay setting) + 150 ps] Equipment Required: The following equipment is required for this test. Procedures are based on the model or part number recommended. Equipment Required Recommended Model/Part Number Critical Specification Signal Generator 200 MHz, timebase accuracy 0.25 ppm HP 8656B Opt.
HP 16532A - Performance Tests 4. Select the Markers Auto menu, and set the following parameters: Menu Markers Auto Selection Setting X→ Set on chan 1 at Level 50% Slope Positive Occur 1 O→ Set on chan 1 at Level 50% Slope Positive Occur 2 Statistics On 5. Select DONE. On the oscilloscope module select RUN - REPETITIVE. If the waveform is clipping, reduce the signal generator output voltage level until the waveform no longer clips.
HP 16532A - Performance Tests 3-13. TRIGGER SENSITIVITY This test checks channel triggers for sensitivity at rated bandwidth. Specification: dc to 50 MHz : 0.063 x full scale (0.25 division) 50 to 250 MHz : 0.125 x full scale (0.5 division) Equipment Required: The following equipment is required for this test. Procedures are based on the model or part number recommended.
HP 16532A - Performance Tests 3. Set the signal generator for a 50 MHz and 35 mV rms signal. On the oscilloscope module select RUN - REPETITIVE. 4. In the Auto-Measure menu read Vp_p . Adjust the signal generator output level so that the signal is close to and not more than 100 mVp_p . 5. In the Trigger menu adjust the trigger level for a stable display. The test passes if the trigger is stable. Record whether the trigger is stable or is not stable. 6. On the oscilloscope module select STOP.
HP 16532A - Performance Tests Table 3-1. Performance Test Record Hewlett-Packard Model 16532A Oscilloscope Module Serial No.: ____________________ Recommended Performance Verification Interval: 12 Months Paragraph No. Test Tested by ______________________________ Work Order No. _________________________ Date Tested ____________________________ Results 3-6 DC CAL OUTPUT 5.000Vdc ± 10mV Minimum 4.990Vdc 3-7 AC CAL OUTPUT 0.8Vp_p ± 10% 1000Hz ± 10% Minimum 0.72Vp_p Maximum 0.
HP 16532A - Performance Tests Table 3-1. Performance Test Record (Continued) Paragraph No. 3-9 3-10 Test Results Voltage Measurement Accuracy (continued) Upper Limit Lower Limit Channel 2 Zero Input Measured -13.7V -3.43V -1.37V -137.0mV 143.0mV 1.43V 3.57V 14.
HP 16532A - Performance Tests Table 3-1. Performance Test Record (Continued) Paragraph No. 3-12 3-13 Test Results Time Measurement Accuracy 5.500ns ± 150ps MEAN X-O __________ns MIN X-O __________ns MEAN X-O - MIN X-O = _________ps MAX X-O __________ns MAX X-O - MEAN X-O = _________ps 99.
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TABLE OF CONTENTS Calibration 4-1. 4-2. 4-3. 4-4. 4-5. 4-6. 4-7. 4-8. 4-9. 4-10. 4-11. 4-12. 4-13. 4-14. Introduction..........................................................................................................................4-1 Safety Requirements............................................................................................................4-1 Calibration Interval...............................................................................................................
HP 16532A - Calibration SECTION IV Calibration 4-1. Introduction This section provides information on calibrating the HP 16532A 1 GSa/s Oscilloscope module. Information is included about when to calibrate the module, the module warm up interval required prior to calibration, and how to do the actual calibration of the module. Also included are safety requirements to observe when working on the equipment, a list of recommended test equipment, and equipment setups for the different calibration procedures.
HP 16532A - Calibration To run the scope calibration, the switch must be in the UNPROTECT position. When you have more than one HP 16532A board in a mainframe, this must be done for each one of the boards. After calibration is complete, all the switches must be set to the PROTECT position to save the calibration values.
HP 16532A - Calibration 4-9. Setting the PROTECT/UNPROTECT Switch to UNPROTECT The effects of ELECTROSTATIC DISCHARGE can damage electronic components. Use grounded wrist straps and mats when you are performing any kind of service on this module. The oscilloscope board contains a calibration PROTECT/UNPROTECT switch. This switch must be set to UNPROTECT before calibration can be done. Set the switch to UNPROTECT as follows: 1. Remove power from the instrument.
HP 16532A - Calibration 4-10. Equipment Required for Calibration The equipment listed below is required for calibration: Cable (2) Cable Adapter Adapter 50Ω BNC, 9-inch (equal length) 50Ω BNC - SMB 50Ω BNC tee (m)(f)(f) 50Ω BNC (m)(m) HP 10502A HP 16532-61601 HP 1250-0781 HP 1250-1236 4-11. Loading the Default Calibration Factors Once the default calibration factors are loaded, all calibrations must be done. This includes all of the calibrations in the Self Cal menu.
HP 16532A - Calibration 4-12. Self Cal Menu Calibrations Note After you touch the Start field, you can abort the calibration procedure either by touching the Cancel field, if it is available in the menu, or by touching either the Mode or Procedure fields if the continue field is still displayed on the screen. Messages will be displayed as each calibration routine is completed to indicate calibration has passed or failed.
HP 16532A - Calibration 3. Touch the Channel field, then select S1 from the pop-up menu (where S is the slot letter where the oscilloscope module is installed in the mainframe). 4. Touch the Start field and follow the instructions on the display. 5. After completion of channel 1 delay calibration, remove the cable from the rear panel of the oscilloscope. 6. Repeat steps 3 through 5 for channel S2. 7.
HP 16532A - Calibration Calibrate the Ext Trig Null of the Self Cal menu as follows: 1. Connect the cables, BNC adapter, and BNC tee adapter together as shown in figure 4-4. Note When you touch Start, the instrument will prompt you to connect the cables to the appropriate locations on the rear panel of the module. Figure 4-4. Ext Trig Null Calibration Connections 2. Touch the Procedure field, then select Ext Trig Null from the pop-up menu. 3.
HP 16532A - Calibration Figure 4-5. End of Calibration Display 4-13. Setting the PROTECT/UNPROTECT Switch to PROTECT The effects of ELECTROSTATIC DISCHARGE can damage electronic components. Use grounded wrist straps and mats when you are performing any kind of service on this module. The PROTECT/UNPROTECT switch must be set to PROTECT after calibration is finished. Set the switch to PROTECT as follows: 1. Remove power from the instrument.
TABLE OF CONTENTS Replaceable Parts 5-1. 5-2. 5-3. 5-4. 5-5. 5-6. Introduction .......................................................................................................................... 5-1 Abbreviations ....................................................................................................................... 5-1 Replaceable Parts List ......................................................................................................... 5-1 Ordering Information .............
HP 16532A - Replaceable Parts SECTION V Replaceable Parts 5-1. Introduction The service policy for this instrument is replacement of defective assemblies. This service manual contains information for finding a defective assembly. This section contains parts and ordering information for the HP 16532A Oscilloscope Module. Table 5-1 lists the reference designator and abbreviations used throughout this manual. Table 5-2 lists all replaceable parts by reference designator. 5-2.
HP 16532A - Replaceable Parts Exchange assemblies are listed in a separate section in the replaceable parts table. They have a part number in the form XXXXX-695XX (where the new parts would be XXXXX-665XX). Before ordering an "exchange assembly," check with your local parts or repair organization for procedures. 5-6. Direct Mail Order System Within the USA, Hewlett-Packard can supply parts through direct mail order.
HP 16532A - Replaceable Parts Table 5-1. Reference Designator and Abbreviations REFERENCE DESIGNATOR A B BT C CR DL DS E = = = = = assembly fan;motor battery capacitor diode;diode thyristor; varactor = delay line = annunciator;lamp;LED = misc. electrical part F FL H J L MP P = = = = fuse filter hardware electrical connector (stationary portion);jack = coil;inductor = misc.
HP 16532A - Replaceable Parts Figure 5-1.
HP 16532A - Replaceable Parts Table 5-2.
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TABLE OF CONTENTS Service 6-1. 6-2. 6-3. 6-4. 6-5. 6-6. 6-7. 6-8. 6-9. 6-10. 6-11. Introduction ......................................................................................................................... 6-1 Safety Requirements ........................................................................................................... 6-1 Recommended Test Equipment ........................................................................................
HP 16532A - Service SECTION VI Service 6-1. Introduction 6-5. Attenuator Theory of Operation The service policy for this instrument is replacement of defective assemblies. This service manual contains information for finding a defective assembly. This section contains information for servicing the HP 16532A Oscilloscope Module. Included are a block level theory and procedures for self diagnostics and troubleshooting.
HP 16532A - Service Figure 6-1. HP 16532A Oscilloscope Block Diagram phase detector provide the sample clock for higher sample rates. After conditioning and sampling, the signals are digitized, then stored in a hybrid IC containing a FISO (fast in, slow out) memory. ADC. The eight-bit ADC digitizes the channel signal. Digitization is done by comparators in a flash converter. The sample clock latches the digitized value of the input to save it so that it can be sent to memory. 6-2 FISO Memory.
HP 16532A - Service Triggering. There are two main trigger circuits that trigger four trigger sources. The two trigger circuits are the analog trigger and the logic trigger. The analog trigger IC operates as a multichannel Schmidt trigger/comparator. A trigger signal (a copy of the analog input signal) from each of the inputs is directed to the analog trigger IC inputs. The trigger signal is continuously compared with the trigger reference level selected by the user.
HP 16532A - Service 6-7. Self-Tests The self-tests for the HP 16532A oscilloscope module will identify the improper operation of major functional areas in the module. They are not intended for component level diagnostics. If there are multiple oscilloscope modules, the user must select the specific oscilloscope module to be tested at the main test system menu. Multiple HP 16532A modules that are connected as one unit are recognized as a single unit in the test menu.
HP 16532A - Service 3. Install the Composite PV Test software disk in the inactive disk drive. 4. Touch the box labeled Touch box to Load Test System. See figure 6-3. Note When the self-test software is loaded, the user operating system is overwritten in the mainframe system RAM. Figure 6-3. Load Test System Screen 5. From the test system screen in figure 6-4, touch Test System, then touch 1 GSa/s SCOPE D. (For the example shown in figure 6-4, the oscilloscope module is in slot D.
HP 16532A - Service Figure 6-5 shows the selection menu for choosing to perform functional tests. The status of the functional tests is given. Figure 6-5. Functional Tests Screen 6. Touch the Functional Tests field. Figure 6-6 is the main self-test menu. Self-tests can be either run individually by touching a specific test field, or run automatically through all tests one time by touching the All Tests field.
HP 16532A - Service 7. Touch the A/D Test field. The individual test run screens, see figure 6-7, give the test name, a brief description of the test, number of test runs, and the number of test failures. Figure 6-7. A/D Test Run Screen 8. Touch Run, then drag your finger to Single or Repetitive. During the time a Single run or a Repetitive run is executing, the Run field displays Stop. 9. To stop a Repetitive run, touch Stop. See figure 6-8. Figure 6-8.
HP 16532A - Service 10. Touch Done to exit the A/D test. 11. To exit the self tests, touch the following fields in the lettered sequence below: a. b. c. d. 1GSa/s Scope Test System Configuration Exit Test 12. Touch the box that reads "Touch box to Exit Test System". See figure 6-9. Figure 6-9.
HP 16532A - Service Self-Test Descriptions The following self-tests check the major components of the HP 16532A oscilloscope module as well as all associated circuitry. When the self-tests have all been completed with a "PASS" status, the major data and control pipelines in the HP 16532A oscilloscope module are functioning properly. Data Memory Test This test verifies the correct operation of the FISO (fast-in/slow-out) data memory on each board.
HP 16532A - Service 6-8. Troubleshooting The troubleshooting flow chart given in figure 6-10 will isolate module failures to card level only. It is not intended for component level troubleshooting. If self-tests indicate a failure, begin at the Start of the troubleshooting flow chart. When a specific test fails, you will be instructed to replace a faulty card or you will be referred to other flow charts for the isolation of the faulty card or cable.
HP 16532A - Service Verifying the System Clock This procedure is provided as a troubleshooting aid to verify that the 100 MHz System Clock oscillator is functioning properly. The 100 MHz oscillator is the primary time reference used for all of the acquisition clock periods. The test limits provided are the test limits for the 100 MHz oscillator only. If the readings are outside of the test limits, the oscilloscope module will not operate properly.
HP 16532A - Service 5. On the HP 54502A Oscilloscope, set the following parameters, in the order given. Menu Channel Selection Probe V/Div Offset Coupling Setting 1.000:1 200 mV 0.0 V DC Timebase s/Div Acquisition 10 ns Realtime Trigger Mode Level Slope Edge − 200 mV Falling 6. In the HP 16532A Oscilloscope trigger menu, select Auto-Trig On. Verify that the 100 MHz System Clock is gated. 7. Select STOP on both the HP 54502A and HP 16532A oscilloscopes. 8.
HP 16532A - Service Troubleshooting Sheet 1 H P 1 6 5 3 2 A T R O U B L E S H O O T I N G S H E E T 1 Figure 6-10.
HP 16532A - Service Troubleshooting Sheet 2 H P 1 6 5 3 2 A T R O U B L E S H O O T I N G S H E E T 2 Figure 6-10.
HP 16532A - Service Troubleshooting Sheet 3 H P 1 6 5 3 2 A T R O U B L E S H O O T I N G S H E E T Figure 6-10.
HP 16532A - Service Troubleshooting Sheet 4 H P 1 6 5 3 2 A T R O U B L E S H O O T I N G S H E E T 4 Figure 6-10.
HP 16532A - Service Troubleshooting Sheet 5 H P 1 6 5 3 2 A T R O U B L E S H O O T I N G Figure 6-10.
HP 16532A - Service 6-9. Oscilloscope Module Removal and Replacement The effects of ELECTROSTATIC DISCHARGE can damage electronic components. Use grounded wrist straps and mats when you are performing any kind of service on this module. When you need to remove and replace a module, test the module first to determine the faulty part. If either of the trigger cables are faulty, remove the faulty cable and replace it with a new one. Refer to paragraph 6-10 for procedures to remove and replace a faulty cable.
HP 16532A - Service 5. If a trigger cable was determined to be faulty, replace the faulty trigger cable on the oscilloscope module (refer to paragraph 6-10). Otherwise, skip to step 6. 6. If an attenuator was determined to be faulty, replace the faulty attenuator on the oscilloscope module (refer to paragraph 6-11). Otherwise, skip to step 7. 7. If the oscilloscope module was determined to be faulty, remove the attenuators from the oscilloscope module (refer to paragraph 6-11). 8.
HP 16532A - Service 6-10. Trigger Cable Removal and Replacement The effects of ELECTROSTATIC DISCHARGE can damage electronic components. Use grounded wriststraps and mats when performing any kind of service to this instrument or the cards in it. Trigger Cable Removal Procedure: 1. Follow the procedures given in paragraph 6-9 "Oscilloscope Module Removal and Replacement" to remove the HP 16532A Oscilloscope Module to be serviced. 2.
3. Pull the straight SMB connector on the cable through the hole in the rear panel. 4. Pull the right-angle SMB connector on the cable away from its mating connector on the board. 5. Install a new cable (refer to the next paragraph). Trigger Cable Replacement Procedure: 1. Install the straight SMB connector on the cable through the hole in the rear panel. See figure 6-13. 2. Attach the washer (H5) and the hex nut (H4) to the straight SMB connector on the cable. Tighten the hex nut. 3.
HP 16532A - Service Attenuator Replacement Procedure: a. Gently push the attenuator assembly (A2) straight down on the board assembly (A1) being careful not to damage the connector and the components beneath the attenuator assembly. See figure 6-13. b. Attach the attenuator assembly (A2) to the board assembly (A1) with the two attenuator retainer screws (H7). c. Assemble the rear panel (MP1) and the ground spring (MP2) to the board assembly (A1) and attach them with the three end plate screws (H6).
CERTIFICATION Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute’s calibration facility, and to the calibration facilities of other International Standards Organization members.
