Registrati on numerar. TI-24436 Ce€0682 0 S$96 Km 113 70027 Palo del Colle (Ba) ITALI Tel.
Index Warning Warranty .. Introduction Content of the manual Treatment of electrical shock . First-aid Treatment of electrical burns. NOE oo Section 1 Information 1.1 Description 1.2 Technical characteristics. 1.3 Block diagram .. Section 2 Installation 2.1 Operating environment . 2.2 Preliminary operations .. 2.3 Telemarketing socket connections . 2.4 R8232 Socket connections. 2.5 Menu description 2.6 Protection thresholds, alarms and settings 2.7 Channel change procedure 2.8 Preventive maintenance ..
General section calibration External AGC operation SCHOLARSHIP (Control board and display) Adjustment points calibration SCHOOLMARM (IV-VBA VCO Integrated) Adjustment points calibration .. MTGOO050AR0 (40dB UHF Filter) . ~ Calibration procedure... SCHOOLMARM (Interface board} SCHOOLMARM (5W Amplifier module) . SCHOOLMARM (2W Amplifier module) E0004 (S-150-24 Switching power supply) .
WARNING The apparatus described in this manual has been designed and manufactured with devices to safeguard the users. In any case it is recommended that during any operation of installation, maintenance, miscellaneous interventions and calibrations requiring the apparatus to be switched on, THE USER TAKES ALL THE PRECAUTIONS AGAINST INCIDENT: Tt is required to use the proper clothes and protection gloves in order to prevent damages from incidental contacts with high-voltage parts.
Warranty Summary of warranty We, ELECTRONICA S.r.d, $5096 Kin 113 ZL PAL DEL CELLO (BA) ITALY, warrant to the ORIGINAL PURCHASER of a NEW product, fora period of one (1) year from the date of purchase by the original purchaser (the “warranty period”) that the new ELECTRONICA product is freak of defects in materials and workmanship and will meet or exceed all advertised specifications for such a product.
INTRODUCTION The apparatus described in this manual is the latest of this series, offering high performances, remarkable reliability and a wide range of characteristics, it all at a low cost. Its is easy to install and use. It only takes to follow the installation procedure as shown in this manual: after having removed all from the package, you only have to follow step by step the description in the various sections.
WARNING! 1 It observe saf elation! This manual is intended as a general guide for trained and qualified personnel who are aware of the dangers inherent in handling potentially hazardous electrical and electronic circuits. Iris not intended to contain a complete statement of all safety precautions which should be observed by personnel in using this or other electronic equipment.
Treatment of electrical shock 1) If victim is not responsive follow the basic life support. PLACE VICTIM FLAT ON HIS BA A HARD SURFACE A AIRWAY B-BREATHING If unconscious, open airway lift up neck, push If not breathing, begin artificial breathing. Tilt forehead back, clear out mouth if necessary, head, pinch nostrils, make airtight seal, 4 quick observe for breathing. full breaths. Bereavement mouth to mouth resuscitation must be commenced as soon as possible. CIRCULATION Check carotid pulse.
2) If victim is responsive: keep them warm; keep them as quiet as possible; loosen their clothing (a reclining position is recommended). FIRST-AID Personnel engaged in the installation, operation, maintenance or servicing of this equipment are urged to become familiar with first-aid theory and practices. The following information is not intended to be a complete first-aid procedure, it is brief and is only to be used as a reference.
CAVOUR UHF CAV TV SYSTEM 1.1 DESCRIPTION One of the goals while designing this apparatus was to obtain an apparatus easy to mount and in the logistic disposition of its components, yet aesthetically pleasant and functional.
Main features: Rack 197-2. Power supply: 115/230Vac 50/60Hz. Indication of the main parameters on LCD display (Forward and Reflected power; Audio modulation, Synchronicity level, Heat sink temperature, PLL control voltage, Power supply voltage and current absorbed by the final stage). Alarm thresholds for FWD Power (Pout REF Power (20% Pout) and Temperature Power supply input on IEC box with double fuse on the check. RF output with N connector on the rack. Video input with BNC connector on the frontal.
Section 2 Installation Contents: 2.1 Operating environment 2.2 Preliminary operations 2.3 Telemarketing socket connections 2.4 R5232 Socket connections 2.5 Menu description 2.6 Protection thresholds, alarms and settings 2.7 Channel change procedure 2.
2.1 OPERATING ENVIRONMENT The apparatus can be installed in a standard component rack or on a suitable surface such as bench or desk. In any case, the area should be as clean and well-ventilated as possible. Always allow for at least 2 cm of clearance under the unit for ventilation. If you set the apparatus on a flat surface, install spacers on the bottom cover plate. If you install the apparatus in a rack, provide adequate clearance above and below.
1 pre nonevents WARNING!!! CABLE. FOR ELECTRICAL SAFETY REASONS AND IN ORDER TQ KEEP THE APPARATUS SAFE, THE GROUND TERMINAL OF THE APPARATUS MUST BE CONNECTED TO THE EXISTING GROUNDING SYSTEM AND NOT BY USING THE SHIELD OF THE OUTPUT COAXIAL 2.3 TELEMARKETING SOCKET CONNECTIONS 1 GND 2 GND GND 4 GND 5 GND DBE Socket 6 Analog Output Reflected Power 7 Analog Output Forward Power 8 Digital Output hi i. GRIND OFF ® Digital Input 5V or Floating= ON 2.
2.5 MENU DESCRIPTION / TV Transmit. SW Software V 2.0 — Standard G-H Sync Meter Audio Meter FE SERENENESS — FWD Power 5W REF Power ow Lo PLATE TH] Tempe rat. 35.0°C Lo REFERRERS PLL con.
Current Amp 6.4A Voltage Amp 27.5V Cee DIFFERENCES PLL video Lock PLL audio Lock — Offset 0 — Channel 66th \ Remote Control Power ON Fwd Alarm Level 18W — Amplifier absorbed current indication Amplifier power supply voltage indication IF oscillators status indication OFFSET indication Transmission channel indication Remote Control status indication Forward Alarm level indication 23
2.6 PROTECTION THRESHOLDS, ALARMS AND SETTINGS Incas of breakdown or unlock of one of the Pl Ls, the power of the transmitter is automatically decreased to zero and the “ALARM” indication is shown on the display, which then automatically enters the menu of the faulty parameter. When the alarm disappears, the transmitter is turned on again. After five ON/OFF cycles, the transmitter is blocked with a “FAULT” indication on the parameter which caused the stop.
key. 4. Reposition JP1 on SCHOLARSHIP (Display mode). 5. Scroll the "PLL CON" menu to display the lock voltage of the PLL. 6. Adjust C20 (fine) and C31 (coarse) on SCHOOLMARM to Sock the PLL ("lock™ indication on the display and lock voltage in the middle). 7. Re-tune the channel filter MT(GO0S0ARD as per the calibration procedure. 2.
Front panel Video section 750 BNC Video input 1Vpp +648 adjustable Sound carrier feel adjustment Audio input 10k/60002 Cannonball Audio input 1Vpp adjustable Three-cell linearity per-corrector Automatic / Manual level control -3dB Output power with no sync IF (-DBMS) Link Microprocessor control! readings FWD Power level with lama REF Power level with alarm Audio meter Sync meter = IF Carrier lock status with lama 1.0.
CALIBRATION POINTS Adjustments points description C23 Video carrier oscillator tuning capacitor C26 Audio carrier oscillator tuning capacitor DLA Locked video IF PLL indication LED DL2 Locked audio IF PLL indication LED DL4 Board power indication LED DL3 Modulation section power indication LED DLs Locked local oscillator PLL indication LED Diddly Conversion section power indication LED DL? Base band section power supply indication LED DL8 Enabled linearity per-carrector LED DL9 3dB Power decrease indication
J14 SMB IF output signal monitor connector before the mixer J12 SMB 500 RF output signal connector J15 SMB 50Q Local oscillator output monitor connector J16é SMB 50 IF input connector JP Expansion / Compression function selection cell n.
R70 Synchronicity limitation circuit intervention setting trimmer R79 Audio deviation regulation trimmer R84 Regenerated synchronicity level regulation trimmer R86 Video synchronicity level indication regulation trimmer R87 Audio deviation level indication regulation trimmer R109 White limitation circuit intervention setting trimmer R116 Audio deviation limitation circuit symmetry trimmer R142-143 Automatic / Manual input AGC level R263 Reflected power indication regulation trimmer R259 Forward power indica
R300 Audio sub carrier level regulation trimmer R302 Audio input level regulation trimmer R303-304-305 [Knee and inclination phase of the cell. 1 R306-307-308 | Knee and inclination phase of the cell n. 2 R309-310-311 | Knee and inclination phase of the cell n. 3 R312 IF Gain regulation trimmer in normal mode R314 IF Gain regulation trimmer in automatic mode R316 IF Gain regulation trimmer in automatic mode with ext. amplifier R317 QC Fine tuning Freq. adj.
VIDEO BASE BAND SECTION CHECK Video Restore Processor: set JP5-JP20 on PCPS_ON and JP13-JP18 on GOFF, connect a video source with BITS to J22 and a video parameter measure equipment on J13 (video base band output) and check the functionality of the included sections. a Check that while JP7 on SYNC _REST ON the level of the regenerated synchronicity can be adjust by means of R84 (this level can be measured on J11).
response required by the system standard. If needed perform a fine tuning of the tuning frequency of the cells by acting on MF2...MF9. FLESH Ides Meczuramsnt Seb Channel § System Pei obelisk OB Gris fb Ling = 288 (0 ford Tads Sedated Bod. wh 9.24 Mx) Grows Dale Go send 19.04 8h es “rus. ~aue.ef ~aes.
INTERMEDIATE FREQUENCY SECTION CHECK IF Carriers (Video & Audio): set JP1 on SCION, select the standard of the included section. a Calibrate C23-1.7 to a voltage of 2,5V on J3 with DIDDLY on (PLL locked). a Calibrate C26-1.9 to a voltage of 2,5V on J4 with DIDDLY on (PLL locked).
UP-CONVERTER CHECK Local Oscillator: set COVE with the board for the desired band, select the desired channel from the display board (see relevant documentation) and check the functionality of the included sections. a Calibrate the local oscillator (see relevant documentation) to the desired channel with DLS on (PLL Socked) and check the current tuning on the display board (indication of the VCO instrument at half-scale) by connecting a spectrum analyses on J15 (OL monitor).
EXTERNAL AGC OPERATION a With SW2 on“ AUTO" the exciter will be in Automatic Gain Control mode. a Selecting SW3 on “INT” an AGC on the internal power amplifier will be performed acting on R314 (optionally in this mode an external voltage connected on J18, can be used to fine adjust, £10%, the power remotely. a Selecting SW3 on “EXT” a fine ALC (Automatic Level Control), £10%, can be performed on an external power amplifier which the forward directional couplet is fed to J17 (optional).
CONTROL BOARD AND DISPLAY SCHOLARSHIP TECHNICAL CHARACTERISTICS Analog readings Forward power Reflected power Synchronicity level Audio deviation Heat sink temperature Channel VCO tuning Final stage working voltage Current absorbed by the final stage = Digital controls IF PLL Lock status Alarm status ON-OFF =~ Programming SPLIFF Channel PLL Component layout SCHOOLGIRL 1 Indication on analog instrument and numerical with alarm Indication on analog instrument and numerical with alarm Indication on analog inst
ADJUSTMENT POINTS DESCRIPTION JP1 Jumper for mode setting J Telemarketing connector Jz Microprocessor in-circuit programming pan J3 Connector for connection to mother board Ja RS232 Connector Calibration procedure: the board does not need any calibration, it only takes checking that it works for the concerned application.
IV-VBA VCO INTEGRATED SCHOOLMARM TECHNICAL CHARACTERISTICS Working frequency 500..900MHz Programming PLL with manual nine of the oscillator Tuning indication Analog 0...
§-150-24 SWITCHING POWER SUPPLY E0004 DESCRIPTION The emi filter block suppresses the electrical noise injected by the psu over the mains, reducing both differential and common mode noise. In this block is located a 4A fuse. The input rectifier and filter stage performs the AC/DC conversion to the following high frequency power conversion.