CJJ79XITS-7040MDS/MMDS/ITFS Digital Transmitter

ADC TELECOMMUNICATIONS TECHNICAL MANUAL EXHIBIT II (PRELIMINARY) 5721 DIGITAL ITFS/MDS/MMDS TRANSMITTER REV: 0 102 Rahway Road McMurray, PA 15317 USA Phone 412-941-1500 FAX 412-941-9421 5721 TABLE OF CONTENTS I.INTRODUCTION: II.SYSTEM 5721: ...................................................................................................................................... 1585-1001 A. SYSTEM DESCRIPTION B. ITRODUCTION (Safety, Packing, Warranty, Technical Information) C. SPECIFICATIONS D. INITIAL TURN ON E: NORMAL OPERATION F: SETUP III.DRAWINGS: A. DRAWINGS: 1. BLOCK DIAGRAM ............................................................................................. 1585-3000 2. INTERCONNECT ................................................................................................ 1585-8000 B. 5721 SUBASSEMBLIES 5721 SYSTEM DESCRIPTION The 5721 is a complete MDS/MMDS/ITFS transmitter capable of operating as a television transmitter at a nominal power of 2.5 watts average output power. The 5721 incorporates Automatic Level Control (ALC) to maintain a constant output power level. Combining the latest in GaAs FET amplifier technology, the 5721 delivers an output power of 2.5 watts (average). The unit's circuitry is enclosed in a tray assembly designed for mounting in a standard 19" equipment rack. The unit comes complete with slide rail mounting hardware to allow the tray to move in and out of the rack for ease of service. The outside dimensions of the tray assembly are 19" x 21" x 8.75" (WxDxH). The 5721 is factory calibrated for a front panel LCD display power meter reading of 100%, which represents the rated output power of the unit (unless otherwise specified). ! !! ! WARNING!!! " "" " HIGH VOLTAGE # ## # DO NOT ATTEMPT TO REPAIR OR TROUBLESHOOT THIS EQUIPMENT UNLESS YOU ARE FAMILIAR WITH ITS OPERATION AND EXPERIENCED IN SERVICING HIGH VOLTAGE EQUIPMENT. LETHAL VOLTAGES ARE PRESENT WHEN POWER IS APPLIED TO THIS SYSTEM. IF POSSIBLE, TURN OFF POWER BEFORE MAKING ADJUSTMENTS TO THE SYSTEM. $ $$ $ RADIO FREQUENCY RADIATION HAZARD $ $$ $ MICROWAVE AMPLIFIERS AND TUBES GENERATE HAZARDOUS RF RADIATION WHICH CAN CAUSE SEVERE INJURY INCLUDING CATARACTS, WHICH CAN RESULT IN BLINDNESS. SOME CARDIAC PACEMAKERS MAY BE AFFECTED BY THE RF ENERGY EMITTED BY MICROWAVE AMPLIFIERS. NEVER OPERATE A MICROWAVE SYSTEM WITHOUT A PROPERLY MATCHED RF ENERGY ABSORBING LOAD ATTACHED. KEEP PERSONNEL AWAY FROM OPEN WAVEGUIDES AND ANTENNAS. NEVER LOOK INTO AN OPEN WAVEGUIDE OR ANTENNA. MONITOR ALL PARTS OF THE RF SYSTEM FOR RADIATION LEAKAGE AT REGULAR INTERVALS. EMERGENCY FIRST AID INSTRUCTIONS Personnel engaged in the installation, operation, or maintenance of this equipment are urged to become familiar with the following rules both in theory and practice. It is the duty of all operating personnel to be prepared to give adequate Emergency First Aid and thereby prevent avoidable loss of life. RESCUE BREATHING 1. Find out if the person is breathing. You must find out if the person has stopped breathing. If you think he is not breathing , place him flat on his back. Put your ear close to his mouth and look at his chest. If he is breathing you can feel the air on your cheek. You can see his chest move up and down. If you do not feel the air or see the chest move, he is not breathing. 2. If he is not, open the airway by tilting his head backwards. Lift up his neck with one hand and push down on his forehead with the other. This opens the airway. Sometimes doing this will let the person breathe again by himself. If is does not, begin rescue breathing. 3. If he is still not breathing, begin rescue breathing. -Keep his head tilted backward. Pinch nose shut. -Put your mouth tightly over his mouth. -Blow into his mouth once every five seconds - DO NOT stop rescue breathing breathing until help comes. LOOSEN CLOTHING - KEEP WARM Do this when the victim is breathing by himself or help is available. Keep him as quiet as possible and from becoming chilled. Otherwise treat him for shock. BURNS SKIN REDDENED: Apply ice cold water to burned area to prevent burn from going deeper into skin tissue. Cover area with clean sheet or cloth to keep away air. Consult a physician. SKIN BLISTERED OR FLESH CHARRED: Apply ice cold water to burned area to prevent burn from going deeper into skin tissue. Cover area with clean sheet or cloth to keep away air. Treat victim for shock and take to hospital. EXTENSIVE BURN - SKIN BROKEN: Cover area with clean sheet or cloth to keep away air. Treat victim for shock and take to hospital. WARNING!!! DO NOT ATTEMPT TO REPAIR OR TROUBLESHOOT THIS EQUIPMENT UNLESS YOU ARE FAMILIAR WITH ITS OPERATION AND EXPERIENCED IN SERVICING HIGH VOLTAGE EQUIPMENT. LETHAL VOLTAGES ARE PRESENT WHEN POWER IS APPLIED TO THIS SYSTEM. IF POSSIBLE, TURN OFF POWER BEFORE MAKING ADJUSTMENTS TO THE SYSTEM. ✉ ✉✉ ✉ MATERIAL RETURN PROCEDURE In order to efficiently handle equipment or components returned for repair or sent out on loan, ADC requests that each returned item be accompanied by a Material Return Authorization Number (MRA#). To obtain an MRA follow the procedures below: ❐ ❐❐ ❐ Call ADC Customer Service at (800) 215-2614 or FAX (724) 941-4603 ❐ ❐❐ ❐ A Service Engineer will provide you with an MRA# ❐ ❐❐ ❐ Write the MRA# on the packing list or in the case of repairs, a note describing the reason for return. Also, be sure to include contact information. ❐ ❐❐ ❐ Send ALL MRA items to the following address ADC CORPORATION 102 RAHWAY ROAD McMURRAY PA 15317    TELEPHONE TECHNICAL SUPPORT ADC currently provides free telephone technical support. When calling, be prepared to provide the following information: ❐ ❐❐ ❐ Transmitter model # AND Serial # ❐ ❐❐ ❐ Status of front panel LED’s (are any red LED’s on ?) ❐ ❐❐ ❐ Have a copy of your operation manual ready prior to calling From 8:00 AM - 5:00 PM EST call (800) 215-2614 for technical support % %% % PROPER PACKING OF MATERIALS When returning materials to ADC, it is extremel…

Text truncated - open the document above for the full version.

ADC TELECOMMUNICATIONS TECHNICAL MANUAL EXHIBIT III (PRELIMINARY) CM720M QAM DIGITAL CABLE MODULATOR REV: 0 102 Rahway Road McMurray, PA 15317 USA Phone 412-941-1500 FAX 412-941-9421

4.4.1 Front view, Complete 5721 Transmitter (Closed Front Panel) 4.4.2 Front view, Upconverter Amplifier Tray (Open Front Panel) 4.4.3 Rear view, Complete 5721 Transmitter

4.0IDENTIFICATION LABELS/LABEL PLACEMENT AND PHOTOGRAPHS 4.1 Rear Panel FCC Identification Label: Note: The following Identification Labels and Label Placement Drawing can also be found in the Labels Location attachment. 4.2 Rear Panel ADC Telecommunications Manufacturer's Label: 4.0IDENTIFICATION LABELS/LABEL PLACEMENT AND PHOTOGRAPHS 4.3 Rear Panel Drawing (Label Placement):

4.4.4 Top view, 5721, IF Processing Module 4.4.5 Top view, 5721, Local Oscillator/Upconverter Module 4.4.6 Top view, 5721, Power Supply Module 4.4.7 Top view, 5721, Transmitter Control and Monitoring Module 4.4.8 Top view, 5721, Power Amplifier Module

2.0TECHNICAL DESCRIPTION 2.4 Circuit Description The 5721 ITFS/MDS/MMDS Digital Transmitter can be subdivided further as follows: Modulator Tray- Digital Data Input Card - IF Output QAM Modulator Card - Front Panel Display and Control - Power Supply Upconverter/Amplifier Tray- Modulator Module - IF Processing Module - Power Amplifier Module - Power Supply Module - Control Monitoring Module - L.O./Upconverter Module - Backplane Board - Front Panel LCD Display/Keypad Entry 2.0TECHNICAL DESCRIPTION 2.4 Circuit Description Modulator Tray Due to proprietary concerns on the part of Comstream Corporation, The circuit description of the CM720M modulator will be presented on a system level. The CM720M modulator tray generates a 64 QAM digital IF output which is used to drive the upconverter/amplifier tray. External, multiplexed 28 MBPS data is applied to the rear of the modulator tray using a shielded RJ-45 jack (J5). The digital data is received using an IC chip set known as TAXI ® (Transparent Asynchronous Transmitter/Receiver Interface) on the Digital Data Input Card. TAXI is a registered trademark of Advanced Micro Devices (AMD). The TAXI receiver operates in 10 bits-per-byte mode (8 data bits, 1 even parity bit, 1 active low-frame sync bit). The TAXI receiver reference clock (5 MHz) is fed to the modulator. The digital bit stream of data from the Digital Data Card is fed to the Quadrature Amplitude Modulator (QAM) digital modulator on the Modulator Card. The data/clock signal is continuously monitored for the following: 1. Clock out of spec (more/less than 100 ppm of spec) 2. Loss of clock 3. Parity errors 4. Frame sync errors 5. Sync acquisition errors 6. TAXI decoding violations The system is normally frequency locked to the input clock. If the input clock is not present, the system switches over to internal timing to preserve the output spectrum. When the system clock returns, the system will detect the presence of the clock and return to normal operation. The outptut power of the modulator, which is monitored continuously , is adjustable form -27 dBm to -5 dBm. The front panel of the CM720M modulator contains a seven-segment LED display, a LCD display, two LED fault indicators, control keys, and a numerical keypad to monitor and control the operating status of the tray. Also included on the front panel are IF and RF output test ports (refer to Chapter 3: Front Panel Operation of the Installation and Operation Manual, included in Exhibit II of this report, for a complete description of front panel operation). The CM720M power supply is autoranging for AC inputs from 90 to 264 VAC and 47 to 63 Hz. 2.0TECHNICAL DESCRIPTION 2.4 Circuit Description - continued IF Processing Module The IF output signal from the CM720M modulator is applied to the IF input jack (J14) on the rear of the tray. This IF input signal is then fed to the IF Processing Card (1585-3108). The IF signal enters the card at J1 and is transformer coupled for impeadance matching of the IF signal (75Ω to 50Ω). The signal is then applied to an adjustable resistor pad network which allows for three IF input level ranges of 10 dB each. The signal is amplified and applied to a 6 dB transformer directional coupler which provides a sample to a peak detector in the ALC portion of the circuit. The main output of the coupler is fed to frequency response correction circuitry which consist of four adjustable notch filters. The frequency response correction circuit may be removed using on board jumpers. The output of the frequency response corrector is amplified and applied to a PIN diode attenuator. The ALC circuitry takes a peak detected sample of the IF signal and generates an ALC voltage which biases the PIN diode attenuator. The ALC circuit senses any change in the IF level and automatically adjust the loss through the PIN attenuator to compensate, thereby maintaining a constant IF output regardless of minor changes in the input signal. The ALC circuit uses a DC level generated externally to control the output power level. There are two possible bias voltage inputs. The first, Inner Loop, is generated form a peak detected sample of the output amplifier. The second, Outer Loop, is used only if an external final amplifier tray is connected to the system. If both Inner Loop and Outer Loop inputs are used, the signal that is the largest in level controls the ALC circuit. The ALC circuit may be bypassed by placing switch SW2 in the manual position. When the ALC circuit is disabled, the loss through the PIN attenuator is adjusted by a manual gain potentiometer which then directly controls the output in a manual fashion. The ALC circuit also contains a average detector which detects the average level of the IF signal. This average level is compared to the output of the peak detector and if the average level approaches the peak level, indicating a loss of modulation on the IF signal, a mute signal will be generated muting the IF. This prevents against overpower conditions in situations where the modulating signal is interrupted. The ALC circuit provides several front panel LED indicators including: Peak Vs. Average Fault, I/P Fault, Mute, and ALC Fault. The output of the PIN diode attenuator is amplified an applied to three sections of group delay equalization which compensate for group delay created by external filters. Each section of group delay may be removed from the circuit using on board jumpers. For non-adjacent analog applications, Delay Equalizer 1 is removed from the circuit. For adjacent analog applications, all three sections are used. For adjacent and non-adjacent digital applications, Delay Equalizer 3 is removed from the circuit. The output of the delay equalizer circuit is fed to a 6 MHz lumped element bandpass filter. The bandpass filter may be removed from the circuit using on board jumpers. The bandpass filter may also be bypassed through a SAW filter when tight filtering of the IF is required. The output of the bandpass f…

Text truncated - open the document above for the full version.

2.0TECHNICAL DESCRIPTION 2.5 Alignment Procedure In the following procedure, the complete transmitter is adjusted for optimum performance, beginning with the start up procedure of the CM720M modulator, followed by the upconverter/amplifier, starting at the baseband input and adjusting each circuit for its specified performance while observing the appropriate output parameters of the board or subassembly being adjusted. Because of the broadband nature of most of the amplifier stages, this is a straightforward procedure, easily accomplished if baseband, IF, and RF test equipment is available. In this procedure, the input signals are first connected and each circuit is adjusted in sequence by connecting the test equipment to the specified point. Equipment Needed Spectrum Analyzer10 MHz Reference Generator OscilloscopeVideo Signal Generator RF Power MeterVoltmeter 30 dB Directional Coupler50Ω Load 10 dB Directional Coupler Adjust the spectrum analyzer for the following settings: 1. Resolution BW = 30 KHz 2. Video Averaging (ON) = 10 3. Span = 20 MHz 4. Video Bandwidth = 30 KHzx 5. Center Frequency = 44 MHz The average power of a modulated QAM digital signal, with the specified analyzer settings, is +23dB higher than the displayed signal. The measurements in this alignment procedure will be given in average levels. Example: Analyzer reading of –30 dBm Average power = -30 dBm + 23 dBm = - 7 dBm. 2.0TECHNICAL DESCRIPTION 2.5 Alignment Procedure - continued MODULATOR TRAY Follow the step listed below to bring the CM720M modulator online. 1.Turn on the tray by connecting the AC power cable the unit and observing the front panel LEDs. The front panel lights flash through a consistent sequence when the unit is first powered on. when power-up is complete, the four seven-segment LEDs will illuminate, and the Fault LEDs will not illuminate. 2.Verify that the power-up message is displayed on the front panel LCD. If necessary, adjust the LCD contrast by pressing the increase/decrease buttons on the front panel. 3.Set the time/date. 4.Set the transmit power to -40 dBm to -50 dBm. 5.Confirm that transmit power is enabled. 6.Use the front panel to verify that the AQM mode is at the desired setting. 7.Use the front panel to verify that the scrambler, Reed-Solomon encoder, interleaver, and differential encoder are all enabled. At this point the CM720M modulator has been powered up and the output spectrum may be observed. Using a spectrum analyzer verify the proper shape and center frequency (44 MHz) of the spectrum at the IF output port (J5). Verify that the power level corresponds to that set in step 4 above. The modulator circuitry requires no user adjustments. 2.0TECHNICAL DESCRIPTION 2.5 Alignment Procedure - continued UPCONVERTER/AMPLIFIER TRAY Control Monitoring Module (A4) 1585-1129 Set front panel configuration DIP switches as follows: SW1Open (no external amplifier) SW5Open (not used) SW1Open (external ITS-5010 modulator) SW6Open (not used) SW3Open (not used) SW7Open (not used) SW4Open (not used) SW8Open (English language LCD) IF Processing Module (A3) 1585-1207 1. Select 75Ω input impeadance using jumpers J28 and J29. 2. Select Low Input Impeadance using jumpers J8, J9, J10 and J11. 3. Enable Peak Vs. Average detection by placing J30 into the In position. 4. Enable Frequency Response Correction by placing J2 and J3 into the In position. 5. Set Delay Equilizers and Attenuation Equilizers as follows: Delay Equlizer1 (J35, J36)Out Attenuation Equlizer1 (J37, J38)Out Delay Equlizer2 (J43, J44)Out Delay Equlizer3 (J31, J32)Out Attenuation Equlizer3 (J33, J34)Out 6. Set filter circuit to Band Pass Filter by placing jumpers J19, J20, J22 and J23 into the BPF position. 7. Select High Output Gain by placing jumpers J26 and J27 into the High position. 8. Remove linear equalization by placing front panel Linear Equalization toggle switch into the out position. 9. Select Manual Gain by placing Gain Selection toggle switch into the Manual position. LO/Upconverter Module (A5) 1585-1143 1. Place Reference jumper J1 into the External position.. 2.0TECHNICAL DESCRIPTION 2.5 Alignment Procedure - continued Power Amplifier Module (A6) 1585-1136 1. Select Average Detection by placing J2 into the Average position on the Dual Power Detector Module. 2.0TECHNICAL DESCRIPTION 2.5 Alignment Procedure - continued Connect the 5721 as shown below: Power Setup/Meter Calibration 1. Apply power to the tray by placing the rear panel power switch (CB1) into the on position. 2. Measure voltage on Forward Detector Level test point on the Power Amplifier module front panel and adjust for 0 volts using the Forward Zero potentiometer. 3. Measure voltage on Reflective Detected Level test point on the Power Amplifier module front panel and adjust for 0 volts using the Reflected Zero potentiometer. 4. Verify that no faults are displayed on the LCD display on the front panel of the tray. 5. Place transmitter into operate by pressing the Operate button below the LCD display. 6. Adjust Manual Gain potentiometer on front panel of IF Processing module for 2.5 watts (average) as observed on RF power meter. 7. Measure voltage on Forward Detected test point on front panel of Power Amplifier module and adjust for 1 volt using the Forward Level potentiometer. 8. Place transmitter into standby by pressing the Standby button below the font panel LCD display. 9. Remove cable connection from RF output jack (J8) of tray. 10. Place transmitter into operate mode by pressing the Operate button below the front panel LCD display. 11. Measure Reflective Detected Level test point and adjust for 1V using Reflected Level potentiometer. 12. Place transmitter into standby by pressing the Standby button below the front panel LCD display. 2.0TECHNICAL DESCRIPTION 2.5 Alignment Procedure - continued 13. Reconnect cable to RF output jack (J8) of the tray. 14. Place transmitter into the operate mode by pressing the Operate button below the front panel LCD display. 15. A…

Text truncated - open the document above for the full version.

A A B B C C D D E E 44 33 22 11 GATE LEVEL ZERO ADJ. FWD. METERING ADJ. FWD. METERING O/P TIMING ADJ. SCRAMBLER TIMING PULSE O/P KEY RTN REFLECTED METERING O/P SCRAMBLER TIMING PULSE I/P ZERO ADJ. REFL. MTRG. ADJ. FORWARD SAMPLE I/P REFLECTED SAMPLE I/P -12V +12V W1 PEAKAVG. RTN RTN RTN NOTES: 1.) ALL RESISTORS ARE 1/8W UNLESS OTHERWISE NOTED. 2.) ALL CAPACITORS ARE IN uF UNLESS OTHERWISE NOTED. 3.) ALL INDUCTORS ARE IN uH UNLESS OTHERWISE NOTED. 10/ 13/97 1 ADD ED R42 AT J3- 6. (PJK) 2 R19 & R3 8 WERE 500, C3 W AS .001, R37 WAS 150K, R10 WAS47, R 21 WAS 470K, R22 WAS 47K, R23 WAS 68K, R29 WAS10K, J3 WAS 10 POS., R3, R8, R18 , & R35 WER E 2.7K, MOVED R9, CHANGED R38 CO NNECTIONS. JKF 93 25 BK W 91 47 2/7 /98 50V 500V 3 94 41 ADDED VOLTAG ES AT C6 AND C23. JKF BK W BKW BKW 9/19/97 9/19/97 NOTE: R13, R14 AND R23 ARE NOTE USED ON THIS SCHEMATIC. 5/5/9 8 BK W 4 95 52 R5 WAS 18 O HM. R9 WAS 100 OHM. R10 WAS 0 O HM. R26 WAS 10K O HM. DELETED R 13 & R14 (300 OHMS) ON EITH ER SIDE OF R5 TO GROUN D. (RFB) --------- --------- 10/1/ 98 BK W 1585-31254 SCH., DUAL POWER DETECTOR BD. (1585-1125) JKF9/11/97 D1 OF 1 ADC Telecommunications REVECODATEAPV TITLE THIS PRINT IS THE PROPERTY OF ADC, IT SHALL NOT BE COPIED WITHOUT PERMISSION MATERIAL FINISH DWN CHK REL SCALESHEET REV REV ECO DATE APV DWG. NO. --- -5V +5V -12V +12V +12V -12V +5V -5V +12V -12V +12V +5V+5V -5V +5V -12V +12V -5V +5V +12V -12V +12V -12V +12V -12V R13 ----- R14 -----C10 .001 C11 .47 C5 4.7pF C2 300 pF C1 4.7pF R33 100 C20 300 pF R30 100 C23 100pF L5 .47uH R31 2.2K C4 .1 C7 .1 R4 1K R24 5K CW 3 2 1 R36 470K C25 .47 C26 .1 C27 .1 R16 1K C8 .001 R11 150K Q1 BS170 Q2 BS170 R28 1.2K C18 .1 C16 .47 C21 470pF C22 470pF R27 4.7K R25 50K CW 3 2 1 Q3 BS170 C9 .1 C14 .1 R17 10K CW 3 2 1 R12 1K U2 MC78L05ACP I 3 GND 2 O 1 L3 .47uH L4 .47uH C15 300 pF C17 300 pF C19 .1 R40 10K R39 10K J1 SMA J4 SMA R34 10K CW 3 2 1 CR2 5082-2811 CR1 5082-2811 CR3 5082-2811 CR5 5082-2811 + - U1A TL082 + - 3 2 1 8 4 + - U1B TL082 + - 5 6 7 8 4 TP1 TP3 TP2 U3A M74HC123B1R RC1 15 CEXT1 14 B1 2 A1 1 GND 8 Q1 4 Q1 13 Vcc 16 CLR1 3 U3B M74HC123B1R RC2 7 CEXT2 6 B2 10 A2 9 Q2 12 CLR2 11 Q2 5 R2 51 L1 .47uH R1 2.2K R15 4.7K R7 2.2K L2 .47uH J2 1 2 3 R32 10K CR4 5082-2811 C12 .1 C13 .1 R41 1K C6 100pF + - U4A TLO74 + - 3 2 1 11 4 + - U4B TLO74 + - 5 6 7 11 4 + - U4C TLO74 + - 10 9 8 11 4 + - U4D TLO74 + - 12 13 14 11 4 R37 470K C3 .1 R21 150K R22 470K R29 1K J3 1 2 3 4 5 6 7 8 9 10 11 R38 2K CW 3 2 1 R3 1K R8 1K R35 1K R18 1K R19 2K CW 3 2 1 R23 ----- R42 100K R5 0 R20 1K R9 220 R10 10 R26 6.8K

17 17 16 16 15 15 14 14 13 13 12 12 11 11 10 10 9 9 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 KK JJ II HH GG FF EE DD CC BB AA TS1 -5 V BIASSENSE O/P AMPSTATUS RTN OVERTEMPFLTKEY +10.4V RTN-5V +10 .4 V+10 .4 V+10 .4 VRTN UNUSED REF. -12V NOTES: 1) ALL RESISTORS ARE 1/8W UNLESS OTHERWISE NOTED. 2) ALL CAPACITORS ARE IN uF UNLESS OTHERWISE NOTED. SPARE FUSES -12V 1585-3270 0 SCH., BIAS PROTECTION BOARD, 1 SECTION TMY 12/16/97 C1 OF 1 ITS CORPORATION REVECNDATEAPV TITLE THIS PRINT IS THE PROPERTY OF ITS CORP IT SHALL NOT BE COPIED WITHOUT PERMISSION MATERIAL FINISH DWN CHK REL SCALESHEET REV REV ECN DATE APV DWG. NO. --- U4 4N25 12 45 6 J3-6 6 DS4 GREEN R57 10K 1% R18 10K 1% J4 123456 R1 510 C6 .001 F7 10A R17 10K 1% R53 10K 1% J1 12345 F4 10A R51 .05 3W R47 470K R37 10K 1% U8 LM337T 1 23 ADJ INOUT F6 10A R55 2.2K R56 510 Q1 BS170 R52 4.7K + C11 47 20V R36 10K 1% DS6 GREEN J3-1 1 R5 1K J3-2 2 R38 10K 1% J3-3 3 R43 510 J3-4 4 C10 .1 J3-5 5 + C9 10uF 50V R54 10K 1% C8 .47 J3-7 7 R16 10K 1% + - U7A LM339 76 1 312 C2 .1 R25 .05 3W + - U7C LM339 11 10 13 3 12 + - U7D LM339 9 8 14 3 12 + - U7B LM339 5 4 2 3 12 L2 .47uH

17 17 16 16 15 15 14 14 13 13 12 12 11 11 10 10 9 9 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 KK JJ II HH GG FF EE DD CC BB AA TEST INTERFACE DELETED Q12, R38, R39, R47. ADDED R134 - R138. C27, 30, 33, 34 WERE .1uF. R85, 93, 98, 103, 114, 120, 125, & 130 WERE 1K. R67 WAS 1.2K. R110, 117 WERE 47K. C4, C10-C12 WERE 10uF. R56 WAS 1K. TMY 0 12/29/97 ----- ----- - - - 3/30/98 93341 DESCRIPTION AT U9-6 WAS "EXT P.S. STATUS (AMP) O/P".DESCRIPTION ATU7-8 WAS "RMT XMTR OPER CMD I/P". REVERSED CONNECTIONS AT U14 6 AND 7. CHGD U1,U4 U5, U8, U11, U15, U16, U19, U23 TO 1590 NUMBERS. (PJK) LJ LJ 5/11/98 94242 CHGD U2, 3, 6, 7, 9, 12, 18 FROM MC74HC245ADW TO 15906237. (PJK) 1585-31302 SCH., TRANSMITTER CONTROL MONITORING BOARD TMY 12/8/97 D1 OF 2 LJ1/7/98 LJ1/7/98 ITS CORPORATION REVECNDATEAPV TITLE THIS PRINT IS THE PROPERTY OF ITS CORP IT SHALL NOT BE COPIED WITHOUT PERMISSION MATERIAL FINISH DWN CHK REL SCALESHEET REV RE V EC N DATE AP V DWG. NO. --- CONTRAST OPERATE ANODE FAULT ANODE DB3 FREQ GEN/U/C INTERLOCK DB0 LOGIC ENABLE VIDEO LOSS S3 DB2 AMPLIFIER INTERLOCK EXT O/P AMP MOD STATUS S5 OVERTEMP FAULT UNLOCK MUTE AURAL/VISUAL MUTE STBY CMD (FA) SPARE (EXT ALC I/P) DB7 SPARE VISUAL MUTE EXT REF IND DB5 S4 ABS STBY CMD DB6 O/P AMP STATUS CLOCK STBY CMD (RCVR) UNLOCK IND P.S. GOOD DB1 OPERATE CMD (FA) DB4 DATA EXT IF PRESENT IF PROCESSOR INTERLOCK MUTE FROM IF PROCESSOR INPUT FAULT PEAK VS AVG FAULT RMT XMTR STBY CMD I/P STBY CMD (RCVR) STBY CMD (FA) ABS STBY CMD RMT XMTR OPERATE CMD I/P RMT XMTR STBY CMD I/P OPERATE CMD (FA) /DS R/W AN5 AN6 AN7 AN4 AN3 AN2 AN1 AN0 R/W /DS SERIAL + SERIAL + SERIAL - SERIAL - O/P AMP STATUS /CS9 EXT REF IND -5V POWER IND UNLOCK IND OVERTEMP FAULT AMPLIFIER INTERLOCK FREQ GEN/U/C INTERLOCK SPARE (VISUAL MUTE) /CS3 SPARE (EXT ALC I/P) EXT P.S. STATUS (AMP) I/P DB0 DB1 DB2 DB3 DB4 DB5 DB7 DB6 P.S. GOOD S4 /CS2 S3 S5 R/W S2 S1 S2 S1 /CS5 /CS4 AURAL/VISUAL MUTE EXT O/P AMP MOD STATUS O/P AMP STATUS BUF D3 D6 D0 D7 D4 D2 D1 D0 D4D3 D6 D1 /CS0 D4 D5 D2 D6 MUTE FROM IF PROCESSOR D7 D5 D5 D0 D0 D1 D3 D6 UNLOCK MUTE D4 D2 D4 D5 D4 D1 D1 D7 D7 D2 D5 D6 D5 D0 D7 D4 D3 D3 D3 D6 EXT IF PRESENT D0 VIDEO LOSS D0 D4 /CS1 D1 D7 D4 D3 D3 D1 D2 D2 D5 D5 D1 D7 D3 D6 D6 INPUT FAULT D0 PEAK VS AVG FAULT D0 D1 D7 D2 D2 IF PROCESSOR INTERLOCK D2 D5 D7 D6 D0 D1 D2 D3 D4 D5 D7 D6 D0 D1 D3 D2 D6 D7 D5 D4 D0 D1 D3 D2 D6 D7 D5 D4 /DS /DS /CS6 /CS7 /CS8 LOGIC ENABLE DATA CLOCK -5V POWER IND MUTE TO IF PROCESSOR MUTE TO IF PROCESSOR /CS0 /CS1 /CS2 /CS5 /CS4 /CS3 R/W /CS7 /CS8 /CS6 /DS /DS R/W D[0..7] /CS9 /CS[0..9] EXT P.S. STATUS (AMP) I/P EXT OVERTEMP (AMP) I/P EXT OVERTEMP (AMP) I/P OPERATE CMD (RCVR) MODULATOR INTERLOCK MODULATOR INTERLOCK OPERATE CMD (RCVR) RMT XMTR OPERATE CMD I/P A2 A5 A4 A3 A2 A3 A5 A1 A1 A2 A0 A3 A5 A4 A4 A0 A[0..5] A1 A3 A1 A4 A5 A2 A0 LCD R/W LCD R/W LCD RS P.S. ENABLEP.S. ENABLE LCD RS -5V BIAS SENSE SPARE ANALOG I/P RMT FWD PWR O/P REFL PWR METERING EXT REFL PWR (AMP) I/P RMT REFL PWR O/P ALC CONDITIONING ALC VOLTAGE AFC VOLTAGE OUTER LOOP MON FWD PWR METERING AN[0..7] PLMB -5V POWER IND Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q13 Q14 Q15 Q16 Q17 U15A LCD E EXT REF PRESENT (FA) EXT OPERATE CMD OPERATE IND XMTR INTERLOCK XMTR INTERLOCK RTN FAULT CATHODE OPERATE CATHODE RMT OPERATE IND O/P AMP MOD STATUS RMT XMTR FAULT IND IF PRESENT STATUS O/P RMT PLL LOCKED IND O/P RMT XMTR OVERTEMP IND P.S. FAULT IND EXT PLL REF PRESENT U4A +5V +5V +5V +5V +5V +5V +12V -12V +5V +5V +5V +12V +5V +5V+5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V +5V+5V +5V +5V R8 10K R7 10K R10 10K R6 10K R14 5K CW 3 2 1 R1 220 R12 10K R5 10K R4 10K R2 220 R9 10K R11 10K + C12 47 20V + C11 47 20V J1A 913289 1A 2A 3A 4A 5A 6A 7A 8A 9A 10A 11A 12A 13A 14A 15A 16A 17A 18A 19A 20A 21A 22A 23A 24A 25A 26A 27A 28A 29A 30A 31A 32A C3 .1 SW1 5 4 6 7 8 1 2 3 9 10 11 12 13 14 15 16 U10 MC7805CT I 1 G 2 O 3 + C10 47 20V J1C 913289 1C 2C 3C 4C 5C 6C 7C 8C 9C 10C 11C 12C 13C 14C 15C 16C 17C 18C 19C 20C 21C 22C 23C 24C 25C 26C 27C 28C 29C 30C 31C 32C R30 10K R31 10K R20 10K R22 10K R19 10K R29 10K C6 .1 R21 10K R28 10K R137 100/1W R136 100/1W R135 100/1W J3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 C16 .47 Y1 3.68640-MHz C19 24pF C21 24pF R67 10M SW2 WT15L2SV-1QE 1 2 3 C22 .47 C23 .01 R73 10K R74 10K Q18 BS170 DS1 5300H5 GREEN R75 220 U17 MC68HC705B16CFN VHR 8 PD4/AN4 9 VDD 10 PD3/AN3 11 PD2/AN2 12 PD1/AN1 13 PD0/AN0 14 VPP6 15 OSC1 16 OSC2 17 RESET 18 IRQ 19 PLMA 20 PL MB 21 TCPA1 22 TACP2 23 PA7 24 PA6 25 PA5 26 PA4 27 PA3 28 PA2 29 PA1 30 PA0 31 PB7 32 PB6 33 PC3 46 PC4 45 PC5 44 PC6 43 PC7 42 VSS 41 VPP1 40 PB0 39 PB1 38 PB2 37 PB3 36 PB4 35 PB5 34 PC2/ECLK 47 PC1 48 PC0 49 RDI 50 SCL K 51 TD O 52 TCMP2 1 TCMP1 2 PD7/AN 7 3 PD6/A N6 4 PD5/AN 5 5 N.C. 6 VRL 7 U14 DS3696N 1 2 3 45 6 7 8 C14 .1 U13 OPTO ISOLATOR 1 2 3 4 5 6 R57 220 C2 .1 R60 10K R62 10K R61 10K R41 10K R34 10K R37 10K R53 10K C13 .1 R59 10K R40 10K R54 10K R55 10K R35 10K R36 10K R52 10K C8 .1 R42 10K R15 10K C5 .1 R18 10K R17 10K R16 10K R134 10K J6 1 2 3 J7 1 2 3 J8 1 2 3 R131 10K R132 10K R133 10K R27 10K R58 10K R66 10K C17 .1 R72 10K R63 10K R69 10K R70 10K R65 10K R64 10K R71 10K R68 10K C1 .1 C7 .1 C9 .1 R3 15K Q2 BS170 R13 15K Q1 BS170 C15 .1 C20 .1 J1B 913289 1B 2B 3B 4B 5B 6B 7B 8B 9B 10B 11B 12B 13B 14B 15B 16B 17B 18B 19B 20B 21B 22B 23B 24B 25B 26B 27B 28B 29B 30B 31B 32B R138 10K + C4 47 20V C43 .1 R56 10K U4B MC74HC00ADR2 5 6 4 U5D MC74HC04N 98 7 14 U5E MC74HC04N 1110 7 14 U5F MC74HC04N 1312 7 14 U15B MC74HC04N 34 7 14 U16 MC74HC138A A0 1 A1 2 A2 3 CS2 4 CS3 5 CS1 6 Vcc 16 GND 8 Y7 7 Y6 9 Y5 10 Y4 11 Y3 12 Y2 13 Y1 14 Y0 15 U19 MC74HC138A A0 1 A1 2 A2 3 CS2 4 CS3 5 CS1 6 Vcc 16 GND 8 Y7 7 Y6 9 Y5 10 Y4 11 Y3 12 Y2 13 Y1 14 Y0 15 U1 SN74H377DW G 1 Q0 2 D0 3 D1 4 Q1 5 Q2 6 D2 7 D3 8 Q3 9 GND 10 CLK 11 Q4 12 D4 13 D5 14 Q5 15 Q6 16 D6 17 D7 18 Q7 19 VCC 20 U8 SN74H377DW G 1 Q0 2 D0 3 D1 4 Q1 5 Q2 6 D2 7 D3 8 Q3 9 GND 10 CLK 11 Q4 12 D4 13 D5 14 Q5 15 Q6 16 D6 17 D7 18 Q7 19 VCC 20 U11…

Text truncated - open the document above for the full version.

17 17 16 16 15 15 14 14 13 13 12 12 11 11 10 10 9 9 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 KK JJ II HH GG FF EE DD CC BB AA 1 UNIT > 1 UNIT TEST INPUT ----- ----- 1585-3130 2 SCH., TRANSMITTER CONTROL MONITORING BOARD TMY 12/19/97 D2 OF 2 LJ LJ 1/7/98 1/7/98 ITS CORPORATION REVECNDATEAPV TITLE THIS PRINT IS THE PROPERTY OF ITS CORP IT SHALL NOT BE COPIED WITHOUT PERMISSION MATERIAL FINISH DWN CHK REL SCALESHEET REV RE V EC N DATE AP V DWG. NO. --- AN1 AN7 AN5 AN4 AN3 AN6 AN0 AN2 AN[0..7] Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q13 Q14 Q15 Q16 Q17 U15A U4A RMT FWD PWR O/P FWD PWR METERING REFL PWR METERING RMT REFL PWR O/P OUTER LOOP MON EXT REFL PWR (AMP) I/P AFC VOLTAGE ALC VOLTAGE SPARE ANALOG I/P -5V BIAS SENSE -5V POWER IND PLMB ALC CONDITIONING AN[0..7] EXT REF PRESENT (FA) EXT OPERATE CMD OPERATE IND XMTR INTERLOCK XMTR INTERLOCK RTN FAULT CATHODE OPERATE CATHODE RMT OPERATE IND O/P AMP MOD STATUS RMT XMTR FAULT IND IF PRESENT STATUS O/P RMT PLL LOCKED IND O/P RMT XMTR OVERTEMP IND P.S. FAULT IND EXT PLL REF PRESENT LCD E +5V +5V -12V +12V -12V +12V -12V +12V +5V+12V -12V +5V +5V -12V +5V +5V +5V +5V +5V +5V +5V R23 15K R24 15K R25 15K R26 15K R32 15K R33 15K R43 15K R44 15K R45 15K R46 15K R50 15K R51 15K R48 15K R49 15K Q6 BS170 Q15 BS170 Q16 BS170 Q17 BS170 J2 1 2 3 W1 C44 .1 C18 .1 + - U20D TLO74 + - 12 13 14 11 4 R82 1M R83 1K + - …

Text truncated - open the document above for the full version.