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EFJohnson 761X Speaker User Manual

Contents

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2. C11 2p L LAS82 L H only LA 382 L H ANTENNA we 014 1367 TX 7 9V aA ual 1640 1p Other LA2S2 Other vo DM y AM E vec 2
3. DET AFOUT NWC vo NW sw lt sw R8V R8V VW HV 512 013 FH v D10 D9 D8 D7 D3 D4 D5 FOR IC6C D P RF TX RX F je mw K on ar k ee E MCF BPF BPF ANP BPF BPF KA ip LPF KHP LPF To AMP sw gt sw LA Q2 REV Ico IC4A 1012 B 05 Ble 46 35MHz 5V NW REV T4 2 Ti 0 0 d be 5 Y Q22 Y D1 J2 H G RFATT SJ RF T APC SHIFT lt 5V DET _ AF sw K amp MUTE BEEP js Q33 Qi AFO Q4 v AMP ki Spurr LVIN 2nd u T8V T8V vec HV 7777 AFATT Lo ac AFON IC7B 7N CTRL IC4B D18 D19 017 NOIS SD Q23 D20 D34 TX RX DRIVE PWR Q18 sw AMP AMP MICOUT i RX 1 5 T4 vco ZN 021 020 019 5V 6 o 8V 8V APCV 0 ola IC7A
4. 3 7 5 Tone Calling Features 3 7 Wide Narrow Band Select 3 7 CHANNEL 5 3 7 Introductionis ece emi E e 3 7 3 7 Priority Channel Sampling 3 8 PROGRAMMING GENERAL 4 1 Programming 4 1 Programming 4 1 Programming Software 4 1 STARTING THE PROGRAM 4 2 SPECIAL KEYS AND FUNCTIONS 4 2 MENU FLOW 4 2 Introduction 4 2 File Menu uya su aa B88 ha Rep 4 2 Screen Mente sso SU NANAY 4 3 Program 4 3 Print MENU ios see saa 4 3 Model Menu 4 3 Setup MEN ie e wes bbe de RE SEES 4 4 4 5 4 6 51 5 2 5 3 5 4 5B 5 5 5 6 5 7 TABLE OF CONTENTS CONT D UNIQUE PMR EUROPEAN SCREENS 4 15 General PS 4 15 Unique PMR Screens CLONING PROGRAMMING ONE TRANSCEIVER WITH ANOTHER 4 16 VHF 7610 CIRCUIT DESCRIPTION VHF RECEIVER CIRCUIT 5 1 Antenna Switching Circuit 5 1 RF Cireuit oi ua lv ba ee 5 1 First Mixer And First IF Circuits 5 1 Second IF and Demodulator Circuits 5 1 Audio Amplifier 5 2 Receiver Mute Circuit
5. 5 2 VHF TRANSMITTER CIRCUIT 5 3 Microphone Amplifier Circuit 5 3 Modulation 5 3 Transmit Driver 5 3 Power Amplifier Module 5 3 APC Circuit 5 4 VHF PLL CIRCUIT 5 4 PLL Circuit RERO 5 4 VGO GIG oes es kapay qaa Ada 5 5 VHF IC PIN DESCRIPTIONS 5 5 VHF Power Supply 5 5 CPU Port 5 5 VHF I O Expander 5 Main Unit 5 6 VHF Port Expander IC11 Main Unit 5 6 UHF 7640 CIRCUIT DESCRIPTION UHF RECEIVER CIRCUIT 5 7 Antenna Switching Circuit 5 7 ircuit o as a Aus ALA 5 7 First Mixer And First IF Circuits 5 7 Second IF and Demodulator Circuits 5 7 Audio Amplifier 5 8 Receiver Mute Circuit 5 8 TRANSMITTER CIRCUIT 5 9 Microphone Amplifier Circuit 5 9 Modulation 5 9 Transmit Driver 5 9 Power Amplifier Module 5 9 APG Circuits 5 10 PLL CIRCUIT 5 10 PPL Circuit s k y MANING NANA 5 10 VCO Circuit tex iE 5 11 Power Supply 5 11 UHF CPU 1 Port Allocation
6. s o o OPTI 910 AFour 1 5V 37 Qo SIG OUT 8 0 23 SIGOUT HA AO Mic 39 NG 7 24 RXMUT C238 040 R257 237 t o 102 25 144 4 1 BUSY 6 09 125 H zm 4 M F to Front unit AD 2 DACH 2 3 ra MIC IN 4 9 9 27 MIMUT mu 82 88 Did ied k shea MIC OUT H 100k Note MEASUREMENT CONDITIONS 30 GND ML 4 T ML 4 INTERNAL RESISTANCE 50kO V bgal gal NI esl gzl zl og BLMPMAMLtand a Mend NOTE 7640 Models are the LMR U S A type INTERNAL RESISTANCES a 4444 44444 444 OST OST SST 3 IC F410 PMR f 455 1MHz TX POWER 25W pila MR H band VOLTAGES INDICATED WITH MARK ARE CHANGED WITH THE FREGUENCY AND POWER 8 9 n G0 1700000 UHF 7640 MAIN BOARD SCHEMATIC J1 To Microphone VHF UHF FRONT UNIT BOARD TOP VIEW R52 R53 1 75 E L3 R14 C12 L 50 lt R42 zl E m Hg Es 0 2 R70 49 C59 R71 C57 C58 C52 J2 To Main Unit Le AS 6 IS SE 21 0 8 6140 LLdO 62 AdO Ze Sc LdAO 62 lid VHF UHF FRONT UNIT BOARD BOTTOM VIEW A8 Ov NGNd0 8 9 INIdO FE 5080 c ASn8 06 1 82 ANOL 92 9338 5010 22 LLV4U 0
7. 490 050 007N DTCS Alternate 1 If the transceiver operates on only narrow or wide band channels program only channels 1 5 and program them for the type of channels used narrow or wide band If the transceiver operates on both wide and narrow band channels program additional channels 6 and 7 for the other type of operation 6 1 4 COMPUTER AIDED TUNING To make most adjustments described in the fol lowing information the computer setup used for pro gramming see Section 4 and special Adjust software are required The Adjust software is included on the disk with the programming software in a separate sub directory called ADJ To set up the transceiver for use with this equipment proceed as follows 1 Copy the Adjust software to the hard disk or a pro gramming disk as described in Section 4 1 3 2 Turn transceiver power on and connect the com puter to the transceiver microphone jack using the programming cable and fabricated test cable described in the preceding section see Figure 6 1 6 3 3 Start the computer in the DOS mode Make the cur rent directory the ADJ subdirectory and start the program by typing the following ADJUST X Y X A VHF normal crystal B UHF TCXO 1 Serial port 1 2 Serial port 2 For example if tuning a VHF transceiver and the programming cable is connected to serial port 2 of the computer type ADJUST A 2 ENTER 4 The tune data in the c
8. 5 11 I O Expander IC12 Main Unit 5 12 UHF Port Expander IC13 Main Unit 5 12 6 1 6 2 6 4 6 5 6 6 6 7 6 8 ADJUSTMENT PROCEDURE GENERAL 6 1 Suggested Test Equipment 6 1 Test Channels 6 2 Test sure ina RO tine OR Na 6 2 Computer Aided 6 3 Reprogramming if EEPROM is Replaced Error Occurs 6 4 PRELIMINARY SETUP 6 4 PLL ADJUSTMENT MODELS 6 4 TRANSMITTER ADJUSTMENTS VHF 5 6 4 Reference Frequency 6 4 Output Power Adjust 6 5 FM Deviation Adjust 6 5 DTCS Waveform 6 6 RECEIVER ADJUSTMENTS VHF MODELS 6 6 Bandpass Filter Adjust 6 6 Squelch Adjust 6 6 Beep Tone 6 7 PLL ADJUSTMENT MODELS 6 8 TRANSMITTER ADJUSTMENTS 5 6 8 Reference Frequency 6 8 Output Power Adjust 6 8 FM Deviation Adjust 6 8 DTCS Waveform 6 9 RECEIVER ADJUSTMENTS MODELS 6 10 Bandpass Filter Adjust
9. 28 z 5 a 1 1000 taya 8 4 3 _ es wi 1000 1000 ro i t 100 0 60 12 8 12 5 lt 00 ost E s OSENAH 08 5020 giu ayay 3 929 R HH m pozo i E 9 H 88 w H z 1000 10070 10070 AW lt 1819 TE 8 O nst Set 49 S oza vL 1 1 t 8 5 Pd unaze e T HHMH w w 1 OSnAM pueqiijdoot Lw Je t x pueq 1 doz t 2808VIA 001 88 ait i oed T hd 5 T Na 0L pueq H dg 28 282 2810 89 0L LER 4 as 1 D 68 2825 00 02 4 ES a 001 1000 2 1 LTO 5 4001 asc Tw HUEE w gt ser Kal o I TOR ES TL A M 2 g m oon we 3 3 NOO HwpaLOz392IN 188 49 aa 28 88 e veld SeH Gwar pw 38 YA Bi 7 82 mE 4 1000 1000 999 MW 1 5220 e 58T uo kila Ars e gt e S 81000 FI Gace 8 28 e820 1000 20 I miro art B8 E 1 Q R ES 43 rupe 027 N89 815 ss A 518 I als BG t AW H ng x LAW C uic as 5858 2 4 ing T sua TO i00 8 Pe 12 ngg m lt E 85 0009999999 9 555 S819 Hiro 87 gt
10. MICMUTE AFONOP J2 To Spkr BEEPOUT TMUT R187 R189 af gt NA RON 8116 CT RXMUTE gt SPGND R188 H TPE cya DET 1 SP ras C 2 8135 NC 209 8125 1340161 R139 11 8110 C150 R123 W9 CI 12 GND H Co a3 L30 pe 13 DD tiba 14 2 151 1 92557 0154 1360 5 C289 gt C152 aU C163 C164 C183 J5 To Opt Cable 11 C207 cere 1 C178 N c234 R96 R97 022 R95 R96 coas 0238 R208 Diss US 8213 J5 0287 8214 LJ M C334 BEEPOUT abet R217 Co TONE d os P HU CJ 2B DTCS J os o Lg RFATT C241 p218 2 m 40 m NOIS 39 R36 UNLK ease 1 15 R238 0274 C268 E k4 EXST 30 16 X R248 N Mb DAST PLST s soll Ja Y D C239 mois moi 0264 c262 Gsi e R237 R2gg 0273 0271 November 1998 UHF 7640 MAIN BOARD TOP VIEW Part No 001 7600 001 8 8
11. 1 39 gs f1 15 m kel 30 16 C200 0000000000000000000 C224 CONTMANTOMDROMTMALTORN LO LO LO IO LO sr s xr NANAY NATA NAN NA VHF 7610 MAIN BOARD VIEW R251 027500 C274 J c273 C272 J C274J CHASSIS MP6 ki e 19 8 a 8 i 60 x 82 N N 8 ty R238 C281 C76 R245 X2 X November 1998 Part No 001 7600 001 C46 R29 R141L 1 C181 CI C180 J R142L 1 R143 CI C179 J C178 CI R144 J 1767 Antenna Jack eo 9 BLISS 8 55 CJ 000 32803 20080500080 21 dob 8 8 HERE e R70 x S LJ 88 L3 c118 i Ooi 8 R82 124 O F12 e cne D JR83 C117 ZEAREN ena 7884 C124 IC5 8 4 5 0 L18 T5 T5 SP1
12. 35W high 20W low 1 3 5W low 2 70 dB 46 dB at 25 kHz 40 dB at 12 5 kHz 12 5 kHz 11KOF3E 25 kHz 16 Less than 5 at 1 kHz with 40 modulation 2 8 dB at 6 dB per octave pre emphasis Any spread within the band 50 ohms 20 TIA November 1998 1 5 Part No 001 7600 001 GENERAL INFORMATION NOTES November 1998 Part No 001 7600 001 1 6 INSTALLATION AND DISASSEMBLY SECTION 2 INSTALLATION AND DISASSEMBLY Optional Accessory Cable PN 585 7600 027 External Spkr Jack UHF Type Ant Jack DB 9 Female 10 Ft Power Cable Black Optional External Speaker PN 250 0151 010 Figure 2 1 21 GENERAL 2 1 1 SCOPE OF INSTRUCTIONS Since each installation is somewhat unique the following installation instructions are intended only as a general guide to installing this transceiver 2 1 2 PERFORMANCE TESTS Although each transceiver is carefully tested at the factory before shipment it is good practice to ver ify proper operation before it is placed in service Important checks are receiver sensitivity and transmit ter frequency deviation and power output 2 1 3 TRANSCEIVER PROGRAMMING The transceiver needs to be programmed before it is placed in service Programming instructions are located in Section 4 Transceivers normally contain 20A Fuses Installation Components factory test channels and other test parameters when they are shipped The included labe
13. 7 M TI MP1 C 2222 MP7 C J1 ft 5 MP10 M FRONT UNIT MP11 C EP2 F MP8 M WS1 C C DB MP7 4 MP4 C MP7 C Unit abbreviations F FRONT UNIT M MAIN UNIT C CHASSIS PARTS UHF 7640 EXPLODED VIEW November 1998 FOLDOUT VHF Exploded View Part No 001 7600 001 7 22 SECTION 8 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS lt COMMON LINE lt LINE lt RXLINE 46 DATA BUS LINE MAIN UNIT 5V P 010 5V vec FWD 5v Ln xt x2 Y T5 T5 T 2 I 3 REF PLL gt LOOP SI vco TWRX DRIV R Hy NWC osc Ic FIL sw 4 Q6 Q4 Q3 Q2 Q1 IC1 s 6 T gt 4 Q7 08 15 AID jca 60 061 05 06 REV 03 04 L1 L2 L3 REF REF BAL K L14 D13 D14 AF gt gt sc iy L17 L18 DISC PLST vec DTCS BAL R5 x3 UNLK Y Y 8 BPF 2nd Lo APC RF il CTRL DET FM DET BPF pastes 1St LO 6 D1 D2 26127 917 18 IT Ic3 A T4 5V L22 L21 R5 NOIS R5 R5 020 021 D L20 D17 L19 D16 XTAL BPF BPF BPF ATT CERAMIC FI3 Fl4 lt d 5 Q14 913 18 019 T4 T3 Ta Ti RF ATT
14. A L NWC MOI gt AFO 5V 5V 5V 5V N Ie 5 5V T5 5V IC4a AMP LIMIT BUFE LPF 9 o BUFF AE EX SP IC4c NG DET IC7b ca ball IC6b raba me 5 ANUT N T lg AMUT AFHPF NWC B 5V E 5 AFON r gt 1 FAN Mic 8 IC7d MICOUT 4 IC4b MICIN MMUT so SCK EXST EXEN ows cpus FRONT UNIT RESET Di EEPROM CPUS 102 01 IC3 RMUT b Dog 5 3 5 lt CTRL 5 D 959209 2 2 REG W7 E 026 2 Ico ND OPV1 15 16 SCK REG LCD 2 14 17 si N a28 L 029 030 COM1 COM3 OPT3 5 CENT WON OPT2 R5 opts OPT3 11 20 5 lt sw lt SEG1 SEG32 Obs J2 OPT2 10 21 REM Th Oba av 40 ee sv OPTI 9 2 AFOUT 027 CPUSV _ 38 5 987 In
15. N v D Priority Channel Select Receive Attenuate e U gt 2 gt Scan Select Scan List Programming Talk Around Select 2 Tone 5 Tone Calling Wide Narrow Band Select 2 Table 3 1 sheet of labels is included with the trans ceiver and the applicable label should be placed on the key to indicate its function Refer to the section listed in the table for a description of the function 3 5 2 BACKLIGHT ON OFF Refer to Section 3 3 9 3 5 3 BANK SELECT Refer to Section 3 3 7 3 5 4 BEEP ON OFF Refer to Section 3 3 10 November 1998 Part No 001 7600 001 OPERATION 3 5 5 CALL GUARD TONE SELECT If the transceiver has a key the Call Guard CTCSS tone can be selected This allows calls to be placed to different mobiles or groups of mobiles and received on different groups than is normal for the channel Proceed as follows 1 Press the key and TON x is displayed 2 Press the channel up down A w keys to select the desired tone TON 1 to 9 3 Press the key again to exit this mode Calls are then placed on the current channel and other channels using the new code until it is changed 4 To reselect the standard Call Guard squelch tone programmed for the channel select TON M using the same procedure 3 5 6 CHANNEL SELECT Refer to Section 3 3 5 3 5 7 DTMF NUMBER SELECT If the transceiver has DTMF key
16. SIGOUT 8 23 DET R5C 5v GND 36 obs s MOWN nl 7 24 RXMUT OPINT 34 5 Bs BUSY 6 25 BEEPOUT BACK DIM OPCS 32 B1 2 5 E AFONOP HV lt lt DIM A BUSY 30 09 OPT1 NG 7 2 MICMUTE lt REG sw Joz TIN CPU Ha BEEPOUT 28 o 27 MICOUT 3 28 HV Stik 26 gs ova 2 29 5V DW N BEEP __ 24 oks P 1 30 GND AFCHUID EtC _ red Drosin 22 ev xs ayat RFATT 20 o 0 9 PTN NOIS 18 17 DET OPT Di Kroes SON UNIK 16 PWON NT EXEN 14 13 EXPTT HV J33 SW2 SW9 KS0 KS1 RFATT gt Fa wap NOIS EXST 12 6 DMN HV pa UNEK DAST 10 5 so lt DIMIN DIM DIM PLST 8 7 SCK sw HORN BET I 9 250 1 2 5V 932 o HORNO ro POSW x DIMIN 4 to o ES CPUSV 3 o 4 AFO gt ane AFO Io St 5 so GND 515 ofS s AFO 5 LVIN 7 50 8 0P13 gt 952 DET 5 o Be d me we TEMP to MAIN opcs 9 52210 2 DET Sre B VIN HA BUSY 11 6 2 i 5 BEEPOUT 13 5 lt Sw t O TONE 15 5 ole 2 4 T ___17 LPF DET 0105 195220 lt m 21 6 gba PTTIN 5 NOIS _ 23 ba CLONE Q oo VF unik _ 25 o 06 PWON Di D A gt DTCSIN EXEN 2716 obs EXPTT MIC Q4 Eo TETAY EXST 2915 DIMIN Kid past 315092
17. EFJohnson Service Manual VHF 146 174 MHz 45 Watt 761 VHF Part No 242 7610 Oxx 764x UHF UHF 400 430 450 470 470 490 Conventional Mobile 490 512 MHz 35 Watts Part No 242 7640 0 First Printing November 1998 EFJohnson 761x VHF 764x UHF CONVENTIONAL FM TWO WAY RADIO VHF 146 174 MHz 45 Watts UHF 400 430 450 470 470 490 or 490 512 MHz 35 Watts Copyright 1998 by Transcrypt International Incorporated Transcrypt offers communication solutions in two core areas land mobile radio products and systems and information security EFJohnson land mobile radios and systems pro vides wireless communication for a variety of markets including government public safety and commercial users Transcrypt s information security devices utilize sophisticated scrambling and encryption techniques to protect sensitive voice and data transmissions Viking Head EFJohnson logo and Call Guard are registered trademarks of Transcrypt International Incorporated Smartrunk is a trademark of Smartrunk Systems Inc All other company and or product names used in this manual are trademarks and or regis tered trademarks of their respective manufacturer Information in this manual is subject to change without notice TABLE OF CONTENTS 1 GENERAL INFORMATION 11 SCOPE OF MANUAL 12 TRANSCEIVER DESCRIPTION General essen ee ent We RH ok 13 PRODUCT WARRANTY
18. AF signals X3 Discriminator 2nd IF filter 15 3 MHz IC3 TA31136FN 1st IF from the IF amplifier 014 NOIS signal to the CPU FRONT unit Figure 5 1 Second IF System IC3 VHF AF mute switch IC8 IC7b c AF signal C7a from IC3 RMUT ICS Volume control signal AF power IC6d amp AF mute IC6b switch Speaker RMUT o Figure 5 2 Audio Switching and Amplifier Circuit VHF are part of the quadrature detector The audio signal is fed out on pin 9 IC3 and applied to the AF amplifier circuit 5 1 5 AUDIO AMPLIFIER CIRCUIT The AF audio frequency amplifier circuit pro vides drive to the speaker a block diagram is shown in Figure 5 2 The audio signal from pin 9 is applied to AF amplifier IC7A and then fed to pin 1 of AF switching circuit IC4 The switched output signal on IC4 pin 2 is then applied to high pass filter IC8A B The cut off frequency of this filter is controlled by the line When is high the cut off frequency is shifted higher to attenuate the Call Guard CTCSS or DTCS signals The filtered output signal on IC8 pin 7 is applied to limiter IC7b and buffer IC7c De emphasis is pro November 1998 Part No 001 7600 001 vided by R145 and C182 The audio signal is then applied to pin 16 of level controller IC5 This device allows the CPU to control the speaker volume level The leve
19. SE 4p P MH L ML MH SC 1323 Other P ER n Wide 5 1V SS pa FH FL 287 mom o 98 W n 834 85 7 7 6p L L SC 1236 L L N t tl l Lo m ra PNarouov 77 aj Ta ur Rod R22 ony ata ms ast Other Sp L H SENSE ab C66 0 01 1 o0 2 77 NG 827 g S 10k 10k pomen L16 PALITAN sc 1326 C H m DTA144EU i 25 28 Wide 0 6V R cls T LA 242 Other 4p L MH Bl mt z FP 8 4 68 Narrow 0V Lud LA 232 P MH L T 3p L P ML P 5 R112 J o Qn C 5 9 C60 0 01 57 gs n 5p P MH 330k H7 ARE NARAIN mle 1p C H T TX4 7V 8p P MH other 13 6V R110 RX OV AFHPF RX 0V 7p Other P L NTCCF20124AH 47k pa 85 dpa 5 88 7 88T 34v a ais 255 SeT 88 r R107 100 Fis ok Pen aa 2581143 ze H BAN Cage n 5 C307 44 7 Q42 E el 25 cer Sess 8 a RPM DTC144EU as e DA TX9 1V s p Ig R104 22k C130 C129 FT 8 8 445 05 RX 0V L L1 E Ren 0 047 0047 88 77 DTAt44EU 77 117 R64 10 lt 24V I II R94 1 5k 18nH RX 13 3V 150k 2 24V NI R102 ng 1 017 NJM2902M 24v 1 55 aay S 25 4081 210
20. Volume Level Adjustment Power On Channel Selection 1998 Part No 001 7600 001 3 4 3 5 3 6 4 1 4 2 4 3 4 4 Adjusting Squelch 3 3 Bank Select n aS yi us 3 4 Automatic Scan Enable 3 4 Backlight 3 4 Beep 3 4 RECEIVING AND PLACING CALLS 3 4 Introduction 3 4 Receiving a Call 3 4 Placing eee Rem 3 4 Monitoring Before Transmitting 3 4 Time Out Timer 3 5 PROGRAMMABLE FUNCTIONS 3 5 Introd cton a NUNG sec 3 5 Backlight 3 5 Bank Select bue ERRORES 3 5 Beep On Off 3 5 Call Guard Tone Select 3 6 Channel 3 6 DTMF Number 3 6 Emergency 3 6 Lock Key Det 3 6 Monitor Mode Select 3 6 Output Power Select 3 6 Priority Channel Select 3 6 Receive Attenuate 3 6 SCAN Select pee eC 3 6 Scan List Programming 3 7 Talk Around 3 7 2 Tone Calling Features
21. 1 4 PART NUMBER BREAKDOWN 15 TRANSCEIVER IDENTIFICATION 1 6 ACCESSORIES 1 7 FACTORY CUSTOMER SERVICE 18 FACTORY RETURNS 1 9 REPLACEMENT PARTS 1 10 INTERNET HOME 2 INSTALLATION AND DISASSEMBLY 24 GENERAL Scope of Instructions Performance Transceiver Programming Power Source 2 2 TRANSCEIVER INSTALLATION Selecting Mounting Location Installing Mounting Bracket Installing Microphone Hanger 23 POWER CABLE INSTALLATION General elg A NG Cable Installation Power Cable Fuses 24 USING AN EXTERNAL SPEAKER 25 ACCESSORY CABLE INSTALLATION 2 6 TRANSCEIVER DISASSEMBLY 27 2 TONE 5 TONE MODULE INSTALLATION Installation 2 Programming 5 Tone Programming 3 OPERATION 31 FEATURES 3 2 CONTROLS AND DISPLAY Front Panel Display CN ERR Back Panel c bas prey d 33 BASIC OPERATION Turning Power On and Off Entering a Password
22. 58T DN 535 1 58 5 pueg H dooL 1000 82 8888 041 gi 1 pueg dozz 3 2120 ALES Te 1000 169 S u 159 59988 EN HAR 8 1 us R upg 22 mH z pueg 1 dg on 1 lt 1000 3 860 BAN ar p 1000 n 920 0 r wa 0120 1 tunes 8 83 HR rogi du 55 z gr dad 22 8 3 us ig Hp wk 35 1000 we HAH 6022 K5 2 88 0019 100 1 C dozy AI 2 6elH 820 T 98 AW AW RIO 1000 gE lan I t 001 8062 25 nes 8 100 o ei ag AWE 940 m a SG 3 020 4 5 58 2 Li 1 148 gt 100 9 285 m dozy NG Qe 2010 gt L T leo ES FR m I 3 Huge 1000 100 0 ie 010 AW lt gt 9 250 8 88 a EE I 35 2 3001 a m E N w Tee oe 2 s ly E 2 1000 gener diu 1010 T o8 lt tc 6620 5225 T AW IS pueg H dp ez 25 5 pueg 1 dg SE 1000 S019 E zz pueg H HNGL 2 1 pueg 1 Hrtz LO S SE vid 61 a Qugt Orid o Su ig S AW n AW 900 L T 2 SEM 0021 L Fa o a 90 100 Ha 1 MG 40 L hi veld 91H got 855 pH n 8 os gt 1000 05 S H
23. 7640 UHF Main Unit Res MCRIOEZHJ 100 ohm 104 022 3906 983 Res ERJ3GEYJ 1RO V 1 ohm Res ERJ3GEYJ 101 V 100 ohm Res MCRIOEZHJ 47 ohm 470 Res ERJ3GEYJ 101 V 100 ohm Res ERJ3GEYJ 101 V 100 ohm Res MCRIOEZHJ 47 ohm 470 Res MCR50JZHJ 220 ohm 221 Res MCR50JZHJ 220 ohm 221 Res ERJ3GEY J 472 V 4 7 ohm 022 3906 688 022 3906 143 022 3901 781 022 3906 143 022 3906 143 022 3901 781 022 3906 995 Res ERJ3GEYJ 224 V 220 k ohm 022 3906 178 Res ERJ3GEYJ 103 V 10 k ohm 022 3906 163 Res ERJ3GEY J 224 V 220 k ohm 022 3906 178 Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 473 V 47 k ohm Res ERJ3GEYJ 473 V 47 k ohm 022 3906 163 022 3906 171 022 3906 171 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEYJ 680 V 68 ohm Res ERJ3GEYJ 100 V 10 ohm Res ERJ3GEYJ 222 V 2 2 k ohm 022 3906 985 022 3906 138 022 3906 157 Res ERJ3GEYJ 224 V 220 k ohm 022 3906 178 Res ERJ3GEYJ 103 V 10 k ohm 022 3906 163 Res ERJ3GEYJ 224 V 220 k ohm 022 3906 178 Res ERJ3GEYJ 103 V 10 k ohm 022 3906 163 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEYJ 271 V 270 ohm Res ERJ3GEYJ 180 V 18 ohm Res ERJ3GEYJ 271 V 270 ohm Res ERJ3GEY 680 V 68 ohm Res ERJ3GEYJ 220 V 22 ohm Res ERJ3GEYJ 101 V 100 ohm Res ERJ3GEY 331 V 330 ohm Res ERJ3GEY 331 V 330 ohm 022 3906 147 022 3906 140 022 3906 147 022 3906 985 022 3906 685 022 3906 143 022 3906 389 022 3906 389
24. Res ERJ3GEYJ 124 V 120 k ohm 022 3906 176 Res ERJ3GEYJ 101 V 100 ohm Res ERJ3GEYJ 122 V 1 2 k ohm 022 3906 143 022 3906 390 Description Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 222 V 2 2 k ohm Res ERJ3GEYJ 471 V 470 ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 821 V 820 ohm Res ERJ3GEY 334 V 330 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEYJ 470 V 47 ohm Res ERJ3GEY 152 V 1 5 k ohm Res ERJ3GEYJ 153 V 15 k ohm Res ERJ3GEY 223 22 k ohm Res ERJ3GEY 123 V 12 k ohm Res ERJ3GEY 223 V 22 k ohm Res ERJ3GEYJ 153 V 15 k ohm Res MCRI0EZH 4 7 k ohm 472 Res MCRI0EZH 4 7 k ohm 472 Res MCRI0EZH 4 7 k ohm 472 Res MCRI0EZH 4 7 k ohm 472 Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 471 V 470 ohm Res ERJ3GEYJ 223 V 22 k ohm 490 512 MHz only Res ERJ3GEYJ 183 V 18 k ohm other bands Res ERJ3GEYJ 183 V 18 k ohm Res ERJ3GEYJ 105 V 1 M ohm Res ERJ3GEYJ 154 V 150 k ohm Res ERJ3GEYJ 683 V 68 k ohm Res ERJ3GEYJ 683 V 68 k ohm Res ERJ3GEYJ 472 V 4 7 k ohm Res ERJ3GEYJ 122 V 1 2 k ohm Res ERJ3GEYJ 151 V 150 ohm Res MCRIOEZHJ 2 2 ohm 282 Res MCRIOEZHJ 22 ohm 220 490 512 MHz only Res MCRIOEZHJ 33 ohm 330 other bands Res MCRIOEZHJ 27 ohm 270 490 512 MHz only Res MCRIOEZHJ 33 ohm 330 other bands Res ERJ3GEYJ 222 V 2 2 k ohm PARTS LIST 022 3906 171 022 3906 171 022
25. Telsiz mo E t AW w Elalalsle 32 a ESE alala WIT Q 3NOIX3 a 8 Mid 089 89 3 3081 Ko ajz ogy LEH of 6rlH 9810 4 a k lc jo 1000 ET pa 8 5 INOL Hw 270 F32 L OL TSS 001 100 ie 98H aig 3001 ao ass 3 1618 4 gt Hm s3 25 s tw oor 1000 675 s HD E 8 m 0619 4 pmm ex af 5 Hw cot 1 282 53 58 o T 4 z3 52 52 NG 8 I dit L Aw 6814 1 ZA ms 9210 tw i wo wees FEE osta HOW imp 1 Ter 1 1000 TON o 5 x os W 290 t 1 00 3 2819 os 8 8 Wi 9 A os W osennH 388 mig OS u 5 52 x a ug 06H Ns 2 1Sx3 AW AW k 8 1 z 1 8 5 NG 85 A ueg s 99 SAE aiai S 822 OST ot 595 oe a 7 tw FP wo Le 5888 We UST 25 ora em aso NMN acr I a a 3 HAH PH x LLYN rrt 219 1070 5 3 1 clik 1 59 1 264 64 ge 1 Sy T er ua 5 1610 85 Si SI loz z Era 8 100 ASI 1 jg L Lngd LL 8 s 5 amp jem 7 t t 8 0620 z cut _ 8 mo 1 AW 2 58 sz ML ki ez 83 wi 1000 1
26. div l 2629 yzy elz Srt El T a a 15 O di 3 100 Eos 2829 b sr S gt lH lt oo 5 8 5 8 alo ue Liam A O sp 88 ES a ET 8 zia 1070 sold aye 53 l sal 85 22 HR 4 serge te AW 25 1000 w 980 6 Xo I 1000 Pr gf o Ry FR 8 29 g 2 AW amp TSA H 5 gt E 5 TILL CAL 1 54 S my al gl 8 L gt 38553 E LAW 8 4 le2 85222 422222022222 TTA T 8 HE 88 26583337 o R oa a 88 SEX 18550 J 8383 dT pueq H Lo wi CUSA 554 de 5 2 155 5 n aa o E z Ble TW El 5 E Mk 28 ellla 2falzlile 2 Sly emm S 51818 S la gt l z ul 85 2 8 5 5 wie 21212 5 4 VHF 7610 MAIN BOARD SCHEMATIC November 1998 Part No 001 7600 001 8 5
27. 001 7600 001 ADJUSTMENT PROCEDURE VHF ADJUSTMENTS CONT D Select the low power channel in the middle of the band Test Ch 5 160 050 MHz On the computer screen scroll to MOD N if setting narrow band deviation or MOD W if setting wideband deviation Monitor the transmit deviation with a communica tions monitor set as follows HPF Off LPF 20 kHz De Emphasis Off Detector P P 2 Key the transmitter using the test cable switch and set the following maximum deviation by pressing the adjust keys PgUp PgDn or spacebar backspace Unkey the transmitter Wideband 30 kHz Models 4 2 kHz Narrow Band 12 5 kHz Models 2 1 kHz If the transceiver operates on both narrow and wide band channels select Test Ch 7 and also adjust the deviation on that channel see note in Table 6 1 6 4 4 DTCS WAVEFORM ADJUST 1 Select a channel in the middle of the band pro grammed for DTCS Test Ch 8 160 050 MHz On the computer screen scroll to DTCS N if setting a narrow band channel or DTCS W if setting a wideband channel Key the transmitter and view the demodulated sig nal on the CRT of a communications monitor Press the adjust keys on the computer so that the waveform appears as follows Qo lt t Set For Flat Waveform If the transceiver operates on both narrow and wide band channels select Test Ch 8 and also set the waveform on that channe
28. 026 o MIC LIMIT SUPRA AF AF gt MOD 7 sw 07 AMF AMP 2 TTER Sw sw 24 BUFF P BUFF LPF lt ec A IC8B T n 2 23 028 Q30 MMUT lt TXC 3 21 TX T2 c KC 016 Pg NW 10 m 22 veo Q25 D22 D33 lt lt gt 022 TONE sw NWC 9705007 521 CPusv 5 4 IC6B 11 14 REG W6 DTCS 035 ag gt REF MOD Ica 5V n Y lt SCK LOOP PLL c tur lt T BUFF HV POWER lt 1 sw 6 HORNO lt ond 034 ZN 029 so Lo 45V 014 lt E SCK SAN PPF 27 MAIN UNIT EXST 45 9MHz AFHPF lt d EXEN lt REF pasa ta K 15 3MHz REG Wwe a 50 en lt __ SCK 102 PLST 2 MM RM UNLK 88 E 010 FRONT UNIT VOLT ke voc EH 4 COMMON LINE DIMIN EXPTT LINE PWON lt DS2 DS11 RFATT PAY K 1 lt 4 RX LINE BACK tcp K LIGHT cra k TEMP CPUS Q8 KA DET 09 TMUT TX LINE D14 os 8 Bv DTCSIN icb lt SONY Kt M 1 if M 5V wv K lt DATA BUS LINE CTDAO CPU5V RMUT MMUT lt lt CPUSV 06 lt CTDA2 dh ara Z V 13 AF CH U D Etc RMUT BXMUT MMUT MIMUT SWITCH x8 GIRL CTRL Sus P D24 037 D25 046 h so 7777 OPINT J4 OPCS BUSY OPV1 15 16 SCK POSW OPT1 N OPV2 14 i7 SI 6 OPT2 OPV3 13 18 50 GND 12 19 OPINT HANG OPV1 OPT3 1i 20 5 SHV 7777 2 2 10 21
29. 2 2 2 INSTALLING MOUNTING BRACKET Check the area behind the intended mounting location for wiring brake and gas lines or other com ponents that could be damaged when the mounting screws are installed Then install the bracket and trans ceiver as shown in Figure 2 2 Both standard and self tapping screws are included for installing the bracket November 1998 Part No 001 7600 001 2 2 2 2 3 INSTALLING MICROPHONE HANGER Install the included microphone hanger in a con venient location For proper operation of functions such as monitoring and scanning the hanger may need to be connected to chassis ground If required ground the hanger using the included grounding wire 2 3 POWER CABLE INSTALLATION 2 3 1 GENERAL It is recommended that both wires of the power cable be connected directly to the vehicle battery Con nection of either wire to other points may result in increased interference from the vehicle s electrical system If noise is still a problem try installing a noise filter 2 3 2 CABLE INSTALLATION 1 Before starting power cable installation it is good practice to remove the negative cable from the bat tery to prevent damage from accidental short circuits 2 Route the red and black wires from the transceiver to the battery Connect the red wire to the positive terminal and the black wire to the negative terminal 3 Plug the cable into the pigtail coming from the trans ceiver and reconnect th
30. November 1998 Part No 001 7600 001 8 10 DS1 LD HU10140J FRONT UNIT MEASUREMENT CONDITIONS DIGITAL MULTIMETER 50kO VDC OSCILLOSCOPE 20 2 52 CTDAO 51 75 SEG20 54 CTDA2 53 CTDA1 o o P97 SEG40 P96 SEG39 P95 SEG38 P94 SEG37 P93 SEG36 P92 SEG35 P91 SEG34 P90 SEG33 P87 SEG32 P86 SEG31 P85 SEG30 P84 SEG29 P83 SEG28 P82 SEG27 P81 SEG26 P80 SEG25 P77 SEG24 P76 SEG23 P75 SEG22 P74 SEG21 P73 SEG20 P72 SEG19 P71 SEG18 P70 SEG17 P67 SEG16 N VCC P66 SEG15 PDO SEG41 P65 SEG14 PD1 SEG42 P64 SEG13 PD2 SEG43 P63 SEG12 PD3 SEG44 P62 SEG11 PD4 SEG45 P61 SEG10 PD5 SEG46 P60 SEG9 PD6 SEG47 P57 WKP7 SEG8 PD7 SEG48 P56 WKP6 SEG7 PE0 SEG49 M P55 WKP5 SEG6 PE1 SEG50 D0 P54 WKP4 SEG5 PE2 SEG51 CL2 P53 WKP3 SEG4 PE3 SEG52 CL1 HD6433875A63H P52 WKP2 SEG3 AVCC P51 WKP1 SEG2 TONEM P50 WKP0 SEG1 TONED 1 VTREF PA1 COM2 AVREF PA2 COM3 PB7 AN7 PA3 COM4 PB6 AN6 VCC PB5 AN5 V1 PB4 AN4 v2 PB3 AN3 V3 PB2 AN2 VSS PB1 AN1 P10 TMOW SEG25 SEG26 co ojo E o olo 9 m R59 1k AW R17 EXB V8V ka _ l W POSW P20 IRQ4 AOTRG P21 SCK1 P17 IRQ3 TMIF P16 IR
31. TW Diode MA77 TW Varicap HVU350TRF Varicap IT365 01 T8A Varicap HVU350TRF 7640 UHF Main Unit 022 3906 821 022 3906 331 Description Diode MA111 TX Diode DAN202U T107 Diode MA111 TX Diode MA111 TX Zener RD20E B2 Diode DAN202U T107 Diode MA111 TX Diode DAN202U T107 Diode MA111 TX Varicap HVU350TRF Varicap HVU350TRF Bead HF70BB4 5X5X1 6 Bead HF70BB9X5X4 5 Crystal FL 287 46 350 MHz Ceramic CFWM450E Ceramic CFWM450G TA31136EN D EL TA7808F TE16L AN78L05M E1 NJM2904M TI SC1236 400 430 MHz SC1237 450 470 MHz SC1325 470 490 MHz SC1326 490 512 MHz NJM2902M TI NJM2904M TI NJM2904M TI LA4425A uPD3140GS E1 DS8 BU4066BCF T1 M62363FP 650C BU4094BCF T1 Connector HSJ0807 01 010 Connector PI28A 02M Connector FH12 40S 0 5SV Connector AXN330C038P Connector B11B ZR SM3 TF Connector B2B ZR SM3 TF Coil LA 382 490 512 MHz only Coil LA 232 other bands PARTS LIST 022 3906 591 022 3906 302 022 3906 942 022 3906 943 022 3906 944 022 3906 945 022 3906 946 022 3906 947 022 3906 948 022 3906 749 022 3906 944 022 3906 944 022 3906 941 022 3906 835 022 3901 444 022 3906 843 022 3906 681 022 3906 834 022 3906 841 022 3906 952 022 3906 951 1998 Part 001 7600 001 PARTS LIST 7640 UHF Main Unit Description Description Coil LA 382 490 512 MHz only 2055 Filter cover A 022 3906 873 Coil LA 232 other bands 022 3906 9
32. at Sweep Enter at TXF REF Set Made Fo at TI 171 Upin dih sya Sueep TU NOTE The above values for various settings are examples only Because of component tolerances the optimum setting for each transceiver will probably be different Figure 6 2 Screen Display Example Programming Cable Pin 2 Clone pa Pin 4 PTT PTT To Transceiver To Computer Pin 7 Ground Pin 5 MICE Pin 6 MIC Figure 6 3 Test Cable Schematic 6 1 2 TEST CHANNELS software described in Section 4 There are no fixed test channels or test modes selectable with this transceiver NOTE Before programming the test channels down load the current programming data in the transceiver and save it to a disk file so that it can be reloaded after the adjustments are complete 6 1 3 TEST CABLE The test cable shown Figure 6 3 in must be fabri cated to perform transceiver alignment This cable is used in place of the adapter cable shown in Figure 4 1 Test channels at the low middle VHF only and high ends of the operating band and High Low1 and Low2 RF output power are required to perform the adjustments in this section These test channels are listed in Tables 6 1 and 6 2 and they must be pro grammed as regular channels using the programming November 1998 Part No 001 7600 001 It is required because in addition to connecting the computer to the micro
33. 1998 Part No 001 7600 001 PROGRAMMING Parameter Table 4 6 2 Tone Code Channel Screen Description Continued Description Emits or turns off the following beeps when receiving a matched 2 tone Null Beep emission or non emission is retained even when receiving a matched 2 tone Off Repeater beep emission is turned off Pi Single One high beep once PiPi Single Two high beeps once PiRo Single One high and one low beep three times Pi Repeat One high beep repeated at selected intervals PiPi Repeat Two high beeps repeated at selected intervals Auto Tx Sets the transceiver to the transmit condition by activating the microphone PTT when receiving a matched 2 tone code This transmit time can be set in the Auto Tx Timer parameter in the Rx Code Common screen see below When a matched 2 tone is received the transceiver is set to the following condition that is programmed Off The transceiver can be used continuously Kill The transceiver cannot be used Reprogramming is required to re activate the transceiver Stun The power on password prompt is displayed To use the transceiver the correct password must be entered See also User Password and Pwr On Password in Common screen Table 4 7 Password entry is required regardless of the Pwr On Password setting Parameter Notone Timer When a matched 2 tone is received scan is set to the following condition that is p
34. 1C 104KT N Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 471J T A Ceramic C1608 JB 1H 102K T A Tantalum ECST1AY225R Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1E 103K T A Ceramic C2012 JB 1A 105M T A Ceramic C1608 JB 1C 223K T A Ceramic C1608 JB 1E 103K T A Tantalum ECSTIAY225R Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 201J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Tantalum ECSTOJY 106R Ceramic C1608 JB 1E 103K T A Tantalum ECSTIAY225R Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1C 473K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A 022 3906 598 022 3906 063 022 3906 063 022 3906 063 022 3906 060 022 3906 063 022 3906 801 022 3906 079 022 3906 063 022 3906 626 022 3906 063 022 3906 614 022 3906 063 022 3906 063 022 3906 060 022 3906 802 022 3906 060 022 3906 063 02
35. 3906 157 022 3906 150 022 3906 175 022 3906 153 022 3906 141 022 3906 155 022 3906 165 022 3906 167 022 3906 164 022 3906 167 022 3906 165 022 3906 988 022 3906 988 022 3906 988 November 1998 Part No 001 7600 001 PARTS LIST Description Res ERJ3GEY 221 V 220 ohm Res ERJ3GEYJ 101 V 100 ohm Res ERJ3GEYJ 220 V 22 ohm Res ERJ3GEY 332 V 3 3 k ohm Res ERJ3GEYJ 152 V 1 5 k ohm Res ERJ3GEYJ 220 V 22 ohm Res ERJ3GEYJ 221 220 ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 272 V 2 7 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 152 V 1 5 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEYF 913 V 91 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 222 V 2 2 k ohm Res RR0816R 363 D 36 k ohm Res ERJ3EKF 4121V 4 12 k ohm Res ERJ3GEYJ 180 V 1 ohm 7640 UHF Main Unit 022 3906 143 022 3906 685 022 3906 159 022 3906 155 022 3906 685 022 3906 163 022 3906 154 022 3906 163 022 3906 155 022 3906 171 022 3906 997 022 3906 171 022 3906 171 022 3906 157 022 3906 984 022 3906 857 022 3906 688 Res ERJ3GEYJ 224 V 220 k ohm 022 3906 178 Res ERJ3GEYJ 223 V 22 k ohm Res ERJ3GEYJ 223 V 22 k ohm 022 3906 167 022 3906 167 Res ERJ3GEYJ 274 V 270 k ohm 022 3906 179 Res ERJ3GEYJ 101 V 100 ohm Res ERJ3GEYJ 123 V 12 k ohm Re
36. 3906 160 Description Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 102 V 1 k ohm Res RR0816R 304 D 300 k ohm Res RR0816R 104 D 100 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEYJ 105 V 1 M ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 222 V 2 2 k ohm Array EXB V8V 102JV Array EXB V8V 102JV Array EXB V8V 102JV Array EXB V8V 102JV Array EXB V8V 102JV Array EXB V8V 102JV Array EXB V8V 102JV Array EXB V8V 102JV Res ERJ3GEY 101 V 100 ohm Res MCRI8EZHJ 22 ohm 220 Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 333 V 33 k ohm Res 184 V 180 k ohm Res ERJ3GEY 684 V 680 k ohm Res ERJ3GEYJ 183 18 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 222 V 2 2 k ohm Res ERJ3GEY 474 V 470 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 183 V 18 k ohm Res ERJ3GEY 682 V 6 8 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 471 V 470 ohm Res MCRI8EZHJ 68 ohm 680 Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 561 V 560 ohm Res ERJ3GEY 473 V 47 k ohm Res RR0816R 334 D 330 k ohm Res ERJ3GEY 103 V 10 k ohm S Posistor PTH9C32BB471Q T PARTS LIST 022 3906 171 022 3906 154 022 3906 163 022 3906 160 022 3906 154 022 3906 866 022 3906
37. 4 Bell Indicator or flashes when 5 tone call is detected that the transceiver is programmed to receive November 1998 Part No 001 7600 001 Monitor Indicator Indicates that the monitor mode is enabled This mode disables coded squelch control so that all messages occurring on the channel are heard Refer Section 3 4 4 for more information Display This seven character display indicates the selected channel status information and error condi tions If information in this display begins flashing an error condition is indicated Two possible causes are a defective antenna or a battery voltage below 8 VDC 3 2 3 BACK PANEL External Speaker Jack Miniature phone jack for connecting an optional 4 8 ohm external speaker The internal speaker is automatically disabled when a speaker is plugged into this jack Antenna Jack UHF type jack for connecting the antenna DC Power Cable Connects the transceiver to a nom inal 12 VDC negative ground vehicle power source Refer to Section 2 1 for more information Accessory Cable This optional cable is used to con nect accessories such as a horn alert and modem to the transceiver Refer to Section 2 1 for more information Ext Speaker Jack Optional Accessory Cable Transceiver Back Panel 3 3 BASIC OPERATION 3 3 1 TURNING POWER ON AND OFF When power is turned on by pressing the POWER switch a tone sounds and an opening mes
38. 6 10 Squelch Adjust 6 10 Beep Tone 6 10 PARTS LIST VHF 761x Models Main Unit sosse reres ag RR 7 1 Front Unit y di o eena Tem ewe 7 18 Chassis PariS esso essa Rene 7 20 Exploded 7 21 UHF 764x Models Main Unit 7 8 Front Unit i4 edit needed Aedes 7 18 Chassis 7 20 Exploded View 7 22 1998 Part 001 7600 001 TABLE OF CONTENTS CONT D 8 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS VHF 761x Models Block Diagram Transistor and Diode Basing Main Unit Board Bottom View Main Unit Board Top View Main Unit Schematic Front Unit PC Front Unit Schematic UHF 764x Models Block Diagram Transistor and Diode Basing Main Unit Board Bottom View Main Unit Board Top View Main Unit Schematic Front Unit PC Front Unit Schematic LIST OF TABLES 1 1 75xx Accessories Option Key Programmable Functions 4 1 Memory Channel Screen Description LMR Models 42 Key and Display Assign Screen Description 43 DTMF Autod
39. C1608 CH ORSB T A Ceramic C1608 CH 1H 010B T A Ceramic C1608 UJ 1H 050C T A 400 430 470 490 MHz Ceramic C1608 UJ 1H 040C T A 450 470 490 512 MHz Ceramic C1608 CH 010B T A 470 490 MHz Ceramic C1608 CH 1H 3R5B T A 490 512 MHz Description Ceramic C1608 UJ IH 100D T A 400 430 MHz Ceramic C1608 UJ 1H 080D T A 450 470 MHz Ceramic C1608 UJ 1H 150J T A 470 490 MHz Ceramic C1608 UJ 1H 040C T A 490 512 MHz Ceramic C1608 CH 1H 050B T A 400 430 MHz Ceramic C1608 CH 1H 020B T A 450 470 MHz Ceramic C1608 CH 1H 080D T A 470 490 MHz Ceramic C1608 CH 1H 030B T A 490 512 MHz Ceramic C1608 CH 1H 080D T A 400 430 470 490 MHz Ceramic C1608 CH 1H 040B T A 450 470 MHz Ceramic C1608 CH 1H 030B T A 490 512 MHz Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 0R5B T A Ceramic C1608 JB 1H 471K T A Ceramic C1608 JB 1H 471K T A Ceramic C1608 CH 1H 120J T A Ceramic C1608 CH 1H 020B T A Ceramic C1608 CH 1H 070D T A Ceramic C1608 JB 1H 471K T A Ceramic C1608 CH 1H 060B T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 060B T A Ceramic C1608 CH 1H 060B T A Ceramic C1608 JB 1H 102K T A Electrolytic ECEV1CA100SR Ceramic C1608 CH 1H 120J T A Ceramic C1608 CH 050B T A Ceramic C1608 CH 1H 040B T A Ceramic C1608 CH IH 050B T A Ceramic C1608 CH 1H 120J T A Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1C 104KT N Tantalum ECST1CY225R C
40. Cf PWR ON Password Clone Comment 1 Acme Gravel Dealer Passcode 2 Mobile 1 Set Mode Access AF min Level SOL Level Transceiver Data Out Auto Reset Timer A Auto Reset Timer B Inactive Timer TOT Timer Penalty Timer ID Out DTMF Beep CTCSS Reverse Burst Parameter Description User Password Programs the password that must be entered at power on if the following PWR ON Password parameter is On or to cancel the STUN condition described in Table 4 6 Any four digit number from 0000 9999 can be programmed The password is entered as described in Section 3 3 2 Program Comment Allows a comment to be programmed in the file for use in quickly identifying the contents of a transceiver When a transceiver is connected to the computer the comment can be checked without reading all programmed data by selecting Information in the Program menu see Section 4 4 4 AF Min Level Sets the minimum audio level that can be selected by the user The level can be set in 32 steps with 0 the lowest level This setting can be overridden by pressing the F1 in the power on menu see Section 3 3 4 SQL Level Sets the squelch level in up to 255 steps O sets the maximum unsquelched level This adjustment can be more accurately made by pressing F4 in the power on menu see Section 3 3 4 Rx AF Switch This parameter can be used to disable the high pass filter that removes the Call Guard CTCSS DTCS signal
41. Ch 1 Connect an RF signal generator to the antenna jack Set the output for the channel frequency at a level of 3 2 u V 97 dBm modulated with 1 kHz at the following deviation Wideband 25 kHz Models 3 5 kHz Narrowband 12 5 kHz Models 1 75 kHz Adjust the filters automatically or manually as follows Automatic Adjustment Method 1 Adjusts all filters Select BPF T1 on the screen and adjust for O Repeat for T2 T4 Reselect BPF TI Press the F9 key and all filters are automatically adjusted for peak levels Automatic Adjustment Method 2 Adjusts only one filter at a time Select BPF T1 and press F8 to automatically adjust it for a peak level Repeat for the other three filters Manual Adjustment Connect a SINAD meter with a 4 ohm load to the external speaker jack see Figure 6 6 Select BPF 1 and press the adjust keys PgUp PgDn or spacebar backspace to obtain minimum distortion Repeat for the other three filters November 1998 Part No 001 7600 001 6 8 2 SQUELCH ADJUST NOTE The squelch level can also be set from the front panel as described in Section 3 3 6 1 Select the channel on the low end of the operating band Test Ch 2 channel with LB models and the 150 050 MHz channel with HB models Connect a SINAD meter with a 4 ohm load to the external speaker jack Connect an RF signal generator
42. Crystal CR 590 6 8015 MHz November 1998 Part No 001 7600 001 022 3906 171 022 3906 787 022 3906 185 022 3906 788 022 3906 789 7 20 Chassis Parts Description Connector MR DS E 01 2055 Chassis 2055 Front panel 2055 Front key 2055 Cover 2055 M Plate Rubber sheet AK 1 PH BT M3 X 8 NI ZU 2055 Speaker plate 2055 Speaker net 1 1126 TR A clip Sponge FL Rubber sheet AM Speaker VS 57 0837A PICH Description Connector MR DS E 01 2055 Chassis 2055 Cover 2055 Front panel 2055 Front key PH BT M3 X 8 NI ZU 2055 Speaker plate 2055 Speaker net 1 1126 TR A clip Rubber sheet AM Speaker VS 57 0837A PICH 7610 VHF CHASSIS PARTS 022 3906 750 022 3906 751 022 3906 755 022 3906 756 022 3906 757 022 3906 758 022 3906 759 022 3906 760 022 3906 761 022 3906 762 022 3906 752 022 3906 753 022 3906 754 022 3906 763 022 3906 764 Part No 7640 UHF CHASSIS PARTS 022 3906 750 022 3906 751 022 3906 757 022 3906 755 022 3906 756 022 3906 761 022 3906 762 022 3906 752 022 3906 754 022 3906 763 022 3906 764 MAIN UNIT Bottom side C 5 C EX pon W7 M MP12 M MP7 C MP4 C MP7 FRONT UNIT MP2 F MP3 C VHF 7610 EXPLODED VIEW November 1998 Part No 001 7600 001 7 21 MP13 11 lt so 12
43. D G s D E x F 4 m Jj IK 5 25 241 R TX 2SK272 2SK536 2SK880 GR DTA143ZU Symbol K Symbol BJ Symbol XG Symbol 113 D G2 D 1092 eL 8 5 H L so s D DTA144EU DTC114EU DTC144EU DTC144TU DTC363EK Symbol 16 Symbol 24 Symbol 26 Symbol 06 Symbol H27 XP4601 XP6501 Symbol 5C Symbol 5N November 1998 Part No 001 7600 001
44. Description Stop Timer When Mode 2 or 3 above is programmed priority scanning this sets how often in seconds the priority channel is checked while receiving a message on some other channel Resume Timer This sets the scan resume delay in seconds This is the time that elapses before scanning resumes after a message is received PWR ON Scan If this function is programmed On scanning starts automatically when transceiver power is turned on The Hanger Action parameter in Table 4 2 should also be programmed for Scan if power on scan is used If scanning halts to transmit a message the timer selected for Auto Reset parameter in the channel screen see Table 4 1 determines the delay before scanning resumes See also Scan A B function in Key Assign screen Table 4 2 Scan column in 2 Tone Code CH screen Table 4 6 Timer A B in Common screen Table 4 7 and Fast Slow Scan Timer in Expert screen Table 4 8 The parameter is displayed only in the PMR European mode and is used with the 5 tone option If On is programmed pressing the CALL key 1 starts scanning 2 detects a non busy channel and 3 transmits the 5 tone codes Table 4 6 2 Tone Code Channel Screen Description Auta TA nx Freq Hz let mi EB 3300 2 250 0 3358 2 2nd 250 0 3308 2 2nd Group Call Text Ball PNF EXO Beop Stun Scan 2nd GALLI ON CALL2 CALLS ON NOTE Option
45. ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 683 V 68 k ohm 022 3906 154 022 3906 162 022 3906 163 022 3906 163 022 3906 150 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 100 V 10 ohm Res ERJ3GEY 272 V 2 7 k ohm Res ERJ3GEYJ 101 V 100 ohm 022 3906 154 022 3906 163 022 3906 154 022 3906 138 022 3906 158 022 3906 143 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 560 V 56 ohm 022 3906 154 Res ERJ3GEYJ 474 V 470 k ohm 022 3906 181 Res ERJ3GEYJ 184 V 180 k ohm 022 3906 177 Res ERJ3GEYJ 224 V 220 k ohm 022 3906 178 Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 471 V 470 ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 103 V 10 k ohm 022 3906 163 022 3906 150 022 3906 163 022 3906 163 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 103 V 10 k ohm 022 3906 154 022 3906 163 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEYJ 105 V 1 M ohm 022 3906 184 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEYJ 105 V 1 M ohm 022 3906 184 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEY 105
46. REM OPV3 OPT1 9 22 038 SIGOUT 8 23 DET CPUSV RESET RES MDWN 7 24 RXMUT DIMIN DIM gt BUSY 6 25 ___ sw AUX 5 26 AFON Microphone IC2 Q1 D1 MICIN 4 27 MIGOUT 3 28 HV HANG HANGER CLIN PTT PTTOUT 2 295V 039 pj CLONE K PTTIN I B0 GND 6 4 PITIN VE CLOUT lt _HORNO HORN sw 8V Q4 D2 PTTIN lt 777 CLONE B M SHIFT 50 5V Em eh sw lt T SM 55 xi gt 2 N E Mic MIC Q40 DET ibe OPTION EE lt siGour SIG PROM sw 05 CONV TONE UT 96 Ica K BEEP UT 105 di MUTE a MISS lt 010 7640 BLOCK DIAGRAM November 1998 001 7600 001 C233 L3 82 CI C82 MP5 915 C302 Th C89 L cams ess 09 C344 R68 C16 C15 C297 C107 css c73 E L18 C103 CI R79 8 caza CLS cus R C88 mu 2101 020 wo r R273 108 R166 C19 o R81 _nQ21 ope LJ i LI RA Rz real ice R10 Lj R C20 p10 U oss gem rJ ES NEON 23 C194 0 C299 R169 cL a oe R174 ats pet Rio CJc193 CI 13812 feb C345 C341 C201 d C318 R167 ene 814 C218 c216 CJ 081 5165 R259 2137 034 Mi lo C292 625 C27 2859 Rue ou C207 ras R255 D23 C201 26 1 P Cal m R175 d 219 car C229 m an 015 sey c20 21
47. S UHF 7640 Diode Basing Diagrams 1 DIODES 155302 155352 17365 DA221 DAN202U Symbol C3 Symbol C1 Symbol pink line Symbol K Symbol N DAN204U Symbol K gt HVU350 Symbol 4 it 77 Symbol 48 111 Symbol 1B 713 Symbol MIN 8051 M TX Symbol 5 1 2581132 R 2SB1143 S 2SC4081 R 25 4215 O 2SC4703 SE Symbol BARB Symbol BR Symbol QO Symbol SE a B 25 5107 O 25 5110 O 2SD1664 Q 25144 GR 281377 Symbol MF Symbol MGO Symbol DA Symbol VG Symbol 4L
48. T A Ceramic C1608 CH 1H 220J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 272K T A Ceramic C1608 CH 1H 180J T A Ceramic C1608 CH 1H 120J T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1H 102K T A PARTS LIST 022 3906 065 022 3906 065 022 3906 065 022 3906 060 022 3901 393 022 3906 063 022 3906 063 022 3906 063 022 3906 060 November 1998 Part No 001 7600 001 PARTS LIST Description Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1C 104KT N Ceramic C3216 JB 1C 105M T A Electrolytic ECEVICA100SR Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1
49. T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 100D T A Ceramic C1608 JB 1H 472K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JF 1C 224Z T A Ceramic C1608 CH 1H 100D T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A 022 3906 598 022 3906 062 022 3906 600 022 3906 918 022 3906 598 022 3906 600 022 3906 600 Description Ceramic C1608 CH IH 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 471K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH IH 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Tantalum TEMSVB2 IV 225M 8L Ceramic C1608 CH 1H 070D T A except 490 512 MHz Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JF 1C 224Z T A Ceramic C1608 JF 224Z T A Diode MA713 TX Diode UM9401F Diode MI809 T11 Diode MA77 TW Diode 155352 TPH3 Varicap HVU350TRF Varicap HVU350TRF Varicap HVU350TRF Varicap HVU350TRF Diode DAN202U T107 Diode DAN202U T107 Diode 155302 TE85R Diode 188302 TE85R DIODE DSA3A1 Diode DA221 TL Diode MA77
50. as described starting with Section 3 3 1 2 Select the channel on which the call will be made as described in Section 3 4 3 Regulations require that the channel be monitored before transmitting to make sure that it is not being used by anyone else If you were to transmit while someone was talking you would probably disrupt their conversation Refer to Monitoring Before Transmitting description which follows for more information 4 Ifthe channel is not busy press the microphone PTT switch to talk and release it to listen 5 When the conversation is finished place the micro phone back on hook 3 4 4 MONITORING BEFORE TRANSMITTING Use one of the following methods to monitor the channel before transmitting a message Note if the busy indicator on the front panel is being displayed If it is not the channel is not busy and a message can be transmitted Taking the microphone off hook disables coded squelch control if it is programmed for the monitor function Take the microphone off hook and the indication should be displayed If no messag es are heard the channel is not busy and a message can be transmitted If the monitor MONI option switch is pro grammed pressing it disables coded squelch control similar to taking the microphone off hook If no messages are then heard the channel is not busy and a message can be transmitted Press the switch again to disable monitoring If the Trans
51. circuit as MOD Narrow band wideband switch Q21 is connected to the input of the splatter filter IC6b and switched by NWC signal from the I O expander IC11 When NWC is high 021 shifts the filter cut off frequency for narrow band deviation selection 5 2 2 MODULATION CIRCUIT The microphone audio signal modulates the fre quency of VCO Q7 Q8 The MOD signal from switch IC4 pin 10 changes the reactance of diode D9 which frequency modulates the VCO frequency The modulated VCO signal is amplified by buffer amplifi ers Q6 Q5 and Q4 and applied to the transmit driver circuit 5 2 3 TRANSMIT DRIVER CIRCUIT The transmit driver circuit amplifies the VCO oscillating signal to the level required by the power amplifier module The RF signal from buffer amplifier 04 passes through the T R switch D5 and is amplified by the buffer amplifiers Q3 and Q2 and driver Q1 The signal is then applied to the power amplifier module 5 2 4 POWER AMPLIFIER MODULE The power amplifier module amplifies the driver signal to the output power level The RF signal from the driver QI is applied to the power module which produces 45 watts of output power at the antenna jack The amplified signal is fed through antenna switching circuit D3 and D4 a low pass filter and APC detector and is then applied to the antenna jack The collector voltage of driver 01 and the control voltage on pin 2 of the power module come from A
52. counter and key the transmitter using the test cable switch Adjust for the displayed frequency by pressing the computer adjust keys Unkey the transmitter ADJUSTMENT PROCEDURE VHF ADJUSTMENTS CONT D AC millivoitmeter Speaker 402 DC power supply 13 2 13 6 V 15A LT _ ANH H J2 pin 25 Audio input point L14 PLL lock voltage adjustment CP1 PLL lock voltage check point Figure 6 4 VHF Adjustment Points 4 Press Enter again to select the second adjust chan nel Key the transmitter and adjust for the displayed frequency Unkey the transmitter and press Enter again to exit this function 6 4 2 OUTPUT POWER ADJUST 1 Select the high power channel in the middle of the band Test Ch 3 160 050 MHz Connect a power meter to the antenna jack 2 Scroll to Power Hi on the screen and key the transmitter using the test cable switch Use the com puter adjust keys to set the following power Unkey the transmitter Repeat for the Low2 Test Ch 4 and Low1 Test Ch 5 power levels High Power 45 watts Test Ch 3 Low2 Power 25 watts Test Ch 4 Low1 Power 4 5 watts Test Ch 5 6 4 3 FM DEVIATION ADJUST 1 Connect an audio generator to the microphone audio input of the test cable pin 5 shown in Figure 6 3 Set the generator output for 1 kHz at 40 mV rms November 1998 Part No
53. from the audio It should be programmed On if Call Guard squelch is used Auto Reset Timer A B These timer settings are used by the Auto Reset parameter in the channel screen see Table 4 1 These times set the delay in returning to the mute mode or Power On Scan after receiving a message or pressing a key To disable the Auto Reset function set one of these timers to Off 0 and select it in the channel screen Inactive Timer This feature is available with the PMR European mode only It sets the time in seconds to return to the Inaudible mode after the Audible mode is selected To turn off the inactive timer function do not assign Inactive in the channel screen Programs the time out timer time in seconds If the transmitter is keyed continuously for longer than this time the transmitter is disabled The time out timer is enabled or disabled for each channel by the TOT parameter in the channel screen see Table 4 1 This programs the time in seconds that the transmitter is disabled by the time out timer The transmitter cannot be keyed again until this time expires TOT ID Out If this parameter is enabled an DTMF ID code is automatically transmitted just before the time out timer disables the transmitter This ID code is set on the Log ID line of the DTMF Autodial screen see Table 4 3 TOT Beep If this parameter is enabled warning beeps are transmitted 10 seconds befor
54. is not available with this transceiver Any or none of the following hanger functions can be programmed Monitor Disables CTCSS DCTS Call Guard signaling on off hook and re enables it when back on hook Scan Automatically enables scanning when placed on hook Prio A Automatically selects the priority A channel when taken off hook Enables or disables the key press beep This programming can be overridden by the power on menu see Section 3 3 4 or BEEP key see Section 3 3 10 November 1998 Part No 001 7600 001 4 8 PROGRAMMING Table 4 2 Key and Display Assign Screen Description Continued Parameter Description Enables or disables the display and key backlight This programming can be overridden by the power on menu see Section 3 3 4 or LITE key see Section 3 3 9 The Auto configuration allows it to be controlled by pin 1 of the DB9 connector on the optional accessory cable The on condition is selected by 0 volts low and off by 12 volts high This can be programmed for one of the following configurations MR CH Individual The power output selected by the HIGH LOW1 LOW keys see preceding description is only temporary Power returns to the level programmed for the channel when the channel is changed or transceiver power is cycled Override The power output selected by above power keys overrides the channel programming The selected level is permanent on the channel changing the channel or
55. on the channel see Figure 4 2 NOTE If performing the deviation adjustment in the next section the long tone must be turned on in RPT STN ID on the Memory Channel screen Key amp Display Assign and program Tx Code and Call switches for use in transmitting 5 tone codes Setting 5 Tone Deviation The only adjustment on the 2 5 tone module is a potentiometer for setting the transmit tone deviation for 5 tone operation This control is factory preset and should not require readjustment in the field However if adjustment is required proceed as follows November 1998 Part No 001 7600 001 INSTALLATION AND DISASSEMBLY 1 Monitor the transmit signal with a communications monitor Set it for HPF Off LPF 20 kHz De emphasis Off and Level P P 2 2 Select a channel near the center of the band and turn a long tone on see preceding NOTE by pressing the appropriate front panel key 3 Adjust potentiometer R18 DEV on the module for the following deviation 25 kHz Channel Spacing 3 5 kHz 20 kHz Channel Spacing 2 8 kHz 12 5 kHz Channel Spacing 1 7 kHz November 1998 Part No 001 7600 001 2 6 Check channels on each end of the operating band to make sure deviation is within the following limits If not repeat preceding adjustment 25 kHz Channel Spacing 3 0 to 5 0 kHz 20 kHz Channel Spacing 2 4 to 4 0 kHz 12 5 kHz Channel Spacing 1 5 to 2 5 kHz NOTE It is recommended tha
56. sage is displayed if programmed The transceiver is then ready to be used To turn power off press and hold the POWER switch until power turns off 3 3 2 ENTERING A PASSWORD The transceiver may be programmed so that a password must be entered before the transceiver can be used When power is then turned on PWORD is displayed and the four digit passcode must be entered This code is entered using the F1 F4 and channel down LY keys The number entered by each key is as follows The numbers in a block are detected as the CF 19 Ro 17 Number 0 1 2 3 4 Entered 5 6 7 8 9 same For example 1234 is the same as 6789 If the PWORD indication does not turn off after enter ing four digits you may have entered an incorrect number Cycle transceiver power and try again 3 3 3 VOLUME LEVEL ADJUSTMENT The volume can be adjusted in up to 32 steps by pressing the volume up down keys 4 graph in the alphanumeric display indicates the current volume level If equipped with a option switch you may be able to press or press and hold that switch to enable audio for use as a reference level The minimum selectable volume level can be set by the power on menu described in Section 3 3 4 Select this mode and then press F1 to display AFMIN Then press the volume up down keys to select the desired minimum level The current level is indicated by the bar graph or receiver nois
57. so TONE PLST 355004 sck HANGER VIN 35 5 oe SD TEMP 87 88 LVIN AM Is 5 R60 BEEP B EPOUT MIC 39 5 olo esp BEEP gt p to FRONT nmn Q10 N ber 1998 8 1 Exito 00 1 7600100 VHF 7610 BLOCK DIAGRAM VHF 7610 Transistor Basing Diagrams TRANSISTORS AND FET S 2SA1588 GR Symbol ZG ifi 2804081 R Symbol BR IN 2SJ144 Y Symbol VY 5 G D DTA144EU Symbol 16 XP6501 Symbol 5N Da 2581124 5 Symbol BG 2581143 5 2SB1201 S Symbol B1201 2SC4703 2SD1664 Symbol SE Symbol DA 28C2714 Y Symbol QY 2SC4215 O Symbol QO 2SC4226 R25 Symbol R25 2SK166 2 Symbol K 3SK1239 XR Symbol XR 2SK1880 Y DTA143ZU Symbol XY Symbol 113 DTC114EU Symbol 24 DTC144TU Symbol 06 DTC144WU Symbol 86 DTC363EK Symbol H27 XP4601 Symbol 5C e DIODES 188375 Symbol FH 8051 M TX Symbol 5 1 h November 1998 Part No 001 7600 001 VHF 7610 Diode Basing Diagrams DA221 DAN202U DAN204U HVU17TRF Symbol K Symbol N Symbol K Symbol E lt 8 2 D140 cag C h 8008 02202 48 08 9 ES eu c 290 C150 t R95 Gws CJIc148 LS cert DIZ W4 106 R58 R57 CJ R56 CLI R
58. spacebar backspace Unkey the transmitter Wideband 30 kHz Models 4 2 kHz Narrow Band 12 5 kHz Models 2 1 kHz If the transceiver operates on both narrow and wide band channels select Test Ch 6 and also adjust the deviation on that channel see note in Table 6 2 ADJUSTMENT PROCEDURE UHF ADJUSTMENTS CONT D DC power supply 13 2 13 6 V 15 millivoltmeter Speaker 4Q CP1 PLL lock voltage check point L23 PLL lock voltage adjustment L26 PLL lock voltage adjustment J4 pin 25 Audio input point Figure 6 6 UHF Adjustment Points 4 Press the adjust keys on the computer so that the 6 7 4 DTCS WAVEFORM ADJUST waveform appears as follows 1 Select the channel on the low end of the pro grammed for DTCS code 007N Test Ch 5 5 Pal Set For Flat 2 On the computer screen scroll to DTCS N if set Waveform ting a narrow band channel or DTCS W if setting a wideband channel 5 If the transceiver operates on both narrow and wide 3 Key the transmitter and view the demodulated sig band channels select Test Ch 7 and also set the nal on the CRT of a communications monitor waveform on that channel see note in Table 6 2 November 1998 6 9 Part No 001 7600 001 ADJUSTMENT PROCEDURE UHF ADJUSTMENTS CONT D 6 8 RECEIVER ADJUSTMENTS UHF MODELS 6 8 1 BANDPASS FILTER ADJUST 1 Select the channel on the low end of the band Test
59. to PMR models Refer to on TRANSCEIVER WITH ANOTHER line help for information on parameters in these screens One transceiver can be used to program another with identical data Replication Cable Part No 597 Rx Code Channel This screen is shown below and it 2002 200 is required to connect the transceivers programs the receive 5 tone code information together see Table 1 1 The master source trans ceiver must have the following Common screen see E Table 4 7 parameters programmed to perform i Canal BBC END Wada tun Saan cloning Transmit Data Out Enabled If this parameter is not enabled the transceiver does not go into the clone mode The programming of this parameter does not affect the ability to receive data Therefore it can be in either mode in the slave target transceiver fed Had Hat ted fed fed fed Hel Set Mode Access Enabled This must be pro Tx Code Channel This screen is shown below and it grammed to allow the Dealer Set mode to be programs the transmit 5 tone code information accessed so that cloning can be enabled e Dealer Passcode This six digit code must be Test ate as dal known to enable the Dealer Set mode Proceed as follows to program one transceiver with another 1 Select the Dealer Set mode in the Master source transceiver by turning power on with the F1 and up 4 key pressed 2 The display then indicates DEALR whic
60. to the antenna jack Set it to the channel frequency with an output mod ulated with 1 kHz at the following deviation Wideband 30 kHz Models 3 5 kHz Narrowband 12 5 kHz Models 1 75 kHz Scroll to SQL on the computer screen and press the adjust keys to lower the displayed number so that the receiver unsquelches the 1 kHz tone is heard Also adjust the volume if necessary Adjust the signal generator output to obtain 8 dB SINAD Press the computer adjust keys to increase the dis played number to the point where the receiver squelches Then slowly adjust the number down ward again until the receiver just unsquelches 6 8 3 BEEP TONE LEVEL This adjustment sets the volume of the beep tone that is heard when keys are pressed and at other times if it is enabled The computer setup used in the pre ceding steps is not required for this adjustment Pro ceed as follows 1 Unplug any cable that may be plugged into the microphone jack and locate R60 inside this jack see Figure 6 5 2 Repeatedly press a front panel switch to enable the beep tone and adjust R60 for the desired level SECTION 7 PARTS LIST Description 7610 VHF Main Unit 7610 VHF MAIN UNIT Ceram GRM42 6 CK 020C 500PT Ceram GRM42 6 CH 180 500PT Ceram C1608 CH 1H 471J T A Ceramic GRM40 CK 0 5 50PT Ceramic C1608 CH 1H 471J T A Ceram GRM42 6 CH 080D 500PT Ceram GRM42 6 CH 120J 500PT Ceram GRM42 6 CH 150J 500PT Ceram GRM42
61. two stage tunable bandpass filter controlled by D7 and D8 The filtered signals are amplified by RF amplifier Q2 and applied to another two stage bandpass filter controlled by D9 and D10 These filters attenuate unwanted signals The filtered signal is then applied to the first mixer Q3 The tunable bandpass filters controlled by D7 D10 employ varactor diodes to tune them to the center frequency of the RF passband This gives a wide bandwidth receiver good image response rejection The diodes are controlled by the CPU via level controller IC12 5 5 3 FIRST MIXER AND FIRST IF CIRCUITS The first mixer circuit converts the received sig nal to a fixed frequency first IF signal of 46 350 MHz The RF signal from the bandpass filter is applied to the first mixer Q3 This signal is mixed with the first LO signal from VCO 023 and buffers 028 and Q30 to produce the IF signal The 46 350 MHz first IF signal then passes through a pair of crystal filters which sup press out of band signals The filtered signal is then amplified by first IF amplifier Q4 and applied to second IF system IC1 5 5 4 SECOND IF AND DEMODULATOR CIRCUITS The second mixer circuit converts the 46 350 MHz first IF signal to a 450 kHz second IF signal A double conversion superheterodyne receiver like this improves the image rejection ratio and provides a stable receiver gain FM IF system IC1 contains second mixer limiter amplifier quadrature d
62. 0 k ohm Res ERJ3GEY 683 V 68 k ohm Res 184 V 180 k ohm Res ERJ3GEY 563 V 56 k ohm Res ERJ3GEYJ 184 V 180 k ohm Res ERJ3GEY 224 V 220 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEYJ 103 10 k ohm 022 3906 165 022 3906 165 022 3906 167 022 3906 167 022 3906 163 022 3906 171 022 3906 143 022 3906 143 022 3906 391 022 3906 865 022 3906 163 022 3906 160 022 3906 392 022 3906 165 022 3906 395 022 022 3906 866 022 3906 867 022 3906 162 022 3906 175 022 3906 138 022 3906 163 022 3906 175 022 3906 175 022 3906 151 022 3906 163 022 3906 173 022 3906 171 022 3906 160 022 3906 168 022 3906 173 022 3906 184 022 3906 184 022 3906 143 022 3906 395 022 3906 395 022 3906 395 022 3906 163 022 3906 173 022 3906 177 022 3906 172 022 3906 177 022 3906 178 022 3906 163 022 3906 163 022 3906 163 Description Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 684 V 680 k ohm Res ERJ3GEY 123 V 12 k ohm Res ERJ3GEY 684 V 680 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEY 153 V 15 k ohm Res ERJ3GEY 474 V 470 k ohm Res ERJ3GEYJ 683 V 68 k ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEYJ 124 V 120 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 222 V 2 2 k ohm Res ERJ3GEYJ 105 V 1 M ohm Res ERJ3GEY 105 V 1 M ohm R
63. 000 2 999 M 1 e 4 9 zuo sj ry 4001 S 100 8 as 620 1 Ko 5500 1 o 1000 wo al 850 mel t SION t Mi EO a 3 iz L 55 Tosza s i t 1 t L gao yo d 2 5 28 2 8 dzy L 9929 4 11 ise oe 2 NE TSS t 1 1 By diy 925 dry Ed z T 1nodv peo d 152 H 5 dih dzy dry 1 z aao 3 v T s Feo diy 1920 199 32 13a i PA PE e a Tam 020 di HE e bc bo 1000 dzy 1 920 IPS A dM es BG 1 dz a bah abah mam MAE X 4 es 919215 E T 1000 6 5 lalala 5 2 1 BE 5 00005 9610 1000 2000000008 lt 9620 5 2 0000000000 bd ti 19 1000 Sassi F Aor s tud 8620 5 Sem 96d pueq H alz 6612 1819 fw EE 218 1 8 00897 Pla eps ofa 3 Sap 5315177 4089 3 o8 66H t d 8 JA OW dip 4 dz it wzo doze kalo 2 w A Tus Hea 4 t diy 1122 6619 Ng ong j Sj peo 8 H AW pid t E 28 Ta 2520 t 11 9 0 gs pO T 1 u m div 920 poro ig 9 glo 9629 diy lio t AUS kang OW gl 60
64. 02K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 070D T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 471K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 471K T A Ceramic C1608 CH 1H 100D T A Ceramic C1608 JB 1C 473K T A Ceramic C1608 JB 1C 473K T A Ceramic C1608 JB 1C 473K T A Ceramic C1608 JB 1C 473K T A November 1998 Part No 001 7600 001 7640 UHF Main Unit 022 3906 931 7 10 Description Ceramic C1608 JB 1C 473K T A Ceramic C1608 JB 1H 471K T A Ceramic C2012 JB 1A 564K T A Ceramic C1608 1C 104Z T A Ceramic C1608 JB 1H 102K T A Tantalum ECST1AY225R Ceramic C1608 JB 1H 471K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 UJ 1H 080D T A 400 430 MHz Ceramic C1608 UJ 1H 060D T A 450 470 MHz Ceramic C1608 UJ 1H 040D T A 470 512 MHz Ceramic C1608 UJ 1H 180J T A 400 430 MHz Ceramic C1608 UJ 1H 150J T A 450 490 MHz Ceramic C1608 UJ 1H 120J T A 490 512 MHz Ceramic C1608 CH 1H 100D T A 400 430 MHz Ceramic C1608 CH 1H 060B T A 450 470 MHz Ceramic C1608 CH 1H 050B T A 470 490 MHz Ceramic C1608 CH 1H 030B T A 490 512 MHz Ceramic C1608 CH 1H 120J T A 400 430 MHz Ceramic C1608 CH 1H 080D T A 450 470 MHz Ceramic C1608 CH 1H 060B T A 470 490 MHz Ceramic C1608 CH 1H 050B T A 490 512 MHz Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Ceramic
65. 038P Connector B11 B ZR SM3 TF Connector PI28A 02M Connector HSJ0807 01 010 Connector B2B ZR SM3 TF Coil LA 243 Coil LA 253 Coil LW 25 Coil LA 253 Coil ELJNC 47NK F Coil ELJNC 47NK F Coil ELJNC 47NK F Coil ELJNC R10K F Coil LA 253 Coil ELJRE R10G F Coil ELJRE R10G F Coil ELJRE R10G F Coil MC152 E558CN 100024 Coil NL 322522T 2R7J 3 Coil ELJRE 82NG F Coil 36CS 656LZ 09K P3 Coil 36CS 656LZ 09K P3 Coil LQN1H 54NK04 Coil LQN1H 54NK04 Coil LQN 1A 33NJ04 Coil LQN 1A 33NJ04 Coil ELJRE 47NG F Coil ELJRE R10G F Coil MLF1608D R47K T Coil MLF1608A 1ROK T 022 3906 828 022 3906 792 022 3906 554 022 3906 302 022 3906 555 022 3906 832 022 3906 553 022 3906 553 022 3906 016 022 3906 559 022 3906 830 022 3906 831 022 3906 782 022 3906 681 022 3906 835 022 3906 836 022 3906 837 022 3906 842 022 3906 837 022 3906 845 022 3906 845 022 3906 845 022 3906 849 022 3906 837 022 3906 663 022 3906 651 022 3906 675 022 3906 838 022 3906 838 022 3906 676 022 3906 647 022 3906 647 Description Coil MLF1608A 1ROK T 1922 VCO case 1922 VCO cover 2055 Filter case 2055 Filter cover PA holder Rubber sheet AD Transistor 25 4703 1 SE Transistor 25 4215 TE85R Transistor 25 4215 TE85R Transistor 25 4215 TE85R Transistor 25 4215 TE85R Transistor 25 4215 TE85R Transistor 25 4226 2 R25 Transistor 25 4226 2 R25 Transistor DTC144EU T107 Transistor 25
66. 050 MHz 2 Connect a SINAD meter with a 4 ohm load to the external speaker jack ADJUSTMENT PROCEDURE VHF ADJUSTMENTS CONT D Connect an RF signal generator to the antenna jack 6 5 3 BEEP TONE LEVEL Set it to the channel frequency with an output mod ulated with 1 kHz at the following deviation This adjustment sets the volume of the beep tone that is heard when keys are pressed and at other times Wideband 30 kHz Models 3 5 kHz if it is enabled The computer setup used in the pre Narrowband 12 5 kHz Models 1 75 kHz ceding steps is not required for this adjustment Proceed as follows Scroll to SQL on the computer screen and press the adjust keys to lower the displayed number so 1 Unplug any cable that may be plugged into the that the receiver unsquelches the 1 kHz tone is microphone jack and locate R60 inside this jack heard Also adjust the volume if necessary see Figure 6 5 Adjust the signal generator output to obtain 8 dB 2 Repeatedly press a front panel switch to enable the SINAD beep tone and adjust R60 for the desired level Press the computer adjust keys to increase the dis played number to the point where the receiver squelches Then slowly adjust the number down ward again until the receiver just unsquelches IA WA NA WA TA WANE NE WAND EHohnson R60 Beep Tone Level Adj Figure 6 5 Beep Tone Leve
67. 175 Res ERJ3GEYJ 332 V 3 3 k ohm 022 3906 159 Res ERJ3GEYJ 334 V 330 ohm 022 3906 180 Res ERJ3GEY 391 V 390 ohm Res ERJ3GEY 152 V 1 5 k ohm Res ERJ3GEY 100 V 10 ohm November 1998 Part No 001 7600 001 022 3906 149 022 3906 155 022 3906 138 7 6 Description Res ERJ3GEY 153 V 15 k ohm Res ERJ3GEY 153 V 15 k ohm Res ERJ3GEY 223 V 22 k ohm Res ERJ3GEY 223 V 22 k ohm Res 103 V 10 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 101 V 100 ohm Res 101 V 100 ohm Res ERJ3GEY 392 V 3 9 k ohm Res MCR50JZHJ 680 ohm 681 Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 154 V 150 k ohm Res ERJ3GEY 153 V 15 k ohm Res RROS16R 104 D 100 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res RR0816R 304 D 300 k ohm Res RR0816R 753 D 75 k ohm Res ERJ3GEY 682 V 6 8 k ohm Res ERJ3GEY 104 V 100 k ohm Res 100 V 10 ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 561 V 560 ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 683 V 68 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 273 V 27 k ohm Res ERJ3GEY 683 V 68 k ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 101 V 100 ohm Res RR0816R 104 D 100 k ohm Res RROS16R 104 D 100 k ohm Res RR0816R 104 D 100 k ohm Res ERJ3GEY 103 V 1
68. 2 10k 3 DTCS m m 15p MH 5p L MH 5 2S s m HAO 1 EX 217 R162 0 85V TOP R146 C176 R269 IN Dar 28I Qos R125 10 4p H ea T SET OSH O 8 5 10 0 0047 1 470 82k 22 39k 3 Q29 0 gt OFT OST w u na O CN 55 DTC363EK 55 55 NJM2904M 77 I WAW crcss Ww H w NT 22809107 58 R128 4 7k 2 5 8 CHASSIS 55 0 7V INI 5 S T 5 g2 X 125 R121 1 T Er 88 gal UE LMR only C173 C169 Een 83 KA E5 ag DTMF d 4 12 DTC144EU R126 L27 vi ac D29 R151 S5 LowW6s Wd W138 0 5 560 22 ete DAN202U 8 Et pi P zzz lt to L 38p ony ash 38 lt 58 88 9 q l bo za z 8 4 854 854 z 99 gt 5 Bas 5 Sha Son IBI 8 DX 0V ERES 55 w 2 5 180k fp PVN only ES v 85T RX2 9V 133353 55 amp ci 9 ro 4 AT cor 032 lt aw 6 220k L MC152 E558ANA 100050 MH L H Saxa T T DTC144EU ew TJonly x MH t Go CPUSV 1 MIC av 1 UM Dog R204 10k Sss mai cr J6 gt E x a o r a o alo zoe S o o o s 5 gt gt gt FX MUTE Da4 mr melo ul isla E BU4094BCF 5 1V D
69. 2 3906 063 022 3906 063 022 3906 063 022 3906 063 022 3906 080 022 3906 063 022 3906 063 022 3906 063 Description Ceramic C1608 JB 1E 103K T A Tantalum ECSTIAY225R Ceramic C1608 JB 104K T N Ceramic C1608 JB 1C 104KT N Ceramic C1608 CH 1H 150J T A Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1A 224K T N Tantalum ECSTOJY 106R Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1E 103K T A Electrolytic ECEV1EA221P Ceramic C1608 JB 104K T N Electrolytic ECEV1AA471UP Electrolytic ECEV1CA220SR Ceramic C1608 JB 1H 102K T A Electrolytic ECEV1CA220SR Ceramic C1608 JB 1H 102K T A Electrolytic ECEV1CA220SR Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Tantalum ECSTOJY 106R Electrolytic ECEVOJA101SP Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1H 102K T A Electrolytic 25 MV 470 HC Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 471J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Tantalum ECST1CY105R Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A 7610 VHF Main Unit Desc
70. 2 3906 168 022 3906 163 022 3906 164 022 3906 164 022 3906 171 022 3906 175 022 3906 175 November 1998 Part No 001 7600 001 PARTS LIST Front Unit All Models Description Res ERJ3GEYJ 274 V 270 k ohm 022 3906 179 Res ERJ3GEYJ 334 V 330 ohm 022 3906 180 Res 123 V 12 k ohm Array EXB V8V 102JV Array EXB V8V 102JV Array EXB V8V 102JV Array EXB V8V 102JV Array EXB V8V 102JV Res ERJ3GEYJ 101 V 100 ohm 022 3906 164 022 3906 143 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm 022 3906 154 022 3906 154 022 3906 154 022 3906 154 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEY 562 V 5 6 k ohm Res ERJ3GEY 153 V 15 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEYJ 102 V 1 k ohm Trimmer RV 150 RH03A3A14X0FC 103 022 3906 161 022 3906 165 022 3906 171 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm 022 3906 154 022 3906 154 022 3906 154 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEYJ 473 V 47 k ohm 022 3906 171 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEYJ 473 V 47 k ohm Jumper MCRIOEZHJ JPW 000 Jumper ERJ3GE JPW V Cable OPC 741
71. 2077 4 2501664 4 7 RX OV ov o e 2 L 5 gt FOR I sd RX APPROX ne IN NRX79V sew AB MH Y655LY 03K P3 L4 LA 382 L2 EP3 3 3VdBm OF TOS 1 ano av i bs n iu ze xi 2 5p L 1 sl g lt 9 19 oft 5 0V ge BN CDBCA450CX24 1 5p ML MH L7 15nH ay REV S usd is 6 ST 88 PSF 0 5 5 E 8 DC domam 79V 515 1 8v 161 R40 8 C37 BI 35 y TO To o aNG s 15nH ip L 77 n bale CABLE 8 la 8 L 1 8V TA31136EN zs 2 2k 11 n D3 Hr CHASSIS D13 CFWM450G F T 8 T 1 3p Other eoe 0122581132 DTC114EU DAN202U PA S UM9410F P Wit 411p 2 DTC114EU _ 2P L H only We 100 218 AREY 5 Fa ther 0 001 88 o Tes n 5 226 1k w10 1 g TX 0V 1 C52 00 T3888 ST gg as 779 102801664 14 RX 22V T Ts Di x nr al EE Sp g s da 354 8 zL zi II Tale R58 lt 2 100k 5 TSS te eTocs x 8 a7 vessi v conisea t as Sas L 9 Os 8 C46 R33 M S 22 55 2 3p P LML SC 1322 P L 47k 8 S 29 2 518 iz 1 Tos lt o 5 52 BA 0 001 330 Slc LOT 2 L ggg Onen only
72. 2R5B T A 490 512 MHz only Ceramic C1608 CH 1H 040B T A other bands Ceramic C1608 JB 1H 102K T A 022 3906 905 022 3906 600 022 3906 059 022 3906 795 022 3906 819 022 3906 071 022 3906 060 022 3906 087 022 3906 600 022 3906 615 022 3906 609 022 3906 610 022 3906 086 022 3906 087 022 3906 085 022 3906 084 022 3906 490 022 3906 085 022 3906 596 022 3906 615 022 3906 610 022 3906 600 022 3906 087 022 3906 084 022 3906 071 022 3906 609 022 3906 060 Description Ceramic C1608 JB IH 102K T A Ceramic C1608 CH 1H 2R5B T A 400 430 MHz Ceramic C1608 CH 1H IR5B T A 450 470 MHz Ceramic C1608 CH 1H 020B T A 470 490 MHz Ceramic C1608 CH 1H 010B T A 490 512 MHz Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 070D T A 400 430 MHz Ceramic C1608 CH 1H 060B T A 450 470 MHz Ceramic C1608 CH 1H 040B T A 470 512 MHz Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H OR5B T A Ceramic C1608 CH 1H 010B T A 400 430 MHz only Ceramic C1608 CH 1H 0R3B T A other bands Ceramic C1608 CH 1H 2R5B T A 400 430 MHz Ceramic C1608 CH 1H IR5B T A 450 490 MHz Ceramic C1608 CH OR5B T A 490 512 MHz Ceramic C1608 CH 1H 070D T A 400 430 MHz Ceramic C1608 CH 1H 060B T A 450 470 MHz Ceramic C1608 CH 1H 050B T A other bands Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 010B T A Ceramic C1608 CH 1H 030B T A Ceramic C1608 JB 1H 102
73. 395 022 3906 175 022 3906 184 022 3906 184 022 3906 143 022 3906 870 022 3906 171 022 3906 169 022 3906 177 022 3906 183 022 3906 166 022 3906 171 022 3906 157 022 3906 181 022 3906 154 022 3906 175 022 3906 163 022 3906 175 022 3906 154 022 3906 166 022 3906 162 022 3906 175 022 3906 150 022 3906 871 022 3906 163 022 3906 151 022 3906 171 022 3906 691 022 3906 163 022 3906 872 November 1998 Part No 001 7600 001 PARTS LIST 7610 VHF Main Unit Description Res ERJ3GEYJ 153 V 15 k ohm Jumper ERDS2T0 Jumper ERJ3GE JPW V Cable OPC 453 Crystal CR 575 15 3 MHz Discriminator CDBCA450CX24 Description 7640 UHF MAIN UN Cer GRM42 6 CH 070D 500PT 400 470 MHz Cer GRM42 6 CH 060D 500PT 470 512 MHz Cer GRM42 6 CH 070D 500PT 400 470 MHz Cer GRM42 6 CH 060D 500PT 470 512 MHz Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 070D T A Ceramic C1608 JB 1H 102K T A Cer GRM42 6 CH 070D 500PT 400 470 MHz Cer GRM42 6 CH 060D 500PT 470 490 MHz Cer GRM42 6 CH 040D 500PT 490 512 MHz Cer GRM42 6 090D 500PT 400 470 MHz Ceramic GRM42 6 CH 100D 500PT 470 490 MHz Ceramic GRM42 6 CK 020C 500PT 400 430 MHz only Ceramic GRM42 6 CK 010C 500PT other bands Ceramic GRM42 6 CJ 030C 500PT 470 490 MHz Ceramic GRM42 6 CH 050C 500PT other bands Ceramic HM60SJ SL 470 500V November 1
74. 4081 T107 R FET 2SK880 Y TE85R FET 3SK239XR TL FET 3SK166 2 T7 Transistor 25 2714 TE85R Transistor 25 4081 T107 R Transistor DTA144EU T107 Transistor 2581143 5 Transistor 25 4081 T107 R Transistor DTC144EU T107 Transistor DTC363EK T147 Transistor DTC144EU T107 Transistor DTC144EU T107 Transistor DTC144EU T107 Transistor DTC144EU T107 Transistor DTC114EU T107 Transistor 2SB1124S TD Transistor 2SA1588 GR TE85R Transistor 2SA1588 GR 85 Transistor 2SB1201 S TL Transistor XP6501 TX AB Transistor DTC144EU T107 Transistor DTC114EU T107 Transistor DTC114EU T107 FET 2SJ144 Y TE85R Transistor DTA144EU T107 Transistor 2501664 1000 Transistor DTC144WU T107 7610 VHF Main Unit 022 3906 561 022 3906 561 7 5 Description Transistor 2501664 1000 Transistor DTC144EU T107 Transistor 25 4081 T107 Res MCR10EZHJ 82 k ohm 823 Res ERJ3GEY 470 V 47 ohm Res ERJ3GEY 470 V 47 ohm Res ERJ3GEY 101 V 100 ohm Res 182 V 1 8 k ohm Res MCR18EZHJ 22 ohm 220 Res MCR18EZH 33 ohm 330 Res MCR50JZHJ 56 ohm 560 Res MCR10EZHJ 5 6 ohm 5R6 Res MCRI0EZH 5 6 ohm 5R6 Res ERJ3GEY 561 V 560 ohm Res ERJ3GEY 222 V 2 2 k ohm Res ERJ3GEY 220 V 22 ohm Res ERJ3GEY 101 V 100 ohm Res 822 V 8 2 k ohm Res 182 V 1 8 k ohm Res ERJ3GEY 101 V 100 ohm Res ERJ3GEY 151 V 150 ohm Res ERJ3GEY 153 V 15 k ohm Res ERJ3GEY 562 V 5 6 k ohm
75. 446 Res 5 o ilo mi 55 T5 8 zlazla lt J iM er gx 95 485 R65 2 5 BES 24 NJM2902M p 32O 5 5 2 5 2 8 ps lt Tur amp 5 ga L 1 5 5 al 8 PE 3 TS DTC144EU C330 J pr or m m 22 only TX 2 4V n d 7p P 39 P L only 33 Other P RX 0V I TX 2 3V Ha Ran 215 39 L L only veg RX 0V 10p Other 33 Other 27 Other L 5V T t iim R116 6 8k R115 6 8k eo y x NE 2 AW AW p p Bo CPUSV I I 15p ML MH 6p ON 13 67 C335 R142 25 2 35 1171 12p H 4p MH H 62V e H 47 10k SIT SET 28 AW I t I THEA 1 i C195 5 0 1 DTA144EU r ET ET 2505110 24 8 470 1 piat 77 TES 122 R114 3 3k P ML only Ji 4 TO IC6b lt 4 a r C TX2 8 3 9k Other P AG I P De NuMegoam 34V 10 az PE E _ EN 10 RX27V SEJAGK T 3 S Sa 24V ET ET DTCit4EU R118 124 3 3k Other L 954 5 m 2 TX 2 0V 55 5 R144 174 1k iuH 55 52888 8 E 58 IC8b RX 5 0V 6 22k 01 Zo MC152 E558ANA 100051 P3 g2 pet Eu i 7 5 Z NJM2904M 5 ERs 58888 34V C150 az 11365 8 TX 2 0V R145 C175 2 8V 2 E ciso SP1 sor R265 RX38V 24V Zk 01 T wa R124 4 7k 8 Po C148 i pi J2 Bil g T MW Pi 28
76. 51 194 Shield plate 022 3906 976 Coil LA 382 022 3906 952 599 Shield plate 022 3906 869 Coil 33CS Y655LY 02M P3 490 022 3906 972 2056 Sponge 022 3906 886 512 MHz only 2056 M holder 022 3906 887 Coil 33CS Y655LY 03K P3 Rubber sheet AK 1 022 3906 889 other bands Sponge FL 022 3906 885 Coil 33CS Y655LY 03K P3 2056 Sponge 2056 M plate Con LONLA TINIO 2056 Sponge 400 430 MHz only Coil LON 1A 15NJ04 Coil ELJFC 4R7M F Transistor 144 0 T107 022 3901 353 Coil LQN 15NJ04 S FET 3SK272 TX 022 3906 769 Coil I5NJ04 S FET 3SK241 R TX 022 3906 571 Coil ELJRE 39NG F 022 3906 953 Transistor 25 4215 TE85R 022 3906 563 Coil ELINC RI2K F 022 3906 954 Transistor 25 4081 T107 R 022 3901 343 Coil ELINC 56NK F 022 3906 955 Transistor DTA144EU T107 022 3901 353 Coil ELINC R18K F 022 3906 956 Transistor 28D 1664 1000 022 3906 859 Coil LA 232 490 512 MHz 022 3906 951 Transistor DTC114EU T107 022 3906 771 Coil LA 242 other bands 022 3906 958 Transistor 2SD1664 T100Q 022 3906 859 Coil ELJRE 18NG F 022 3906 959 Transistor DTC114EU T107 022 3906 771 Coil ELJRE 22NG F 022 3906 495 Transistor 25 1132 T100 R 022 3906 318 Coil ELJRE 15NG F 022 3906 668 Transistor XP6501 TX AB 022 3906 573 Coil ELJRE 18NG F FET 251377 TE16R 022 3906 977 Coil ELJRE 18NG F 490 512 Transistor DTC114EU T107 022 3906 771 MHz only Coil ELJRE 22NG F other bands 022 3906 495 Coil ELJNC R56K F 022 3906 833 Coil MC152 E558ANA 022 3906
77. 55 CI CIc174 C290 CJ TIR140 R24 CJ D5 N o J5 CJ 221 nn eh C217 R114 9 S O n8 R113 enne E LU x 8 ast R243 7 5 2005 cao i o 1242 CH e 8 UD 3 LIB R198 5 36 Lo H soe sa aa m a N ui R20 JT R201 R199 O ells TN e K ty CI 8 L3 O amp C212 208 R47 R16 ua R48 C 156 Co cil 88 Ny mE 2 c65 CI CJ na N R128 gu 3 7 58 R19 8 amp o 293 L1 zm CIR117 00 esca 9892 dg c B Hu en S C6 0000 B R233 CJ R131 Ces gt R146 33 8r 8r i 98 TP e 08 20 nan Ap 00 8 C cass Glee R121L1 00 eres Co R120 O KAY R175 81480 e1810 co C170 03 c296 J 934 SE TN i 8134 _ 8182 80 Us mg ae R169 R211 R1 sera EN Coa al c17 D28 AS R153 55 0 37 so coo N0000 P0 Cm TF M 10 D Rug 50 8 pe zu 5 E R209 50 Es 05 3 C229 z e U ad CJ R52 2194 2188 62178 R218 R217 2188 m R213 225 CJ 28215 November 1998 001 7600 001 4 VHF 7610 MAIN BOARD BOTTOM VIEW FOLDOUT J2 To Optional Unit 30 GND 29 5V 28 HV 27 MICMUTE 26 AFONOP 25 BEEPOUT 24 RXMUTE 23 DE
78. 6 163 022 3906 174 022 3906 185 022 3906 185 022 3906 185 022 3906 846 022 3906 695 022 3906 695 022 3906 185 022 3906 185 022 3906 185 022 3906 185 Part No 022 3906 063 022 3906 063 022 3906 063 022 3906 063 022 3906 063 022 3906 063 022 3906 063 022 3906 063 022 3906 627 022 3906 063 022 3906 060 022 3906 063 7 18 Front Unit All Models Description Ceram C1608 JB 1H 102K T A Ceram C1608 JB 1H 102K T A Ceram C1608 JB 1H 102K T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 050B T A Ceram C1608 CH IH 200J T A Ceram C1608 JB 1E 103K T A Ceram C1608 CH 1H 470J T A Ceram C1608 CH 1H 470J T A Ceram C1608 CH 1H 470J T A Ceram C1608 CH 1H 470J T A Ceram C1608 CH 1H 470J T A Ceram C1608 CH 1H 470J T A Ceram C1608 JB 1H 102K T A Ceram C1608 JB 1H 102K T A Ceram C1608 JB 1H 471K T A Ceram C1608 JB 1H 102K T A Ceram C1608 JB 1H 102K T A Ceram C1608 CH 1H 470J T A Ceram C1608 JB 1H 102K T A Ceram C1608 JB 1E 103K T A Tantalum ECST1AY106R Ceram C1608 JB 1C 223K T A Ceram C1608 JB 1C 104KT N Ceram C1608 JB 1C 473K T A Ceram C1608 JB 1C 333K T A Ceram C1608 JB 1C 104KT N Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1E 103K T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH I
79. 6 CH 180J 500PT Cera GRM42 6 W5R 102K 500PT Ceramic C1608 CH 1H 471J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 471J T A Ceramic C1608 JB 1H 102K T A Ceram GRM42 6 CH 180J 500PT Ceram GRM42 6 CH 180J 500PT Ceramic C1608 CH 1H 120J T A Ceramic C1608 CH 1H 270J T A Ceramic C1608 CH 1H 120J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 471J T A Ceramic C1608 CH 1H 180J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 471J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 080D T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH IH 470J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 100D T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 180J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 120J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 050B T A Ceramic C1608 CH 1H 220J T A 022 3906 795 022 3906 799 022 3906 252 022 3906 813 022 3906 252 022 3906 819 7 1 Description Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H ORSB T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 020B T A Ceramic C1608 CH IR5B T A Ceramic C1608 UJ 1H 560J T A Ceramic C1608 UJ 1H 330J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1C 104KT N Tantalum ECSTIAY225R Tantalum ECST1CY684R Ceramic C1608 JB 1H 102K T A Tanta
80. 600 001 OPERATION The scan lists are user programmable if the key is available Pressing this key changes the status of the displayed channel in the current scan list only The display indicates SC ON if the channel was just added to the scan list and SC OF if it was just deleted In addition the scan list status is indicated by the decimal point in the display This indicator is on when the displayed channel is scanned The decimal point flashes when scanning is occurring The scan list status of a channel can be changed while scanning only when listening to a message on the channel The current status of all the lists is stored in memory Therefore the status of the various scan lists does not change when power is turned off 3 6 3 PRIORITY CHANNEL SAMPLING Priority channel sampling ensures that messages on priority channels are not missed while listening to November 1998 Part No 001 7600 001 3 8 messages on other channels If priority sampling is used a priority A channel is designated by program ming If the key is available pressing that key selects the priority A channel This key also may be programmed so that if it is pressed and held the prior ity A channel changes to the current channel Sampling of the priority A channel occurs only when scanning is enabled It does not occur while transmitting When the priority channel is sampled while listening to a message on another channel a series of t
81. 608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 100D T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A November 1998 Part No 001 7600 001 7640 UHF Main Unit Description Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1C 104KT N Electrolytic ECEV0JA220SR Ceramic C1608 JB 1H 471K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1C 473K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JF 1C 104Z T A Ceramic C1608 JF 1C 104Z T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 040B T A Ceramic C1608 CH 1H 040B T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 120J T A Ceramic C1608 CH 1H 470J T A Tantalum ECSTOJY475R Ceramic C1608 CH 1H 010B T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J
82. 655 100051 P3 Coil ELJFC IROK F 022 3906 964 2 Coil ELINC 18 ransistor 0 Coil MC152 E558ANA 022 3906 655 Transistor 2SC4081 T107 R 022 3901 343 100051 P3 400 470 MHz Transistor 28C5110 O TE85R 1 022 3906 978 Coil MC152 E558ANA 100050 Transistor DTC114EU T107 022 3906 771 470 512 MHz Transistor 28C5110 O TE85R 022 3906 978 Coil ELJFC 1 ROK F Transistor DTC114EU T107 022 3906 771 Coil ELJRE 27NG F Transistor DTC144EU T107 022 3906 038 Coil ELJRE 27NG F Transistor 2SC5107 O TE85R Coil ELJRE 18NG F Transistor 28C5107 O TE85R 022 3906 566 Coil ELJNC R56K F 022 3906 833 Transistor 28C5110 O TE85R 1 022 3906 978 Coil ELJNC R56K F 022 3906 833 Transistor 25 4081 T107 R 022 3901 343 Coil ELJRE 18NG F Transistor DTC144EU T107 022 3906 038 FET 2SK880 GR TE85R 022 3906 981 1705 VCO case 1 FET 2SK536 TA 022 3906 982 1705 VCO cover 1 022 3906 975 Transistor 28C4081 T107 R 022 3901 343 2055 Filter case 022 3906 880 Transistor DTC144EU T107 022 3906 038 Transistor DTC144EU T107 022 3906 038 Transistor 25 4081 T107 R 022 3901 343 Transistor 2SB1143 S 022 3906 851 Transistor 25 4703 1 SE Transistor 2SC5107 O TE85R November 1998 Part No 001 7600 001 7 14 Description Transistor DTC144EU T107 Transistor DTC144EU T107 Transistor DTC144EU T107 FET 2SJ144 GR TE85R Transistor DTC363EK T147 Transistor DTC144EU T107 Transistor DTC144EU T107 Transistor DTA144EU T107 Transistor DTA144EU T107
83. 95 ena mg C146 R275 ME me LI R133 R19 c30 D18 212878130 026 R121 Na R199 ie 1931 C340 CE LIE oz hh u LJ cs 119 ciee eL AETA C203 C36 tal o BE D c159 C py 0204 4 Lj C34 L5 R210 C35 C155 CR R211 CR Rss R320 R276 NG coL 15 zd Uo C38 CJ 7 cr C138 CI 649 R212 cen Doo 2920 LH AAM R120 gt CJ ud mp 82 27 ixi 267 852 278 222 C306 L1 CJ D13 LI 255 l C237 pa 7 R233 R224 C183 R225 n Poi Ha R229 C65 th 4T C347 cel HO s R50 Be 104 R161 C174 C260 R33 Yin n EJ JE 71 R268 pu 02477 Chas C all R10 C47 wie 62 se Sant 182 7 0 R279 CJ R34 R49 R37 1 319 R162 eal ESI T W15 C54 L1 d E 12 H R252 0 ri eu C250 1 co 042 5132 R266 nm 2552 a C180 7 C60 C184 Ed gom _ E C307 R182 W14 R151 R250 LI s 94 C185 LA R157 R158 R159 8 7 November 1998 Part No 001 7600 001 UHF 7640 MAIN BOARD BOTTOM VIEW FOLDOUT gt W6 ANTENNA JACK W10 Up C342 W11 Q44 dp C314 o LI C329 H Co D6 Oo o CJ C i J4 To Optional Unit lt OO C199 a NI C330 C315 C309 GND PTTIN ne 6326 6328 zu eu 5V PTTOUT N NA R115 HV MICOUT o 95000 0295
84. 998 Part No 001 7600 001 022 3906 165 022 3906 877 022 3906 185 022 3906 878 Part No IT 022 3906 803 022 3906 900 022 3906 803 022 3906 900 022 3906 060 022 3906 060 022 3906 060 022 3906 901 022 3906 902 022 3906 795 022 3906 904 022 3906 905 022 3906 906 022 3906 907 7 8 7640 UHF Main Unit Description Ceramic GRM42 6 CH 040C 500PT 400 470 MHz Ceramic GRM42 6 CJ 030C 500PT 470 512 MHz Ceramic C1608 CH IH 470 Ceramic C1608 JB 1H 471K T A Ceramic GRM42 6 CK 020C 500PT 490 512 MHz only Ceramic GRM42 6 CH 080D 500PT other bands Ceramic C1608 CH 1H 2R5B T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH IR5B T A Ceramic C1608 CH 470J T A Ceramic C1608 CH 1H 060B T A 400 430 MHz Ceramic C1608 CH 1H 040B T A 470 490 MHz Ceramic C1608 CH 1H 050B T A 450 470 MHz 490 512 MHz Ceramic C1608 CH 1H 020B T A 400 430 MHz Ceramic C1608 CH IR5B T A 450 490 MHz Ceramic C1608 CH 1H 010B T A 400 430 MHz only Ceramic C1608 CH 0 5 other bands Ceramic C1608 CH 1H OR75B T A 490 512 MHz only Ceramic C1608 CH 1H 010B T A other bands Ceramic C1608 CH 1H 070D T A 400 430 MHz Ceramic C1608 CH 1H 060B T A 450 470 MHz Ceramic C1608 CH 1H 050B T A 470 512 MHz Ceramic C1608 CH IH 470 Ceramic C1608 CH 1H IR5B T A 400 430 MHz only Ceramic C1608 CH 0 5 450 490 MHz Ceramic C1608 CH 1H
85. A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Electrolytic 16 MV 470 HC Tantalum ECSTOJY 106R Ceramic C1608 JB 1H 102K T A Diode 188375 TL Diode 188375 TL Diode M1407 Diode MA77 TW Diode MA77 TW Varicap HVU350TRF Varicap HVU350TRF Diode MA77 TW Diode MA77 TW Diode MA111 TX Varicap HVU17TRF Diode MI809 T11 Diode MI809 T11 Diode 188352 TPH3 Varicap HVU350TRF Varicap HVU350TRF Varicap HVU350TRF Varicap HVU350TRF Varicap HVU350TRF Varicap HVU350TRF Diode DAN202U T107 Diode DAN202U T107 Diode MA111 TX Diode MA111 TX Diode DAN202U T107 Diode DSA3A1 Diode MA111 TX Diode DA221 TL Zener MA8082 M TX Diode DA204U T107 Zener RD20E B2 Diode DAN202U T107 XTAL FL 285 31 050 MHz Ceramic SFPC450G TC01 November 1998 Part No 001 7600 001 7610 VHF Main Unit 022 3906 063 022 3906 600 022 3906 063 022 3906 060 022 3906 060 022 3906 811 022 3906 627 022 3906 585 022 3906 580 022 3906 043 022 3906 043 022 3906 585 022 3906 585 022 3906 558 022 3906 821 022 3906 585 022 3906 331 022 3906 823 022 3906 582 7 4 Description Ceramic SFPC450E TC01 IC M68702H uPD3140GS E1 058 TA31136FN D EL BU4066BCFV E1 M62363FP 650C NJM2902V TE1 NJM2902V TE1 NJM2904V TE1 S 81250PG PD T1 LA4425A BU4094BCFV E1 Connector FH12 40S 0 5SV Connector AXN330C
86. AN202U DTC144EY ls GND FAN EXST 16 KOY a8 50 i ais SCK 14 im mia IC12 AFO 82858 8 85 TXC 13 TTTT M62363FP 650C pigi caos T a38 PG PA 4 TX2 8V DTC144EU TMUT 12 9898 VING 15 8MFz RX 2 7V DIMIN Pa VOUTI VOUT8 C202 lt t 10 VOUT2 VOUT7 BON 602 3 5 9 NINO d J 5 E VDD GND 1010 bagal Rise a39 ho OPINT 7 EXEN 3 DAST uPD3140GS DTC144EU 5 t o LD RESET 0 47 10k HORNO ocs 91 o SCK BARES NAR 0 6V AM HORN 6 aa SO DI ren BEEPOUT 13 AFO VIN3 VING Wide oV l S TONE 1515 6 21212838 T3 4 VOUT3 VOUT M Narrow 4 8V Code 6 1 GND_16 Optional 17 TO OPTION UT 96 DET A pisc 617 VOUT4 VOUTS 19 UT 105 mmm YING WINE ui TX 0V WE C216 20 10 256536 15 RFATT 2115 6 e e Ka 8 8 8 8 5 RX5 V AW C217 o 2 5 PESEE ESES opvi islo o hs ARRAL SN DTC144EU 1 C218 22 Peor o 2515 6 gl si TTTTT Hn TX47V RX MUTEOY C219 10 001 PII o zlelele RX 0V Barats O ee 8995 88488 gas S S 3 S DAST 31 S S opts M 11 o 20 opcs 8 mE Ll PLST 33 OPT2 10 21 NC a HE TT OF o z
87. B IE 103K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 680J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB IE 103K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 110J T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB IE 103K T A Ceramic C1608 JB IE 103K T A Ceramic C1608 CH 1H 101J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1C 333K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB IE 103K T A Ceramic C2012 1C 1052 Ceramic C1608 JB 1C 104KT N Ceramic C1608 CH 1H 221J T A Ceramic C1608 CH 1H 221J T A Ceramic C1608 CH 1H 100D T A Ceramic C1608 CH 1H 180J T A Ceramic C1608 CH 1H 040B T A Ceramic C1608 CH 1H 120J T A Ceramic C1608 CH 1H 150J T A November 1998 Part No 001 7600 001 7610 VHF Main Unit 022 3906 615 022 3906 087 022 3906 060 022 3906 060 022 3906 063 022 3906 060 022 3906 060 022 3906 609 022 3906 072 022 3906 085 022 3906 060 022 3906 060 022 3906 072 022 3906 597 022 3906 610 022 3906 060 022 3906 067 022 3906 601 022 3906 067 022 3906 063 022 3906 060 022 3906 798 022 3906 060 022 3906 063 022 3906 060 022 3906 613 022 3906 063 022 3906 063 022 3906 063 022 3906 063 022 3906 072 022 3906 060 022 3906 351 022 3906 060 022 3906 063 022 3906 078 022 3906 614 022 3906 603 022 3906 603 022 3906 598 7 2 Description Ceramic C1608 CH 1H 100D T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB
88. C202 C204 The output of this filter is the DC control volt age applied to the VCO The phase detector increases or decreases this control voltage to change the VCO frequency 5 7 2 VCO CIRCUIT Separate receive and transmit VCOs are used The receive VCO consists of Q23 D20 D34 and the transmit VCO consists of Q25 D22 D33 The signal from these VCOs is amplified by buffer amplifiers Q28 and Q29 and is then applied to T R switch D18 and D19 The VCO receive injection signal is applied to first mixer Q3 and the VCO transmit signal is applied to driver Q21 Part of the Q28 output signal is amplified by 029 and fed back to PLL IC10 pin 2 as described in the preceding section 5 7 3 UHF POWER SUPPLY Line Description Unswitched input voltage to the transceiver VCC supply voltage switched by Q14 and Q15 When the POWER switch is pressed the CPU outputs the PWON control signal to this circuit to turn the HV supply on Common 3V supply for the CPU produced from the VCC supply by CPUSV regulator IC3 The circuit outputs this voltage regardless of the transceiver on off condition Common 8V supply produced from the HV supply by 8V regulator IC2 Common 5V supply produced from the HV supply by 5V regulator Q12 Q13 Receive 8V supply produced by R8 regulator 010 011 using the signal from I O expander IC13 Transmit 8V supply controlled by T8 regulator Q8 Q9 using the TMUT signal fr
89. Continued Parameter Description Toggles the receive attenuate function on and off see Section 3 5 13 Locks unlocks all programmable keys except CALL MONI and to prevent them from being accidentally pressed see Section 3 5 9 Toggles the key beep function on and off see Section 3 3 10 Turns the LCD backlight on and off see Section 3 3 9 Selects the other bank of sixteen channels if applicable Changes the power output for the current channel to the level programmed of the key Pressing the key again reselects the preprogrammed power level for the channel The change may be temporary or per manent for that channel depending on the programming of the RF PWR Selection parameter later in this screen see description which follows Continuous Tone Memory Channel This key selects the continuous tone mode which allows the Call Guard CTCSS tone to be selected from the front panel see Section 3 5 5 These tones are pro grammed by the Continuous Tone screen described in Table 4 4 Toggles the talk around mode on and off see Section 3 5 16 Temporarily toggles between the wide and narrow band modes see Section 3 5 19 When the channel is changed or power is cycled the wide narrow mode programmed for the channel frequency specified in the memory Channel screen is again selected Pressing this key enables the DTMF autodial mode After pressing this key the number to be dialed is selected b
90. F Lack Sean Aetio TX Rx TX PUR 12345 Honi D 1 52080 lt 146 58880n 88 5 lt B 146 19000 156 19000 31 5 186 94000 186 39000 173 8 lt Lag Auta CH Slane Signaling R NR Cali PTT Reset Form APT STH ID Pes Tim E CONT CCIR 123245678 Tim B CONT CCIR 123456718 Tim B CONT CCIR 123456 Te Tim B CONT CCIR 123856 TE Figure 4 2 Memory Channel Screen PMR Models November 1998 4 17 Part No 001 7600 001 PROGRAMMING This page intentionally left blank November 1998 Part No 001 7600 001 4 18 VHF 7610 CIRCUIT DESCRIPTION SECTION 5A VHF 7610 CIRCUIT DESCRIPTION NOTE transceiver block diagram is located on page 8 1 5 1 VHF RECEIVER CIRCUIT 5 1 1 ANTENNA SWITCHING CIRCUIT The antenna switching circuit functions as a low pass filter while receiving and a resonator circuit while transmitting This prevents the transmit signal from entering the receiver in the transmit mode Received signals enter the antenna connector and pass through a low pass filter consisting of L1 L3 CI C3 C8 C10 and C11 C13 The filtered signal is then fed through a quarter wave type antenna switching cir cuit formed by D13 D14 and L13 and applied to the receiver RF circuit 5 1 2 RF CIRCUIT The RF circuit amplifies the frequencies that are within the receive band range and attenuates out of band signals The signal from the antenna swit
91. H 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH 1H 470J T A 022 3906 611 022 3906 063 022 3906 063 022 3906 765 022 3906 079 022 3906 080 022 3906 351 022 3906 614 022 3906 063 022 3906 063 022 3906 063 Description Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 JB 1H 102K T A Ceram C1608 JB 1H 102K T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH 1H 470J T A Ceram C1608 CH 1H 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 CH IH 470J T A Ceram C1608 JB 1C 104KT N Diode MA111 TX Diode DA204U T107 Diode DA204U T107 Diode DA204U T107 Diode MA77 TW Zener MA8051 M TX LCD LD HU10140J LED SML 311YTT86 LED SML 311YTT86 LED SML 311YTT86 LED SML 311YTT86 LED SML 311YTT86 LED SML 311YTT86 LED SML 311YTT86 LED SML 311YTT86 LED SML 311YTT86 LED SML 311YTT86 LCD contact SRCN 2055 SP N W HD6433875A63H S IC S 80742SL A6 T1 S IC 25LC160T I SN Connector 95003 2881 Connector FH12 40S 0 5SV Coil NL 322522T 1R0J Coil NL 322522T 470J 2055 LCD reflector Front Unit All Models 022 3906 551 022 3906 556 022 3906 781 Description 2055 LCD holder Transistor 25 4081 T107 R Transistor DTC144TU T107 Transistor DTA143ZU T107 Transistor DTC144TU T107 Transistor XP4601 TX Transistor 25 4081 T107 R
92. IN UNIT Description Outputs control signal for T5 and R5 regu lator circuits 027 028 main unit High Transmitting detection signal Low Microphone on hook Outputs Tx mute switch Q19 Q23 main unit control signal High Tx muted Output port for beep audio while receiving and 2 5 tone signals while transmitting Outputs signals Outputs AF mute switch IC4 main unit control signal for the receiver circuit High No receive audio is emitted Input port for option connector J2 state main unit Outputs MIC mute control signal High signals are output etc Input port for the CTCSS DTCS IN decode signals Outputs external device control signal High Matched 2 5 tone signals are received Input port for S meter signal Input port for PLL lock voltage Input port for the transceiver s internal temperature Outputs control signal for the AF amplifier regulator circuit High Squelch is open etc Outputs AF filter control signal High Filter out CTCSS or DTCS frequency 5 4 3 VHF EXPANDER IC5 MAIN UNIT Description Output tunable bandpass filter control signals Output port for tunable bandpass filter control signal while receiving and power control signal while transmitting Output port for reference frequency control voltage November 1998 Part No 001 7600 001 5A 6 Outputs recei
93. K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 680J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 120J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 680J T A Ceramic C1608 CH 1H 101J T A Ceramic C1608 CH 1H 101J T A Ceramic C1608 JB 1H 102K T A 7640 UHF Main Unit 022 3906 071 022 3906 087 022 3906 086 022 3906 085 022 3906 600 022 3906 596 022 3906 615 022 3906 609 022 3906 600 022 3906 084 022 3906 085 022 3906 468 022 3906 071 022 3906 087 022 3906 084 022 3906 596 022 3906 615 022 3906 610 022 3906 600 022 3906 085 022 3906 798 022 3906 072 Description Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Tantalum ECSTOJY475R Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB IE 103K T A Ceramic C1608 CH 1H 271J T A Ceramic C1608 CH 1H 271J T A Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB IE 103K T A Ceramic C1608 JB IE 103K T A Ceramic C1608 CH 1H 470J T A Electrolytic ECEV1CA100SR Tantalum ECSTICY475R Ceramic C1608 CH 470J T A Electrolytic ECEV1CA100SR Tantalum ECSTIEY105R Ceramic C2012 JF 1E 104Z T A Electrolytic ECEV1EA221P Electrolytic ECEV1CA100SR Ceramic C1608 JF 1C 104Z T A Ceramic C1608 JB 1H 102K T A Electrolytic ECEV1CA100SR Electrolytic ECEV1CA100SR Ceramic C1608 JF 1C 104Z T A Ceramic C2012 JF 1E 104Z T A Ceramic C1608 JB IE 103K T A C
94. OD 5 HA 00000000 lo 5100 41 2 1 515 5 5 5 5215 5 X al 9 ke gt SL R 5 S ie ajo 2 zz 5 2 5 5 2 z id 9919 S 5 7 9 5 Ses 5 5 ERE s E 28 OL Bo 58 ze 1000 Sezo se 5 38 45 8220 Se as 2 1919 HF 25 ES gezo 778 92 a 10070 55 HHR H vezo Z dg 39 00 4220 11 19 55 Ca 1 R D ih 8 100 W W E 1598 imo z 8 dg 100 9220 m 43 59 2910 t H 4 4 1H 000 lt 9310 Uo 1 6 89 1 1 1H gt E b ss L s z g zea 1000 9 59 zs 4 120 rm UV 5 na I Tas lt mu T 2 7 e229 gt TT i ss awas 1000 gg 8 88 0519 a a2 az 25 Se ed Hideo 1000 1 pueq 1 d9g 1000 1220 58 19 19 E yor 58 x 1088 5 Ivevsa AW 1 ss ofA z NG 1000 5 2 Wi HC La ETT eso ES EE ae H 2 ge z5 Hie 2x 2006 0 u T E amp 1000 ze 0220 x 233 ot 1519 x amp ad 055 Ly 2 LAWL MER um BE x xe 1 4001 88 zd vL ess zS J 58 R i ST 83 9024 88 wi 8 oz vi
95. PC transistors 017 and 018 Transmit switch 023 turns off Q17 and Q18 when the transmitter is disabled November 1998 Part No 001 7600 001 VHF 7610 CIRCUIT DESCRIPTION circuit Buffer 07 08 D5 to transmitter circuit i D7 D8 Buffer i i E to 1st mixer circuit Buffer 06 Loop filter IC2 PLL IC 8 Phase Programmable 2 pal 30 6 MHz signal 3 PLST to the FM IF IC Shift register Le SCK SO 17 x2 Programmable divider s 15 E L x1 Figure 5 3 PLL Circuit VHF 5 2 5 APC CIRCUIT The APC Automatic Power Control circuit pro tects the power amplifier from damage caused by a mismatched antenna load and provides a stable power output Detector D2 detects forward signals and D1 detects reverse signals The combined voltage is at minimum level when a matched antenna load of 50 ohms is present and then increases as it becomes mis matched The detected voltage is applied to pin 9 of inverse amplifier IC6c Power setting voltage T4 is applied to the other input pin 10 as a reference When antenna impedance is mismatched the detected voltage exceeds the power setting voltage The output voltage on pin 8 then decreases which turns Q18 off slightly Q17 then turns off slightly and lowers the voltage applied to the collector of Q1 and the power control input of IC1 This reduces the output power produced by these devices November 1998 Part No 001 7600 001 5 3 VHF PLL CIRC
96. Q2 P15 IRQ1 P14 P12 TMOFH P11 TMOFL TEST P24 SCK3 P25 RXD P26 TXD P27 IRQO P13 TMIG e N 5 BUSY BEEPOUT TONE Ba BEEP 100k DICSIN AW RFATT 25LC160T I SN NOIS Q1 25 4081 Ge UNLK EXEN CSHIFT X1 L3 CR 590 47u OOOOOOOOOOOOOOOOOOOO 9 000000000090900900900900 33 i 34 35 a D6 DTA143ZU 4 MA8051 LIGHT ON 7 5V LIGHT OFF 5 5V TI sasa to MAIN UNIT WITH W3 1 R14 390 069 088 R12 390 344 424 R15 2 2k DS11 2 2k SCK R64 0510 R16 BEEP IS SET BEEP 27 5mV DS4 DS3 DS2 Y 055 DS7 056 052 0511 zz SML 311YTx10 D2 DA204U DTC144TU Q7 I Ipe 2SC4081 3804081 MICE R60 MIC RV 150 GND 10 HANGER A DTC144TU N ber 1 8 11 60000 VHF UHF FRONT UNIT SCHEMATIC UHF 7640 Transistor Basing Diagrams TRANSISTORS AND FET
97. Refer to on line help for more information on parameters in these screens press F1 with parameter selected Model Menu LMR must be selected see Section 4 4 6 Screen Menu Select 2Tone Code CH and program the information in the screen see Table 4 6 Screen Menu Select Memory Channel and pro gram the information under 2 Dec for each channel on which the decoder will be used see Table 4 1 INSTALLATION AND DISASSEMBLY Screen Menu Select Key amp Display Assign and program an option key or the microphone hanger for the monitor function so that the decoder can be re activated when the call is complete see Table 4 2 2 7 3 5 TONE PROGRAMMING Program the transceiver for operation with a five tone module as described in Section 4 Screens that need to be programmed with five tone decoder infor mation are as follows Refer to on line help for infor mation on parameters in these screens press F1 with parameter selected Model Menu PMR must be selected see Section 4 4 6 Select the following in the Screen Menu Rx Code CH and program the information in the screen see Section 4 5 2 Tx Code CH and program the information in the screen see Section 4 5 2 User Tone and program the information in the screen see Section 4 5 2 Memory CH and program the parameters in this screen that are related to 5 tone operation
98. Res ERJ3GEY 101 V 100 ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 101 V 100 ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 391 V 390 ohm Res ERJ3GEY 393 V 39 k ohm Res ERJ3GEY 471 V 470 ohm Res ERJ3GEY 683 V 68 k ohm Res ERJ3GEY 681 V 680 ohm Res ERJ3GEY 683 V 68 k ohm Res ERJ3GEY 101 V 100 ohm Res ERJ3GEY 471 V 470 ohm Res 822 V 8 2 k ohm Res ERJ3GEY 221 V 220 ohm Res 822 V 8 2 k ohm Res 102 V 1 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res 102 V 1 k ohm Res ERJ3GEY 561 V 560 ohm Res ERJ3GEY 222 V 2 2 k ohm PARTS LIST 022 3906 141 022 3906 141 022 3906 143 022 3906 156 022 3906 870 022 3906 875 022 3906 876 022 3906 863 022 3906 863 022 3906 151 022 3906 157 022 3906 685 022 3906 143 022 3906 161 022 3906 143 022 3906 160 022 3906 143 022 3906 160 022 3906 149 022 3906 170 022 3906 151 022 3906 157 November 1998 Part No 001 7600 001 PARTS LIST Description Res ERJ3GEY 100 V 10 ohm Res ERJ3GEY 222 V 2 2 k ohm Res ERJ3GEY 103 V 10 k ohm Res 102 V 1 k ohm Res ERJ3GEY 473 V 47 k ohm S ARRAY EXB V8V 102JV Res ERJ3GEY 101 V 100 ohm Res ERJ3GEY 101 V 100 ohm Res ERJ3GEY 473 V 47 k ohm Res RR0816R 753 D 75 k ohm Res ERJ3GEY 223 V 22 k ohm Res ERJ3GEY 153 V 15 k ohm 7610 VHF Mai
99. Response RF Input Impedance RF Power Output Spurious and Harmonic Emissions FM Hum and Noise Audio Modulation Audio Distortion Audio Frequency Response Maximum Frequency Spread RF Output Impedance Duty Cycle GENERAL VHF 146 174 MHz UHF 400 430 MHz 450 470 MHz 470 490 MHz or 488 512 MHz some performance degradation from 488 490 MHz with 488 512 MHz models Conventional non trunked Tone and digital Call Guard squelch 32 maximum 2 banks x 16 channels available Any frequency within the range 12 5 kHz narrow band and 30 kHz wideband UHF 12 5 kHz narrow band and 25 kHz wideband 12 5 15 kHz channel spacing 2 5 kHz maximum 25 kHz channel spacing 5 0 kHz maximum 5 0 PPM 2 5 PPM from 22 to 140 30 to 60 C 1 6 H x 5 5 W x 6 7 D 4 1 cm x 13 9 cm x 17 0 cm 216 11 oz 1 22 13 6 volts DC nominal 12 volt negative ground vehicle electrical system Standby 200 mA standby Receive rated audio out 700 mA Medium Tx Power 6 0 A VHF 7 0 A UHF High Tx Power 15 max 10 A typ VHF 11 A max 8 A typ Parts 15 and 90 RECEIVER 0 25 uV 70 dB at 25 kHz 60 dB at 12 5 kHz 70 dB 65 dB 46 dB at 25 kHz 40 dB at 12 5 kHz Any spread within the range 3 5 W into 4 ohm load Less than 10 at 1 kHz with 60 deviation 2 8 dB at 6 dB per octave de emphasis 50 ohms TRANSMITTER VHF 45W high 25W low 1 4 5W low 2
100. T 22 AFOUT 21 NC 20 OPCS 19 OPINT 18 80 17 1 16 SCK 1 PTTIN 2 PTTOUT 3 MICOUT 4 NC 6 NC 5 BUSY 7 NC 8 SIGOUT 9 OPT1 10 OPT2 11 12 GND 13 OPV3 14 OPV2 15 1 J1 Front Unit 1 8V 3 CPUSV 5 GND 7 9 OPCS 11 BUSY 13 BEEPOUT 15 TONE 17 BEEP 19 DTCS 21 RFATT 23 NOIS 25 UNLK 27 EXEN 29 EXST 31 DAST 33 PLST 35 VIN 37 TEMP 39 MIC 2 5V 4 AFO 6 SI 8 10 2 12 1 14 OPV3 16 OPV2 18 OVP1 20 22 PTTIN 24 DET 26 PWON 28 EXPTT 30 DIMIN 32 50 34 5 36 50 38 LVIN 40 GND C226 2195 c227 J 052 NO VCC e RED enn BLACK Y J6 5 ts C23 C276 R197 72280 5 S Ha 1 279 RESETA ap 5 7278 8 0219 a 5 LU 7 a e SL C215 5 x Tsv _R5 e 7 2205 SV CI S Cas ciga J4 To Spkr 8 E ens py R226 G 5 e 2 2160 LJ IC8 EJ 110 R159 1110300 R172 R162 ooo R165 R110 A R220 i C197L 295 11 O pg R22 z0 R170 R229 J3 To Opt Cable Fog cis Co 50 23 B R230 E 9 gp 3d 9 1611 J3 8 O o Mr 40 Q O OT ON Q DARK 1 NEISBEBEBERBGEDEDbELEEERE R187 J OO0O00000000000000000 1 155 R188 CI 0000000000000000000 o 2189 C231 200 026 259 Bad 2 40 j pi
101. Transistor 25 4081 T107 R Res ERJ3GEYJ 103 10 k ohm Res ERJ3GEYJ 104 V 100 k ohm Res ERJ3GEYJ 224 V 220 k ohm Res ERJ3GEYJ 104 V 100 k ohm Res ERJ3GEYJ 123 V 12 k ohm Res ERJ3GEYJ 123 V 12 k ohm Res ERJ3GEYJ 105 V 1 M ohm Res ERJ3GEYJ 100 V 10 ohm Res ERJ3GEYJ 821 V 820 ohm Res ERJ3GEYJ 391 V 390 ohm Res ERJ3GEYJ 391 V 390 ohm Res ERJ3GEYJ 222 V 2 2 k ohm Res ERJ3GEYJ 222 V 2 2 k ohm Array EXB V8V 102JV Res ERJ3GEYJ 471 V 470 ohm Res ERJ3GEYJ 471 V 470 ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 100 V 10 ohm Res ERJ3GEYJ 184 V 180 k ohm Res ERJ3GEYJ 563 V 56 k ohm Res ERJ3GEYJ 392 V 3 9 k ohm Res ERJ3GEYJ 393 V 39 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 103 10 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 223 V 22 k ohm Res ERJ3GEYJ 683 V 68 k ohm Res ERJ3GEYJ 273 V 27 k ohm Res ERJ3GEYJ 103 10 k ohm Res ERJ3GEYJ 123 V 12 k ohm Res ERJ3GEYJ 123 V 12 k ohm Res ERJ3GEYJ 473 V 47 k ohm Res ERJ3GEYJ 104 V 100 k ohm Res ERJ3GEYJ 104 V 100 k ohm PARTS LIST 022 3906 791 022 3901 343 022 3906 572 022 3906 785 022 3906 572 022 3906 328 022 3901 343 022 3901 343 022 3906 163 022 3906 175 022 3906 178 022 3906 175 022 3906 164 022 3906 164 022 3906 184 022 3906 138 022 3906 391 022 3906 170 022 3906 154 022 3906 154 022 3906 163 022 3906 163 022 3906 167 022 3906 173 02
102. UIT 5 3 1 PLL CIRCUIT The PLL Phase Locked Loop circuit provides a stable 5 PPM receive first injection and transmit frequency The PLL circuit consists of PLL circuit IC2 a loop filter and reference oscillator A block dia gram of the PLL circuit is shown in Figure 5 3 The signal from VCO Voltage Controlled Oscil lator Q7 Q8 is buffered by Q6 and Q5 and then applied to pin 2 of IC2 The prescaler in IC2 divides the VCO signal down so that it is within the frequency range of the programmable counter A reference frequency generated by reference oscillator and controlled by crystal X1 is applied to pin 15 of IC1 This signal is divided down by a program mable divider and provides the reference input to the phase detector When the VCO is oscillating at the correct frequency the VCO derived input to the phase detector is the same frequency as the reference input 4 The phase detector determines the phase differ ence between these signals and then produces output pulses on pin 8 which are filtered by the loop filter This filter consists of R43 R45 C60 and C61 The output of this filter is the DC control voltage applied to the VCO The phase detector increases or decreases this control voltage to change the VCO frequency 5 3 2 VCO CIRCUIT The VCO signal is amplified by buffer amplifiers Q6 and Q4 and is then applied to switch D5 and D6 The VCO receive injection signal is applied to first mixer Q13 via ban
103. V 1 M ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm 022 3906 184 Description Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 474 V 470 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 470 V 47 ohm Res ERJ3GEYJ 473 V 47 k ohm Res ERJ3GEYJ 223 V 22 k ohm Res ERJ3GEYJ 822 V 8 2 k ohm 470 490 MHz only Res ERJ3GEYJ 123 V 12 k ohm other bands Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEYJ 103 10 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEY 274
104. V 270 k ohm Res ERJ3GEYJ 103 10 k ohm Res 393 V 39 k ohm Res ERJ3GEY 105 V 1 M ohm PARTS LIST 022 3906 181 022 3906 163 022 3906 141 022 3906 171 022 3906 167 022 3906 256 November 1998 Part No 001 7600 001 PARTS LIST 7640 UHF Main Unit Description Res ERJ3GEY 103 10 k ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEY 824 V 820 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 102 V 1 k ohm Res 100 V 10 ohm Res ERJ3GEYJ 471 V 470 ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 823 V 82 k ohm Jumper ERDS2TO Cable OPC 453 Jumper ERJ3GE JPW V Jumper ERJ3GE JPW V Jumper ERJ3GE JPW V Jumper MCRIOEZHJ JPW 000 Jumper MJP 0 4 T Jumper MJP 0 4 T Jumper ERJ3GE JPW V Jumper ERJ3GE JPW V Jumper ERJ3GE JPW V Jumper ERJ3GE JPW V Discriminator CDBCA450CX24 Crystal CR 601 15 300 MHz Description FRONT UNIT VHF AND UHF MODELS Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1E 103K T A Tantalum ECSTOJY 106R Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1H 102K T A Ceram C1608 JB 1E 103K T A Ceram C1608 JB 1H 102K T A Tantalum ECSTIEY474R November 1998 Part No 001 7600 001 022 3906 163 022 3906 154 022 3906 986 022 3906 154 022 3906 154 022 3906 138 022 3906 150 022 390
105. acters may be programmed in the Expert screen see Table 4 8 and used for the positions 3 7 only positions 1 and 2 can display only regular characters To enter a special character press PgUp PgDn to scroll through and select characters TOT Time Out Timer Smartrunk is a trademark of Smartrunk Systems Inc Disables the transmitter on that channel if it is keyed continuously for longer than the programmed time The times for this timer and other related functions are programmed in the Common Screen see Table 4 7 November 1998 4 5 Part No 001 7600 001 PROGRAMMING Parameter RF PWR Table 4 1 Memory Channel Screen Description LMR Models Continued Description Programs the RF power output for the channel High Low1 Low2 This setting can be temporarily or perma nently overridden by the HIGH LOW1 or LOW power option switch if it is programmed see Table 4 2 Lockout Transmit Disable On Busy The following conditions can be programmed Off No restrictions the transmitter can be keyed even while receiving a signal Busy Transmitting is inhibited if the channel is busy carrier present Repeater 1 Transmission is permitted only when 1 receiving a signal on the programmed Call Guard tone or code CTCSS DCTS or 2 when no carrier is being detected Repeater 2 Transmission is permitted when 1 receiving any Call Guard tone or code CTCSS DCTS or 2 when no carrier is being de
106. al GROUP Blink 2 5 Tone Module P N 585 7500 026 is required to utilize the two tone feature TX Code Code ist Tone Frequency Period znd Tone Frequency Period Notang Timer Group Timer Timer Repeat Timer Auto TX Timer Parameter Description Rx Freq 1st 2nd Sets the frequencies for the first and second tones from 250 3300 Hz The closest tone is selected Group Call Programs if the Ist or 2nd tone is used for the group code Text Programs the text that is displayed when a matched 2 tone is received The characters and other information described for TEXT in Table 4 1 also applies to this text Bell Selects the bell indicator condition when receiving a matched 2 tone The following conditions can be programmed Null The bell indicator condition is not changed even when a matched code is received Off The bell indicator goes off On The bell indicator appears until a key is pressed Blink The bell indicator blinks until a key is pressed Turns the Answer Back function on and off This function transmits a 1 kHz single tone for 2 seconds when receiving a matched 2 tone code On activates an external alert such as a horn or buzzer when a matching 2 tone code is received The activa tion time is set by EXO Timer in the Rx Code Common screen see below The optional accessory cable is required to utilize this feature November
107. amplifies the driver signal to the output power level The RF signal from the driver 019 is applied to the power module which produces 35 watts of output power at the antenna jack The amplified signal is fed through antenna switching circuit D3 a low pass filter and APC detec tor and is then applied to the antenna jack The collec tor voltage of driver Q19 and the control voltage on pin 2 of the power module IC5 come from APC tran sistors Q17 and Q18 Transmit switch Q16 turns off Q17 and Q18 when the transmitter is disabled November 1998 Part No 001 7600 001 UHF 7640 CIRCUIT DESCRIPTION D18 40 transmitter circuit to 1st mixer circuit 1C10 PLL IC 8 Phase Programmable 2 detector counter rescaler 45 9 MHz signal to the FMIFIC 17 Programmable divider Shift register c C1 15 Figure 5 6 PLL Circuit UHF 5 6 5 APC CIRCUIT The APC Automatic Power Control circuit pro tects the power amplifier from damage caused by a mismatched antenna load and provides a stable power output One diode in D1 detects forward signals and the other detects reverse signals The combined voltage is at minimum level when a matched antenna load of 50 ohms is present and then increases as it becomes mis matched The detected voltage is applied to pin 6 of inverse amplifier IC4b Power setting voltage T4 is applied to the other input pin 5 as a reference When antenna impedance is mismat
108. an B mode or both can be programmed Operation is as follows Scan A Power On Scan Off see Table 4 5 It starts and stops scanning with no auto restart If the trans mitter is keyed during scanning the scan mode is exited Power On Scan On It stops scanning only until the Auto Reset Timer expires see Table 4 7 If the transmitter is keyed during scanning scan automatically resumes when the Auto Reset Timer expires Scan B Power On Scan or On It starts and stops scanning with auto restart If the transmitter is keyed during scanning scan automatically resumes when the Auto Reset Timer expires Scan list programming key Pressing this key changes the scan list status of the current channel in the current scan list see Section 3 6 2 Pressing a Prio A key selects the Priority A channel and pressing a Prio B key selects the Priority B channel Pressing a Prio A Rewrite key also selects the Priority A channel In addition if it is held the current channel is made the Priority A channel Priority channel sampling is programmed in the Scan List screen see Table 4 5 Toggles the monitor mode on and off This mode deactivates the Call Guard CTCSS DTCSS or 2 tone mute functions see Section 3 4 4 Pressing and holding this key unsquelches the receiver for as long as it is held November 1998 4 7 Part No 001 7600 001 PROGRAMMING Table 4 2 Key and Display Assign Screen Description
109. ayed in place of Emer gency and Log ID Parameter Description Sets the time interval in seconds for each code emission and interval 1st Timer Sets the tone period in seconds for the first DTMF code This period is affected by the scanning period and power saver function delays of receiving transceivers Timer Sets the tone period in seconds for the character same as and same as These codes can be used for control codes on some systems NOTE When these special codes are used for the first code the 151 Timer has priority over this setting November 1998 4 9 Part No 001 7600 001 PROGRAMMING Table 4 4 Continuous Tone Screen Description Wem lt lt 88 5 123 0 124N lt 16 lt 9 Description The continuous tones programmed in this screen are selected by pressing the C Tone CH Ent function key see Table 4 2 and then pressing the up down 4 w keys This allows the user to select the continuous tone being transmitted and received on the current channel To transmit or receive using the codes programmed for the channel in the channel screen see Table 4 1 select TON M using the 4 wv keys Table 4 5 Scan Function Screen Description Scan Mode List Text List 1 M2 Prio A Pri Scn ON M3 Prio A ON 3 Mi Normal Std Scn ON 4 Mi Normal Std Scn 5 Scn Off Parameter Description This screen is used to configure
110. ched the detected voltage exceeds the power setting voltage The output voltage on pin 7 then decreases which turns Q17 off slightly Transistor Q18 then turns off slightly and lowers the voltage applied to the collec tor of Q19 and the power control input of IC5 This reduces the output power produced by these devices November 1998 Part No 001 7600 001 5 7 UHF PLL CIRCUIT 5 7 1 PLL CIRCUIT The PLL Phase Locked Loop circuit provides a stable 2 5 PPM receive first injection and transmit frequency The PLL circuit consists of PLL circuit IC2 a loop filter and reference oscillator A block diagram of the PLL circuit is shown in Figure 5 6 The signal from VCOs Voltage Controlled Oscillator Q23 and Q25 is buffered by Q28 and Q29 and then applied to pin 2 of IC10 The prescaler in IC10 divides the VCO signal down so that it is within the frequency range of the programmable counter A reference frequency generated by reference oscillator X2 is applied to pin 15 of IC1 This signal is divided down by a programmable divider and pro vides the reference input to the phase detector When the VCO is oscillating at the correct frequency the VCO derived input to the phase detector is the same frequency as the reference input 5B 10 The phase detector determines the phase differ ence between these signals and then produces output pulses on pin 8 which are filtered by the loop filter This filter consists of 034 R180 R181 and
111. ching circuit passes through attenuator D13 D14 The attenuator circuit functions only when the attenuator function is assigned to a programmable key It is enabled to mini mize RF amplifier distortion caused by excessively strong receive signals When the attenuator function is turned on CPU IC1 pin 32 switches the voltage level of the ATT line from high to low and then controls the attenuator switch Q35 The D13 D14 current then increases and D13 D14 act as an attenuator This signal is then applied to a two stage tunable bandpass filter controlled by D16 and D17 The fil tered signals are amplified by RF amplifier Q12 and applied to another two stage bandpass filter controlled by D18 D21 These filters attenuate unwanted signals The filtered signal is then applied to the first mixer Q13 The tunable bandpass filters controlled by D16 D21 employ varactor diodes to tune them to the center frequency of the RF passband This gives a wide band width receiver good image response rejection The diodes are controlled by the CPU IC1 via level controller IC5 5 1 3 FIRST MIXER AND FIRST IF CIRCUITS The first mixer circuit converts the received sig nal to a fixed frequency first IF signal of 31 050 MHz The RF signal from the bandpass filter is applied to the first mixer Q13 This signal is mixed with the first LO signal from VCO Q7 Q8 and buffers Q6 Q4 to pro duce the IF signal The 31 050 MHz first IF signal then pass
112. cuit IC11 UHF 7640 CIRCUIT DESCRIPTION The output signal from IC11 on pin 10 is fed to pin 16 of level controller IC12 This device provides deviation control and is also used in the receive mode to provide volume control The level controlled output on pin 15 is fed to pin 3 of switching circuit IC11 The switched output MOD on pin 4 is then applied to the PLL circuit D21 where it frequency modulates the transmit signal Narrow band wideband switch Q35 is connected to the input of the splatter filter IC7a and switched by NWC signal from the I O expander IC13 When NWC is high 035 shifts the filter cut off frequency for narrow band deviation selection 5 6 2 MODULATION CIRCUIT The microphone audio signal modulates the fre quency of transmit VCO 025 The MOD signal from switch IC11 pin 4 changes the reactance of diode D21 and this modulates the frequency of trans mit VCO Q25 The modulated VCO signal is ampli fied by buffer amplifiers Q28 and Q30 and applied to the transmit driver circuit Q21 5 6 3 TRANSMIT DRIVER CIRCUIT The transmit driver circuit amplifies the VCO oscillating signal to the level required by the power amplifier module The RF signal from buffer amplifier Q30 passes through the T R switch D18 and is ampli fied by the buffer amplifiers Q21 Q20 and driver Q19 The signal is then applied to the power amplifier module 105 5 6 4 POWER AMPLIFIER MODULE The power amplifier module
113. cycling power does not change the selected power level Pressing the key again on the channel reselects the preprogrammed level Free Select if banks are not used One block of up to 32 channels is programmed Bank Select if channels are to be programmed as two banks with up to 16 channels each The BANK option switch must be programmed to select the banks see Section 3 3 7 If text is entered it is displayed and a tone sounds for 2 seconds when power is turned on If no text is pro grammed no tone sounds and no message is displayed The characters and other information described for TEXT in Table 4 1 also applies to this text Table 4 3 DTMF Autodial Screen Description Autodial 18003283911 This screen is used to program the DTMF autodial codes that can be transmitted by pressing the DTMF key see Table 4 2 Each location can contain up to 16 characters Allowable characters are 0 9 A D and Press the INS key to toggle between the insert and overwrite modes To clear a location press the spacebar and then Enter Press ALT or ESC to cancel the entered codes before input The code on the Emergency line is transmitted when the Emergency key is pressed see Table 4 2 Likewise the code on the Log ID line is transmitted when the Log ID channel parameter is enabled see Table 4 1 and when the time out timer expires see Table 4 7 With PMR models 4 and 5 are displ
114. d in each location Continuous Tone Displays the screen shown in Table 4 4 which programs nine user selectable Call Guard CTCSS tones Scan List Displays the screen shown in Table 4 5 which programs various parameters for each scan list 2 Tone Code Channel Displays the screen shown in Table 4 6 which programs transceiver operation with a 2 tone option The optional 2 5 Tone Decoder Kit Part No 585 7500 026 is required to use the 2 tone function This screen is displayed with LMR models only see Section 4 4 6 4 3 PROGRAMMING Common Displays the screen shown in Table 4 7 which programs miscellaneous information such as various timer settings Expert Displays the screen shown in Table 4 8 which programs various timers and other information Normally the default value in this screen should not be changed 4 4 4 PROGRAM MENU Print Read lt TR Write gt TR Information Read lt TR Reads the data programmed in the con nected transceiver Write TR Programs the connected transceiver with the current data Information Displays information on the connected transceiver such as the model revision and the Pro gram Comment programmed in the Common screen see Table 4 7 4 4 5 PRINT MENU Mod Print Current Prints the currently displayed data All Prints all data for the selected file 4 4 6 MODEL MENU LMR Selects LMR U S A models Selecting this
115. dpass filter L23 L24 and C116 C118 Likewise the VCO transmit signal is applied to driver 01 via buffer amplifiers 02 and 03 Part of the Q6 output signal is fed back to PLL IC2 as described in the preceding section 5 4 VHF IC PIN DESCRIPTIONS 5 4 1 VHF POWER SUPPLY Line Description Unswitched input voltage to the transceiver supply voltage switched by 025 and 026 When the POWER switch is pressed the CPU outputs the PWON control signal to this circuit to turn the HV supply on Common 3V supply for the CPU produced from the VCC supply by CPUSV regulator IC9 The circuit outputs this voltage regardless of the transceiver on off condition Common 8V supply produced from the HV supply by 8V regulator Q36 Common 5V supply produced from the VCC supply by 5V regulator Q29 Q30 Receive 5V supply produced by R5 regulator Q27 using the 5 signal from I O expander IC IC11 Transmit 5V supply controlled by T5 regulator 028 using the TSC signal from I O expander IC11 5 7610 CIRCUIT DESCRIPTION 5 4 2 VHF CPU IC1 PORT ALLOCATION Description Input port for overvoltage detection from the vehicle power source Outputs clock signal to EEPROM 1 3 PLL IC2 main unit and expanders ICS IC11 main unit etc Input port for the data signal from EEPROM 103 etc Outputs data signal to EEPROM IC3 PLL main unit and expanders 5 IC11
116. e 4 2 determines operation Pressing the key once selects the level on the key and pressing it again selects the programmed level 3 5 12 PRIORITY CHANNEL SELECT Pressing selects the priority A channel and pressing selects the priority B channel The key can also be programmed so that press ing and holding the key makes the current channel the priority channel Refer to Section 3 6 3 for more information 3 5 13 RECEIVE ATTENUATE Pressing the key turns receive signal attenuation on and off Either AT or AT is displayed to indicate the current mode The attenuator can be turned on if nearby strong RF signals such as commercial radio stations or pager transmitters are causing distortion of the receive signal 3 5 14 SCAN SELECT Pressing the SCAN key turns the channel scan feature on and off Refer to Section 3 6 for more information 3 5 15 SCAN LIST PROGRAMMING Pressing the key changes the scan list sta tus of the current channel Refer to the scan list description in Section 3 6 2 for more information 3 5 16 TALK AROUND SELECT The talk around mode causes transmissions to occur on the receive frequency to permit direct mobile to mobile communication when a repeater is being used The talk around mode is turned on and off by pressing the key Either AR ON or AR OF is briefly displayed to indicate the current mode Changing the channel or turning power off causes talk around to rever
117. e can be enabled as described in Section 3 3 6 3 3 4 POWER ON MENU The power on menu is a special menu that can be selected at power on to control various functions Proceed as follows 1 Selectthe power on menu by turning power on with the up and down keys pressed 2 The F1 F4 keys now control the following func tions Press the switch once to select the function OPERATION and then again to return to the normal channel display F1 Minimum volume level see Section 3 3 3 F2 Key beep on off see Section 3 5 4 F3 Backlight on off see Section 3 5 2 F4 Squelch adjust see description which follows 3 To return the F1 F4 keys to the programmed func tions turn transceiver power off and on again with out pressed 3 3 5 CHANNEL SELECTION Channel Scrolling If the keys grammed as keys they can pressed to scroll up or down through the programmed channels Direct Selection The F1 F4 and keys can be programmed to directly select a specific channel These keys are then labeled to CH4 3 3 6 ADJUSTING SQUELCH LEVEL The squelch level is adjusted by programming or selecting the power on menu just described Proceed as follows to use the power on menu 1 Select a non busy channel Then select the power on menu by turning power on with the up and down aly keys pressed 2 Press the F4 option key to select the squelch adjust mode indicated by SQ
118. e negative battery cable 4 Install the antenna according to the manufacturer s instructions The transceiver has a standard UHF connector Check VSWR Reflected power should be less than 4 of forward power VSWR less than 1 5 to 1 2 3 3 POWER CABLE FUSES Each power cable wire is protected by a 20 ampere fuse These fuses are inspected and changed as shown below If a fuse blows locate the cause if possi ble and replace it with one of the same rating Changing 20 Ampere Power Cable Fuses 2 4 USING AN EXTERNAL SPEAKER An external speaker can be plugged into the external speaker jack on the back of the transceiver This speaker should have an impedance of 4 8 ohms and a power handling capability of at least 3 5 watts The internal speaker is automatically disabled when a speaker is plugged into this jack The external speaker jack is a standard 1 8 inch two conductor phone jack 2 5 ACCESSORY CABLE INSTALLATION Optional Accessory Cable Part No 585 7600 027 can be used for connecting accessories such a horn alert or modem to the transceiver It also has an INSTALLATION AND DISASSEMBLY input that can be used to control the backlight see Section 3 3 9 This cable is installed as shown in Figure 2 3 This cable has a standard DB 9 female connector for interfacing to external equipment The pin number ing and functions are as follows DB 9 Female Connector Outside View DB 9 Pin Function LCD backligh
119. e time out occurs Lockout Penalty Timer This is the time that the transmitter is disabled if the user attempts to transmit while in the lockout Transmit Disable On Busy condition Transmitting is disabled for the Lockout Penalty Time even if the lockout condi tion is cleared The lockout feature is programmed on the channel screen see Table 4 1 CTCSS Reverse Burst If CTCSS tone Call Guard signaling is programmed on the channel this sets the length of the reverse burst that is transmitted when the PTT switch is released The reverse burst prevents the squelch tail noise burst in the transceiver receiving the signal November 1998 4 13 Part No 001 7600 001 PROGRAMMING Parameter Power On Password Table 4 7 Common Screen Description Continued Description This turns the password function on and off When it is turned on PWoRd is displayed when power is turned on and a four digit password must be entered to enable the transceiver see Section 3 3 2 The password is pro grammed in User Password above If the STUN function disables the transceiver see Table 4 6 password input is required even if this parameter is programmed Off Dealer Passcode Specifies the six digit code that must be entered to access the following dealer set mode Set Mode Access This enables disables the Dealer Set Mode which allows one transceiver to clone another with identical infor matio
120. e transmitter is disabled by the time out timer The following conditions can be programmed OFF blank No ID code is transmitted Log In The ID code is transmitted when the PTT switch is pressed Log Off The ID code is transmitted when the PTT switch is released Both The ID code is transmitted when the PTT switch is pressed and again when it is released November 1998 Part No 001 7600 001 4 6 PROGRAMMING Table 4 2 Key and Display Assign Screen Description Key amp Display Assign CH Down Scan A Start Stop Scan Add Del Tag Light Moni Moni Scan RF PUR Selection MR CH Individual MR CH Bank Free Free The and F1 F4 option keys can be programmed for the following functions Press the Enter key and then PgUp PgDn to display and then select the desired function Parameter Description No function key disabled Scroll up or down through the programmed channels Holding the key down causes the function to repeat Directly selects Channels 1 2 3 or 4 respectively Toggles the current bank between Bank 1 and Bank 2 This key can be programmed only if the MR CH Bank Free parameter in this screen is programmed Bank Pressing this key toggles scanning on and off In addition pressing and holding the key enables the scan list select mode The current scan list is indicated and it is changed by pressing the up down LY keys Either the Scan A or Sc
121. each of the up to five scan lists that can be selected Channels are assigned to a scan list in the Memory Channel screen described in Table 4 1 and by the TAG key described in Table 4 2 Scanning is turned on and off and a specific scan mode is selected by the SCAN key also described in Table 4 2 Scanning may be enabled at power on see following and by placing the microphone on hook see Hanger Action in Table 4 2 Scan Mode The following conditions are programmable Scan Off Deactivates that scan list so that it cannot be selected M1 Normal Selects normal non priority scanning from the lowest to highest channel M2 Prio A Selects scanning from the lowest to highest channel while checking the Priority A channel If scanning is turned off while receiving a message in the scan mode the transceiver switches to that channel M 3 Prio A Same as Mode 2 except that if scanning is turned off while receiving a message the Priority A channel is selected Programs the text that is displayed while scanning with that scan list selected If OFF is programmed the text is not displayed Instead the alpha tag or channel number programmed for each channel is displayed as the channel is scanned The characters and other information described for TEXT in Table 4 1 also applies to this text November 1998 Part No 001 7600 001 4 10 PROGRAMMING Table 4 5 Scan Function Screen Description Continued Parameter
122. ency Repeat function key is pro grammed see Table 4 2 the transceiver then transmits repeatedly at this interval until an Emergency Cancel code is received Rx EXO Sets the condition of the horn output pin 6 of the optional accessory cable in the receive mode OFF Horn drive control out ON Send to ground when signal is received One use of the ON condition may for some type of simplified repeater system Rx EXO PTT When Rx EXO is programmed On pin 6 of the optional accessory cable is grounded for this period when receiving a signal Normally this parameter is set to O EXPTT Delay Timer Sets the period that the transmitter stays on after the receive signal disappears Tone Mute EXPTT Enables or disables the CTCSS DTCS Call Guard function with an external PTT signal On disables and Off enables CTCSS DTCS Low Beep Frequency Sets the low beep tone frequency for 400 2998 Hz The nearest available frequency is automatically selected High Beep Frequency Sets the high beep tone frequency for 400 2998 Hz The nearest available frequency is automatically selected Character Editor 4 5 UNIQUE PMR EUROPEAN SCREENS Special characters can be designed using this function by enabling the available 14 segments in any combina tion desired The special characters created then can be entered when programming the Text parameters in the various
123. ent Points 6 9 GENERAL INFORMATION SECTION 1 GENERAL INFORMATION 1 1 SCOPE OF MANUAL This service manual contains operation installa tion programming alignment and service information for the EFJohnson 7610 and 7640 mobile transceiv ers 1 2 TRANSCEIVER DESCRIPTION 1 2 1 GENERAL The 7600 series mobile transceivers operate on conventional non trunked channels The 7610 oper ates in the VHF frequency range of 146 174 and the 7640 operates in the UHF frequency range of 400 430 450 470 470 490 or 488 512 Up to 32 channels can be programmed Power output is user selectable or fixed for the following levels Refer to Section 3 1 for more information on features Model High Low1 Low2 7610 VHF 45W 25W 4 5W 7640 UHF 35W 20W 3 5W These transceivers are digitally synthesized and microprocessor controlled Transceiver programming is performed using a PC compatible computer a spe cial EFJohnson programming cable and program ming software see Table 1 1 The alignment proce dure is performed using this same hardware setup a fabricated test cable and special Adjust software included with the programming software see Section 4 1 3 PRODUCT WARRANTY The warranty statement for this transceiver is available from your product supplier or from the War ranty Department EFJohnson 299 Johnson Avenue P O Box 1249 Waseca MN 56093 05 14 This infor mation may also be requested fr
124. er 1998 Part No 001 7600 001 GENERAL INFORMATION 5 30 PM Central Time Monday Friday The Customer Service Department can be reached using one of the following telephone numbers Toll Free 800 328 3911 From within continental United States only International 507 835 6911 FAX 507 835 6969 E Mail First Last Name efjohnson com You need to know the name of the person you want to reach Example jsmith efjohnson com NOTE Emergency 24 hour technical support is also available at the 800 and preceding numbers during off hours holidays and weekends When your call is answered at EFJohnson you will hear a brief message informing you of numbers that can be entered to reach various departments This number may be entered during or after the message using a tone type telephone If you have a pulse type telephone wait until the message is finished and an operator will come on the line to assist you When you enter some numbers another number is requested to further categorize the type of information you need You may also contact the Customer Service Department by mail Please include all information that may be helpful in solving your problem The mail ing address is as follows EFJohnson Customer Service Department 299 Johnson Avenue P O Box 1249 Waseca MN 56093 0514 1 8 FACTORY RETURNS Repair service is normally available through local authorized EFJohnson Land Mobile Radio Service Center
125. er out CTCSS or DTCS frequency 5 7 5 UHF EXPANDER IC12 MAIN UNIT Description Output tunable bandpass filter control signals Output port for tunable bandpass filter control signal while receiving and power control signal while transmitting Output port for reference frequency control voltage November 1998 Part No 001 7600 001 5B 12 Outputs receive transmit passband width control signal High Narrow bandwidth is selected SECTION 6 ADJUSTMENT PROCEDURE ADJUSTMENT PROCEDURE m Program Part No 5 ming Cable 85 7500 031 k D 6 1 GENERAL ae F Han THES 88288 OMWIMIGISE Test Cable Fabricated 4 0 Ohm Speaker Load Figure 6 1 Test Setup 6 1 1 SUGGESTED TEST EQUIPMENT The equipment that should be used to adjust this transceiver is listed in the following table Equipment Grade and Range DC power supply Output voltage Current capacity 13 6 VDC ISA RF power meter Measuring range Freq range Impedance SWR 1 50 W 146 512 MHz 50 ohms Less than 1 2 1 Frequency counter Freq range Freq accuracy Sensitivity 0 1 500 MHz 1 ppm or better 100 mV or better 50 Ohm 50W 0 000 13 6 Volt 17A Power Supply 6 Frequency Monitor Equipment Grade and Range FM deviation
126. eramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A 7640 UHF Main Unit 022 3906 908 022 3906 074 022 3906 604 022 3906 610 022 3906 086 022 3906 597 022 3906 489 022 3906 597 022 3906 615 022 3906 060 022 3906 615 022 3906 615 022 3906 060 022 3906 617 022 3906 066 022 3906 610 022 3906 609 022 3906 610 022 3906 066 022 3906 614 022 3906 614 022 3906 815 022 3906 060 022 3906 600 Description Ceramic C1608 JF 1C 104Z T A Ceramic C1608 JB 1H 392K T A Ceramic C1608 JF 1C 104Z T A Ceramic C1608 CH 1H 220J T A Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 1C 104KT N Ceramic C1608 JB 104K T N Tantalum ECSTOJY475R Ceramic C1608 JB 1C 104KT N Ceramic C1608 JF 1C 104Z T A Ceramic C1608 JB 1C 123K T A Ceramic C1608 JB 1C 104KT N Electrolytic ECEV1EA221P Electrolytic ECEV1AA471UP Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Electrolytic ECEV1CA100SR Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Tantalum ECSTIVY 104R Ceramic C1608 JB 1C 223K T A Tantalum ECSTIVY474R Tantalum ECSTIVY474R Ceramic C1608 JB 1H 102K T A Electrolytic ECEV1CA100SR Ceramic C1608 JB 1H 471K T A Ceramic C1608 JB 1H 472K T A Ceramic C1608 JB 1H 102K T A Tantalum ECST1AY225R Ceramic C1608 JF 1C 104Z T A Electrolytic ECEV 1CA 4R7NR 16V 4 7 Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 080D T A Ceramic C1608 CH 1H 080D T A Ceramic C1608 CH 1H 220J T A Ceramic C1608 CH 1H 220J
127. eramic C2012 JF 1E 104Z T A Electrolytic 25 MV 470 HC Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1C 223K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JF 1C 104Z T A Electrolytic ECEV 1CA 4R7NR 16V 4 7 Electrolytic ECEV1CA100SR Ceramic HM60SJ CH 060D 500V 400 430 MHz Ceramic HM60SJ CH 050D 500V 490 512 MHz Ceramic HM60SJ CH 040C 500V other bands PARTS LIST 022 3906 063 022 3906 525 022 3906 525 022 3906 614 022 3906 614 022 3906 063 022 3906 063 022 3906 928 November 1998 Part No 001 7600 001 PARTS LIST Description Ceramic HM60SJ CH 030D 500V 400 430 MHz Ceramic HM60SJ CH 060D 500V 450 470 MHz Ceramic HM60SJ CH 040C 500V 470 490 MHz Ceramic HM60SJ 020C 500V 490 512 MHz Electrolytic ECEV1EA220SP Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Electrolytic ECEV1EA220SP Ceramic C1608 CH 1H 050B T A Ceramic C1608 CH 1H 080D T A 490 512 MHz Ceramic C1608 CH 1H 080D T A other bands Ceramic C1608 CH 1H 060B T A Ceramic C1608 JB 1H 471K T A Ceramic C1608 JB 1H 471K T A Ceramic C1608 CH 1H 070D T A Ceramic C1608 JB 1H 471K T A Ceramic C1608 CH 1H 080D T A 490 512 MHz Ceramic C1608 CH 1H 100D T A other bands Ceramic C1608 CH 1H 050B T A 490 512 MHz Ceramic C1608 CH 1H 060B T A other bands Ceramic C1608 JB 1H 1
128. es through a pair of crystal filters A B which sup press out of band signals The filtered signal is then amplified by first IF amplifier Q14 and applied to sec ond IF circuit IC3 5 1 4 SECOND IF AND DEMODULATOR CIRCUITS The second mixer circuit converts the 31 050 MHz first IF signal to a 450 kHz second IF signal A double conversion superheterodyne receiver like this improves the image rejection ratio and provides a stable receiver gain FM IF system IC3 contains second mixer limiter amplifier quadrature detector active filter and noise amplifier circuits see Figure 5 1 The first IF signal from IF amplifier Q14 is applied to IC3 pin 16 which is the input to the second mixer section The 31 050 MHz first IF signal is mixed with the 30 600 MHz ond LO signal to produce the 450 kHz second IF sig nal The PLL reference frequency of 15 300 MHz is doubled to produce the 30 600 MHz second LO signal The second IF signal is fed out of IC3 on pin 3 and applied to ceramic filters FI3 and FI4 with narrow band operation or only FI4 with wideband operation bypassing It is then fed back into IC3 on pin 5 and applied to the limiter amplifier and quadrature detector The quadrature detector demodulates the audio signal contained in the second IF signal Com ponents connected to pins 10 and 11 including X3 November 1998 Part No 001 7600 001 VHF 7610 CIRCUIT DESCRIPTION Active FM CF detector
129. es ERJ3GEY 153 V 15 k ohm Res ERJ3GEY 684 V 680 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 684 V 680 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEYJ 333 V 33 k ohm Res ERJ3GEY 154 V 150 k ohm Res ERJ3GEY 393 V 39 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 104 V 100 k ohm Thermistor NTCCF2012 4AH 473KC T Res RR0816R 104 D 100 k ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEY 222 V 2 2 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 473 V 47 k ohm Res MCR50JZHJ 1 k ohm 102 Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 472 V 4 7 k ohm 7610 VHF Main Unit 022 3906 175 022 3906 163 022 3906 183 022 3906 164 022 3906 183 022 3906 163 022 3906 165 022 3906 181 022 3906 173 022 3906 184 022 3906 160 022 3906 171 022 3906 176 022 3906 160 022 3906 184 022 3906 157 022 3906 184 022 3906 184 022 3906 165 022 3906 183 022 3906 163 022 3906 183 022 3906 171 022 3906 169 022 3906 392 022 3906 170 022 3906 160 022 3906 171 022 3906 175 022 3906 175 022 3906 403 022 3906 395 022 3906 184 022 3906 184 022 3906 184 022 3906 175 022 3906 175 022 3906 175 022 3906 157 022 3906 163 022 3906 163 022 3906 171 022 3906 868 022 3906 171 022
130. etector active filter and noise amplifier circuits see Figure 5 4 The first IF signal from IF amplifier Q4 is applied to IC1 pin 16 which is the input to the second mixer section The 46 350 MHz first IF signal is mixed with the 45 900 MHz second LO signal to produce the 450 kHz second IF signal The PLL reference frequency of 15 300 MHz is tripled to produce the 45 900 MHz second LO signal The second IF signal is fed out of IC1 on pin 3 and applied to ceramic filters FI2 and FI3 with narrow band operation or only FI2 with wideband operation bypassing FI3 It is then fed back into on pin 5 November 1998 Part No 001 7600 001 UHF 7640 CIRCUIT DESCRIPTION Active filter AF mute AF signal IC7b switch from IC1 2nd IF filter IC10 CJ VE X2 15 3 MHz IC1 TA31136FN 1st IF from the IF amplifier Q4 NOIS signal to the CPU FRONT unit IC1 AF mute switch IC4a AF power amp Speaker Volume control signal RMUT o Figure 5 5 Audio Switching and Amplifier Circuit UHF and applied to the limiter amplifier and quadrature detector The quadrature detector demodulates the audio signal contained in the second IF signal Com ponents connected to pins 10 and 11 including X1 are part of the quadrature detector The audio signal is fed out on pin 9 IC1 and applied to the AF amplifier circuit 5 5 5 AUDIO AMPLIFIER CIRCUIT The AF audio frequency amplifier circuit pro vides dri
131. g GENERAL INFORMATION nator C512 for example and the model number of the equipment the part is from You may also send your order by mail or FAX The mailing address is as follows and the FAX number is shown in Section 1 7 EFJohnson Service Parts Department 299 Johnson Avenue Box 1249 Waseca MN 56093 0514 1 10 INTERNET HOME PAGE EFJohnson has a site on the World Wide Web that can be accessed for information on the company and such things as products systems and regulations The address is http www efjohnson com November 1998 Part No 001 7600 001 GENERAL INFORMATION This page intentionally left blank November 1998 Part No 001 7600 001 1 4 GENERAL INFORMATION 7610 VHF AND 7640 UHF MOBILE SPECIFICATIONS The following are general specifications intended for use in testing and servicing this transceiver For current advertised specifications refer to the specification sheet available from your sales representative Values are typical and are subject to change without notice Frequency Range Operating Modes Channels Transmit Receive Separation Channel Spacing dual IF Models Maximum Deviation Frequency Stability Dimensions w o controls Weight Supply Voltage Current Drain maximum FCC Compliance Sensitivity 12 dB SINAD Selectivity Spurious and Image Rejection Intermodulation Hum and Noise Maximum Frequency Spread Audio Power Output Audio Distortion Audio
132. g the other channel information down one line Channel Delete Deletes the programming information on the current line and moves the channel information below it up one line Return Exits the menu and returns to the main screen B Frequency Rx Tx Enter the desired frequency for the channel Enter a frequency within the frequency range of the transceiver VHF 136 155 or 146 174 MHz UHF 400 430 450 470 470 490 or 488 512 MHz Channel steps in mul tiples of 5 0 6 25 or 7 5 kHz only If no receive frequency is entered no other data can be programmed on the line Other special functions associated with frequency are as follows Rx Freq Press the backspace key to toggle between wide and narrowband Narrowband is indicated by n to the right of the frequency Press the spacebar to toggle receive inhibit on and off indicated by 1 to the left of the frequency This limits the channel to priority or emergency use only it is not available as a regular channel Tx Freq To enter the same frequency as the receive frequency enter nothing or The lt symbol means same as receive frequency Enter a space to disable transmitting on the channel Tnhibit is then displayed F8 and F9 can be used to cut and paste frequencies Press Enter when the desired frequency has been entered CTCSS DTCS Rx Tx Enters the receive and transmit tone CTCSS Call Guard frequency or digital DTCS Call Gua
133. h is the prompt to enter the six digit Dealer Passcode Enter DI Z K TUI EZEZEEEEZEZZEZEZER User Tone Format This screen is shown below this code using the F1 F4 and down key The it programs special tone frequencies and the 5 tone numbers represented by each key are as follows format information When the correct number is entered SETMODE is displayed If six digits have been entered and this is not displayed an incorrect number may have been entered Repeat starting with step 1 Refer to Section 3 3 2 for more information Number Entered EZS 3 Press the F4 key to select the clone mode The display should indicate CLONE November 1998 001 7600 001 4 16 PROGRAMMING 4 Connect the master transceiver to the slave target 6 When cloning is complete CLONE is displayed by transceiver by plugging the cloning cable into the the master and CLONE by the slave microphone jack of each 7 To clone another transceiver repeat this procedure starting with step 4 5 Turn the slave transceiver on Then momentarily press the POWER switch of the master transceiver 8 To return both the transceivers to normal operation to begin the data transfer reconnect the microphone and cycle power Insert CH Delete CH 585 T 80 030 Rev 1 6 fer Frequency HHZ CTCS5 DTCS Text TOT R
134. hannel see Table 4 1 and selecting Normal does not change that setting For example if the channel is pro grammed T inverse selecting Inverse here results in Normal DTCS For DTCS signaling to work prop erly the polarity of the code in the transmitting and receiving transceivers must be the same Rx DTCS Inverse Functions the same as the preceding Tx DTCS Inverse parameter to change the receive DTCS polarity User CTCSS Freq A non standard CTCSS Call Guard tone from 60 1 300 1 Hz can be programmed It is then selected by pro gramming USER for the CTCSS code in the channel screen see Table 4 1 November 1998 Part No 001 7600 001 PROGRAMMING Table 4 8 Expert Screen Description Continued Parameter Description Emer Sw On Timer Sets the period in seconds that the Emergency function key must be pressed to activate the emergency function An emergency call is initiated by pressing the Emergency key for longer than this time Emer Sw Off Timer Sets the period in seconds that the Emergency function switch must be pressed to cancel an emergency call This must be done before the call is transmitted because once it is transmitted it cannot be canceled Emer Start Repeat Programs the delay and interval period in seconds for emergency calls When the emergency switch is pressed and held the emergency call is transmitted after this delay period If the Emerg
135. hen fed out on pin 7 and also applied to an inter nal noise detector The detected noise signals are rectified and fed out on pin 13 without smoothing The noise signal NOIS is then applied to pin 19 of CPU The CPU analyzes the noise condition and outputs the RMUT signal via expander IC13 This signal con trols AF mute switch IC11a see Figure 5 5 Call Guard CTCSS DTCS Operation The tone Call Guard squelch circuit detects AF signals and opens the squelch only when receiving a signal containing a matching subaudible tone or code CTCSS or DTCS When tone squelch is in use and a signal with a mismatched or no subaudible tone is received the tone squelch circuit mutes the AF signals even when noise squelch is open A portion of the audio signal from amplifier IC7b passes through low pass filter Q5 in the front unit to remove voice signals It is then applied to CPU IC1 on pin 97 via the CTCIN line The CPU detects the CTCSS or DTCS signaling and controls the AF mute switch via I O I O expander IC 13 5 6 UHF TRANSMITTER CIRCUIT 5 6 1 MICROPHONE AMPLIFIER CIRCUIT The microphone amplifier circuit amplifies the microphone audio signal to the level required by the modulation circuit and also provides pre emphasis The microphone audio signal is amplified by 86 and limited by IC8a Pre emphasis is provided by R152 and C180 The signal is then fed to splatter filter IC7a and then to pin 11 of switching cir
136. ial Screen Description 4 4 Continuous Tone Screen Description 4 5 Scan Function Screen Description 4 6 2 Tone Code Channel Screen Description 4 7 Common Screen Description 4 8 Expert Screen Description 6 1 Test Frequencies Test Frequencies 6 2 November 1998 Part No 001 7600 001 2 1 2 2 2 4 2 5 2 6 2 7 3 1 4 1 4 2 5 1 5 2 5 3 5 4 5 5 5 6 6 1 6 2 6 3 6 4 6 6 LIST OF FIGURES Installation Components 2 1 Mounting Bracket Installation 2 2 Accessory Cable Installation 2 3 Cover and Front Panel Removal 2 4 PC Board 2 4 Removing PC Board 2 4 2 5 Tone Module Installation 2 5 7600 Front 1 3 1 Programming Setup 4 1 Memory Channel Screen PMR Models 4 17 Second IF System IC3 VHF 5 2 Audio Switching and Amplifier Circuit WHF 5 2 PLL 5 4 Second IF System UHF 5 8 Audio Switching and Amplifier Circuit UHF 5 8 PLL Circuit 5 10 Test Seip nA oS perpe quq asas 6 1 Screen Display 6 2 Test Cable Schematic 6 2 VHF Adjustment Points 6 5 Beep Tone Level Adjustment 6 7 Adjustm
137. icks are heard These ticks are brief inter ruptions of the audio signal that occur while the trans ceiver changes channels to check the priority channel Another priority channel also can be programmed that can be quickly selected by the key This channel is programmed only to allow quick selection and is not sampled while listening to a non priority channel PROGRAMMING SECTION4 PROGRAMMING Programming Cable PN 585 7500 031 Includes Level Convert Circuit P dd Adapter Cable PN 585 7600 031 Figure 4 1 Programming Setup 4 1 GENERAL 4 1 1 PROGRAMMING SETUP The following items are required to program this transceiver The part numbers of the programming cable and software are shown in Table 1 1 A printer is also recommended for making a hard copy record of the information programmed into the transceiver The programming setup is shown above IBM PC AT or PS 2 compatible computer with one available serial port MS DOS version 5 02 or higher or equivalent Johnson programming cable includes required level converter circuit and adapter cable Johnson programming software 4 1 2 PROGRAMMING CABLES Programming Cable Part No 585 7500 031 and Adapter Cable Part No 585 7600 031 are required to 4 1 connect the computer to the transceiver The prog
138. in use and a signal with a mismatched or no subaudible tone is received the tone squelch circuit mutes the AF signals even when noise squelch is open A portion of the audio signal from amplifier IC7a passes through low pass filter Q5 in the front unit to remove voice signals It is then applied to CPU on pin 97 via the CTCIN line The CPU detects the CTCSS or DTCS signaling and controls the AF mute switch via O expander IC11 5 2 VHF TRANSMITTER CIRCUIT 5 2 1 MICROPHONE AMPLIFIER CIRCUIT The microphone amplifier circuit amplifies the microphone audio signal to the level required by the modulation circuit and also provides pre emphasis The microphone audio signal is amplified by IC7d with R172 and C295 on the output providing pre emphasis The microphone audio signal is then fed to switch IC4 on pin 4 and the switched output signal is on pin 3 This signal is then applied to high pass fil ter IC8a b which attenuates frequencies in the Call Guard CTCSS DTCS range This is the same filter used for receive audio filtering VHF 7610 CIRCUIT DESCRIPTION The signal is then fed to IC7b and IC7c which provide buffering and amplification Deviation limit ing is then provided by level controller IC5 The input to this device is pin 16 and the output is pin 15 The signal is then fed to splatter filter IC6b and switch IC4 The input is on pin 11 and the output is on pin 10 The modulation signal is then applied to the PLL
139. l see note in Table 6 1 6 5 RECEIVER ADJUSTMENTS VHF MODELS 6 5 1 BANDPASS FILTER ADJUST 1 Select the channel on the low end of the band Test Ch 2 146 050 MHz November 1998 Part No 001 7600 001 2 Connect an RF signal generator to the antenna jack Set the output for the channel frequency at a level of 3 2 uV 97 dBm modulated with 1 kHz at the following deviation Wideband 30 kHz Models 3 5 kHz Narrowband 12 5 kHz Models 1 75 kHz 3 Adjust the filters automatically or manually as follows Automatic Adjustment Method 1 Adjusts all filters o Select BPF T1 on the screen and adjust for O Repeat for T2 T4 Reselect BPF TI b Press the F9 key and all filters are automatically adjusted for peak levels Automatic Adjustment Method 2 Adjusts only one filter at a time Select BPF T1 and press F8 to automatically adjust it for a peak level b Repeat for the other three filters Manual Adjustment Connect a SINAD meter with a 4 ohm load to the external speaker jack see Figure 6 4 o b Select BPF T1 and press the adjust keys 4 5 PgUp PgDn or spacebar backspace to obtain minimum distortion c Repeat for the other three filters 6 5 2 SQUELCH ADJUST NOTE The squelch level can also be set from the front panel as described in Section 3 3 6 1 Select the channel on the low end of the operating band Test Ch 2 146
140. l Adjustment November 1998 6 7 Part No 001 7600 001 ADJUSTMENT PROCEDURE UHF ADJUSTMENTS NOTE Perform the preliminary setup described in Section 6 2 before proceeding with these adjustments 6 6 PLL ADJUSTMENT UHF MODELS 1 Remove the bottom cover by removing four screws Connect a DC voltmeter to check point CP1 shown in Figure 6 6 2 Select the channel at the low end of the band Test Ch 1 This is done by pressing the T J arrow keys to highlight Memory CH and then pressing the adjust keys PgUp PgDn spacebar backspace to select the channel 3 In the receive mode the meter reading should be 1 5 volts If this voltage is significantly different adjust L23 it may be necessary to remove the shield 4 Key the transmitter using the switch on the test cable and the meter reading also should be 1 5 volts If this voltage is significantly different adjust L26 5 Unkey the transmitter and select the channel on the high end of the band Test Ch 2 The meter reading in the receive and transmit modes should be 3 5 5 5 volts Replace the bottom cover 6 7 TRANSMITTER ADJUSTMENTS UHF MODELS 6 7 1 REFERENCE FREQUENCY 1 Select the low power channel on the high end of the band Test Ch 2 2 Scroll down to TXF SET on the screen and press Enter Monitor the transmit signal with a fre quency counter and key the transmitter using the test cable switch 3 Adjust for the disp
141. l controlled signal is fed out of IC5 on pin 15 and applied to low pass filter IC6b It is then applied to AF switching circuit IC4 on pin 8 and the switched output is on pin 9 This signal is buffered by IC6d and then amplified by AF amplifier IC10 to provide drive to the speaker 5 1 6 RECEIVER MUTE CIRCUIT Noise Squelch The noise squelch circuit turns off the audio sig nal when no RF signal is being received The squelch circuit is controlled by the amount of noise present in the audio signal Part of the AF signal from pin 9 of FM IF circuit is applied to pin 24 of level controller IC5 This device allows the CPU to control the squelch threshold level The level controlled output signal on pin 23 is applied to IC3 pin 8 which is the input of an internal filter see Figure 5 1 Noise frequencies of about 10 kHz are passed and then fed out on pin 7 and also applied to an internal noise detector The detected noise signal is rectified and fed out on pin 13 without smoothing The noise signal NOIS is then applied to pin 19 of CPU IC1 The CPU ana lyzes the noise condition and outputs the RMUT sig nal via I O expander IC11 This signal controls AF mute switches IC4a and c see Figure 5 2 Call Guard CTCSS DTCS Operation The tone Call Guard squelch circuit detects AF signals and opens the squelch only when receiving a signal containing a matching subaudible tone or code CTCSS or DTCS When tone squelch is
142. layed frequency by pressing the computer adjust keys Unkey the transmitter 4 Press Enter again to select the second adjust chan nel Key the transmitter and adjust for the displayed November 1998 Part No 001 7600 001 6 8 frequency Unkey the transmitter and press Enter again to exit this function 6 7 2 OUTPUT POWER ADJUST 1 Select the high power channel at the low end of the band Test Ch 3 Connect a power meter to the antenna jack Scroll to Power Hi on the screen and key the transmitter using the test cable switch Use the com puter adjust keys to set the following power Unkey the transmitter Repeat for the Low2 Test Ch 4 and Low1 Test Ch 5 power levels High Power 35 watts Low2 Power 20 watts Low1 Power 3 5 watts 6 7 3 FM DEVIATION ADJUST 1 Connect an audio generator to the microphone audio input of the test cable pin 5 shown in Figure 6 3 Set the generator output for 1 kHz at 40 mV rms Select the low power channel at the low end of the band Test Ch 1 On the computer screen scroll to MOD N if setting narrow band deviation or MOD W if setting wideband deviation Monitor the transmit deviation with a communica tions monitor set as follows HPF Off LPF 20 kHz De Emphasis Off Detector P P 2 Key the transmitter using the test cable switch and set the following maximum deviation by pressing the adjust keys PgUp PgDn or
143. lied to pin 1 of the DB9 connector on the optional accessory cable see Light in Table 4 2 3 3 10 BEEP ON OFF The key beep which sounds when keys are pressed can be enabled and disabled by pressing the option switch or pressing F2 in the power on menu described in Section 3 3 4 Either BP ON or BP OF is displayed to indicate the current mode 3 4 RECEIVING AND PLACING CALLS 3 4 1 INTRODUCTION The two calls which can be placed and received are mobile to mobile and telephone calls With tele phone calls the telephone number can be dialed using November 1998 Part No 001 7600 001 a microphone with a telephone keypad or up to seven telephone numbers also may be preprogrammed and then selected by pressing the key see descrip tion in Section 3 5 7 3 4 2 RECEIVING A CALL 1 Turn transceiver power on and set the volume level as described starting in Section 3 3 1 2 Select or scan the channel or channels on which you want to receive the call Refer to Section 3 6 for more information on scanning 3 When the message is received take the microphone off hook and respond Press the microphone push to talk PTT switch to talk and release it to listen 4 When the conversation is finished place the micro phone back on hook The microphone hanger may control features such as scanning and monitoring that are described later 3 4 3 PLACING A CALL 1 Turn transceiver power on and set the volume level
144. ls should be attached to the option keys to indicate the function 2 1 4 POWER SOURCE This transceiver must be connected to a nominal 12 VDC negative ground vehicle electrical system negative battery terminal connected directly to the chassis If the vehicle has some other type of electri cal system a suitable voltage converter is required 2 2 TRANSCEIVER INSTALLATION 2 2 1 SELECTING MOUNTING LOCATION This transceiver is designed for mounting in a location within convenient reach of the operator such as the dash console or floor Since the mounting loca tion can affect safe operation of the vehicle observe the following precautions November 1998 Part No 001 7600 001 INSTALLATION AND DISASSEMBLY Flat washer T T 2 2 Gb Spring washer When using self tapping screws Figure 2 2 Mounting Bracket Installation WARNING Donot mount the transceiver where it may inter fere with the operation of vehicle controls Do not mount the transceiver where the user not easily reach the controls and view the display Donot mount the transceiver where it may cause additional injury in case of an accident Air bags inflate with great force Therefore do not mount this transceiver in the deployment area of an bag In addition do not place other objects in the deployment area or other locations where they could unintentionally move into the deployment area
145. lum ECSTOJY 106R Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1E 103K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 090D T A Ceramic C1608 CH 1H 090D T A Ceramic C1608 CH 1H 560J T A Ceramic C1608 CH 1H 120J T A Ceramic C1608 CH 1H 330J T A Tantalum ECSTIAY225R Ceramic C1608 JB 1H 102K T A Ceram GRM42 6 CH 180J 500PT Ceram GRM42 6 CH 220J 500PT Ceramic C1608 CH 1H 070D T A Ceramic C1608 CH IH 040B T A Ceramic C1608 CH 1H IR5B T A Ceramic C1608 CH 1H 101J T A Ceramic C1608 CH 1H 010B T A Ceramic C1608 JB 1H 102K T A PARTS LIST November 1998 Part No 001 7600 001 PARTS LIST Description Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 101J T A Ceramic C1608 CH 1H 060B T A Ceramic C1608 CH IR5B T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB IE 103K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 040B T A Ceramic C1608 CH IH 101J T A Ceramic C1608 CH IH 010B T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 101J T A Ceramic C1608 CH 1H 080D T A Ceramic C1608 CH IH 050B T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 150J T A Ceramic C1608 CH 1H 560J T A Ceramic C1608 CH 1H 150J T A Ceramic C1608 J
146. m Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEYJ 101 V 100 ohm Res ERJ3GEY 224 V 220 k ohm Res ERJ3GEY 562 5 6 k ohm Res ERJ3GEY 104 V 100 k ohm Res ERJ3GEYJ 101 V 100 ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEY 563 V 56 k ohm Res ERJ3GEY 125 V 1 2 M ohm Res ERJ3GEYJ 153 V 15 k ohm Res ERJ3GEY 333 V 33 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 474 V 470 k ohm Res ERJ3GEY 474 V 470 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEY 473 V 47 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 101 V 100 ohm 022 3906 163 022 3906 160 022 3906 160 022 3906 138 022 3906 151 022 3906 160 022 3906 138 022 3906 138 022 3906 392 022 3906 288 022 3906 177 022 3906 138 022 3906 160 022 3906 160 022 3906 288 022 3906 160 022 3906 147 022 3906 140 022 3906 147 022 3906 163 022 3906 163 022 3906 154 022 3906 167 022 3906 867 022 3906 174 022 3906 163 022 3906 175 022 3906 143 022 3906 178 022 3906 161 022 3906 175 022 3906 143 022 3906 163 022 3906 172 022 3906 856 022 3906 165 022 3906 169 022 3906 171 022 3906 181 022 3906 181 022 3906 163 022 3906 171 022 3906 163 022 3906 163 022 3906 143 Description 7640 UHF Main Unit Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEY 102 1 k ohm Res ERJ3GEY 682 V 6 8 k ohm Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 103 V 10 k ohm Res 471 V 470 ohm Res
147. m on the working disk 4 2 STARTING THE PROGRAM Proceed as follows 1 Start the computer in the DOS mode If the program is not installed on a hard drive insert the program ming disk in drive A 2 Make the directory of the program the current direc tory Then start the program by typing RP7600 Enter 3 The Memory Channel screen described in Section 4 4 3 is then displayed Set or modify the data as desired Make sure to scroll right using the key so the right most screen parameters can be programmed 4 3 SPECIAL KEYS AND FUNCTIONS Information on the various parameters is available in the form of help screens To display information on the currently highlighted function or setting press F1 Pressing ALT or ESC selects the menu on top returns to the previous screen keys or highlighted character keys move the cursor November 1998 Part No 001 7600 001 The Space or backspace key toggle the setting Use the File menu to save the data and exit the program 4 4 MENU FLOW 4 4 1 INTRODUCTION The menu bar along the top of the screen is used to select the various menus that are used to program this transceiver Press the ALT or ESC key to enable this menu bar Then to move horizontally to select a menu use the arrow lt gt keys or type the high lighted letter in the title Then to display the menu and highlight the desired item use the arrow J T keys and then press ENTER to
148. main unit Input port for cloning signal Output port for cloning signal Input for the POWER switch Low POWER switch pushed NOIS signal input port from the FM IF IC3 main unit for noise squelch operation Input port for the PTT switch Low PTT switch pushed Outputs RF attenuator control signal to the attenuator switch 035 on main unit Low Attenuator function on Input port for PLL unlock signal from the PLL IC2 main unit High unlock Outputs control signal for the power switching circuit Q25 on main unit and SV regulator 029 030 main unit Outputs control signal for LCD backlight Low LCD backlight on Input port for the PTT switch from exter nal connector J3 main unit Low nal PTT switch on Input port for the LCD backlight control signal from external connector J3 main unit Low External dimmer switch on Outputs strobe signals for PLL IC2 main unit Outputs strobe signals for level controller 5 main unit Outputs strobe signals for the I O expander IC11 main unit Output ports for the key matrix Input ports for the key matrix November 1998 Part No 001 7600 001 VHF 7610 CIRCUIT DESCRIPTION Description Outputs control signal for beep mute cir cuit 010 High Beep muted Output port for CTCSS DTCS signals Input port for the microphone hanger 5 4 4 VHF PORT EXPANDER IC11 MA
149. meter Freq range Measuring range DC 520 MHz 0 to 10 kHz Audio generator Freq range Output level 67 3000 Hz 1 500 mV Attenuator Power atten Capacity 50 or 60 dB 50W Standard Signal Generator SSG Freq range Output level 146 520 MHz 0 1 pV 32 mV 127 to 17 dBm DC voltmeter Input impedance 50kQ V DC or better Oscilloscope Freq range Measuring range DC 20 MHz 0 01 20V AC millivoltmeter Measuring range 10 mV 10V External Speaker Input Impedance Power Capacity 4Q 5 watts min November 1998 Part No 001 7600 001 ADJUSTMENT PROCEDURE Trimmer Control Software for EFJohnsen 7690 Series Reu 1 8 Supply Voltage TT internal UIN 172 BPTI Lock Voltage TEMPS 172 T2 52 75 T3 72 26 T4 POM 33 218 DTCS Bal Level af REF 134 ug BF Deu 17 d X Squelch Level Power Hi 178 g3 12 117 48 HHHEEERR Power Lij 41 26 MODH 75 HODW 188 E dT E 21 DTCS W 4 Adjusts Current Vol Level TXF Squelch Level RF Power Output FM Deviation DTCS Balance 1 Reference Frequency Rx Bandpass Filter Space A D Read TAB Display parameters FS
150. mit Disable On Busy feature is pro grammed on the channel the transmitter is automat ically disabled if the channel is busy This is indicated by the display flashing and a rapid beeping when the PTT switch is pressed 3 4 5 TIME OUT TIMER The time out timer disables the transmitter if it is keyed continuously for longer than the programmed time If the transmitter is disabled by this feature the transmit indicator MJ turns off and the display flashes and a beeping tone is produced until the PTT switch is released One use of this feature is to prevent a channel from being kept busy for an extended period by an accidentally keyed transmitter It can also prevent pos sible damage to the transceiver caused by transmitting for an excessively long period There is also a penalty timer that may be pro grammed to prevent further transmissions for the pro grammed time after the transmitter is disabled 3 5 PROGRAMMABLE FUNCTIONS 3 5 1 INTRODUCTION The F1 F4 and keys on the front panel can be programmed for the functions shown in OPERATION Table 3 1 Option Key Programmable Functions Description Function Section No Key Label Backlight On Off Bank Select Beep on off Call Guard Tone Select Channel Select uo gt ziimi Zz mi Lvl A Be 0 DTMF Number Select Emergency Switch Lock enable disable Monitor Mode Select Output Power Select
151. model displays unique parameters in various screens for programming a 2 tone option The differences are November 1998 Part No 001 7600 001 PROGRAMMING in the Screen menu see Section 4 4 3 Memory Channel screen see Table 4 1 and DTMF Autodial screen see Table 4 3 PMR Selects PMR European models Selecting this model displays unique parameters for program ming a 5 tone option As with the LMR selection unique parameters are displayed in the Screen menu and Memory Channel and Autodial screens Refer to Section 4 5 for more information on PMR models 4 4 7 SETUP MENU Display Type RS 232C Display Type Select the color or monochrome 1 or 2 display modes RS 232C Selects the computer serial port being used to connect the computer to the transceiver Table 4 1 Memory Channel Screen Description LMR Models Parameter Description Alt EF Johnson R 7600 Series LMR Ent CH No CH Atr CTCSS DTCS RX TX Frequency MHz Text RX TX lt lt lt Inhibit FW 151 62500 E 151 49000 158 58000 162 40000 88 5 91 5 lt B lt Grp 91 Grp 02 Grp 03 F8 F9 2Tone Log IN OFF F8 Ins F9 Del TOT RF Lock Scan Auto out 12345 Reset H L1 L2 12345 Tim B 12345 Tim B 12 5 Tim B NOTE To display this part of the screen scroll over using the arrow key Bank Select Up to 32 channels or two banks of 16 channel
152. n If the transceiver will not be used for cloning the dealer set mode is not used and this parameter should be programmed Inhibit Transceiver Data Out Enables or inhibits the downloading of transceiver programming data using the programming software or when programming one transceiver with another cloning This prevents the unauthorized duplication of program ming data This does not inhibit overwriting of programming data so reprogramming is still possible with this enabled Table 4 8 Expert Screen Description Fast Scan Timer Slow Scan Timer UTCS Inverse BE UTCS Inmveroe User CTCSS Fregi Hz Emer i Timer OFF Timer Stert Repeat EXO EXO Delay Timer Delay Timer Tone Hute EXPTT Frequency Frequency Edi kar Parameter Description Fast Scan Timer Sets the period in seconds that each channel not programmed for CTCSS DTCS Call Guard squelch is scanned NOTE An appropriate time is set by default and if a time less than the default is programmed busy channels may not be detected Slow Scan Timer Sets the period in seconds that each channel programmed for CTCSS DTCS Call Guard squelch is scanned NOTE An appropriate time is set by default and if a time less than the default is programmed busy channels may not be detected Tx DTCS Inverse Selecting Inverse selects the opposite transmit digital DTCS Call Guard code polarity specified for the c
153. n the space provided and also note any prior physical damage to the equipment Then include a form in the shipping container with each unit Your telephone number and contact name are important because there are times when the technicians have specific questions that need to be answered in order to completely iden tify and repair a problem When returning equipment for repair it is also a good idea to use a PO number or some other reference number on your paperwork in case you need to call the repair lab about your unit These numbers are refer enced on the repair order and it makes it easier and faster to locate your unit in the lab Return Authorization RA numbers are not nec essary unless you have been given one by the Field Service Department RA numbers are required for exchange units or if the Field Service Department wants to be aware of a specific problem If you have been given an RA number reference this number on the Factory Repair Request Form sent with the unit The repair lab will then contact the Field Service Department when the unit arrives 1 9 REPLACEMENT PARTS Replacement parts can be ordered directly from the Service Parts Department To order parts by phone dial the toll free number as described in Section 1 7 When ordering please supply the part number and quantity of each part ordered EFJohnson dealers also need to give their account number If there is uncertainty about the part number include the desi
154. n Unit 022 3906 163 022 3906 154 022 3906 171 022 3906 700 022 3906 143 022 3906 143 022 3906 171 022 3906 867 022 3906 167 022 3906 165 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEYJ 105 V 1 M ohm Res ERJ3GEYJ 105 V 1 M ohm 022 3906 184 022 3906 184 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 470 V 47 ohm Res 101 V 100 ohm 022 3906 163 022 3906 141 022 3906 143 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 105 V 1 M ohm Res ERJ3GEY 101 V 100 ohm Res ERJ3GEY 472 V 4 7 k ohm 022 3906 184 022 3906 184 022 3906 143 022 3906 160 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEY 103 V 10 k ohm Res ERJ3GEY 101 V 100 ohm Res ERJ3GEY 221 V 220 ohm Res ERJ3GEY 821 V 820 ohm Res ERJ3GEY 561 V 560 ohm Res ERJ3GEY 152 V 1 5 k ohm 022 3906 163 022 3906 143 022 3906 288 022 3906 153 022 3906 151 022 3906 155 Res ERJ3GEYJ 104 V 100 ohm 022 3906 175 Res ERJ3GEY 471 V 470 ohm Res ERJ3GEYJ 103 V 10 k ohm Res 152 V 1 5 k ohm Res 182 V 1 8 k ohm Res ERJ3GEY 471 V 470 ohm 022 3906 150 022 3906 163 022 3906 155 022 3906 156 022 3906 150 Res ERJ3GEYJ 104 V 100 k ohm 022 3906
155. om I O expander IC13 5B 11 UHF 7640 CIRCUIT DESCRIPTION 5 7 4 UHF CPU IC1 PORT ALLOCATION Description Input port for overvoltage detection from the vehicle power source Outputs clock signal to EEPROM IC3 PLL IC10 main unit and expanders IC12 IC13 main unit etc Input port for the data signal from EEPROM 10 3 etc Outputs data signal to EEPROM IC3 PLL IC10 main unit and expanders IC12 IC13 main unit Input port for cloning signal Output port for cloning signal Input for the POWER switch Low POWER switch pushed NOIS signal input port from the FM IF IC1 main unit for noise squelch operation Input port for the PTT switch Low PTT switch pushed Outputs RF attenuator control signal to the attenuator switch Q1 on main unit Low Attenuator function on Input port for PLL unlock signal from the PLL IC10 main unit High unlock Outputs control signal for the power switching circuit Q14 Q15 on main unit Outputs control signal for LCD backlight Low LCD backlight on Input port for the PTT switch from exter nal connector J5 main unit Low External PTT switch on Input port for the LCD backlight control signal from external connector J5 main unit Low External dimmer switch on Outputs strobe signals for PLL IC10 main unit Outputs strobe signals for level controller IC12 main unit Outputs strobe signals for
156. om the Warranty Department by phone as described in Section 1 7 The Warranty Department may also be contacted for War ranty Service Reports claim forms or any other ques tions concerning warranties or warranty service 1 4 PART NUMBER BREAKDOWN The following is a breakdown of the part number used to identify this transceiver 242 76x x 0 xx Config 2 Std mic 3 With DTMF mic 7 mic Freq Range 0 Full band 1 400 430 3 146 174 450 470 4 470 490 UHP 5 488 512 Band 1 VHF 4 0 Half duplex dual IF high power Signaling 0 Conventional only NOTE Not all configurations are available 1 5 TRANSCEIVER IDENTIFICATION The transceiver identification number is printed on a label that is attached to the chassis The following information is contained in the identification number Model From Revision Manufacture Letter Date Warranty Plant Number 76 23 8 J 12345 J Japan Last Digit of Year 8th Digit of P N 1 6 ACCESSORIES The accessories available for this transceiver are listed in Table 1 1 1 7 FACTORY CUSTOMER SERVICE The Customer Service Department of EFJohnson provides customer assistance on technical problems and the availability of local and factory repair facili ties Regular Customer Service hours are 7 30 AM Novemb
157. onnect the computer test setup using the test cable described in Sections 6 1 3 and 6 1 4 Start the program as described Connect a DC power supply and a 50 ohm 50 watt antenna load to the transceiver see Section 6 1 1 VHF ADJUSTMENTS 6 3 PLL ADJUSTMENT VHF MODELS 1 Remove the bottom cover by removing four screws Connect a DC voltmeter to check point CP1 shown in Figure 6 4 2 Select the channel on the high end of the band Test Ch 1 174 050 MHz This is done by press ing the T 1 arrow keys to highlight Memory CH and then pressing the adjust keys PgUp PgDn spacebar backspace to select the channel 3 Key the transmitter using the switch on the test cable and the meter reading should be 4 3 volts If this voltage is significantly different adjust L14 it may be necessary to remove the VCO shield 4 Unkey the transmitter and the meter reading in the receive mode should be 3 3 4 3 volts November 1998 Part No 001 7600 001 6 4 5 Select the channel on the low end of the band Test Ch 2 146 050 MHz The meter reading should be 0 9 1 9 volt in both the transmit and receive modes Replace the bottom cover 6 4 TRANSMITTER ADJUSTMENTS VHF MODELS 6 4 1 REFERENCE FREQUENCY 1 Select the channel on the high end of the band Test Ch 1 174 050 MHz Scroll down to TXF SET on the screen and press Enter Monitor the transmit signal with a fre quency
158. onnected transceiver is then downloaded and the adjustment screen shown in Figure 6 2 is displayed The information displayed November 1998 Part No 001 7600 001 ADJUSTMENT PROCEDURE VHF ADJUSTMENTS in the upper part of the screen is for the currently selected channel 5 move the cursor between the parameters on the left side of the bar graph press the T J arrow keys To change a parameter press the PgUp PgDn backspace or spacebar keys Refer to the individual adjustment descriptions for more information on the functions performed using this screen 6 1 5 REPROGRAMMING IF EEPROM IS RE PLACED OR ERROR OCCURS When EEPROM IC3 is replaced or if the trans ceiver displays an error message and beeps the fol lowing operation must be performed before making any adjustments 1 Using the programming software read download the data programmed in an exact same version of the transceiver Refer to Section 4 4 4 for more information on reading data 2 Select the MODEL menu and press the down arrow key Type RESERVE and press ENTER The Reserved indicator should begin flashing in the upper right corner of the screen Connect the computer to the transceiver that had the EEPROM replaced or is displaying the error see Figure 4 1 Write the current data to that transceiver 6 2 PRELIMINARY SETUP 1 Preprogram the transceiver with test channels as described in Section 6 1 2 C
159. phone jack a transmit audio and keying PTT signal must be applied to that jack If desired Replication Cable Part No 597 2002 200 can be modified to provide the 8 pin modular style connector required for this test cable ADJUSTMENT PROCEDURE Table 6 1 VHF Test Frequencies Tx Rx Freq MHz 174 050 Test Channel Call Guard Squelch Bandwidth 1 None Narrow or wide 146 050 None Narrow or wide 160 050 None Narrow or wide 160 050 None Narrow or wide 160 050 None Narrow or wide 160 050 007N DTCS Narrow or wide 711 160 050 Low1l None Alternate 1 If the transceiver operates on only narrow or wide band channels program only chan nels 1 6 and program them for the type of channels used narrow or wide band If the transceiver operates on both wide and narrow band channels program additional chamnels 7 and 8 for the other type of operation Table 6 2 UHF Test Frequencies Model see Section 1 4 400 430 MHz 450 470 MHz 470 490 MHz 400 050 450 050 470 050 488 512 MHz Call Guard Squelch Bandwidth 1 490 050 None Narrow or wide 430 050 470 050 490 050 512 050 None Narrow or wide 400 050 450 050 470 050 490 050 None Narrow or wide 400 050 450 050 470 050 490 050 None Narrow or wide 400 050 450 050 470 050 400 050 450 050 470 050 007N DTCS None 490 050 Narrow or wide 490 050 Alternate 400 050 450 050 470 050
160. ram ming cable has a female DB9 connector which plugs into the serial port of the computer In this connector is a level converter circuit which converts the RS 232 levels of the computer to the logic levels required by the transceiver The other end of the cable plugs into the adapter cable which adapts the miniature phone plug to the modular style microphone connector on the transceiver Turn transceiver power on after these cables are connected 4 1 3 PROGRAMMING SOFTWARE The programming software is distributed on a 3 1 2 1 44 M diskette This diskette includes the main executable program RP7600 EXE and several ancil lary files it requires to run These files total approxi mately 430k in size Also included on this disk is the ADJUST program used to tune the transceiver This program and other files it requires to run total about 180k in size and are located in a separate subdirectory November 1998 Part No 001 7600 001 PROGRAMMING on the disk called ADJ The use of this program is described in Section 5 These are DOS programs so Windows 3 x 95 or NT are not required to run them If the program does not run properly in Windows run it in the DOS mode Before you use the program the files on the dis kette should be copied to your hard disk or a program ming disk Do not use the distribution disk for pro gramming or transceiver tuning because it should be kept as a backup in case something happens to the pro gra
161. rd code Press Enter to display the tone selection table Select a tone by scrolling to it and pressing Enter Press the space bar or backspace key to increase or decrease the entered frequency The symbol means same as receive code The length of the CTCSS reverse burst can be set by the CTCSS Reverse Burst parameter on the Common Screen see Table 4 7 A non standard CTCSS tone from 60 1 to 300 1 Hz can be specified on the Expert screen and then selected by USER If a CTCSS tone is selected by the TONE option switch it overrides the channel programming until TON M is reselected Digital codes must always be entered directly there is no table and tone frequencies can be entered directly Be sure to enter the tone decimal point or the number is interpreted as a digital code To toggle the polarity of digi tal codes press the spacebar or backspace key The N or I indicates Normal or Inverted polarity In addition the polarity of digital Call Guard signaling for all channels is set on the Expert screen Programs the 7 character alpha tag that is displayed when a channel is selected If no text is programmed the channel number is displayed as CH xx Allowable characters A Z upper or lower case 0 9 lt gt _ 1 However some characters especially lower case letters may be difficult to see The tx up arrow is displayed by and the rx down arrow by Special char
162. ription Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 471J T A Ceramic C1608 CH 1H 470J T A Tantalum TESVD2 1V 685M 12R Ceramic C1608 JB 1H 102K T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 471J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 102K T A Tantalum ECST1AY106R Ceramic C1608 JB 1H 182K T A Ceramic C1608 CH 1H 391J T A Ceramic C1608 CH 1H 470J T A Ceramic C1608 JB 1H 102K T A Ceramic C1608 CH 1H 101J T A Ceramic C1608 JB 1E 103K T A PARTS LIST November 1998 Part No 001 7600 001 PARTS LIST Description Ceramic C1608 JB 1E 103K T
163. rogrammed Null Scan condition is not affected Cancel Scan is cancelled Start Scan is started See also Scan key in Table 4 2 and Power On Scan in Table 4 5 Description Rx Code Common Screen This item sets the acceptable period between 2 tones When received tones are interrupted for longer than this setting the transceiver does not detect the code Group Timer Programs the 2 tone decoding period in seconds When the received tone is longer than this setting the trans ceiver detects the tone as a group code EXO Timer When the EXO function is programmed On see EXO above the horn drive out pin of the optional accessory cable is grounded for this period when receiving a matched 2 tone code Beep Repeat Timer When Repeat is selected for the above Beep parameter beeps are repeated at this period in seconds Auto Tx Timer When the Auto TX function above is programmed On the transceiver transmits for this set period when receiving a matched 2 tone code Tx Code Screen Code Type Selects the Individual or Group code type 1st 2nd Tone Frequency Sets the frequencies for the first and second tones from 250 3300 Hz The closest tone is selected 1st 2nd Tone Period Sets the period of the first and second tones November 1998 Part No 001 7600 001 PROGRAMMING Table 4 7 Common Screen Description User Password 1235
164. s If local service is not available the equipment can be returned to the factory for repair However it is recommended that you contact the Customer Service Department before returning equipment because a ser vice representative may be able to suggest a solution November 1998 Part No 001 7600 001 1 2 Table 1 1 75xx Accessories Accessory Part No Mounting bracket 585 7600 040 585 7600 029 585 7600 041 023 3514 001 023 7171 911 585 7600 042 DC cable assembly Mounting screws and fuses Microphone hanger Mic hanger ground wire Function name stickers 585 7600 020 585 7600 022 Microphone standard Microphone DTMF 585 7600 026 250 0151 010 585 7600 023 585 7600 027 2 Tone 5 tone module kit 5 4 7 ohm 15W external speaker Compact speaker Accessory data cable DB 9 connector Programming Accessories 585 7600 030 585 7500 031 585 7600 031 597 2002 200 515 9000 015 Programming software 3 1 2 disk Programming cable computer adapter Adapter cable prog cable xcvr Replication cloning cable DB 9 M to DB 25 F adapter to the problem so that return of the equipment would not be necessary Be sure to fill out a Factory Repair Request Form 271 for each unit to be repaired whether it is in or out of warranty These forms are available free of charge by calling Customer Service see Section 1 7 or by requesting them when you send a unit in for repair Clearly describe the difficulty experienced i
165. s ERJ3GEYJ 103 V 10 k ohm Thermistor NTCCF2012 4AH 473KC T Res RR0816R 104 D 100 k ohm Res RR0816R 304 D 300 k ohm Res RR0816R 104 D 100 k ohm Res ERJ3GEYJ 100 V 10 ohm Res ERJ3GEYJ 682 V 6 8 k ohm Res ERJ3GEYJ 682 V 6 8 k ohm Res ERJ3GEYJ 1RO V 1 ohm Res ERJ3GEYJ 102 V 1 k ohm Res ERJ3GEYJ 272 V 2 7 k ohm 450 470 MHz Res ERJ3GEYJ 332 V 3 3 k ohm other bands 022 3906 143 022 3906 164 022 3906 163 022 3906 403 022 3906 395 022 3906 861 022 3906 395 022 3906 138 022 3906 162 Res ERJ3GEYJ 104 V 100 k ohm 022 3906 175 Res ERJ3GEYJ 470 V 47 ohm November 1998 Part No 001 7600 001 022 3906 141 7 16 Description Res ERJ3GEY 103 10 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEYJ 100 V 10 ohm Res ERJ3GEY 561 V 560 ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEYJ 100 V 10 ohm Res ERJ3GEYJ 100 V 10 ohm Res ERJ3GEY 154 V 150 k ohm Res ERJ3GEYJ 221 220 ohm Res ERJ3GEY 184 V 180 k ohm Res ERJ3GEYJ 100 V 10 ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEY 221 220 ohm Res ERJ3GEY 472 V 4 7 k ohm Res ERJ3GEYJ 271 270 ohm Res ERJ3GEYJ 180 V 18 ohm Res ERJ3GEYJ 271 270 ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEYJ 103 V 10 k ohm Res ERJ3GEY 102 V 1 k ohm Res ERJ3GEY 223 V 22 k ohm Res RR0816R 753 D 75 k ohm Res ERJ3GEYJ 823 V 82 k ohm Res ERJ3GEYJ 103 V 10 k oh
166. s can be programmed To program the channels as two banks first program the MR CH Bank Free parameter in the Key and Display Assign screen for Bank as described in Table 4 2 In addition a Bank option switch must be programmed in this screen to select banks To switch between banks when programming channels press the PgUp PgDn keys November 1998 Part No 001 7600 001 4 4 PROGRAMMING Table 4 1 Memory Channel Screen Description LMR Models Continued Parameter Description Ch Atr Channel Attribute Press Enter to display the menu which selects one of the following choices A Priority A The channel is selected when the Prio A key is pressed and it is monitored during priority scan In addition the microphone hanger can be programmed so that this channel is automatically selected when ever an off hook condition occurs see Table 4 2 Priority B The channel is quick selected when the Prio B key is pressed It is not monitored during priority scan E Emergency Channel Transmission occurs on the channel when the Emergency switch is pressed Emergency Off Deletes the emergency designation on current channel if applicable If no emergency channel is designated transmission occurs on the currently selected channel SmarTrunk II On Off Toggles the SmarTrunk function on and off on the bank This function is not available with this transceiver Channel Insert Inserts a blank channel by pushin
167. s910 l Fi Hr ad s 3 E t 1 ge om 4 NN 8 5 1000 wk 3 m 3001 BEY 28 6120 at 7 2 MEE 195 Ko 58 TES WIR 5 7 2 X Ecl MES m z 2 E N Vo sei I es m 8910 100 lt a 58 8120 lp TON so tinu 829 5 608IN glo THE cia 25 s p 5 ESE 28 i 26 100 25 58g Mzo 608IW 1129 E zs Hi HA via B Ina I igi 10070 1000 T 555 t 001 858 2120 d 9120 680 E HH 1009 2000 3 g o puga daz 6 20 a 256661 8 5 cizo pl Sat 2 100 E AHAHAH sta 82 salo Hr 8 nso 5 vu Hurs t 5 a 38 IR IHRE F POS 8 aul pueg 1 dp 0419 Sx 5 pueq H doz dip dzy HIR 16 8 TY so s Z pueq 1 dzz 5120 0820 910 220 441 HR pueg H dooL IH Es 1000 losenaH m naa gta as 102 Ajuo WE 5 8 8 2 ozz cou gt 5 28 90 Bot MH 85 3 819 Wy 1600 8 5 16 5 8s X 85 o pi s 2 vod 4 86L4 a 8 ty 5 38 i Hie wmit 1000 TAWI 5532 25 aX 1000 410 6614 Fe 2555 EIS BE 1000 92 so BA 5581 z 555 5b 2029 losenaH ET Gd OSL vi 555 R lt c 5 ZL cok Rel wt 99 8552 1 A HHH 8
168. screens Up to 16 characters can be programmed and stored in locations A P To enter a special charac ter when programming text press the PgUp or PgDn keys to scroll through and select the desired character Special characters can be displayed in positions 3 7 1 and 2 must be standard characters Screen Menu The LMR menu is described in Sec tion 4 4 3 and the PMR version is shown below 4 5 1 GENERAL Selecting LMR or PMR in the Model menu see Prin Program Section 4 4 6 affects what parameters are displayed in some screens and also what additional screens are dis played Basically selecting the LMR U S A model displays parameters for the 2 tone option and select ing PMR European displays parameters for the 5 tone option NOTE Optional 2 5 Tone Kit Part No 585 7500 026 is required to have the 5 tone function 4 5 2 UNIQUE PMR SCREENS The following menus and screens are different for LMR and PMR models Key amp Display Assign DTMF Autodial Continuous Tone Scan List RX Code CH TX Code CH User Tone Common Expert Memory Channel Screen The LMR version of this screen is shown in Table 4 1 and the PMR version is shown in Figure 4 2 Refer to on line help for infor mation on unique PMR parameters press F1 with the parameter highlighted November 1998 Part No 001 7600 001 PROGRAMMING The following screens selected in the preceding 4 6 CLONING PROGRAMMING ONE Screen menu are unique
169. select it The following describes each of the menus that can be selected 4 4 2 FILE MENU Load Loads data from a previously saved data file To display the directory press Enter again Save Saves the current data to the specified file The extension is automatically added to the file name Delete Deletes the current file Dos Allows you to go to the DOS mode to perform a function in DOS such as copying a file To return to the previous screen type EXIT Exit Quits the program and exits to DOS 4 4 3 SCREEN MENU Prin Channel Key amp Display Assign utodial Continuous Tone Scan List Tome Code CH Common Expert LMR U S Format NOTE The Screen menu for PMR European models is slightly different than the LMR version shown above Refer to Section 4 5 for more information on PMR models Memory Channel Displays the screen shown in Table 4 1 which is used to program channel parame ters such as frequency Call Guard CTCSS DCTS coding and power output The screen in Table 4 1 is for LMR models refer to Section 4 5 for information on the PMR version Key and Display Assign Displays the screen shown in Table 4 2 which assigns functions to the programmable keys DTMF Autodial Displays the screen shown in Table 4 3 which programs five DTMF code channels pre stored telephone or other numbers Up to 24 charac ters can be programme
170. st When a message is detected that the transceiver is programmed to receive scanning stops and the message is received Shortly after the message is complete scanning resumes after the resume timer counts down The selected channel changes to that of the call If the microphone is taken off hook or the trans mitter is keyed while scanning scanning resumes when the auto reset timer selected for the channel counts down Scanning does restart if this timer is dis abled or if the Scan A key is programmed with power on scan disabled see Tables 4 2 and 4 5 Scanning is turned on and off by the key The transceiver also may be programmed so that scan ning automatically turns on whenever power is turned on or the microphone is placed on hook The micro phone must be on hook for scanning to occur The decimal point in the display flashes when the scan mode is enabled Then when scanning is actually occurring either the scan list identification see next section or the rapidly cycling channel identification is displayed as the channels are scanned Programming determines which occurs see Table 4 5 3 6 2 SCAN LISTS Up to five scan lists can be selected by pressing and holding the key until the scan list identifi cation appears and then pressing the w keys Press the key again to exit this mode this also occurs automatically in about 30 seconds and again to enable scanning if desired November 1998 Part No 001 7
171. t control in AF out Detected AF out Modulation in PTT control in Horn drive control out AF ground Detected AF ground Modulation ground DN Figure 2 3 Accessory Cable Installation November 1998 Part No 001 7600 001 INSTALLATION AND DISASSEMBLY 2 6 TRANSCEIVER DISASSEMBLY Removing Bottom Cover and Front Panel 1 Remove the bottom cover by removing four screws A as shown in Figure 2 4 2 Remove the front panel by removing two screws B Figure 2 5 PC Board Screws Figure 2 4 Cover and Front Panel Removal Removing PC Board 3 Remove ten screws C and two clips D as shown in Figure 2 5 4 Remove shield Figure 2 6 Removing PC Board 5 Unsolder the antenna connector at three points F 6 Lift the front of the PC board assembly as shown in Figure 2 6 and pull it out November 1998 Part No 001 7600 001 2 4 2 7 2 TONE 5 TONE MODULE INSTALLATION 2 74 INSTALLATION PROCEDURE 1 Turn power off and disconnect the power cable 2 Remove the bottom cover by removing the four screws A shown in Figure 2 5 3 Install the module as shown in Figure 2 7 The included foam pad is not used with this transceiver Figure 2 7 2 5 Tone Module Installation 2 7 2 2 TONE PROGRAMMING Program the transceiver for operation with a two tone decoder as described in Section 4 Screens that need to be programmed with two tone decoder infor mation are as follows
172. t scanning not be used with these options because in may cause part or all of the tone burst to be missed OPERATION SECTION 3 OPERATION Volume Volume Transmit Busy Bell Monitor Alphanumeric Channel Channel Down Up Indicator Indicator Indicator Indicator Display Up Down iW iW iW Ivi Ivi Un UN UN Vl LAN FARI 2 02 0069 Microphone Scan List Programmable Option Switches Connector Indicator Switch Power The Channel Up Down switches can also be programmed for other functions Figure 3 1 7600 Front Panel 3 1 FEATURES Normal and priority scan to ensure that calls are not missed Up to 32 channels programmable Up to five different user programmable scan lists Multi tone CTCSS and or Multi code CDCSS selectable Call Guard squelch programmable Bank select available up to two banks with sixteen and UHF wideband and narrowband models channels each available User selectable power output available Up to 45 watts VHF and 35 watts transmitter power output DTMF microphone optional Seven character alphanumeric display with back 2 tone 5 tone signaling optional light Six programmable option keys NOTE Some of the preceding features are available Busy indicator only if programmed November 1998 3 1 Part No 001 7600 001 OPERATION 3 2 CONTROLS AND DISPLAY 3 2 1 FRONT PANEL CONTROLS Power Switch PWR Press this switch
173. t to the off condition 3 5 17 2 TONE CALLING FEATURES If the optional 2 tone signaling option is used pressing the key transmits the 2 tone codes on the selected channel or on a non busy channel if pressed while scanning 3 5 18 5 TONE CALLING FEATURES If the optional 5 tone signaling option is used the following keys may be programmed to control various functions Transmit the 5 tone call Depending on your signaling system call transmission may be necessary before you call another station The CAL A and CAL B keys may be programmed when selective Individual Group calls are used Selects the 5 tone code to be transmitted To change the contents of the station code push and hold this key and then press the w keys Selects the transmit code directory Recalls last five codes received Press and hold to erase all codes To scroll press A J 3 5 19 WIDE NARROW BAND SELECT Pressing the key switches the receiver between narrowband and wideband operation The OPERATION display briefly indicates WIDE or NARROW to indicate the current mode Each channel can also be programmed for wide or narrow band operation and this switch toggles that setting However the change is only temporary because the programmed condition is reselected if the channel is changed or power is cycled 3 6 CHANNEL SCAN 3 6 1 INTRODUCTION The channel scan feature monitors the channels in the current scan li
174. tected NOTE If an attempt is made to transmit in a lockout condition transmitting is inhibited for the Lockout Penalty Time programmed on Common screen see Table 4 7 Assigns the channel to up to five scan lists and also programs if the scan list status can be changed by the scan list programming key TAG Press the spacebar to enter or delete all lists or press 1 5 to toggle the status of a list Press the backspace key to toggle the inhibit status Scan list programming is inhibited when parentheses are displayed around the numbers or underline characters Auto Reset If PWR ON Scan is enabled in the Scan screen see Table 4 5 this selects the time delay before scanning resumes after a call is complete the signal disappears or a key is pressed Either Timer A or Timer B can be selected These timers are programmed in the Common Screen see Table 4 7 Auto reset can be turned off by setting the timer to Off 0 2 Tone Enables 2 tone operation on the channel and specifies the 2 tone code used The 2 tone codes are programmed in the 2 Tone Code Ch screen see Table 4 6 This requires the optional 2 5 tone module Log On Off Specifies if the DTMF ID code is transmitted when the PTT switch is pressed and released The DTMF code is specified on the Log ID line of the DTMF Autodial screen Table 4 3 In the Common screen if TOT Timer ID Out is Yes this ID is also transmitted just before th
175. the I O expander IC13 main unit Output ports for the key matrix Input ports for the key matrix November 1998 Part No 001 7600 001 7640 CIRCUIT DESCRIPTION Description Outputs control signal for beep mute cir cuit 010 High Beep muted Output port for CTCSS DTCS signals Input port for the microphone hanger 5 7 6 UHF PORT EXPANDER IC13 MAIN UNIT Description Outputs control signal for R8 regulator Q10 Q11 main unit High Transmit mode detection signal Low Microphone on hook Output port for beep audio while receiving Outputs control signal for T8 regulator Q8 Q9 main unit High Transmitter off and 2 5 tone signals while transmitting Outputs signals Input port for option connector J4 state Outputs AF mute switch IC11 main unit control signal for the receiver circuit High No receive audio is emitted main unit Outputs MIC mute control signal High signals are output etc Input port for the CTCSS DTCS IN decode signals Input port for S meter signal Input port for PLL lock voltage Outputs external device control signal High Matched 2 5 tone signals are received Input port for the transceiver s internal temperature Outputs control signal for the AF amplifier regulator circuit High Squelch is open etc Outputs AF filter control signal High Filt
176. to turn power on and press and hold it to turn power off The trans ceiver may be programmed so that a password must be entered to allow operation Refer to Section 3 3 2 for more information Volume Up Down Keys 4 Adjust the vol ume level up or down in up to 32 steps The minimum selectable volume level can be set as described in Section 3 3 3 Up Down Keys These keys may be pro grammed to select the next higher or lower channel or for other functions Refer to the descriptions in Section 3 5 for more information Microphone Connector Connection point for the microphone Do not connect microphones other than standard microphone P N 589 7600 020 and DTMF microphone P N 589 7600 022 to this transceiver The pin assignments could be different and damage to the microphone or transceiver may result F1 F2 F3 F4 These keys can be programmed to trol any of the functions described in Section 3 5 Place the applicable included label on the switch to indicate its function 3 2 2 DISPLAY Transmit Indicator Indicates that the trans mitter is keyed or the 5 tone code is being sent if appli cable If this indicator is flashing the internal temperature is high and the transmitter power output is being cut back Normal operation automatically resumes when the temperature returns to the normal range Busy Indicator Indicates the currently selected channel is busy see Section 3 4
177. up to seven preprogrammed telephone numbers can be transmit ted Proceed as follows 1 Press the key and the currently selected number is indicated as x 2 Press the channel up down keys 4 w J to select a different number 3 To transmit the selected number on the current channel press and hold the key NOTE The DTMF 6 number is used for emergency calls and the DTMF 7 number is used for automatic logging Therefore if these features are used the number may not be available for regular calls 3 5 8 EMERGENCY KEY Press and hold the key to transmit an emergency call To cancel this call before it is trans mitted press and hold this key again Once emergency November 1998 Part No 001 7600 001 transmission begins the call cannot be canceled Pro gramming determines the channel on which the call is transmitted and also if it is transmitted once or repeat edly until a control code is received 3 5 9 LOCK KEY Press and hold the key to lock all pro grammable keys except and EMER Either LK ON or LK OF is displayed to indicate the current condition If a locked key is pressed all that happens is LOCK is displayed 3 5 10 MONITOR MODE SELECT Refer to Section 3 4 4 3 5 11 OUTPUT POWER SELECT The and keys can be used to temporarily or permanently override the pro grammed power output for the channel The program ming of the RF Power Selection parameter in Tabl
178. ve to the speaker see block diagram in Figure 5 5 The audio signal from IC1 pin 9 is applied to AF amplifier IC7b and then fed to high pass filter IC6c IC6d The cut off frequency of this filter is controlled by the line When is high the cut off frequency is shifted higher to attenuate the Call Guard CTCSS or DTCS signals November 1998 Part No 001 7600 001 The filtered output signal on IC6d pin 14 is applied to pin 8 of AF switching circuit IC11 The switched output signal on IC11 pin 9 is then applied to pin 16 of level controller IC12 This device allows the CPU to control the speaker volume level The vol ume controlled output on pin 15 is then applied to pin 2 of AF switching circuit IC11 The switched output on pin 1 is applied to pin 4 of de emphasis circuit IC4a The signal is then amplified by IC9 to provide drive to the speaker 5 5 6 RECEIVER MUTE CIRCUIT Noise Squelch The noise squelch circuit turns off the audio sig nal when no signal is being received The squelch circuit is controlled by the amount of noise present in the audio signal Part of the AF signal from pin 9 of FM IF circuit is applied to pin 24 of level controller IC12 This device allows the CPU to control the squelch threshold level The level controlled output signal on pin 23 is applied to pin 8 which is the input of an internal filter see Figure 5 4 Noise frequencies are passed and t
179. ve transmit passband width control signal High Narrow bandwidth is selected 7640 CIRCUIT DESCRIPTION SECTION 5B UHF 7640 CIRCUIT DESCRIPTION NOTE The UHF transceiver block diagram is located on page 8 6 5 5 UHF RECEIVER CIRCUIT 5 5 1 ANTENNA SWITCHING CIRCUIT The antenna switching circuit functions as a low pass filter while receiving and a resonator circuit while transmitting This prevents the transmit signal from entering the receiver in the transmit mode Received signals enter the antenna connector and pass through a low pass filter consisting of L1 L3 C2 and C9 C12 The filtered signal is then fed through a quarter wave type antenna switching circuit formed by D4 D5 and L15 and applied to the receiver RF circuit 5 5 2 RF CIRCUIT The RF circuit amplifies the frequencies that are within the receive band range and attenuates out of band signals The signal from the antenna switching circuit passes through attenuator D4 D5 The attenuator cir cuit functions only when the attenuator function is assigned to a programmable key It is enabled to mini mize RF amplifier distortion caused by excessively strong receive signals When the attenuator function is turned on CPU IC1 pin 32 switches the voltage level of the RF ATT line from high to low and then controls the attenuator switch QI The D4 D5 current then increases and D4 D5 act as an attenuator This signal is then applied to a
180. xx 3 Press the down w key until noise is heard from the speaker adjust the volume if necessary Then press the up 4 key until the noise just mutes the SQ xx number indicates the relative squelch level 4 Reselect normal operation by turning power off and on without the up and down keys pressed NOTE If weak messages are not heard or unsquelch ing occurs when no messages are present slight read justment up or down may be required November 1998 Part No 001 7600 001 OPERATION 3 3 7 BANK SELECT Two banks of up to 16 channels each can be pro grammed Only the channels in the current bank are then selectable This would allow for example groups of channels to be programmed for operation in differ ent cities The key is pressed to switch between banks and the current bank is indicated briefly in the display as BANK 1 or BANK 27 If bank select 15 not used a single block of up to 32 channels can be programmed 3 3 8 AUTOMATIC SCAN ENABLE The transceiver can be programmed so that scan ning is automatically enabled whenever power is turned on or the microphone is placed on hook Refer to the scan description in Section 3 6 for more information 3 3 9 BACKLIGHT ON OFF The following backlight modes can be selected by the option switch or by pressing F3 in the power on menu described in Section 3 3 4 LI ON On continuously LI OF Always off LI AT Controlled by the voltage app
181. y the up down 4 keys Then press and hold this key to transmit the number see Sec tion 3 5 7 The available DTMF numbers are programmed by the DTMF Autodial screen described in Table 4 3 Pressing this key transmits an emergency call If Single is programmed it is transmitted only once if Repeat is programmed it is transmitted repeatedly with LMR models or until the proper 5 tone code is received with PMR models The emergency channel is specified by the CH Atr parameter on the Memory Channel screen described in Table 4 1 A code is transmitted if it is entered on the Emergency line of the DTMF Autodial screen see Table 4 3 Additional emergency parameters are programmed in the Expert screen described in Table 4 8 1 key switches the respective pin of the 30 pin option connector high or low this connector is located inside the transceiver and is used for example by the optional 2 5 tone module A OPT1 OPT3 Momentary Out key produces a high or low pulse on the respective pin of this 30 pin connector When equipped with the optional 2 5 tone module transmits the 2 tone or 5 tone code PMR mode w 5 tone option only Transmits code using channel 30 A or 29 B PMR mode w 5 tone option only Selects transmit 5 tone code PMR mode w 5 tone option only Recalls and erases stored codes that have been received This switch is for a SmarTrunk function so it

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