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Sailor RM2042

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3. POWER SUPPLY STRAPPING PIN 1 TELEPHONE CONNECTOR FOR VHF CONNECTOR FOR HANDSET PIN 1 TELEPHONE STRAPPING FOR PIN 2 GND cw w m TL EIN CONNECTION TO IK PIN 3 MIC GND 0 9 9 9 3 N428 249 o PIN 4 MIC TX AF e 5 919 PIN 4 MIC Qs 15 S DE PIN 5 KEY z PIN 5 KEY EN STRAPPING FoR iev ol o 2 PIN RX AF FROM VHF PIN 6 des 5 5V e CONNECTOR FOR 5 5 PIN 7 DISTRESS BUS INTERRUPT PIN 7 DISTRESS a Deem wc e NMEA DATA LINK PIN DATA TX AF PIN 8 28 PIN 8 12V FROM VHF PIN 9 12V FROM VHF Tj wiek ms u Ka 2 L 3 Ta 4 1 8K AY 3388 O 12 a VBAT i 31 ok ue 108 qua es I 5 Ha b 27 mat CONNECTOR FOR D PS 2 EH PC REMOTE DISTRESS UNIT 8 Hi um IS cz 3388 C2149 CIR LI 1 PIN 1 m gt na ws ME PIN 2 RS232 INPUT amp y PIN 3 RS232 OUTPUT vows
4. uiu i Recei 3 ge TRI HET T SES jej 1 I L 3 1 10n zame PITE 4 calas CH FLL a CIG 075 15 302 1 t H pp TT Ted 303 Eto 2 5 S Kami omy JT ysski 75 H uff gezs SE 35s g EE og 28 44 855 of 11 nH 5 1 nH Dieses ala as i s s e 18 681 7 ai RA lS 5 sei Sec g 5 5V ui VBAT 18V c 41 7BL SAC ie 1 Har TO P5 ON out in 190 Ga see 1 m pos me INTERFACE MODULE 1 S Se amo ea GND Swa 3 1 wi Seetis 3 2 EIS 16 SE 5 5 At um E 4 PIN 1 VBAT Baby A cag S PIN 2 IBV _ 1 PIN 3 VHF CARRIER DETECT lep T ECH PIN 4 POWER FAIL 06 07 188 A j PIN 5 RX AF TO SPEAKER 18p BFRS2A BFRS2A ci PIN SIG SW A cs PIN 7 SIG SW B Ale PIN 8 CH 78 CARRIER DETECT Ind Ind Be Be PIN 9 LOOP BACK TEST 5 PE PIN
5. RECEIVER MICROPROCESSOR DISPLAY UNIT Li MODULE 3 MODULE 2 MODULE 4 15 3MHz mae Limit amp R First f E pa AF filt arp mizet pu ES 8 waj A gt a 6 dB oct 5V P5 8 000MHz LCD 1 st local Buffer 1 450kHz ag memory memory Display OSC 2 d IF amer module 141 225 MHz amp filter Detect View angel contrrol IM 1 10 10V reg 5 AF Switch Displ Power fal me Control ET backlight gen pr logic control 4 9152 MHz VO 45V XTAL osc memory ports am amp Y divider AF filt Carri Modulati Rx AF FSK Tx AF HON TE GdB oct Detect TE det logic TE E modem lt ON OFF 1 4 JE u HA uP Cicuit E unit select N decoder INTERFACE MODULE 1 Printer uP I Program strobe control able pulse logic timers gen w reset 12V 24V pe Tx AF NMEA Wiring circ Ert alarmi amps data intf 2 KEYBOARD MODULE 6 Keyboard Real time matrix Fuse rev VHF Printf Intf clock voltage port conn VHF amp C2149 Vec 45V 32 76kHz protection switch serial com VO Ports PC intf on Keyboard EON Voltage B light on off converter Keyboard 1 backlight 9 7 9 25 Power con Handset VHF
6. a sete seter T Sarre a i a 3 io EE a a a o a SD ecg EE a RM2042 Receiver Module 3 1 n External de emphasis Bx filter IT Connected 1 T VHF Radi h l l l l 1 1 1 1 1 U7 4 u2 1 XD Tx data I Wi ki FSK P net encoder RSI_ Requestto send 133 m RED RD Rx data 201 1 Build in de emphasis Rx AF FSK Channel 7 det filter er gt filters decoder CD1 AF Signal detect Receiver 1 1 Channel 70 VHF Carrier detect detect detect CD ez EE Modulation detec Q U5 1 5 554 1 Channel 70 Carrier detect 1 1 1 I l l T ENESTE EEE EEE Pr SET 27542 The truth table for the switch controle signal Q is shown below NOTE The signal CD is generated by means of the Channel 70 Carrier Detect circuit and indicate whether a carrier on channel 70 is received CD 1 if a carrier is detected and CD 0 if no carrier is detected TIS om CH70 used for reception of DSC VHF used for reception of DSC CD VHF used as default for reception of DSG but CH70 used instead if carrier detected PAGE 5 16 9341 9341 5 CIRCUIT DESCRIPTION AND
7. MICROTELEPHONE MICROTELEPHONE CONNECTOR CONNECTOR RED YELLOW bi BROWN 1 2 RED RED e e RED le 1 A gt YELLOW YELLOW k 5e YELLOW b 2 4 WHITE WHITE k 1 WHITE l 1 HAND KEY 1 BLUE BLUE BLUE 51 BLUE GREEN BROWN BROWN BLUE BLACK MIC PRE AMP MC z 49 JE BROWN Connection Board 1 gt 818 BEER 5 0 24281 B ELL WHITE J2 H2089 p u BLUE 6 3 N J d oF 3 gt 4 cable between the Hooks is not factory delivered 7 x 0 14 mm P2 H2089 MICROTELEPHONE 4 74 1 2 3 HANDSET 2 1 46 e 245 L WHITE BUE RED UT YELLOW YELLOW BROWN YELLOW WHITE HAND KEY 2 BLUE 52 BLUE GREEN BLUE BLACK Connection Board 1 5 0 24281 B MIC PRE AMP YELLOW MICROTELEPHONE HANDSET 3 HOOK 2 3 RED r YELLOW YELLOW WHITE HAND KEY 3 BLUE GREEN 1 BLUE BLACK 1 5 0 24281 1 2 3 is shown with microtelephone in Hook BLUE MIC PRE AMP Recommended cable lenght max 20 meters If H2089 is used and if there is Hum or noice problems with the modulations the ground wires white and yellow in P3 must 27779 be seperated Yellow wire on Pin 2
8. SHORTWAVE S130X RM2042 VHF RT2047 RED RED RED YELLOW YELLOW WHITE BROWN BROWN BROWN TC801 TC1 TC1701 HAND KEY S801 HAND KEY 1 HAND KEY 1701 2 P1701 MICPRE AMP P803 MIC PRE AMP 5 MIC PRE AMP HIRSCHMANN BIN m GONNECTOR CONNECTOR BLUE MC801 WHITE MC1 WHITE DONNER TF MC1701 YELLOW 2 c2 Ri gt R o SW VV n u TOmV DIV TOMV DIV 0 5msec DIV 0 5msec DIV MIG PRE AMPLIFIER 100 La I 390 10 18v 9 afz o MES a 215 528 os EG 9 85 85 ch L 2 10 T3 A 12 805470 For TEST R2 C3 BC547C 1k8 547 10 Fr B Gola a Ja 328 ilg E E S L E amp L L S de 28 Same s L o o o O e O 2 4 4 0 24025E 27777A 9716 In orange marked microtelephone cartridge R2 is changed from 1k8 to 5k6 ohm PAGE 6 1 6 MICROTELEPHONE INSTALLATION RM2042 MICROTELEPHONE WITH ELECTRET MIC AMP ECI A S 4 6 24025D 4 0 24025E 60
9. PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN gt PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN 1 Factory defaul Coast station 16 15 14 1 12 STROBE LPT ALARM TONE SIG SW STRB P27 SIG SH A HC7 CARRIER DETECT KEY INPUT REMOTE AL CIRC PC DIST TXRDY NMEA RXRDY VHF TXRDY PC DIST RXRDY RESET RXRDY DISTRESS CH POWER LOW RESET GND LIGHT COL COL COL COL COL COL COL ROH ROW ROW ROH Di GND RESET GND Da GND 03 GND 02 GND 15 GND Da GND 07 16 GND 76800H2 GND GND CS ADC 2 4576 GND CS LPT Az GND CS VHF CS PC DISTRESS CS wa GND 7 CS DAC AR RD GND GND 5V VOLUME ON OFF ONZOFF RS 181 082 083 bi 085 086 087 Di E ADC CS Grounded Not groundel 2 Factory default Not Mounted Coast station Mounted PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN 16 14 1 1 1a VBATT 5V POWER FAIL 5V ON OFF ON OFF ON OFF RX DATA VOLUME MODULATION DETECT TX DATA RELAY CONTRO
10. ea E PIN 4 w 4 5 5 EA PIN 5 GND GND won 28 PIN 6 gm POWER CONNECTOR 4 PIN 2 PIN 1 EXT LOUDSPEAKER Ke 15 ca PIN 8 PIN 2 REMOTE AL CIRC B PIN DISTRESS UNIT SUPPLY PIN 3 BATTERY DOP go mem i te PIN 4 EXT SUPPLY ON OFF if y PIN 5 BATTERY ae 1 PIN E EXT LOUDSPEAKER t all M MEET a un le ca SV It o 190 5 d 2 D 27 X unl nl ror LM 557 28 ma p Uru 1508 Gm VBAT Lie Sri Sj T m Panel nor max 4 717 4 15 VBAT x ore PS zB m 1 zz Lin mE R 7BLESRC cole BC85BB 2 51 vs ut e Sei ie us I 355 og 2 un 5 EL EMI R 2 e rap 5 L3 07 aes 8 al EM t SE 28 Bi owt BE Sle kim I L mim oe PR N CONNECTOR FOR PRINTER PIN 1 STROBE EM PIN 2 DA PIN 3 DI Qs 159 5V PIN 4 D2 2 PIN 5 Di lw PIN 6 D4 mp e nl PIN 7 15 SE PIN 8 16 538 em max 1 E BIN PIN 18 ACKN 314 PIN 11 BUSY a PIN 12 PE 5 PIN 13 SELECT L 1 Las 22 PIN 14 AUT FEED 218 Er 1 PIN 15 ERROR Ad w wg s PIN 16 INIT SE x H PIN 17 SLET IN PIN 18 GND VBAT os 124 PIN 19 GND us 1 PIN 20 GND cA E ou ke 77 5 EIN EL GRD ZU gt PIN 22 GND c RIS EM ax PIN 23 GN
11. RED ko 1 YELLOW YELLOW 1 lo WHITE 1 WHITE 1 1 BLUE I BLUE 51 BLUE GREEN BROWN BLUEIBLACK cz NE connection Board 1 LE 5 0 24281 B HOOK 2 3 BROWN YELLOW YELLOW WHITE 1 BLUE 82 a BLUE GREEN 1 BLUE BLACK Connection Board 1 5 0 24281 B RM2042 NORMAL MICROTELEPHONE program 2000 HANDSET INC HAND KEY 1 MIC PRE AMP MC gt cable between the Hooks is not factory delivered 7 x 0 14 mm MICROTELEPHONE HANDSET 2 HANI MIC PRE AMP MC S1 2 3 is shown with microtelephone in Hook Recommended cable lenght max 20 meters If H2087 is used and if there is Hum or noice problems with the modulations the ground wires white and yellow in P3 must be seperated Yellow wire on Pin 2 and white wire in P7 PAGE 6 3 6 MICROTELEPHONE INSTALLATION RM2042 6 2 SPECIAL INSTALLATION WITH 3 MICROTELEPHONES H2088 FOR SCRAMBLER CRY2001 RE2100 RT2048 AND RT2047 PREPARED FOR DSC H2089 FOR VHF RT2047 AND SSB T2031 MICROTELEPHONE ONE WITH PREFERENCE H2089 H2088 Hook 1 program 2000 HANDSET
12. v Qu go uu x x _ i 3 9 SS 8 QQ m 2 22 pe gt L 9716 Seen from component side with lower side tracks PCB rev 26942L PAGE 5 10 9505 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS MICROPROCESSOR MODULE 2 we 8 Microprocessor 2 u E ur 74HC3930 m 22 D va vo uz s D D 5 n ve 1 5 5V Un v oe dr Mio 8 1 ADDRESSBUS 20 07 DATABUSLIS 07 TM 123 aen weer E we 1a 12 4 22 7 HEH 3 usa 74HC320 aen Jor ESOS en u 2 ws 1 5V LI ume 82651 tias 5 5V Ha va ve m vo vo Ye SCH ten E 1 7 D A 5V we 3 T fs This diagram is valid for PCB rev 26942L
13. 15 6 24HCQ4D 12 5V 14 14 5 5 24HC14Dx i Hi H This diagram is valid for PCB rev 26944F 9915 RM2042 3 RM2151 PS ERR KM 0 0 E O 0 0 0 gt 0 0790 vec 3 gt ul 1074HC174 10 20 RM2042 13 0 55 16 Rel 36 5 R23 182 R24 138 R28 R25 5R6x 4 8 26944 G PAGE 5 25 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 PAGE 5 26 BA 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 5 6 KEYBOARD UNIT MODULE 6 PART NO 625636 The keyboard consist of a 4 times 8 matrix of which 26 keys are used The 4 rows are set high alternately and by reading the output at the 8 columns it is possible to determine which key has been activated This scanning of the keyboard takes place 100 times per second The keyboard can be illuminated by 13 LED s The voltage accross the LED s is controlled by the two transistors Q2 and Q3 placed at the microprocessor module 2 and the current in each LED is roughly 8 5 mA Keyboar
14. SV 1000uF 35WV 14 655 C5 1 CAPACITOR TANTALUM 3528 2u2F 20 16VDC ERO CB 225020 M E17 334 028 C6 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 074 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 08 1 CAPACITOR CERAM SMD 0805 47nF 10 X7R 50VDC MURATA GRM40 473 K 50 PT 328 344 C9 1 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 102 K 50 PT 328 304 C10 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 11 1 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C12 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 104 K 25 328 348 C13 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C14 1 CAPACITOR CERAM SMD 0805 10nF 1096 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C15 1 CAPACITOR ELECTROLYTIC SM 3u3F 20 50VDC EUROPE CHEMICON Al Chip MKV 50V 3u3 M 333 073 C16 1 CAPACITOR MKT 1u5F 10 50VDC ERO MKT 1826 515 05 5 G 11 191 0174 CAPACITOR CERAM SMD 0805 100nF 10 25VDC MURATA GRM40 104 K 25 328 348 C18 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C22 1 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 102 K 50 PT 328 324 02341 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C24 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VD
15. STROBE DO D1 D2 D3 D4 05 06 07 BUSY PE SELECT CONNECTOR FOR PC REMOTE DISTRESS UNIT 27776 PAGE 2 7 PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN 14 15 16 17 18 19 20 21 22 23 24 25 GOO oN AUT FEED ERROR INIT SLCT IN GND GND GND GND GND GND GND GND RS232 INPUT RS232 OUTPUT GND DISTRESS UNIT SUPPLY 9716 3 1 3 2 3 3 3 4 3 5 3 6 3 6 1 3 8 3 9 3 9 1 CONTENTS SERVICE MAINTENANCE ALIGNMENT INSTRUCTIONS PROPOSAL FOR NECESSARY TEST EQUIPMENT TROUBLE SHOOTING PERFORMANCE CHECK ADJUSTMENT PROCEDURE ADJUSTMENT OF INTERFACE MODULE 1 ADJUSTMENT OF MICROPROCESSOR MODULE 2 ADJUSTMENT OF RECEIVER MODULE 9 REPLACEMENT OF COMPONENTS REPLACEMENT OF MODULES NECESSARY ADJUSTMENTS AND CHECK AFTER REPAIR REPAIR REPLACEMENT OF INTERFACE MODULE MODULE 1 REPAIR REPLACEMENT OF MICROPROCESSOR MODULE MODULE 2 REPAIR REPLACEMENT OF RECEIVER MODULE MODULE 9 PIN CONFIGURATIONS RM2042 3 3 3 3 3 6 3 6 3 7 3 8 9403 RM2042 3 SERVICE 3 1 MAINTENANCE PREVENTIVE MAINTENANCE If the VHF DSC RM2042 has been installed in a proper way the maintenance can dependent on the environments and working hours be reducedto a performance check at the service workshop at intervals not exceeding 12 months A complete performance check list is en
16. BERR 46 IPL2 45 IPL1 44 O r U O O 0 r U o NN o mm o o o UUUUUUUUUUOUUUUUU pge grg c p p 2 lt lt lt MSM5165 OKI amp HM6264 HITACHI 28 LEAD FLAT PACK 27PC512 28 LEAD PLCC PACKAGE 4 15 16 1718 1920 5522598 3 14 013 014 015 GND GND A23 A22 A21 20 A19 A18 A17 A16 A15 A14 A13 PROCESSOR STATUS PERIPHERAL M6800 CONTROL SYSTEM CONTROL AO Al A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 5 e e 5 e MEMORY ARRAY 256 ROWS 32 COLUMNS x 8 BLOCK COLUMN 1 0 CIRCUITS COLUMN SELECT RM2042 ASYNCHRONOUS BUS CONTROL BUS ARBITRATION CONTROL INTERRUPT CONTROL O Vee 0 A13 14 A15 E GNPP 15 PWR DWN amp EN gt gt gt gt gt gt gt gt OI Q2 Q3 Q4 Q5 Q6 Q7 08 9403 3 SERVICE RM2042 y 9 2855823585852 2353333835382 wage 28 D P17 Poz C 270 Pts Pos C 26 Pts Pos C 250 pi C 247 P13 NC C uPD71055L 23 Po z2D P12 Poy 20 D etg Poo C 190 P23 RD C 18 D p22 hos BE SZ ZS SE UODOUUUUUUUUD Ee r oO EMMG OSC OSC out in 1 28 27 26 Real Time Clock Counters WR R egege 0 5 zz O IN OSC OUT E Alarm Compars Interrupt an
17. Input pin PCO is used to determine the status of the key input from the PTT Input pin PC1 is used to determine the status of the carrier detect Input pin PC2 is the serial bus interrupt request from the connected VHF Input pin PC3 is a signal from the power fail circuit telling that VBAT is dropping below 10V 4 9152 MHz OSCILLATOR WITH DIVIDER The 4 9152 MHz oscillator is build as a gate oscillator around U16 with the crystal X2 to control the oscillation frequency The oscillator is used as a reference clock for the divider that generates baud rates for syncronus and asyncronus communication PRINTER STROBE GENERATOR When the STRB P27 signal from the interface module goes low U14 2 generates after delay of 215 a 4us logic low strobe pulse to the printer STROBE LPT MODEM COMMUNICATION INTERFACE The modem communication interface U26 is a syncronus 1200 baud receiver transmitter The receiver is controlled by a an external SYNC signal and a syncronus sampling clock The SYNC signal is the MODULATION DETECT signal from the channel 70 receiver When this signal goes high and the first high going edge on RXDATA is detected the syncronus receiver clockis started and RXDATA is sampled Each bit is sampled 8 times RXCLX is 9600 Hz and whenever one bit is received RXRDY goes high and the microprocessor is interrupted Data is then fetched by the microprocessor for further processing U26 converts data it receives via the parall
18. PIN 18 RX DATA PIN 18 ON OFF PIN 18 GND 14141411 141414116 PIN 18 A2 1412 PIN 18 KEY INPUT ed m 3 VHF CARRIER DETECT 11 DATA PIN 11 ON OFF PIN 11 03 gt gt gt PIN 11 CS LPT m PIN 11 CH 78 CARRIER DETECT 10 10 1010610 04641 PIN 4 POWER FAIL PIN 12 MODULATION DETECT PIN 12 0N 0FF PIN 12 Le Lelelelele PIN 12 PIN 12 SIG 5 A gt PIN 5 RX AF TO SPEAKER PIN 13 MODEM TX ON OFF PIN 13 5V PIN 13 D gi Too PIN 13 2 4576MHz PIN 13 STRB P27 PIN 6 SIG PIN 14 RX AF FROM VHF PIN 14 POWER FAIL PIN 14 GND PIN 14 GND PIN 14 SIG SW B TO Je ON PIN 7 SIG SW B PIN 15 TX FSK TO VHF TO J5 ON PIN 15 5V PIN 15 GND TO J3 ON TO 16 ON PIN 15 GND TO JI ON PIN 15 ALARM TONE RECEIVER MODULE 3 PIN 8 CH 78 CARRIER DETECT 16 GND MICROPROCESSOR MODULE 2 PIN 16 PIN 16 DI MICROPROCESSOR MODULE 2 MICROPROCESSOR MODULE 2 PIN 15 758 Hz MICROPROCESSOR MODULE 2 PIN 18 STROBE LPT 4 8 26941K This diagram is valid for PCB rev 26941F SH PAGE 5 5 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 PAGE 5 6 BA 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 5 2 MCROPROCESSOR MODULE 2 PART NO 626942 The microprocessor module contains a micro computer build round a general purpose microprocessor with its basic external control logic memory banks and timers Furthermore the micropro
19. J6 2 SOCKET 2x8 POLES 1 20 PCB VERSION AMP 4 175639 6 376 006 L1 2 CHOKE FIXED 1u0H 10 SIEMENS B78108 T1102 K 20 347 01 2 TRANSISTOR AF NPN BC848B MOTOROLA BC848BLT1 T3 345 048 Q2 2 TRANSISTOR AF NPN BC848B MOTOROLA BC848BLT1 T3 345 048 03 2 TRANSISTOR AF SMALL SIGN SOT23 BC858B MOTOROLA BC858BT1 T3 345 058 04 2 TRANSISTOR AF NPN BC848B MOTOROLA BC848BLT1 13 345 048 R1 2 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R2 2 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R3 2 RESISTOR SMD 0805 270k OHM 5 0 1W ROHM MCR 10 EZH J 274 302 077 R4 2 RESISTOR SMD 0805 1M0 OHM 5 0 1W ROHM MCR 10 EZH J 105 302 084 R5 2 RESISTOR SMD 0805 1 0 OHM 5 0 1W ROHM MCR 10 EZH J 105 302 084 R6 2 RESISTOR SMD 0805 4K7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R7 2 RESISTOR SMD 0805 4k7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R8 2 RESISTOR SMD 0805 4K7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 9 2 RESISTOR SMD 0805 4K7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R10 2 RESISTOR SMD 0805 4k7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R11 2 RESISTOR SMD 0805 56k OHM 5 0 1W ROHM MCR 10 EZH J 563 302 069 R12 2 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R13 2 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R14 2 RESISTOR SMD 0805 56k OHM 5 0 14 ROHM MCR 10 EZH J 563 302 069 R15 2 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R16 2 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZ
20. SMD 0805 56pF 5 N150 50VDC MURATA GRM40 P2H 560 J 50 PT 323 483 PAGE 7 7 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO C83 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C84 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C85 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C86 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C87 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C88 3 CAPACITOR CERAM SMD 0805 1nOF 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C89 3 CAPACITOR CERAM SMD 0805 10pF 5 N150 50VDC MURATA GRM40 P2H 100 D 50 PT 323 474 C90 3 CAPACITOR CERAM SMD 0805 89pF 5 N150 50VDC MURATA GRM40 P2H 390 J 50 PT 323 481 C91 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C92 3 CAPACITOR CERAM SMD 0805 270pF 5 NPO 50VDC TDK C2012 COG 1H 271 J T NiBa 323 091 C93 3 CAPACITOR CERAM SMD 0805 27pF 5 NPO 50VDC TDK C2012 COG 1H 270 J T NiBa 323 079 C94 3 CAPACITOR CERAM SMD 0805 270pF 5 NPO 50100 TDK C2012 COG 1H 271 J T NiBa 323 091 C95 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C96 3 CAPACITOR CERAM SMD 0805 150pF 5 NPO 50VDC TDK C
21. When RM2042 is turned on and a message appears telling that the time has stopped running the battery may be extinct and has to be replaced I O PORTS The port IC U22 contains three 8 bit parallel ports which is used to scan the keyboard and to control the various hardware settings in the the system Input pin PAO is used for setting service mode A low level input sets RM2042 in service mode Input pins PA1 PA7 and output pins PC4 PC7 are used to scan the 7x4 keyboard matrix A logical low pulse on an input pin means a key is currently being pressed Output pin PBO controls the keyboard light A logical high turns the keyboard light on and a logical low turns the keyboard light off Output pins PB1 and PB3 are used to control the signal switch unit on the receiver module A logical high output on pin PB2 is used to tell the scrambler CRY2001 that the connected VHF is on channel 16 PAGE 5 8 SEN 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 Output pin PB4 is used to control a remote alarm circuit Output pin PB5 is used to control the relay on the interface module Output pin PB6 is used to control output from the syncronus transmitter U26 and the modem IC on the receiver module logic low level starts the transmission and a logical high level ends the transmission Output pin PB7 is used to control the generation of alarm tones by U21 1 A logical low disables and a logical high enables the output from U21 1
22. 0 1W ROHM MCR 10 EZH J 473 302 068 R19 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 R20 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 R21 3 RESISTOR SMD 0805 1k5 OHM 5 0 1W ROHM MCR 10 EZH J 152 302 050 R22 3 RESISTOR SMD 0805 820 OHM 5 0 1W ROHM MCR 10 EZH J 821 302 047 R23 3 RESISTOR SMD 0805 1k8 OHM 5 0 1W ROHM MCR 10 EZH J 182 302 051 R24 3 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R25 3 RESISTOR SMD 0805 1k5 OHM 5 0 1W ROHM MCR 10 EZH J 152 302 050 R26 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 R27 3 RESISTOR SMD 0805 68k OHM 5 0 1W ROHM MCR 10 EZH J 683 302 070 R28 3 RESISTOR SMD 0805 470k OHM 5 0 1W ROHM MCR 10 EZH J 474 302 080 R29 3 RESISTOR SMD 0805 82k OHM 5 0 1W ROHM MCR 10 EZH J 823 302 071 R30 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R31 3 RESISTOR SMD 0805 68k OHM 5 0 1W ROHM MCR 10 EZH J 683 302 070 R32 3 RESISTOR SMD 0805 89k OHM 5 0 1W ROHM MCR 10 EZH J 393 302 067 R33 3 RESISTOR SMD 0805 270k OHM 5 0 1W ROHM MCR 10 EZH J 274 302 077 R34 3 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R35 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 J 103 302 060 R36 3 PRESET SEALED 50k OHM 25 0 1W BOURNS 3374X 1 503 E G 310 450 R38 3 RESISTOR SMD 0805 3k9 OHM 5 0 1W ROHM MCR 10 EZH J 392 302 055 R39 3 RESISTOR SMD 0805 27k OHM 5 0 1W ROHM MCR 10 EZH J 273 302 065 R40 3 RESISTOR SMD 0805 27k OHM 5 0 1W ROH
23. 0 5 kg Mounting kit H2072 0 1 kg VHF RT2048 3 2 kg VHF DSC RM2042 2 0 kg PAGE 2 1 2 INSTALLATION RM2042 H2067 MOUNTING BRACKET FOR TABLETOP BULKHEAD OR DECKHEAD MOUNTING FOR MINI 1 4 BOX This mounting bracket is used when RM2042 is to be mounted next to other units in the Compact 2000 programme mounted in H2055 mounting brackets For example when installing the RM2042 next to the HF SSB RE2100 it is possible to tilt both units in the same angle H2067 115mm 27582 min 60mm 55mm 55mm min 90mm 225mm Li dimensions when using a right angled VHF plug dimensions when using a standard VHF plug min 80mm 55mm 55mm 100mm7 SE Weight Mounting kit 2067 0 5 kg VHF DSC RM2042 2 0 kg o Soc 3 3 824 55 27566A PAGE 2 2 2 INSTALLATION RM2042 H2057 ANGLE HINGES FOR TABLETOP BULKHEAD OR DECKHEAD MOUNTING FOR MINI 1 4 BOX H2057 is designed for stationary installation It offers a lot of mounting possibilities using the different holes in the angle hinges when tilting the VHF DSG H2057 max 177mm min 99mm 000 000 0000000000 O0O0000000GQ max 177mm dimensions when using a right angled VHF plug dimensions when using a standard VHF
24. 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R50 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R51 1 RESISTOR SMD 0805 1k0 OHM 5 0 1W ROHM MCR 10 EZH J 102 302 048 R52 1 RESISTOR SMD 0805 4K7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R53 1 RESISTOR SMD 0805 4k7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R54 1 RESISTOR SMD 0805 4k7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R55 1 RESISTOR SMD 0805 4K7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R56 1 RESISTOR SMD 0805 4k7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R57 1 RESISTOR SMD 0805 4K7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R58 1 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R59 1 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM 10 EZH J 101 302 036 R60 1 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R61 1 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R62 1 RESISTOR SMD 0805 1k0 OHM 5 0 1W ROHM MCR 10 EZH J 102 302 048 R63 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R64 1 RESISTOR SMD 0805 3k9 OHM 5 0 1W ROHM MCR 10 EZH J 392 302 055 R65 1 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R66 1 RESISTOR SMD 0805 390 OHM 5 0 1W ROHM 10 EZH J 391 302 043 R67 1 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R68 1 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R69 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R70 1 RESISTOR SM
25. 335 422 0584 CAPACITOR CERAM SMD 1206 1u0F 20 80 Y5V 16VDC MURATA GRM42 6 Y5V 105 Z 16 PT10 328 806 C59 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C60 1 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C61 1 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 50 PT 328 324 C62 1 CAPACITOR CERAM SMD 1206 100nF 10 X7R 50VDC MURATA GRM42 6 X7R 104 K 50 PT 328 648 C63 1 CAPACITOR TANTALUM 3528 2u2F 20 16VDC ERO CB 225020 M E17 334 028 C64 1 CAPACITOR ELECTROLYTIC SM 20 50VDC EUROPE CHEMICON Al Chip MKV 50V 3u3 M 333 073 C65 1 CAPACITOR TANTALUM 3528 2u2F 20 16VDC ERO CB 225020 M E17 334 028 01 1 DIODE RECTIFIER 1N4002 100V 1A MOTOROLA 1N4002 03 04 05 06 07 RL 25 100 D2 1 DIODE ZENER 20V 5 SMC SMC20A GENERAL INSTRUM TSMC20A 57 59 341 430 03 1 DIODE SMALL SIGNAL SOD 80 FBAS32L PHILIPS BAS32L 340 032 04 1 DIODE SMALL SIGNAL SOD 80 BAS32L PHILIPS BAS32L 340 032 D5 1 DIODE ZENER 5 1V 2 0 5W SOD 80 TFK TZM B5V1 340 417 D6 1 DIODE SMALL SIGNAL SOD 80 FBAS32L PHILIPS BAS32L 340 032 07 1 DIODE SMALL SIGNAL 500 80 FBAS32L PHILIPS BAS32L 340 032 D8 1 DIODE SMALL SIGNAL 500 80 FBAS32L PHILIPS BAS32L 340 032 FUSE 2AF 5x20mm LITTELFUSE 217002 45 556 FP1 1 EMI FERRITE BEAD 4 5x1 6x1 6mm 0 54 MURATA BLM 41 A 800 S PT 370 031 FP2 1 EMI FERRITE BEAD 4 5x1 6x1 6mm 0 5A MURATA BLM 41 A 800 5 PT 370 081 SOCKET SUB D 9 POLES PCB VERSION 2x 4 40 NUT EDA IN
26. 769 X32 CRYSTAL 32 768kHz NDK U 2065 39 765 RECEIVER MODULE 3 RM204 RM2042 ECI A S 5 0 26943E 4 0 26943J 626943 POSITION DESCRIPTION MANUFACTOR TYPE PART NO C1 3 CAPACITOR CERAM SMD 1206 1n0F 10 X7R 500VDC MURATA GRM42 6 X7R 102 K 500 PT 324 688 C2 3 CAPACITOR CERAM SMD 0805 2p7F 0 25pF NPO 50VDC MURATA GRM40 COG 2R7 C 50 PT 323 067 63 3 CAPACITOR CERAM SMD 0805 1p0F 0 25pF NPO 50VDC C2012 COG 1H 010 C T NiBa 323 062 64 3 CERAM SMD 1206 1n0F 10 X7R 500VDC MURATA GRM42 6 X7R 102 K 500 PT 324 688 C5 3 CAPACITOR CERAM SMD 1206 2p2F 0 25p NPO 500VDC GRM42 6 COG 2R2 C 500 PT 324 266 PAGE 7 6 9716 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO 66 3 CAPACITOR SMD 1206 3p3F 0 25 NPO 500VDC GRM42 6 COG 3R3 C 500 PT 324 268 67 3 CAPACITOR SMD 0805 6p8F 0 25pF 150 50VDC MURATA GRM40 P2H 6R8 C 50 PT 323 472 C8 3 CAPACITOR CERAM SMD 0805 Bp6F 0 25pF 150 50VDC MURATA GRM40 P2H 5R6 C 50 PT 323 471 69 3 CAPACITOR SMD 0805 18pF 5 NPO 50VDC TDK C2012 COG 1H 180 J T NiBa 323 077 C10 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C113 CAPACITOR CERAM SMD 0805 1 0 10 X7R 50VDC MURATA GRM40 X7R 102 50 PT 328 324 C123 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM4
27. As mentioned above the unbalanced output has to be used if RM2042 is connected to RT2047 or RT2048 The input signal to the unbalanced TX AF amplifier is attenuated and buffered by the operational amplifier U3 3 The output level is adjustable from 30dBm to 10dBm and is controlled by the trimming potentiometer R22 12V 24V WIRING CIRCUIT The RM2042 can be supplied from two different sources which are 12V battery SAILOR power supply N420 or N418 24V to 12V To select the wanted power source the interface module is mounted with a strap field which is accessible from the rear panel How to code this strap field is shown in chapter 2 which deal with the installation of RM2042 5V POWER SUPPLY The interface module include two separate 5V serial regulators The one U5 is only used to supply the loudspeaker amplifier and this voltage is designated 5VA in the diagram The other one U1 is used to supply all digital circuits at the interface microprocessor and display modules This regulator is constructed with an energy reservoir at its input terminal The energy reservoir is realized by a 1000F capacitor C3 This capacitor is able to hold the regulator output constantly at 5V for a periode of about 20msecs even if the supply voltage is completely removed This time periode is sufficient for the microprocessor to succeed the saving of all importen data The hold function of the 5V supply voltage is included to handle situations where RM
28. C46 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 50 PT 328 336 C47 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C48 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C49 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C50 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C51 3 CAPACITOR CERAM SMD 0805 220pF 5 NPO TDK C2012 COG 1H 221 J T NiBa 323 090 C52 3 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C53 3 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C56 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C57 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C58 3 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C59 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50100 MURATA GRM42 6C0G392J 50PT 324 105 C60 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6C0G392J 50PT 324 105 C61 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C62 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C63 3 CAPACITOR CERAM SMD 0805 830pF 5 NPO 50VDC TDK C2012 COG 1H 331 J T NiBa 323 092 C64 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURA
29. C48 2 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C49 2 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C50 2 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C51 2 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 52 2 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 50 PT 328 324 C53 2 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C54 2 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C55 2 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 01 2 DIODE SMALL SIGNAL S0D 80 BAS32L PHILIPS BAS32L 340 032 D2 2 DIODE SMALL SIGNAL 500 80 BAS32L PHILIPS BAS32L 340 032 FP1 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 24 MURATA BLM 31 B 601 S PT 370 021 FP2 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 2 MURATA BLM 31 B 601 SPT 370 021 FP3 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 023 MURATA BLM 31 B 601 SPT 370 021 FP4 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 023 MURATA BLM 31 B 601 S PT 370 021 FP5 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 2A MURATA BLM 31 B 601 S PT 370 021 FP6 2 EMI FERRITE BEAD 3 2x1 6x1 6mm MURATA BLM 31 B 601 S PT 370 021 FP7 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 24 MURATA BLM 31 B 601 S PT 370 021 FP8 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 24 MURATA BLM 31 B 601 SPT 370 021 FP9 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 2 MURATA BLM
30. D D D 4 2 2 Mixer 2 lt Oscillator 1 l Ja 15 6 m7 1 2 4 15 6 7 1 2 13 5 E 7 8 E Tow dE BOE NE i a a a a E 2 E 2 R m E E 5 Ee 5 am 25 00 E E doy m m1 5 z 5 a 5 5 5 a a a r a z O gt Z 2 gt 2 a y i 3 li 4 5 3 8 2 9 5 x xu 805 8 3 TDA7052 DIL 8 PACKAGE VDD 1 VDD 11 8 OUTPUT 2 5 OUTPUT 1 INPUT 12 7 NC INPUT GROUND 3 6 GROUND GROUND NC 14 5 OUTPUT 1 PLA 6 GND MSM6927 24 LEAD FLAT PACK 22 22 561 862 1 1 14 a w nun ee ER va CDR2 y 4 an SS SS CDRi ZE 8 2 i sw RDZ car m O 602 MSM6927GS K FE Transmit RD MSM6947GS K Om O RSI x2 O R52 CLK cs TS1 MSM6927RS TS MsM6947RS O O te TS2 MSM6927RS ATE MSM6947R8 Ki a ZE Y 54 ala a 2 g 585 8 8 8 o 9403 PAGE 3 13 3 SERVICE INTEGREATED CIRCUIT DIGITAL 68HC000 68 LEAD PLCC PACKAGE 8 8 o o a 2 eddi z SG 2 SAS SS SSES R O O cC UN r R O O QN e O DTACK 60 BG 590 BGACK 58 E BR 57 56 E CLK 55 GND 540 GND 53 TOP VIEW NC 52 HALT 51 RESET 500 49 E E 48 VPA 47
31. MCR 10 EZH J 103 302 060 R123 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R124 3 PRESET SEALED 50k OHM 25 0 1W BOURNS 3374X 1 503 E 6 310 450 R125 3 RESISTOR SMD 0805 120k OHM 5 0 1W ROH MCR 10 EZH J 124 302 073 R126 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R127 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH 101 302 036 R128 3 RESISTOR SMD 0805 680 OHM 5 0 1W ROH MCR 10 EZH J 681 302 046 R129 3 RESISTOR SMD 0805 3k9 OHM 5 0 14 ROH MCR 10 EZH J 392 302 055 R130 3 RESISTOR SMD 0805 2k2 OHM 5 0 1W ROH MCR 10 EZH J 222 302 052 R131 3 RESISTOR SMD 0805 2k2 OHM 5 0 14 ROH MCR 10 EZH J 222 302 052 R132 3 RESISTOR SMD 0805 27k OHM 5 0 1W ROH MCR 10 EZH J 273 302 065 R133 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R184 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R135 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH 101 302 036 TRI 3 TRAFO 157MHz ADJUSTABLE SUMIDA ELEC CO S 7GD 0237 1756 38 430 TR2 3 TRAFO RF 2u7H ADJUSTABLE TOKO F292MNS 3342BQE 38 431 Ut 3 NBFM IF SYSTEM MC3372 MOTOROLA MC3372D 350 570 02 3 1200 bps FSK MODEM MSM6927 OKI SM6927GS K 356 620 03 3 QUAD OP AMP LM324 MOTOROLA LM324D R2 350 530 04 3 QUAD COMPARATOR LOW POW 5014 LM339 LM239 TEXAS LM339DR LM239DR 350 540 U5 3 INTEGRATED CIRCUIT 74HC132D TEXAS SN74HC132DR 355 231 U6 3 TRIPLE 2 CHANNEL ANALOG MULTIPLEXER 74HC4053 PHILIPS 74HC4053D 355 313 07 3 QUAD LM324 MO
32. ROM CR10EZHJ121 302087 Post RESISTORSMD0805 1KOOHM5 0 1W FOM CR10EZHJ102 302048 ROH RESISTORSMD0805 1000HM5 0 1W FOM CR10EZHJ101 302086 SCH RESISTORSMD0805 1000HM5 0 1W ROM CR10EZHJ101 302 096 0131 QUADSBITADCPARALLEL AD7824 ANALOGDEVICES 351 854 DUAL ADT302 ANALOGDEVCES Aaen 351 806 DS WATCHDOG5VINCL TIMER MAXM IAX7OSCSAREEL 356642 Ute RS485DUPLEXTRANCENER MAX488 MAXIM IAX488CSA ESA 356607 U17 INTEGRATEDCIRCUIT TAHCSED TEXAS SNTAHCRDR 355217 MICROPROCESSOR MODULE 2 RM2042 ECI A S 5 0 26942L 4 0 26942M 626942 POSITION DESCRIPTION MANUFACTOR TYPE PARTNO Bt2 BATTERYLITHIUM 3V0 17Ah 12x115mm SAWO CRARNFTI 47 004 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 22 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 9838 C32 CAPACITORCERAM SMD0805 100nF 10 X7R25VDC MURATA GRM40X7R104K25PT 308348 CAPACITORCERAM SMD0805 100nF10 X7R2SVDC MURATA GRM40X7R104K25PT 308348 C52 CAPACITORCERAM SMD0805 100nF 10 6X7R25VDC MURATA GRM40X7R104K25PT 308348 C62 CAPACITORCERAM SMD0805 100nF10 X7R2SVDC MURATA GRM40X7R104K25PT 308348 72 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 82 CAPACITORCERAM SMD0805 100nF 10 X7R25VDC MURATA GRM40X7R 104K25PT 308348 C92 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 C102 CAPACITORCERAM SMDOB05 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 9838 112 CAPACITORCERAM SMD0805 100nF10 X7R2SVDC MUR
33. can be placed anywhere near the VHF DSC unit RM2042 The cable for the handset is five cored and must be connected to the rear of RM2042 by means of the 9 pole SUB D connector J1 1 For installation of the cable please see the drawings of the mounting brackets The cable grommet must be placed in the most convenient groove in the mounting bracket If more than one handset is needed please see section 6 SPECIAL INSTALLATION WITH 2 OR 3 MICROTELEPHONES 2 4 ANTENNA All commen 509 antennas which cover the used frequency range with a reasonable standing wave ratio maximum 1 5 are usable The antenna is connected to the set by means of a 500 coaxial cable with low loss e g RG213U At the cable end a PL259 plug is mounted The antenna must be placed as high and clear as possible The horizontal distance to metal parts must be at least one metre S P Radio has an antenna with the necessary specifications available The mentioned antenna is characterized by small external dimensions For further details see the special brochure VHF AERIALS 12V OPERATION RED 2 5 mm BLACK 2 5 mm gt ON OFF BLUE 0 5 NOT USED WHEN 12V BATTERY SUPPLY BLOCK DIAGRAM OF STRAPPING FOR 12V DC 27769 24V OPERATION o ol N420 24 DC BLACK 2 5 mm RED 2 5 mm ON OFF BLUE
34. further processing The UART is a full duplex device but the interface is constructed with a single line by means of Q6 and U2 1 using half duplex communication In order to avoid conflict on the line a master slave relationship is established RM2042 is the master and has control over the line If the VHF wants to use the line it interrupts RM2042 via pin 7 in P2 The signal levels are 0 and 5V DC PRINTER INTERFACE The printer interface is a Centronics compatible parallel interface implemented by the port IC U10 The microprocessor writes parallel data to port A When data is accepted by the port IC pin PC7 goes low and the printer strobe generator circuit on the microprocessor module generates a 2 s delayed and 4 s wide logical low strobe The printer answers by setting the busy flag high input to PCO When the printer has processed the data the busy flag is removed now logical low and the printer generates a logical low acknowledge pulse which is input to pin PC6 PC7 changes to logical high and the port IC is ready to write another byte to the printer If PC6 is kept low data written to port A is lost because output on PC7 is inhibited and no strobe is generated C2149 PC INTERFACE The C2149 PC interface is a standard RS232C interface implemented with the UART U8 and the RS232 line driver line receiver U11 U11 generates the RS232 signal levels of 9V from the single 5V supply The UART handles the transmission and receptio
35. o BI T 4 sls HS 3 Sam sche ale 1 18 1 rancab GS 4 m e E Sms T SSC ck LE s up Eu BRO T R32 45 y 8834 e 220 EE gt 25 1885 I 90 4 R aa m 2 308 L Se 8208 B 28 rt 2 15 8 8 mim ES Hc we 2 Umm Cum BE QU 4 5 7 5 Eg D 39 ss 5 EM ES ls del de els 4 ZE m gs EE 88 Gei gt C43 4 Lima 4 i 221 be I Re maj 9 458 Le 5V PIENE L 1 Factory default Grounded u as Coast station Not grounded 48588 3 Mama Uess s 2 gt 2 Factory default Not Mounted mig wig oz C193 cios cios Coast station Mounted us 95453 cus mL 39 d d 4 45V 45V SE GE 3 4 tnt re Las bai 4 ang 5V 45V 4 m Liza e a EC em en 4 2 Komm 5 13 8 12 8 3 3 15 4 15 3 14 Z mm 5V WG gt op 9 4 90 487 e m s gue T HN N picti 5 A Gar cue og 3 4 mo ja NL 2 war L GND 308 308 E ale 90 el 6j og Fm 41 00742 EN ES 38 dw u SE EM 558 D n 2 Dn e R25 ag d cest T he 4 25 al
36. of about 30dB Change the operation mode ofthe RT2047 orthe RT2048 from userto service mode Selecta DSC VHF channel different from channel 70 and change the operation mode back to user mode Change the operation mode of the RM2042 from user to service mode Start the transmission of a mark signal by pressing FUNC and selecting Test and mark in the display Control that the peak frequency diviation is 2600 Hz 10 Start the transmission of a space signal Control that the peak frequency diviation is 4200 Hz 10 Change the operation mode of the RM2042 back to user mode Change the DSC VHF channel setting back to channel 70 PAGE 3 5 3 SERVICE RM2042 CHECK OF TX AF DISTORTION The TX AF distortion is controlled by measuring the distortion of the TX AF signal at pin 4 in the 9 pole SUB D connector P2 1 at the interface module NOTE To perform this test it is necessary to change the operation mode of the RM2042 from user to service mode This change of operation mode is only allowed for trained technicians and the information of how to do it is therefore only included in the DSC VHF INSTALLATION GUIDE 1 Connect a LF distortion meter to the output of the used TX AF amplifier Unbalanced TX AF amplifier use pin 4 TX AF and pin 2 GND in P2 1 Balanced TX AF amplifier use pin 4 TX AF and pin 8 TX AF in P2 1 2 Change the operation mode of the RM2042 from user to service mode 3 Start the transmiss
37. select output from U24 to form the correct enable pulse E J4 pin 17 to chip select the display EPROM MEMORY The two IC s U3 and U5 contains the executable program code used by the microprocessor Since they occupy 128 kbytes equal to two 64 kbytes memory pages the IC s are selected when either output 0 or output 1 on U24 are at a logical low level RAM MEMORY The two IC s U2 and U4 are used to store intermediate and volatile values used by the microprocessor EEPROM MEMORY The IC U1 is the programmable non volatile memory The non volatile memory is used for storing identification numbers setup quick call numbers station register and received distress messages PROGRAMMABLE TIMERS U27 contains 3 programmable 16 bit timers These timers are used to interrupt and hereby control the real time operation of the microprocessor OUTO interrupts with an interval of approx 13 ms This timer is however under continuous software control and the time interval cannot be found to be stabile OUT 1 is an approx 1 ms interrupt source This timer is not under software control and should be stabile REAL TIME CLOCK U31 is a battery backed real time clock The IC maintains track of time and date The time is controlled by a 32 768 kHz crystal The IC interrupts the microprocessor each 10 ms by means of the INTR output For reference the 32 768 kHz is output on pin 16 MFO The oscillation frequency can be adjusted to the nominal value by use of C39
38. test equipment The check procedure can also be used as a function check after the system has been installed 1 Connect the RM2042 to the VHF tranceiver the printer and the GPS receiver if available 2 Select the FUNC menu and then the Position menu Control that the position data is updated by the GPS receiver 3 Select the CALL menu and press the up arrow button to key in the MID number of the DSC unit it self 4 Press NEXT and select Position by means of the left arrow and the NEXT button 5 Press NEXT and SEND for transmission of the DSC call 6 The DSC call should now be received by the RM2042 and the alarm signal will be heard in the internal loudspeaker The RM2042 will write the received message to the printer PAGE 3 3 3 SERVICE RM2042 CHECK OF RECEIVER SENSITIVITY The receiver sensitivity is controlled by applying a RF signal to the antenna terminal and then measuring the output signal to noise ratio SND N by means of a voltmeter 1 Connect a RF signal generator to the antenna input and adjustthe carrier level to 119 dBm EMF 6 dB uV Modulate the carrier with 1 kHz to a peak frequency diviation of 3 kHz 2 Connect a voltmeter to the analog switch output pin 14 at U6 3 for measuring the AC voltage 3 Read the meter deflection by means of the dB scale 4 Remove the modulation and control that the output level decrease more than 12 dB CHECK OF RECEIVER DISTORTION
39. the output level of the RF signal generator to 126 dBm EMF 13 dB uV 3 Connect a multimeter or an oscilloscope to the output of the voltage comparator pin 13 at U4 4 3 for measuring the DC voltage 4 Turn the trimpot R93 3 counter clockwise until the output goes high 5 Increase the RF input level to 125 dBm EMF 12 dB uV 6 Now adjust R93 3 clockwise until the output goes low 7 Increase the RF input level to 122 dBm EMF 9 dB uV and control that the output goes high ADJUSTMENT OF 10V The 10V power supply is used by the build in channel 70 receiver and the FSK encoder decoder 1 Connect a voltmeter to the output of the 10V power regulator pin 1 at U10 3 2 Adjust the DC voltage to 10V 10mV 3 7 REPLACEMENT OF COMPONENTS When replacing integreted circuits transistors diodes resistors capacitors and similar components you must use a small pencil soldering iron with a maximum temperature of 300 C 572 F The soildering must be performed rapidly to avoid superheating and the use of a desoldering wire is recommended as otherwise there is a risk that both the components and the printed circuit will be spoiled 3 8 REPLACEMENT OF MODULES If a fault has been located to a single module it may often be worth while to replace it and then repair it later on 9403 PAGE 3 9 3 SERVICE RM2042 3 9 NECESSARY ADJUSTMENTS AND CHECK AFTER REPAIR 3 9 1 REPAIR REPLACEMENT OF INTERFACE MODULE MODULE 1 REPLAC
40. 0 5 mm BLOCK DIAGRAM OF STRAPPING FOR 24V DC ANTENNA N O B RM2042 VOL ON OFF o 1 2 4 13V INT ANTENNA N H RM2042 ON OFF CONTROL TO N420 VOL ON OFF Sg 1 2 F1 13V INT 27770 2A IH H RM2042 Strap for connection to external supply 12V Strap for connection PAGE 2 5 2 INSTALLATION RM2042 2 5 ELECTRICAL CONNECTIONS Connector for Power Supply Antennaterminal 501224 Connector for Connector for VHF Connector for Connector for NMEA Interface Handset Radiotelephone Printer PC Remote Distress Unit C2149 POWER CONNECTOR PIN 1 EXT LOUDSPEAKER PIN 2 REMOTE AL CIRC PIN BATTERY PIN 4 EXT SUPPLY ON OFF PIN 5 P3 PIN 6 EXT LOUDSPEAKER 27772 CONNECTOR FOR HANDSET PIN PIN PIN PIN PIN PIN PIN PIN 27773 PIN TELEPHONE GND MIC GND MIC KEY DISTRESS 12V FROM VHF PAGE 2 6 2 INSTALLATION CONNECTOR FOR VHF 27774 CONNECTOR FOR PRINTER PIN PIN PIN PIN PIN PIN PIN PIN PIN RM2042 TELEPHONE GND MIC GND MIC TX AF KEY RX AF FROM VHF DISTRESS BUS INTERRUPT DATA TX AF 12V FROM VHF PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN PIN 27775 PIN ky zk sak ak WNP lt OOOOJOORWND lt
41. 0 X7R 102 K 50 PT 328 324 C13 3 CAPACITOR CERAM SMD 0805 56pF 5 NPO 50VDC TDK 02012 COG 1H 560 J T NiBa 323 083 C143 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C15 3 CAPACITOR CERAM SMD 0805 12pF 5 N150 50VDC MURATA GRM40 P2H 120 J 50 PT 323 475 C16 3 CAPACITOR CERAM SMD 0805 3p3F 0 25pF N15050VDC GRM40 P2H 3R3 C 50 PT 323 468 C178 CAPACITOR CERAM SMD 0805 8p2F 0 25pF 150 50VDC MURATA GRM40 P2H 8R2 C 50 PT 323 473 C18 3 CAPACITOR CERAM SMD 0805 8p2F 0 25pF 150 50VDC MURATA GRM40 P2H 8R2 C 50 PT 323 473 C19 3 CAPACITOR CERAM SMD 0805 3p3F 0 25pF 150 50VDC MURATA GRM40 P2H 3R3 C 50 PT 323 468 C20 3 CAPACITOR CERAM SMD 0805 12pF 5 N150 50VDC MURATA GRM40 P2H 120 J 50 PT 323 475 C21 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C22 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C23 3 CAPACITOR CERAM SMD 0805 56pF 5 NPO 50VDC TDK C2012 COG 1H 560 J T NiBa 323 083 C24 3 CAPACITOR CERAM SMD 0805 5 N150 50VDC MURATA GRM40 P2H 330 J 50 PT 323 480 C25 3 CAPACITOR CERAM SMD 0805 2p7F 0 25pF NPO 50VDC MURATA GRM40 COG 2R7 C 50 PT 323 067 C26 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 50 PT 328 336 C27 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C28 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 33
42. 0875 POSITION DESCRIPTION MANUFACTOR TYPE PART NR C1 CAPACITOR ELECTROLYTIC 100uF 20 10VDC ERO EKI 00 BB 310 C MOE 14 607 C2 CAPACITOR CERAMIC 10nF 20 80 CL2 50VDC KCK RT HE70 SK YF 103 Z 15 170 C3 CAPACITOR ELECTROLYTIC 10uF 20 35VDC ELNA RJ2 35 V 100 M T34 T58 14 512 C4 CAPACITOR ELECTROLYTIC 0 47uF 20 50VDG ELNA RJ3 50 V R47 M T34 14 504 C5 CAPACITOR ELECTROLYTIC 2u2F 20 50VDC ELNA RJ2 50 V 2R2 M T34 14 503 C6 CAPACITOR ELECTROLYTIC 2u2F 20 50VDC ELNA RJ2 50 V 2R2 M T34 14 503 C7 CAPACITOR ELECTROLYTIC 10uF 20 35VDG ELNA RJ2 35 V 100 M T34 T58 14 512 G8 GAPACITOR CERAMIC CL2 1n0F 10 100V PHILIPS 2222 630 63102 16 149 C9 CAPACITOR CERAMIC CL2 1n0F 10 100V PHILIPS 2222 630 63102 16 149 C10 CAPACITOR ELECTROLYTIC 33uF 20 16VDC ELNA RJ2 16 V 330 M T34 14 518 C11 CAPACITOR CERAMIC 10nF 20 80 CL2 50VDC KCK RT HE70 SK YF 103 Z 15 170 C12 CAPACITOR CERAMIC 27pF 10 N750 500VDC KCK RT HM60 SK UJ 270 K 16 062 C13 CAPACITOR CERAMIC 27pF 10 N750 500VDC KCK RT HM60 SK UJ 270 K 16 062 C14 CAPACITOR CERAM SMD 0805 15pF 5 NPO 50VDC MURATA GRM40 COG 150 J 50 PT 323 076 D1 DIODE 1N4148 HIGH SPEED PHILIPS 1N4148 143 25 131 MC1 MIGROPHONE ELECTRET 9 7 x 6 7mm PANASONIC WM 0344BY 46 012 R1 RESISTOR MF 1k8 OHM 5 0 33W PHILIPS 2322 187 73182 02 478 R2 RESISTOR MF 1k8 OHM 5 0 33W PHILIPS 2322 187 73182 02 478 R3 RESISTOR MF 8k2 OHM 5 0 33W PHILIPS 2322 187 73822 02 494 R4 RESISTOR MF 18k OHM 5 0 33W PHILIPS 2322 187 73183 02 502 R5 RESISTOR MF 2k7 O
43. 10 RX DATA 141 225MH2 PIN 11 TX DATA zle 18 ale zje BE PIN le MODULATION DETECT SE 855 1 1 un PIN 13 MODEM TX ON OFF gel SNE ES PIN 14 RX AF FROM VHF al 5547 PIN 15 TX FSK TO VHF Dmm 1 4 PIN 16 GND CH7 SIGNAL LEVEL 1 i e 18V E pero csa 5V 5 2 3 188 14 9 il 18 4 14 s 9 le posee xu 8 14 PL Te 9 ovo 5V 7 5V oup 18 2 A ca 14 U3 3 SE 38 we Ja 8 SS SE el nore 18 H 89 470 9 5V 3u3 Ll 5 49 5V 72 z a a 3 ES Sami 3 clas AE 4 3 74HC1320 2 01 Sue 5 oem SER vet 6 35 3312 37 2 SRI we REI e R44 QR va 8138 lt lt 8 ow 242118 4 MIC ee 100 T m i 5 188 sein 55 og 195 12 Ca D U e 5 3 5795MHz 5 43 Ag 1 E SERO 2 Dee rj 55 28 8 SE 2 zz 102K vi ee 88 Sum dy 488 S ER 4 us Fire Si un ES Sa 13 REL R62 34 3 4 A A 4 EY o 4 Geen Ge 11 SEL T Manas mamo T Pe gen Car em D 23 47K_ 4 470K BR 22 44 15V ee s I 5 m sd u 1 M SV po z ag Be s ezax ae a 2 D a n 3 16 4 we I 1 13 38 16 3 R94 EA als
44. 2 036 R81 3 RESISTOR SMD 0805 27 OHM 5 0 1W ROH MCR 10 EZH J 272 302 053 R82 3 RESISTOR SMD 0805 27 OHM 5 0 1W ROH MCR 10 EZH J 272 302 053 R83 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH 101 302 036 R84 3 RESISTOR SMD 0805 1k0 OHM 5 0 1W ROH MCR 10 EZH J 102 302 048 R85 3 RESISTOR SMD 0805 5R6 OHM 5 0 1W ROH MCR 10 EZH J 5R6 302 021 R86 3 RESISTOR SMD 0805 680 OHM 5 0 1W ROH MCR 10 EZH J 681 302 046 R87 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R88 3 RESISTOR SMD 0805 270k OHM 5 0 1W ROH MCR 10 EZH J 274 302 077 R89 3 RESISTOR SMD 0805 2k2 OHM 5 0 1W ROH MCR 10 EZH J 222 302 052 R90 3 RESISTOR SMD 0805 2k2 OHM 5 0 1W ROH MCR 10 EZH J 222 302 052 R91 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R92 3 RESISTOR SMD 0805 27k OHM 5 0 1W ROH MCR 10 EZH J 273 302 065 R93 3 PRESET SEALED 50k OHM 25 0 1W BOURNS 3374X 1 503 E 310 450 R94 3 RESISTOR SMD 0805 22k OHM 5 0 1W ROH MCR 10 EZH J 223 302 064 R95 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R96 3 RESISTOR SMD 0805 270k OHM 5 0 1W ROH MCR 10 EZH J 274 302 077 R97 3 RESISTOR SMD 0805 4Tk OHM 5 0 1W ROH MCR 10 EZH J 473 302 068 R98 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R99 3 RESISTOR SMD 0805 470k OHM 5 0 1W ROH MCR 10 EZH J 474 302 080 R100 3 RESISTOR SMD 0805 820 OHM 5 0 1W ROH MCR 10 EZH J 821 302 047 R101 3 RESISTOR SMD 0805 47 OHM 5 0 1W ROH MCR 10 EZH J 47R 302 032 R102 3 RESISTOR SM
45. 2012 COG 1H 151 J T NiBa 323 088 C97 3 CAPACITOR CERAM SMD 1206 115 5 NPO 50100 MURATA GRM42 6COG152J50PT 324 100 C98 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C99 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C100 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 328 348 C101 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6COG392J 324 105 C102 3 CAPACITOR CERAM SMD 1206 3ngF 5 NPO 50VDC MURATA GRM42 6C0G302J 50PT 324 105 C103 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6COG392J 50PT 324 105 C104 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6COG392J 50PT 324 105 C105 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6COG392J 50PT 324 105 C106 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6COG392J 50PT 324 105 C107 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6COG392J 324 105 C108 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50400 MURATA GRM42 6COG392J 50PT 324 105 C109 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6COG392J 50PT 324 105 C110 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6COG392J 50PT 324 105 C111 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 25 PT 328 348 C112 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C113 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 2
46. 2042 is turned off or the power supply voltage is removed because of a failure The diode D1 is used to avoid immediate discharging of C3 if the input power supply voltage is grounded in a failure situation POWER FAILURE RESET CIRCUIT The power failure reset circuit is included to handle those cases where the input power supply voltage shortly drops out Such a power failure will immediately be detected by the microprocessor by means of an error signal which is generated by the 10V voltage regulator at the receiver module The microproc essor will then save all data and write an error message to the display If the power supply is completely lost the RM2042 will simply be turned off and when the power supply is re established the RM2042 will be restarted by a power on reset pulse generated at the microproc essor module But if the input power supply only drops out shortly the 5V may not be lost completely because the capacitor C3 will hold this voltage for about 20msecs If the 5V supply for a short instant drops to about 4 5V the microprocessor will probably lose control and may then by an accident overwrite someimporten data To avoid this situation it is necessary to reset the microprocessor which is done by the power failure reset circuit at the interface module This circuit is build up around the voltage comparator U2 3 and use a divided part of the 10V supply voltage as reference The capacitor C63 is used to hold the reference voltag
47. 31 B 601 S PT 370 021 FP10 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 02 MURATA BLM 31 B 601 S PT 370 021 FP11 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 2A MURATA BLM 31 B 601 S PT 370 021 FP12 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 24 MURATA BLM 31 B 601 S PT 370 021 FP13 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 24 MURATA BLM 31 B 601 S PT 370 021 FP14 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 2 MURATA BLM 31 B 601 S PT 370 021 FP15 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 02 MURATA BLM 31 B 601 S PT 370 021 FP16 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 023 MURATA BLM 31 B 601 S PT 370 021 FP17 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 02 MURATA BLM 31 B 601 S PT 370 021 FP18 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 02 MURATA BLM 31 B 601 S PT 370 021 FP19 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 24 MURATA BLM 31 B 601 S PT 370 021 FP20 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 2A MURATA BLM 31 B 601 8 PT 370 021 FP21 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 023 MURATA BLM 31 B 601 S PT 370 021 FP22 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 023 MURATA BLM 31 B 601 S PT 370 021 FP23 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 0 24 MURATA BLM 31 B 601 S PT 370 021 FP24 2 EMI FERRITE BEAD 3 2x1 6x1 6mm 02 MURATA BLM 31 B 601 S PT 370 021 112 SOCKET 2x8 POLES 1 20 PCB VERSION AMP 4 175639 6 376 006 J2 2 SOCKET 2x7 POLES PCB VERSION AMP 1 215079 4 78 196 J8 2 SOCKET 2x8 POLES 1 20 PCB VERSION AMP 4 175639 6 376 006 4 2 SOCKET PCB VERSION 2x10 POLES u MATCH AMP 2 215079 0 9 215079 0 78 198 J5 2 SOCKET 2x8 POLES 1 20 PCB VERSION AMP 4 175639 6 376 006
48. 328 328 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO C414 CAPACITOR CERAM SMD 0805 2n2F 10 X7R 50VDC MURATA GRM40 X7R 222 K 50 PT 328 328 C42 1 CAPACITOR CERAM SMD 0805 2n2F 10 X7R 50VDC MURATA GRM40 X7R 222 K 50 PT 328 328 C43 1 CAPACITOR CERAM SMD 0805 2n2F 10 X7R 50VDC MURATA GRM40 X7R 222 K 50 PT 328 328 C44 1 CAPACITOR CERAM SMD 0805 2n2F 10 X7R 50VDC MURATA GRM40 X7R 222 K 50 PT 328 328 0454 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C46 1 CAPACITOR EMI KOND EMI 2n2 100V MURATA NFM41R100222T1 335 422 C474 CAPACITOR EMI KOND EMI 2n2 100V MURATA NFM41R100222T1 335 422 C48 1 CAPACITOR EMI KOND EMI 2n2 100V MURATA NFM41R100222T1 335 422 C49 1 CAPACITOR EMI KOND EMI 2n2 100V MURATA NFM41R100222T1 335 422 C50 1 CAPACITOR EMI KOND EMI 2n2 100V MURATA NFM41R100222T1 335 422 C51 1 CAPACITOR EMI KOND EMI 2n2 100V MURATA NFM41R100222T1 335 422 0524 CAPACITOR TANTALUM 3528 2u2F 20 16VDC ERO CB 225020 M E17 334 028 C53 1 CAPACITOR TANTALUM 3528 2u2F 20 16VDC ERO CB 225020 M E17 334 028 0544 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C55 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C56 1 CAPACITOR EMI KOND EMI 2n2 100V MURATA NFM41R10C222T1 335 422 0574 CAPACITOR EMI KOND EMI 2n2 100V MURATA NFM41R100222T1
49. 4 K 25 PT 328 348 C130 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 01 3 DIODE SMALL SIGNAL 500 80 BAS32L PHILIPS BAS32L 340 032 02 3 DIODE SMALL SIGNAL 500 80 BAS32L PHILIPS BAS32L 340 032 D3 3 DIODE DUAL SCHOTTKY 545 PHILIPS BAT 54 5 340 310 D4 3 DIODE DUAL SCHOTTKY 545 PHILIPS BAT 548 340 310 FL1 3 CRYSTAL FILTER Fo 15 3MHz NDK SP SPEC C1076 15N15B 40 029 FL2 3 CERAMIC FILTER Fo 450kHz BW 20kHz MURATA SFR450D 41 513 Jt 3 ANTENNA JACK FEMALE S0239 KAJ V HANSEN S0239 78 504 J2 3 SOCKET 2x8 POLES 1 20 PCB VERSION AMP 4 175639 6 376 006 COIL RF 110nH ADJUSTABLE TOKO E526HN 100117 38 409 L2 3 COIL RF 110nH ADJUSTABLE TOKO E526HN 100117 38 409 L3 3 COIL RF 110nH ADJUSTABLE TOKO E526HN 100117 38 409 L4 3 COIL RF 110nH ADJUSTABLE TOKO E526HN 100117 38 409 153 CHOKE FIXED 3u3H 5 COILCRAFT 1008CS 332 XJBC 337 280 16 3 TRAFO RF 110nH ADJUSTABLE TOKO E526 110436 38 407 17 3 CHOKE FIXED 120nH 5 COILCRAFT 1008CS 121 XJBC 337 263 133 FIXED 1206 68nH 10 COILCRAFT 1206CS 680XKBC 337 110 L9 3 CHOKE FIXED 270nH 5 COILCRAFT 1008CS 271 XJBC 337 267 01 3 DUAL GATE MOS FET N CHANN BF996S PHILIPS BF9968 215 347 096 Q2 3 TRANSISTOR N CHAN JFET TIS88A1 MOTOROLA TM 00 044 1 29 735 03 3 TRANSISTOR N CHAN JFET TIS88A1 MOTOROLA TM 00 044 1 29 735 Q4 3 DUAL GATE MOS FET N CHANN BF996S PHILIPS BF9968 215 347 096 05 3 TRANSISTOR NPN BFR92A PHILIPS BFR92A 345 530 06 3 TRANSISTOR RF NPN BFR92A PH
50. 5 2 RESISTOR SMD 0805 100k OHM 5 0 1W ROH 10 EZH J 104 302 072 R36 2 RESISTOR SMD 0805 56k OHM 5 0 1W ROH MCR 10 EZH J 563 302 069 R37 2 RESISTOR SMD 0805 100k OHM 5 0 1W ROH 10 EZH J 104 302 072 R38 2 RESISTOR SMD 0805 1M0 OHM 5 0 1W ROH MCR 10 EZH J 105 302 084 R39 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 R40 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 R41 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 51 2 ROTARY SWITCH SP ON OFF ON COPAL CS 4 12YTA 373 100 01 2 EEPROM 8kx8 Taa lt 200nSecs 28C64A 28C64B CATALYST CAT28C648N 20 TE7 TE13 356 210 U2 2 SRAM 8kx8 Taa lt 150nSecs UM6264BM MSM5165AL HM6264 UMC UM 6264BM 10L 356 310 082 PROGRAMMED PROM U3 2 RM2042 C1123 0DD ECI A S 0 0 29653 C1123D 6A3A 729653 U4 2 SRAM 8kx8 Taa lt 150nSecs UM6264BM MSM5165AL HM6264 UMC UM 6264BM 10L 356 310 U5 2 PROGRAMMED PROM U5 2 RM2042 1124 EVEN ECI A S 0 0 29654 C1124D 9795 729654 U6 2 NTEGRATED CIRCUIT 68HC000 MOTOROLA MC68HC000FN8 356 000 07 2 NTEGRATED CIRCUIT 74HC32D TEXAS SN74HC32DR 355 217 U8 2 NTEGRATED CIRCUIT 74HC32D TEXAS SN74HC32DR 355 217 U9 2 NTEGRATED CIRCUIT 74HC32D TEXAS SN74HC32DR 355 217 U10 2 HEX INVERTERS 74HC04 TEXAS SN74HCO4D R 355 205 011 2 NTEGRATED CIRCUIT 74HC21D TEXAS SN74HC21DR 355 214 U12 2 QUAD 2 INPUT NAND GATES 74HC00 TEXAS SN74HCOODR TAPE amp REEL 355 200 U18 2 NTEGRATED CIRCUIT 74HC08D TEXAS SN74HCOBDR TAPE amp REEL 355 208 U14 2
51. 50 100 SHUNT CONNECTOR FEMALE 2 POLES AMP 142270 1 78 325 W2 1 SHUNT CONNECTOR FEMALE 2 POLES AMP 142270 1 78 325 W3 1 SHUNT CONNECTOR FEMALE 2 POLES AMP 142270 1 78 325 9716 PAGE 7 3 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO INTERFACE MODULE 1 RM2042 ECI A S 5 0 26941F 4 0 26941K 62694101 POSITION DESCRIPTION MANUFACTOR TYPE PARTNO 0861 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 0874 CAPACITORCERAM SMD0805 100nF 10 6X7R25VDC MURATA GRM40X7R104K25PT 308348 0681 CAPACITORCERAM SMD0805 100nF 10 6X7R25VDC MURATA GRM40X7R104K25PT 308348 Sch RESISTORSMD0805 1KOOHM5 0 1W ROM CR10EZHJ102 302048 Feu RESISTORSMD0805 10kOHM5 0 1W FOM CR10EZHJ108 302 060 Rett RESISTORSMD0805 1K00HM5 0 1W FOM CR10EZHJ102 302048 R82 RESISTORSMD0805 1KOOHM5 0 1W FOM CR10EZHJ102 302048 881 RESISTORSMD0805 1KOOHM5 0 1W FOM CR10EZHJ102 302048 RESISTORSMD0805 1KOOHM5 0 1W FOM CR10EZHJ102 302048 R85 RESISTORSMDO805 10k00HM 19550mW PHLIPS 23027342 61008 302470 EA RESISTORSMD0805 100 19501111 PHLIPS 2320734261008 302470 Fe RESISTORSMD0805 1KOOHM5 0 1W FOM CR10EZHJ102 302048 SCH RESISTORSMD0805 1KOOHM5 0 1W FOM CR10EZHJ102 302048 SCH RESISTORSMD0805 1K00HM5 0 1W FOM CR10EZHJ102 302048 ROA RESISTORSMD0805 1KOOHM5 0 1W ROM CR10EZHJ102 302048 RESISTORSMD0805 1200HM5 0 1W FOM CR10EZHJ121 302 087 R RESISTORSMD0805 1200HM5 0 1W
52. 5VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C114 3 CAPACITOR CERAM SMD 0805 68pF 5 NPO 50VDC TDK 02012 COG 1 680 NiBa 323 084 C115 3 CAPACITOR CERAM SMD 0805 830pF 5 NPO 50VDC TDK C2012 COG 1H 331 J T NiBa 323 092 C116 3 CAPACITOR ELECTROLYTIC SM 3u3F 20 EUROPE CHEMICON Al Chip MKV 50V 3u3 M 333 073 C117 3 CAPACITOR ELECTROLYTIC SM 3u3F 20 EUROPE CHEMICON Al Chip MKV 50V 3u3 M 333 073 C118 3 CAPACITOR ELECTROLYTIC SM 3u3F 20 EUROPE CHEMICON Al Chip MKV 50V 3u3 M 333 073 C119 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50VDC MURATA GRM42 6COG392J 50PT 324 105 C120 3 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C121 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C122 3 CAPACITOR CERAM SMD 0805 270pF 5 NPO 50VDC TDK C2012 COG 1H 271 J T NiBa 323 091 C123 3 CAPACITOR CERAM SMD 0805 27pF 5 NPO 50400 TDK 02012 COG 1H 270 J T NiBa 323 079 C124 3 CAPACITOR CERAM SMD 0805 270pF 5 NPO 50100 TDK C2012 COG 1H 271 J T NiBa 323 091 C125 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 25 328 348 C126 3 CAPACITOR CERAM SMD 0805 150pF 5 NPO 50VDC TDK C2012 COG 1H 151 J T NiBa 323 088 C127 3 CAPACITOR CERAM SMD 1206 115 5 NPO 50100 MURATA GRM42 6COG152J50PT 324 100 C128 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C129 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 10
53. 6 C29 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 50 PT 328 336 C30 3 CAPACITOR CERAM SMD 1206 1n0F 10 X7R 500VDC MURATA GRM42 6 X7R 102 K 500 PT 324 688 C31 3 CAPACITOR CERAM SMD 0805 33pF 5 N150 50VDC MURATA GRM40 P2H 330 J 50 PT 323 480 032 3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C33 3 CAPACITOR CERAM SMD 0805 270pF 5 NPO 50VDC TDK 02012 COG 1H 271 J T NiBa 323 091 C34 3 CAPACITOR TRIMMER SMD 4 25P MURATA TZB04Z250BA 335 024 C35 3 CAPACITOR CERAM SMD 0805 56pF 5 NPO 50VDC TDK C2012 COG 1H 560 J T NiBa 323 083 C36 3 CAPACITOR CERAM SMD 0805 56pF 5 NPO 50VDC TDK C2012 COG 1H 560 J T NiBa 323 083 037 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C38 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C39 3 CAPACITOR CERAM SMD 0805 56pF 5 NPO 50VDC TDK C2012 COG 1H 560 J T NiBa 323 083 C40 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C41 3 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C42 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C43 3 CAPACITOR CERAM SMD 0805 22nF 10 X7R 50VDC MURATA GRM40 X7R 223 K 50 PT 328 340 C44 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50100 MURATA GRM42 6COG392J 324 105 C45 3 CAPACITOR CERAM SMD 1206 3n9F 5 NPO 50100 MURATA GRM42 6COG392J 50PT 324 105
54. 601 53 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 54 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 55 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 S6 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 57 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 58 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 59 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 510 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 511 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 812 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 513 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 514 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 515 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 S16 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 517 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 S18 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 519 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 520 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 521 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 522 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 523 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 524 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 525 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 526 6 SWITCH KEYBOARD 12x12mm OMRO B3F 4005 43 601 PAGE 7 12 9823
55. 74HC00 SO 14 PACKAGE M Bi Yt GND 74HC02 SO 14 PACKAGE 74HC04 SO 14 PACKAGE AG ve A5 Y5 4 4 A1 Y1 A2 Y2 A3 GND 74HC05 SO 14 PACKAGE 74HC08 SO 14 PACKAGE AG Ye AS 4 74HC14 SO 14 PACKAGE M A Y2 GND PAGE 3 17 RM2042 74HC74 80 14 PACKAGE 74HC32 SO 14 PACKAGE 3 SERVICE IIIIIIIIIA ITIITTIII I H L H H H H H H H H ZIIIIII II GNO L H L L H L IIIIIJ2JIIII 02 L L H L L XITII JIIIII PR2 01 ZII JITITII CLK2 PRI don t care 2 1 12 127 tow level X LZ x x Enable Select 62 B Alvo Y v2 va vs ve v CLR2 01 TX u sl sl sl sl sl sl G2A G2B 0 1 2 3 4 5 6 7 2 A AO GS LIHHHHHHHHIH H LIX X X X X X X LIL high level L LILH HHHHHH H H LIX X X X X X L H L LIX X X X X L H H L LIX X X X t HHH L LIX X XL HH H LIX XL H HH LIX L HH HH H HH H 02 H GNO YJ GND Y6 LU Y4 B3 A3 A2 B2 Y2 DATA OUTPUTS Y2 Y3 LO A2 A4 Y B4 B1 vo SELECT 4 PAGE 3 18 G2A 628 G1 mn OUTPUT ENABLE A1 Y1 74HC132 SO 14 PACKAGE 74HC138 SO 16 PA
56. ATA GRM40X7R104K25PT 308348 C122 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 C132 CAPACITORCERAM SMD0805 100nF 10 6X7R25VDC MURATA GRM40X7R104K25PT 308348 C142 CAPACITORTANTALUM3216 1u5F20 16VDC RO CA155016ME17 384007 C152 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 162 CAPACITORCERAM SMD0805 100nF10 X7R2SVDC MURATA GRM40X7R104K25PT 308348 C172 CAPACITORCERAM SMD0805 33pF5 NPOSOVDC TK C2012COG1H330JTNiBa 323080 C182 CAPACITORCERAM SMD0805 33pF5 NPO50VDC TK C2012C0G1H330JTNiBa 323080 C192 CAPACITORCERAM SMD0805 33pF5 NPO50VDC TK C2012COG1H330JTNiBa 323080 C202 CAPACITORCERAM SMD0805 10pF5 NPO50VDC TK C2012C0G1H100DTNBa 323074 C212 5 00805 100nF 10 6X7R25VDC MURATA GRM40X7R104K25PT 308348 C232 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 C242 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 0252 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 0262 CAPACITORCERAM SMD0805 100nF 10 X7R25VDC MURATA GRM40X7R104K25PT 308348 C272 CAPACITORCERAM SMD0805 100nF10 X7R2SVDC MURATA GRM40X7R104K25PT 308348 C282 CAPACITORCERAM SMD0805 100nF 10 6X7R25VDC MURATA GRM40X7R 104K25PT 308348 C292 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 C302 CAPACITORCERAM SMD0805 100nF10 X7R2SVDC MURATA GRM40X7R104K25PT 308348 031 2 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 9838 KH CAPACITOR
57. B 53 770 VARIOUS AERIAL PLUG PL259 RODAN PL259 LODDE TEFLON INDER 78 502 VARIOUS OPERATION MANUAL RM2042 ENGLISH HESTBECH 8 CO B2042GB VARIOUS SERVICE AND SALES AGENTS ADRESSES WORLD WIDE S P RADIO A S F1000GB VARIOUS MANUAL RM2042 ENGLISH S P RADIO A S Ver M2042GB BASE UNIT RM2042 STD ECI A S 702042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO 4 INTERFACE MODULE 1 RM2042 ECI A S 5 0 26941F 4 0 26941K 626941 2 MICROPROCESSOR MODULE 2 RM2042 ECI A S 5 0 26942L 4 0 26942M 626942 3 RECEIVER MODULE 3 RM204 RM2042 ECI A S 5 0 26943E 4 0 26943J 626943 4 DISPLAY PRINT RM2042 RM2150 RM2151 ECI A S 5 0 26944F 4 0 24944G 626944 6 KEYBOARD MODULE 6 RE2100 C2140 ECI A S 5 0 25636F 4 0 256360 625636 01 1 POS VOLTAGE REG 5V 1A MC7805 LM340T 5 0 MOTOROLA MC7805CT MC7805BT 31 250 U3 2 PROGRAMMED PROM U3 2 RM2042 01123 0DD ECI A S 0 0 29653 C1123D 6A3A 729653 U5 2 PROGRAMMED PROM U5 2 RM2042 01124 ECI A S 0 0 29654 C1124D 9795 729654 INTERFACE MODULE 1 RM2042 ECI A S 5 0 26941F 4 0 26941K 626941 POSITION DESCRIPTION MANUFACTOR TYPE PART NO VARIOUS FUSECLIP FOR 20x5mm FUSELINK KEYSTONE CAT NO 3521 78 396 014 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 104 K 25 328 348 024 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C3 1 CAPACITOR ELECTROLYTIC 1000uF 20 35VDC SAMHWA SV 1000uF 35WV 14 655 04 1 CAPACITOR ELECTROLYTIC 1000uF 20 35VDC SAMHWA
58. C 8T0 00988 244T 144T AAT 78 164 J2 1 SOCKET BNC PCB VERSION ROSENBERGER 51K102 400 M 78 444 J3 1 SOCKET SUB D 9 POLES PCB VERSION 2x 4 40 NUT EDA INC 8T0 00988 244T 144T 3447 78 164 J44 SOCKET SUB D 25 POLES PCB VERSION EDA INC 810 02588 244 78 166 11 1 COIL RF 8u2 SIEMENS B82412 A1822 M 337 135 12 1 COIL RF 8u2 SIEMENS B82412 A1822 M 337 135 OC1 1 OPTO COUPLER MOC207 IL207 MOTOROLA MOC207 R1 R2 353 057 S PLUG 1 10 DIL SQ PINS 6 POLES 826656 3 78 340 P2 1 PLUG SUB D 9 POLES PCB VERSION 4 40 THREAD EDA INC 8TO 009PS 241T 78 163 P3 1 PLUG 6 POLES HIRSCHMANN 973 887 100 78 315 P4 1 PLUG 2 POLES VERTICAL PCB VERSION JST B2B ZR 78 448 P5 1 SMD PLUG MALE 16 POLES AMP 4 175643 6 375 005 P6 1 SMD PLUG MALE 16 POLES AMP 4 175643 6 375 005 P7 1 SMD PLUG MALE 16 POLES AMP 4 175643 6 375 005 P8 1 SMD PLUG MALE 16 POLES AMP 4 175643 6 375 005 P9 1 SMD PLUG MALE 16 POLES AMP 4 175643 6 375 005 02 1 TRANSISTOR AF NPN BC848B MOTOROLA BC848BLT1 T3 345 048 084 TRANSISTOR AF NPN BC848B MOTOROLA BC848BLT1 T3 345 048 04 1 TRANSISTOR LF BCP55 16 NPN SMD SIEMENS BCP55 16 345 355 05 1 TRANSISTOR AF NPN BC848B MOTOROLA BC848BLT1 13 345 048 06 1 TRANSISTOR PNP 52 16 1 5W PHILIPS BCP52 16 346 352 07 1 TRANSISTOR AF NPN BC848B MOTOROLA BC848BLT1 T3 345 048 08 1 TRANSISTOR NPN BC848B MOTOROLA BC848BLT1 T3 345 048 Q9 1 TRANSISTOR AF SMALL SIGN 80123 BC858B MOTOROLA BC858BT1 T3 345 058 R2 1 RESISTOR SMD 0805 100k OHM 5 0 1W R
59. C MURATA GRM40 X7R 104 K 25 PT 328 348 0254 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C26 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C27 1 CAPACITOR CERAM SMD 1206 1u0F 20 80 16VDC MURATA GRM42 6 Y5V 105 Z 16 PT10 328 806 C28 1 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C29 1 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C30 1 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C31 1 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C32 1 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C33 1 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 03441 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 03541 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C36 1 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C37 1 CAPACITOR CERAM SMD 0805 2n2F 10 X7R 50VDC MURATA GRM40 222 K 50 PT 328 328 C38 1 CAPACITOR CERAM SMD 0805 2n2F 10 X7R 50VDC MURATA GRM40 222 50 PT 328 328 C39 1 CAPACITOR CERAM SMD 0805 2n2F 10 X7R 50VDC MURATA GRM40 222 50 PT 328 328 C40 1 CAPACITOR CERAM SMD 0805 2n2F 10 X7R 50VDC MURATA GRM40 X7R 222 K 50 PT
60. CERAM SMD0805 100nF10 X7R2SVDC MURATA GRM40X7R104K25PT 308348 C332 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 C342 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 C352 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 0362 CAPACITORCERAM SMD0805 100nF10 X7R25VDC MURATA GRM40X7R104K25PT 308348 PAGE 7 4 9 18 9716 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO C372 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C38 2 CAPACITOR CERAM SMD 0805 47pF 5 NPO 50400 TDK C2012 COG 1H 470 J T NiBa 323 082 C39 2 CAPACITOR TRIMMER SMD 4 25P MURATA TZB04Z250BA 335 024 402 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C41 2 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C42 2 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 432 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 0442 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C45 2 CAPACITOR TRIMMER SMD 4 25P MURATA TZB04Z250BA 335 024 C46 2 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C47 2 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 328 348
61. CHANGE OF SOFTWARE The microprocessor module 2 includes the two PROM s U3 and U5 which contain the software To locate these PROM please see the photo of the microprocessor module given section 4 in this manual NOTE If the software has to be changed it is always necessary to change both PROM s at a time 3 2 ALIGNMENT INSTRUCTIONS INTRODUCTION The measuring values indicated in chapter 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS are typical values and as indicated it will be necessary to use instruments in absolute conformity with the list given on the next page PAGE 3 1 3 SERVICE RM2042 3 3 PROPOSAL FOR NECESSARY TEST EQUIPMENT OSCILLOSCOPE Bandwidth Sensitivity Input Impedance E g Philips type PASSIVE PROBE Attenuation Input Impedance Compensation Range E g Philips type MULTIMETER Sensitivity DC f s d Input Impedance Accuracy DC f s d E g Philips type FREQUENCY COUNTER Frequency Range Resolution Accuracy Sensitivity Input Impedance E g Philips type RF SIGNAL GENERATOR Frequency Range Output Level Output Impedance Type of Modulation Modulation Frequency E g Rohde amp Schwarz RF MODULATION METER Frequency Range Input Impedance E g Rohde amp Schwarz LF SIGNAL GENERATOR Frequency Range Output Level Output Impedance E g Hewlett Packard LF DISTORTION METER Frequency Range Distortion Range f s d Input Impedance Accuracy f s d E g Hewl
62. CKAGE 74HC148 SO 16 PACKAGE vcc 9403 irrelevant H High tow X 3 SERVICE RM2042 74HC154 SO 24L PACKAGE Low i orm o c C D 92 15 14 13 12 11 0 1 2 3 4 5 6 7 8 8 OUTPUTS XXXIrIrIiriririririr IrZIrrrrrrrrrrrrrrrr zIrrrrrrrrerrrrrrrrr others high 74HC174 SO 16 PACKAGE CLEAR H High level steady state ob op C L Low level steady state X Don t Care T 1 T T Transition from low to high level Qo The level of O before the indicated steady state 4 input conditions were established 74HC393 SO 14 PACKAGE 74HC4053 SO 16PACKAGE OUTPUTS 2 vm 2 CLEAR 204 20g 20c 200 QUT IN IN OUT Ve WA BY M CY IN OUT OUT IN IN OUT INH Vu GND 1A 1 104 108 100 10p GND CLEAR OUTPUTS 74HC4040 SO 16 PACKAGE Wc ow 00 08 0s RESET CLOCK 01 9403 RM2042 CONTENTS 4 MECHANICAL DESCRIPTION 4 1 MECHANICAL DISASSEMBLING AND UNITS LOCATION 4 1 9716 501225 501226 501227 501229 501232 501236 4 MECHANICAL DESCRIPTION RM2042 4 1 MECHANICAL DISASSEMBLING AND UNITS LOCATION Screw for cover Front view without frontplate Screw for Display section Unbalanced AF output level adjustment Key information switch Top view Butt
63. Connect a multimeter to the analog switch output pin 14 at U6 3 for measuring the AC voltage 3 Adjust the trimpot R66 3 until the output level is 260 mV 5mV RMS PAGE 3 8 9403 3 SERVICE RM2042 ADJUSTMENT OF TRIGGER LEVEL FOR CHANNEL 70 CARRIER DETECT The channel 70 carrier detect circuit is constructed as a noise triggered squelch and the trigger level is adjusted by the trimming resistor R36 3 1 Apply an unmodulated carrier with the frequncy 156 525 MHz to the antenna terminal and adjust the output level of the RF signal generator to 126 dBm EMF 13 dB uV 2 Connect a multimeter or an oscilloscope to the output of the voltage comparator pin 14 at U4 3 3 for measuring the DC voltage 3 Turn the trimpot R36 3 counter clockwise until the output goes high 4 Increase the RF input level to 125 dBm EMF 12 dB uV 5 Now adjust R36 3 clockwise until the output goes low 6 Increase the RF input level to 122 dBm EMF 9 dB uV and control that the output goes high ADJUSTMENT OF TRIGGER LEVEL FOR VHF CARRIER DETECT The VHF carrier detect circuit is identical to the corresponding carrier detect circuit for the build in channel 70 receiver and the trigger level is adjusted by the trimming resistor R93 3 1 Connect the RM2042 to the VHF tranceiver by means of the 9 pole SUB D connector 2 Apply an unmodulated carrier with the frequncy 156 525 MHz to the antenna terminal at the connected VHF tranceiver and adjust
64. D 220K uM PIN 24 GND dl T 15 PIN 25 GND RIB 5 A 18 u t EM RIG C 7 e Ue los S i 5 o BCPSS 18 A ii 5 3 RIS 1 1 5CB48B H 1885 29 Cu ele wc 5 i SE mako o Tan H 5 RD PR 2 3 ma H RESET PRA PRS 19 D na Ki os un mm 198n 38 ES 28 ja 717 03 3 5 vo PBI EL o R21 ci 36 22 Im Ii 517 79 T E ME I sh m See dami dems Seed Sess 27 e A A e P 1 w 28 i Sys n L 5 O z t ma HZ 2 Sch LB 2 cl s 5 M ETS T i e3 15 2 pe H x M Sp I N 13 24 on 8 Eg Se sv PIN 1 BUS INTERRUPT PIN 1 GND PIN 1 GND PIN 1 POWER LOW RESET 18V PIN 2 GND PIN 2 16 PIN 2 RD PIN 2 DISTRESS CH PIN 3 MODEM TX ON OFF 3 07 PIN 3 WR PIN 3 VHF RXRDY Inte rf ace 1 z E PIN 4 RELAY CONTROLE PIN 4 GND PIN 4 GND PIN 4 RESET E PIN 5 TX DATA PIN 5 D4 PIN 5 CS NMEA PIN 5 PC DIST RXRDY T PIN MODULATION DETECT GND PIN CS PC DISTRESS PIN 6 VHF TXRDY PIN 7 VOLUME PIN 715 E TI I T 1 PIN 7 CS VHF PIN NMEA RXRDY PIN 8 RX DATA PIN GM 7 PIN 8 GND PIN PC DIST TXRDY i PIN 1 VBAT PIN LOOP BACK TEST PIN 9 0N OFF PIN 9 De i i i i PIN 9 Al PIN 9 REMOTE AL CIRC 4 4 ole PIN 2
65. D 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R71 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R72 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R73 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R74 1 RESISTOR SMD 0805 1k0 OHM 5 0 1W ROHM MCR 10 EZH J 102 302 048 R75 1 RESISTOR SMD 0805 100k OHM 1 50mW PHILIPS 2322 734 2 61004 302 570 R76 1 RESISTOR SMD 0805 205k OHM 1 50mW PHILIPS 2822 734 2 62054 302 600 R77 1 RESISTOR SMD 0805 100k OHM 1 50mW PHILIPS 2322 734 2 61004 302 570 RE1 1 RELAY DPDT 12VDC 1ADC MEISEI P 12 21 074 S1 1 SWITCH CS 4 22YTA COPAL CS 4 22YTA 373 102 92 1 ROTARY SWITCH SP ON OFF ON COPAL CS 4 12YTA 373 100 TRI 1 TRAFO AF 1 1 600 OHMS SCANELECTRIC 714065791 22 502 U1 1 POS VOLTAGE REG 5V 1A MC7805 LM340T 5 0 MOTOROLA MC7805CT MC7805BT 31 250 U2 1 QUAD COMPARATOR LOW POW 5014 LM339 LM239 TEXAS LM339DR LM239DR 350 540 084 QUAD OP AMP LM324 MOTOROLA LM324D R2 350 530 U4 1 AF POWER AMPLIFIER DIL8 1W BTL PHILIPS TDA7052 31 432 U5 1 VOLTAGE REGULATOR 5V 0 5A MOTOTOLA MC78MOSCDTRK 350 125 U7 1 INTEGRATED CIRCUIT 82051 OKI MSM82C51A 2JS 356 610 U8 1 INTEGRATED CIRCUIT 82051 MSM82C51A 2JS 356 610 U9 1 INTEGRATED CIRCUIT 82C51 OKI MSM82C51A 2JS 356 610 U10 1 INTEGRATED CIRCUIT 82C55 OKI M82C55A 2V 356 616 U11 1 RS 232 DRIVER RECEIVER AD232 MAX232 DS14C232C NATIONAL DS 14C232CWMX 356 605 U12 1 VOLTAGE REGULATOR 5VI0AA 78LO5A MOTOROLA MC78L05ACD R2 3
66. D 0805 11k5 OHM 1 50mW PHILIPS 2322 734 2 61153 302 476 R103 3 RESISTOR SMD 0805 36k5 OHM 1 50mW PHILIPS 2322 734 2 63653 302 524 R104 3 RESISTOR SMD 0805 9k53 OHM 1 50mW PHILIPS 2322 734 2 69532 302 464 R105 3 RESISTOR SMD 0805 121k OHM 1 50mW PHILIPS 2322 734 2161214 302 578 R106 3 RESISTOR SMD 0805 4853 OHM 1 50mW PHILIPS 2322 734 2 64532 302 433 R107 3 RESISTOR SMD 0805 487k OHM 1 50mW PHILIPS 2322 734 2 64874 302 636 R108 3 RESISTOR SMD 0805 100k OHM 1 50mW PHILIPS 2322 734 2 61004 302 570 R109 3 RESISTOR SMD 0805 205k OHM 1 50mW PHILIPS 2322 734 2 62054 302 600 R110 3 RESISTOR SMD 0805 30kt OHM 1 50mW PHILIPS 2322 734 2 63013 302 516 R111 3 RESISTOR SMD 0805 487k OHM 1 50mW PHILIPS 2322 734 2 64874 302 636 R112 3 RESISTOR SMD 0805 27k OHM 5 0 1W ROH MCR 10 EZH J 273 302 065 R113 3 RESISTOR SMD 0805 1k0 OHM 5 0 1W ROH MCR 10 EZH J 102 302 048 R114 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R115 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R116 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R117 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R118 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R119 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R120 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R121 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R122 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROH
67. EIVER WITH DECODER Receiver frequency Sensitivity Spurious radiation ENCODER Modulation Output level Tx key information Programable encoder output delay 156 525MHz Symbol error rate below 0 01 at 0 25uV pd Less than 2nW 1700 Hz 400 Hz 1200 Baud 30 ppm Adjustable between 10 dBm in 600 ohms balanced output Vcc or GND 1 mSec to 255mSecs RM2042 PAGE 1 3 1 INTRODUCTION RM2042 1 3 CONTROLS SAILOR COMPACT VHF DSC RM2042 S P RADIO DENMARK VOL tz ABC DEF GHI L 4 STU VHF FUNC CH 7 DIS ADDR TRESS BOOK On off vol turn style knob e Selects the function menu window from which one of seven different functions can be FUNC selected such as the display control functions printer function etc Activates the VHF channel selection mode if connected to a VHF transceiver with serial VHF interface i e RT 2048 Selects the received message menu which should be used for a display readout of messages in the memory bank x I MSG This button is used when you want to edit the content of a stored user composed call EDIT sequence or when you want to edit the position information Activated alone this button is used to enter the distress call menu in which youcan compose your distress message to be transmitted NOTE Activated simultaneous with the SEND button a distress call will be initia
68. EMENT OF INTERFACE MODULE MODULE 1 If the RM2042 is used in a semi automatic system where the balanced TX AF amplifier is used it is necessary to perform section 3 6 1 ADJUSTMENT OF BALANCED TX AF AMPLIFIER and then perform section 3 5 CHECK OF SYSTEM PERFORMANCE However if the RM2042 is used in a automatic system with RT2047 or RT2048 and if the interface module is replaced with a new one which is factory adjusted itis only necessary to perform section 3 5 CHECK OF SYSTEM PERFORMANCE REPAIR IN UNBALANCED BALANCED TX AF AMPLIFIER MODULE 1 Perform section 3 6 1 ADJUSTMENT OF UNBALANCED BALANCED TX AF AMPLIFIER Perform section 3 5 CHECK OF SYSTEM PERFORMANCE REPAIR IN S P BUS INTERFACE MODULE 1 Connectthe RM2042 to the VHF tranceiver RT2047 or RT2048 by means ofthe 9 pole SUB D connector P2 1 and select the VHF CH menu at the RM2042 Now try to key in a channel number with two digits e g channel number 12 and control that the channel number also change in the display at the VHF tranceiver REPAIR IN PRINTER INTERFACE MODULE 1 Press the FUNC button and select the Print menu by pressing NEXT Use the up arrow or down arrow to select Options setup Startthe print procedure by pressing NEXT and control that the options setup parameters are printed correctly REPAIR IN C2149 PC INTERFACE MODULE 1 Connect a GPS receiver to the remote control unit C2149 and connect this unit to th
69. H J 103 302 060 R17 2 RESISTOR SMD 0805 4K7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R18 2 RESISTOR SMD 0805 4K7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 PAGE 7 5 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO R19 2 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R20 2 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R21 2 RESISTOR SMD 0805 2k2 OHM 5 0 1W ROH 10 J 222 302 052 R22 2 RESISTOR SMD 0805 2k2 OHM 5 0 1W ROH 10 J 222 302 052 R23 2 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R24 2 RESISTOR SMD 0805 4 7 OHM 5 0 1W ROH MOR 10 EZH J 472 302 056 R25 2 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R26 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 R27 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 R28 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 R29 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 R30 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 R31 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 R32 2 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 302 036 R33 2 RESISTOR SMD 0805 10k OHM 5 0 14 ROH MCR 10 EZH J 103 302 060 R34 2 RESISTOR SMD 0805 10k OHM 5 0 14 ROH 10 EZH J 103 302 060 R3
70. HM 5 0 33W PHILIPS 2322 187 73272 02 482 R6 RESISTOR MF 4k7 OHM 5 0 33W PHILIPS 2322 187 73472 02 488 R7 RESISTOR MF 2k2 OHM 5 0 33W PHILIPS 2322 187 73222 02 480 R8 RESISTOR MF 6k8 OHM 5 0 33W PHILIPS 2322 187 73682 02 492 R9 RESISTOR MF 2k7 OHM 5 0 33W PHILIPS 2322 187 73272 02 482 R10 RESISTOR MF 120k OHM 5 0 33W PHILIPS 2322 187 73124 02 522 R11 RESISTOR MF 39k OHM 5 0 33W PHILIPS 2322 187 73393 02 510 S1 MICROSWITCH E62 10H PDT CHERRY E62 10H PDT 44 025 TRANSISTOR AF NPN BC547C TO 92 PHILIPS BC5470 126 28 068 T2 TRANSISTOR AF NPN BC547C TO 92 PHILIPS BC5470 126 28 068 T3 TRANSISTOR AF NPN BC547C TO 92 PHILIPS BC5470 126 28 068 TC1 TRANSDUCER DYNAMIC FOR HANDSET 31 18 200 OHM S E K KIRK 7802 0113 2715 46 010 PAGE 6 2 9716 6 MICROTELEPHONE INSTALLATION 6 1 H2086 FOR SCRAMBLER CRY2001 RE2100 RT2048 AND RT2047 PREPARED FOR DSC H2087 FOR VHF RT2047 AND SSB T2031 MICROTELEPHONE ONE WITH PREFERENCE H2087 MICROTELEPHONE CONNECTOR H2086 MICROTELEPHONE CONNECTOR Hook 1 SPECIAL INSTALLATION WITH 2 MICROTELEPHONES YELLOW 5 RED So gt P YELLOW OM 244 WHITE BLUE BROWN P1 BROWN RED YELLOW WHITE 42 H2087 BLUE 6 1 T 4 3 20 5 P2 H2087 6 ee 1 1 e e 03 212 L WHITE BLUE WHITE YELLOW RED BROWN
71. HONES SPECIAL INSTALLATION WITH 3 MICROTELEPHONES MECHANICAL DIMENSIONS FOR HANDSET PARTS LIST RM2042 2 6 3 1 3 2 3 3 3 3 3 6 3 9 3 9 3 10 3 12 4 1 5 1 5 7 5 13 5 23 5 27 6 4 6 5 9716 CONTENTS INTRODUCTION GENERAL DESGRIPTION TECHNICAL DATA CONTROLS PRINCIPLE OF OPERATION AND BLOCK DIAGRAM RM2042 1 2 1 3 1 4 1 6 RM2042 1 INTRODUCTION The RM2042 VHF receiver modem has been developed to fullfil the international requirements stated by IMO in the Global Maritime Distress and Safety System known as GMDSS The RM2042 isthe first self contained receiver modem on the market which includes a separate receiver with continous watch on calling ch 70 and a fullfeatured CLASS A modem for reception and generation of all types of calls Combined with a VHF in the compact 2000 program a complete fully automatic VHF communication system can be build Furthermore the units can be combined with other compact 2000 units to form a complete GMDSS installation The RM2042 combines the IMO requirements on safety with a lot of user convenient features to be used in normal VHF communication And of course a high security scrambler can be combined with the System This advanced communication controller uses a lot of front end technologies including a complete new range of components as well as the well known mechatronic design Resulting in a high quality product able to withstand the harsh en
72. ILIPS BFR92A 345 530 Q7 3 TRANSISTOR RF NPN BFR92A PHILIPS BFR92A 345 530 R1 3 RESISTOR MF 47k OHM 5 0 4W PHILIPS 2322 181 53473 01 241 R2 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 PAGE 7 8 9716 9716 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO R3 3 RESISTOR SMD 0805 27k OHM 5 0 1W ROHM MCR 10 J 273 302 065 R4 3 RESISTOR SMD 0805 12k OHM 5 0 1W ROHM MCR 10 EZH J 123 302 061 R5 3 RESISTOR SMD 0805 22k OHM 5 0 1W ROHM MCR 10 EZH J 223 302 064 R6 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 R7 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH J 101 302 036 R8 3 RESISTOR SMD 0805 330 OHM 5 0 1W ROHM MCR 10 EZH J 331 302 042 R9 3 RESISTOR SMD 0805 560 OHM 5 0 1W ROHM MCR 10 EZH J 561 302 045 R10 3 RESISTOR SMD 0805 560 OHM 5 0 1W ROHM MCR 10 EZH J 561 302 045 R11 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 R12 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH J 101 302 036 R13 3 RESISTOR SMD 0805 3k92 OHM 1 50mW PHILIPS 2322 734 2 63922 302 427 R14 3 RESISTOR SMD 0805 475R OHM 1 50mW PHILIPS 2322 734 2164751 302 335 R15 3 RESISTOR SMD 0805 7K50 OHM 1 50mW PHILIPS 2322 734 2 67502 302 454 R16 3 RESISTOR SMD 0805 499 OHM 1 50mW PHILIPS 2322 734 2 64992 302 437 R17 3 RESISTOR SMD 0805 12k OHM 5 0 1W ROHM MCR 10 EZH J 123 302 061 R18 3 RESISTOR SMD 0805 47k OHM 5
73. ILLATOR The 32 768 kHz oscillator is build up around U31 2 and is adjusted by the trimmer capacitor C39 2 The oscillator is used for real time clock generation and must therefor be adjusted carefully 1 Connect a frequency counter by means of a passive probe to the MFO output pin 16 of the integreted real time clock circuit 2 Adjust C39 2 until the frequency is 32 768 kHz 1 Hz 9403 PAGE 3 7 3 SERVICE RM2042 3 6 3 ADJUSTMENT OF RECEIVER MODULE 3 ADJUSTMENT OF FIRST LOCAL OSCILLATOR The 1st local oscillator is adjusted by the coil L6 3 1 Connect a frequency counter by means of a passive probe to the tap of the two capacitors C89 3 and C90 3 2 Adjust the coil L6 3 by a plastic or ceramic stick until the frequency is 141 225 MHz 100 Hz ADJUSTMENT OF SECOND LOCAL OSCILLATOR The 2nd local oscillator is partly build into the integreted IF circuit and is adjusted by the external trimmer capacitor C34 3 The oscillator is adjusted by measuring the frequency of the down converted signal at the 2nd IF 450 kHz 1 Apply an unmodulated carrier with the frequncy 156 525 MHz to the antenna terminal and adjust the output level of the RF signal generator to 0 dBm EMF 113 dB uV 2 Connect a frequency counter by means of a passive probe to the limiter output pin 7 at U1 3 3 Adjust C34 3 until the frequency is 450 kHz 25 Hz NOTE Be careful not to press the trimming capacitor while the adjustment is performed The t
74. IVER FRONT END FIRST MIXER AND 1st IF MODULE 3 Perform section 3 6 3 ADJUSTMENT OF FRONT END FILTERS AND MIXER TRANFORMERS Perform section 3 5 CHECK OF RECEIVER SENSITIVITY REPAIR IN LO1 MODULE 3 Perform section 3 6 3 ADJUSTMENT OF FIRST LOCAL OSCILLATOR Perform section 3 5 CHECK OF RECEIVER SENSITIVITY REPAIR IN LO2 AND 2nd IF MODULE 3 Perform section 3 6 3 ADJUSTMENT OF SECOND LOCAL OSCILLATOR Perform section 3 6 3 ADJUSTMENT OF AF OUTPUT LEVEL Perform section 3 5 CHECK OF RECEIVER SENSITIVITY REPAIR IN AF FILTERS MODULE 3 Perform section 3 5 CHECK OF RX AF FILTER RESPONSE Perform section 3 5 CHECK OF DSC CALL SENSITIVITY REPAIR IN FSK ENCODER DECODER MODULE 3 Perform section 3 5 CHECK OF TX AF LEVEL Perform section 3 5 CHECK OF TX AF DISTORTION Perform section 3 5 CHECK OF DSC CALL SENSITIVITY REPAIR IN CHANNEL 70 CARRIER DETECT MODULE 3 Perform section 3 6 3 ADJUSTMENT OF TRIGGER LEVEL FOR CHANNEL 70 CARRIER DETECT REPAIR IN VHF CARRIER DETECT MODULE 3 Perform section 3 6 3 ADJUSTMENT OF TRIGGER LEVEL FOR VHF CARRIER DETECT 9403 PAGE 3 11 3 SERVICE 3 10 PIN CONFIGURATIONS DIODE BAT54S SOT 23 CASE TRANSISTOR BC848B BC858B BFR92A SOT 23 CASE ch w NPN TIS88 SOT 23 CASE 1 2 Ih mem 3 BF996SB SOT 143 CASE D ech D G2 1 ol 5 S PN
75. LE MODEM TX ON OFF GND BUS INTERRUPT 4 B 26942M RM2042 1 TO PB ON INTERFACE MODULE ON KEYBOARD MODULE 6 TO JI TO P ON INTERFACE MODULE 1 1 TO P9 ON INTERFACE MODULE TO P4 ON DISPLAY MODULE 4 d PAGE 5 11 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 PAGE 5 12 9341 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 5 3 RECEIVER MODULE 3 PART NO 626943 The receiver module contains a fully channel 70 receiver FSK decoder encoder switches and controle logic for automaticly change over between the build in channel 70 receiver and the connected VHF radiotelephone The block diagram of the build in channel 70 receiver is shown below This receiver is constructed in accordance with the double super heterodyne principle which is characterized by having two interme diate frequencies The input signal to the receiver which is an FM signal is received by means of a separate antenna connected directly to the RM2042 First Mixer Receiver Front end 156 525 MHz Second Mixer 1 IF 2 IF Quadrature 15 3 MHz 450 kHz Detector Lous 141 225 MHz fig 14 85 MHz 27677 Channel 70 receiver RECEIVER FRONT END The receiver front end is tuned to channel 70 i e 156 525 MHz and consist of the low noise dual gate MOSFET transistor Q1 surrounded by two double tuned bandpass filters with high quality factor Q From the antenna the signal is led to the input b
76. M MCR 10 EZH J 273 302 065 R41 3 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R42 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 J 103 302 060 R43 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R44 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R46 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 R47 3 RESISTOR SMD 0805 820 OHM 5 0 1W ROHM MCR 10 EZH J 821 302 047 R48 3 RESISTOR SMD 0805 22k OHM 5 0 1W ROHM MCR 10 EZH J 223 302 064 R49 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R50 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 R51 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R52 3 RESISTOR SMD 0805 33k OHM 5 0 1W ROHM MCR 10 EZH J 333 302 066 R53 3 RESISTOR SMD 0805 82k OHM 5 0 1W ROHM MCR 10 EZH J 823 302 071 R54 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R55 3 RESISTOR SMD 0805 68k OHM 5 0 1W ROHM MCR 10 EZH J 683 302 070 R56 3 RESISTOR SMD 0805 39k OHM 5 0 1W ROHM MCR 10 EZH J 393 302 067 R57 3 RESISTOR SMD 0805 3k9 OHM 5 0 1W ROHM MCR 10 EZH J 392 302 055 R58 3 RESISTOR SMD 0805 270k OHM 5 0 1W ROHM MCR 10 EZH J 274 302 077 R59 3 RESISTOR SMD 0805 121k OHM 1 50mW PHILIPS 2322 734 2 61214 302 578 R60 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R61 3 RESISTOR SMD 0805 30k1 OHM 1 50mW PHILIPS 2322 734 2 63013 302 516 R62 3 RESISTOR SMD 0805 270k OHM 5 0 1W
77. NTEGRATED CIRCUIT 74HC393D TEXAS SN74HC393DR 355 281 15 2 NTEGRATED CIRCUIT 74HC05D TEXAS SN74HCOSDR TAPE amp REEL 355 207 U16 2 HEX INVERTERS 74HC04 TEXAS SN74HCO4D R 355 205 17 2 NTEGRATED CIRCUIT 74HC148 SGS THOMSON SN74HC148M1 355 237 U18 2 DUAL D FF SET RESET MC74HC74 SN74HC74 MOTOROLA C74HC74D R2 355 223 U19 2 NTEGRATED CIRCUIT 74HC32D TEXAS SN74HC32DR 355 217 U20 2 NTEGRATED CIRCUIT 74HC4040 TOSHIBA TC74HC4040AFN 355 307 U21 2 DUAL D FF SET RESET MC74HC74 SN74HC74 MOTOROLA C74HC74D R2 355 223 022 2 NTEGRATED CIRCUIT 82055 OKI 82C55A 2V 356 616 U28 2 3 TO 8 LINE DECODER 74HC138 TEXAS SN74HC138D R 355 235 U24 2 NTEGRATED CIRCUIT 74HC154 MOTOROLA C74HC154DWR2 855 239 05 2 NTEGRATED CIRCUIT 74HC4040 TOSHIBA TC74HC4040AFN 355 307 U26 2 NTEGRATED CIRCUIT 82051 OKI SM82C51A 2JS 356 610 U27 2 NTEGRATED CIRCUIT 82C54 OKI SM82C54JS 356 614 U28 2 NTEGRATED CIRCUIT 74HC08D TEXAS SN74HCO8DR TAPE amp REEL 355 208 U29 2 DUAL D FF SET RESET MC74HC74 SN74HC74 MOTOROLA C74HC74D R2 355 223 U30 2 DUAL D FF SET RESET MC74HC74 SN74HC74 MOTOROLA C74HC74D R2 355 223 U31 2 NTEGRATED CIRCUIT DP8573A NATIONAL DP8573AV 356 630 U82 2 NTEGRATED CIRCUIT LTC1044 LINEAR TECHNOLO 11010444158 350 010 U33 2 DUAL D FF SET RESET MC74HC74 SN74HC74 MOTOROLA C74HC74D R2 355 223 U34 2 NTEGRATED CIRCUIT 74HC08D TEXAS SN74HCO8DR TAPE amp REEL 355 208 X1 2 CRYSTAL 8 000MHz HC 49 U NDK LN P 0002 8 000MHz 39 771 X2 2 CRYSTAL 4 9152 MHz HC 49 U NDK LN P 00014 9152MHz 39
78. OH MCR 10 EZH J 104 302 072 R3 1 RESISTOR SMD 0805 2k2 OHM 5 0 1W ROH MCR 10 EZH J 222 302 052 R4 1 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R5 1 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH 101 302 036 R6 1 RESISTOR SMD 0805 100k OHM 5 0 1W ROH MCR 10 EZH J 104 302 072 R7 1 RESISTOR SMD 0805 47k OHM 5 0 1W ROH MCR 10 J 473 302 068 R8 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 EZH J 103 302 060 R9 1 RESISTOR SMD 0805 27k OHM 5 0 1W ROH MCR 10 EZH J 273 302 065 R10 1 RESISTOR SMD 0805 47k OHM 5 0 1W ROH MCR 10 EZH J 473 302 068 11 1 RESISTOR SMD 0805 27k OHM 5 0 1W ROH MCR 10 EZH J 273 302 065 R12 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROH MCR 10 J 103 302 060 R13 1 RESISTOR SMD 0805 220k OHM 5 0 1W ROH MCR 10 EZH J 224 302 076 R14 1 RESISTOR SMD 0805 220k OHM 5 0 1W ROH MCR 10 EZH J 224 302 076 R15 1 RESISTOR SMD 0805 220k OHM 5 0 1W ROH MCR 10 EZH J 224 302 076 PAGE 7 2 9716 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO R16 1 RESISTOR SMD 0805 22 OHM 5 0 1W ROHM MCR 10 EZH J 222 302 052 R17 1 PRESET SEALED 100k OHM 20 1 4W BOURNS 3314J 1 104 E G 310 412 R18 1 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R19 1 RESISTOR SMD 0805 22 OHM 5 0 1W ROHM MCR 10 EZH J 222 302 052 R20 1 RESISTOR SMD 0805 27 OHM 5 0 1W ROHM CR 10 EZH J 27R 302 029 R21 1 RESISTOR
79. OPTION 181 25 649 D4 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 181 25 649 D5 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 191 25 649 D6 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 191 25 649 D7 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW ER HLMP 7019 OPTION 191 25 649 D8 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 191 25 649 D9 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 181 25 649 D10 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 191 25 649 D11 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 181 25 649 D12 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 181 25 649 D13 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 181 25 649 9828 PAGE 7 11 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO Jt 6 SOCKET 2x7 POLES PCB VERSION AMP 1 215079 4 78 196 R1 6 RESISTOR MF 330 OHM 5 0 33W PHILIPS 2822 187 73331 02 460 R2 6 RESISTOR MF 680 OHM 5 0 33W PHILIPS 2822 187 73681 02 468 R3 6 RESISTOR MF 680 OHM 5 0 33W PHILIPS 2822 187 73681 02 468 R4 6 RESISTOR MF 330 OHM 5 0 33W PHILIPS 2822 187 73331 02 460 R5 6 RESISTOR MF 330 OHM 5 0 33W PHILIPS 2822 187 73331 02 460 51 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43 601 52 6 SWITCH KEYBOARD 12x12mm OMRON B3F 4005 43
80. P Source 1 Gate 2 2 Drain 3 Top view 3 VOLTAGE REGULATOR and CONVERTER 7805 TO 220 CASE LP2951 SO 8 PACKAGE 78M05 DPAK PACKAGE input output 3 UNREGULATED DC OUTPUT 1 8 INPUT SENSE 2 7 FEED BACK SHUTDOWN 13 6 5v TAP GND 4 5 ERROR FROM CMOS OR TIL ERROR DETECTION COMPARATOR LTC1044 SO 8 PACKAGE PAGE 3 12 Vob LV 1 CLOSED WHEN gt RM2042 BCP52 16 BCP55 16 SOT 223 CASE CH d NPN 78L05 SO 8 PACKAGE OUTPUT 1 8 INPUT COMMON 2 COMMON wa 5 PNP output input GND 2 3 6 7 9403 3 SERVICE RM2042 INTEGREATED CIRCUIT ANALOG LM324 SO 8 PACKAGE LM339 SO 8 PACKAGE MC3372 SO 16 CASE 5 Z jo E E S x 2 u BE E 8 e e e pod E us Eua P 5 5 5 5 5 5 a 5 O E E 5 5 i a 02 gt 0 it it lt Z Z 6 Z 2 o 0 G Z Z Z Z 16 13 12 lio 9 14 13 12 11 9 8 14 13 12 t 10 9 8 a 1 gt LG E Squelch Trigger Filter N with Hysteresis Amp 4 EN Amp
81. PRINTER C2149 PC NMEA Ji P2 J4 J3 J2 27502 PAGE 1 9 9716 2 1 2 2 2 3 2 4 2 5 CONTENTS INSTALLATION MOUNTING POSSIBILITIES POWER SUPPLY HANDSET ANTENNA ELECTRICAL CONNECTIONS RM2042 25 2 6 RM2042 2 INSTALLATION 2 1 MOUNTING POSSIBILITIES The VHF DSC RM2042 cabinet is designed in a module called a mini 1 4 box For this module we can supply a wide variety of installation brackets etc which will be described below We have made a drawing including dimensions and drilling plan for each type and we kindly ask you to look at the drawing for the type in question VHF DSC RM2042 AND VHF RT2048 MOUNTED ON TOP OF EACH OTHER USING H2067 MOUNTING BRACKET FOR TABLETOP BULKHEAD OR DECKHEAD FOR MINI 1 4 BOX AND H2072 LASHING KIT This mounting bracket H2067 and lashing kit H2072 is used when RM2042 is to be mounted on top of each other and nextto other units in the Compact 2000 programme mounted in H2055 mounting brackets H2072 LS Z 1 c o o LO CCC o Lj OD JUULI OD DENS L 0000000 E im 5 d e al OD 8 O le O 27599 min 80mm 60mm 55mm min 120mm dimensions when using a right angled VHF plug dimensions when using a standard VHF plug Weight Mounting kit H2067
82. ROHM MCR 10 EZH J 274 302 077 R63 3 RESISTOR SMD 0805 68k OHM 5 0 1W ROHM MCR 10 EZH J 683 302 070 R64 3 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R65 3 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R66 3 PRESET SEALED 50k OHM 25 0 1W BOURNS 3374X 1 503 E G 310 450 R67 3 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 J 103 302 060 R68 3 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R69 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 R70 3 RESISTOR SMD 0805 22k OHM 5 0 1W ROHM MCR 10 EZH J 223 302 064 R71 3 RESISTOR SMD 0805 4k7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R72 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 R73 3 RESISTOR SMD 0805 2k7 OHM 5 0 1W ROHM MCR 10 EZH J 272 302 053 R74 3 RESISTOR SMD 0805 330 OHM 5 0 1W ROHM MCR 10 EZH J 331 302 042 R75 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH J 101 302 036 R76 3 RESISTOR SMD 0805 OHM 5 0 1W ROHM MCR 10 EZH J 392 302 055 R77 3 RESISTOR SMD 0805 4k7 OHM 5 0 1W ROHM MCR 10 EZH J 472 302 056 R78 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH 101 302 036 PAGE 7 9 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO R79 3 RESISTOR SMD 0805 10 OHM 5 0 1W ROH MCR 10 EZH J 102 302 048 R80 3 RESISTOR SMD 0805 100 OHM 5 0 1W ROH MCR 10 EZH J 101 30
83. RRIER DETECT The VHF carrier detect circuit is used to detect whether a carrier signal is received by the external connected VHF radiotelephone This information is required to control the termination of a radiotelephone contact on a working channel between a ship station and a cost station According to the recommendation 689 given by the international organisation CCIR a radiotelephone contact which is iniatated by a DSC call shall be considered to be complete if the ship station equipment detects the absence of the cost station s carrier for a periode greather than 5 seconds As mentioned above the VHF carrier detect circuit is identical to the corresponding carrier detect circuit forthe build in channel 70 receiver The band pass filter is build up around the two operational amplifiers U7 1 and U7 2 while U4 4 is used as the voltage comparator The trigger level of the VHF carrier detect circuit is adjusted by the trimming resistor R93 MODULATION DETECT To initialize the sampling of the received bit stream a MODULATION DETECT signal is generated by means of the two NOR gates U9 2 and U9 3 The truth tabel for the MODULATION DETECT signal is given on the following page Please note the bar above the signal name AF SIGNAL DETECT in the truth tabel which is indicating that this signal is inverted PAGE 5 17 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 DETECT CH70 CARRIER VHF CARRIER DETECT AF SIGNAL DE
84. RS WYLE GINSBURY 2309 25 710 SOCKET STRIP 7 POLES ADV INTERCONNEC LNB 007 04 TG 78 835 42 SOCKET STRIP 7 POLES ADV INTERCONNEC LNB 007 04 TG 78 835 J3 SOCKET STRIP 3 POLES ADV INTERCONNEC LNB 003 04 TG 78 831 45 SIL SQUARE PINS 3 POLES CC 1 10 AMP 0 826629 3 0 826647 3 78 323 P1 PIN STRIP 7 POLES ADV INTERCONNEC KSA 007 80 G 78 376 P2 PIN STRIP 7 POLES ADV INTERCONNEC KSA 007 80 G 78 376 P4 INTERCONNECTION CABLE 20 POLES L 87mm ESPERA 3 0 26925A 526925 Q1 TRANSISTOR LF BCP55 16 NPN SMD SIEMENS BCP55 16 345 355 Ri POTENTIOMETER 10k OHM 10 0 1W LOG NOBLE V90 10155 D 08 257 R2 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH J 101 302 036 R5 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH J 101 302 036 R6 RESISTOR SMD 0805 36k5 OHM 1 50mW PHILIPS 2322 734 2 63653 302 524 R7 RESISTOR SMD 0805 100 OHM 5 0 1W ROHM MCR 10 EZH J 101 302 036 R8 RESISTOR SMD 0805 18k2 OHM 1 50mW PHILIPS 2322 734 2 61823 302 495 R9 RESISTOR SMD 0805 9k09 OHM 1 50mW PHILIPS 2322 734 2 69092 302 462 R10 RESISTOR SMD 0805 4k53 OHM 1 50mW PHILIPS 2322 734 2 64532 302 433 Ri1 RESISTOR SMD 0805 1 5 OHM 5 0 1W ROHM MCR 10 EZH J 152 302 050 R12 RESISTOR NTC 4K7 OHM 10 0 25W SIEMENS B57621 C472 K62 306 810 R13 RESISTOR SMD 0805 2k2 OHM 5 0 1W ROHM MCR 10 EZH J 222 302 052 R14 RESISTOR SMD 0805 2k2 OHM 5 0 1W ROHM MCR 10 EZH J 222 302 052 R15 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R16 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 E
85. SCHEMATIC DIAGRAMS RM2042 CHANNEL 70 CARRIER DETECT The receiver module is constructed with two identicale carrier detect circuits one for the build in channel 70 receiver and one for the external connected VHF radiotelephone The carrier detect circuit for the build in channel 70 receiver is included to avoid emission of a DSC call while an other unit is transmitting In addition the CH70 CARRIER DETECT signal is used to generate the MODULATION DETECT signal which is described later on The carrier detect circuit is constructed as an ordinary noise triggered squelch which in principle is measuring the noise level above the upper frequency component in the information signal From the output of the FM detector the received signal is led to a band pass filter with a center frequency of about 45 kHz formed by the two operational amplifiers U8 1 and U8 2 The output signal from this filter is rectified by the double diode D4 and the resulting DC voltage is compared to a reference voltage by means of U4 3 The level of the rectified voltage and thereby the trigger level of the carrier detect circuit can be adjusted by the trimming resistor R36 If only a noise signal is received the rectified input signal to the inverting terminal at the voltage comparator will be large enough to keep the output low But if a carrier is received the output noise from the FM detector will be reduced and the comparator output will change to logical high VHF CA
86. SMD 0805 1k0 OHM 5 0 1W ROHM MCR 10 EZH J 102 302 048 R22 1 PRESET SEALED 100k OHM 20 1 4W BOURNS 3314J 1 104 E G 310 412 R23 1 RESISTOR SMD 0805 2k7 OHM 5 0 1W ROHM MCR 10 EZH J 272 302 053 R24 1 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R25 1 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R26 1 RESISTOR SMD 0805 1k0 OHM 5 0 1W ROHM MCR 10 EZH J 102 302 048 R27 1 RESISTOR SMD 0805 27 OHM 5 0 1W ROHM CR 10 EZH J 278 302 029 R28 1 RESISTOR SMD 0805 205k OHM 1 50mW PHILIPS 2822 734 2 62054 302 600 R29 1 RESISTOR SMD 0805 22 OHM 5 0 1W ROHM MCR 10 EZH J 222 302 052 R30 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R38 1 RESISTOR SMD 0805 100k OHM 5 0 14 ROHM MCR 10 EZH J 104 302 072 R39 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R40 1 RESISTOR SMD 0805 120k OHM 5 0 1W ROHM MCR 10 EZH J 124 302 073 41 1 RESISTOR SMD 0805 330 OHM 5 0 1W ROHM MCR 10 EZH J 331 302 042 R42 1 RESISTOR SMD 0805 330 OHM 5 0 1W ROHM MCR 10 EZH J 331 302 042 R43 1 RESISTOR SMD 0805 2k7 OHM 5 0 1W ROHM MCR 10 EZH J 272 302 053 44 1 RESISTOR SMD 0805 100k OHM 5 0 1W ROHM MCR 10 EZH J 104 302 072 R45 1 RESISTOR SMD 0805 3k9 OHM 5 0 1W ROHM MCR 10 EZH J 392 302 055 R46 1 RESISTOR SMD 0805 47 OHM 5 0 1W ROHM CR 10 EZH J 47R 302 032 R47 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R48 1 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R49 1 RESISTOR SMD
87. TA GRM40 X7R 103 K 50 PT 328 336 C65 3 CAPACITOR CERAM SMD 1206 115 5 NPO 50VDC MURATA GRM42 6COG152J50PT 324 100 C66 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C68 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 C69 3 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C70 3 CAPACITOR CERAM SMD 0805 100nF 10 X7R 25VDC MURATA GRM40 X7R 104 K 25 PT 328 348 071 3 CAPACITOR ELECTROLYTIC SM 20 50VDC EUROPE CHEMICON Al Chip MKV 50V 8u3 M 333 073 C723 CAPACITOR ELECTROLYTIC SM 10uF 20 16VDC EUROPE CHEMICON Al Chip MKV 16V 10 M 333 079 C733 CAPACITOR TANTALUM 3528 2u2F 20 16VDC ERO CB 225020 M E17 334 028 C743 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 50 PT 328 336 C75 3 CAPACITOR CERAM SMD 0805 p47F 0 25pF NPO 50VDC C2012 COG 1H R47 C T NiBa 323 058 C76 3 CAPACITOR CERAM SMD 0805 p56F 0 25p NPO 50VDC MURATA GRM40 COG R56 C 50 PT 323 059 C778 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C78 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 K 50 PT 328 324 C79 3 CAPACITOR CERAM SMD 0805 1n0F 10 X7R 50VDC MURATA GRM40 X7R 102 50 PT 328 324 C80 3 CAPACITOR CERAM SMD 0805 18pF 5 N150 50VDC MURATA GRM40 180 J 50 PT 323 477 C81 3 CAPACITOR CERAM SMD 0805 27 5 150 50VDC MURATA GRM40 P2H 270 J 50 PT 323 479 082 3 CAPACITOR CERAM
88. TACK is instead generated by the binary counter U14 controlled by the 8 MHz clock and the upper and lower data strobes UDS and LDS on the microprocessor When U14 CT1 is used as output the microprocessor inserts 1 wait state in each read write cycle This means that the maximum access time for the memory chips and peripheral devices are 250 ns One device i e the LCD dot matrix display uses a 1115 bus cycle which is equivalent to the bus cycle used by M6800 devices The M6800 bus cycle is supported by the MC68HC000 microprocessor if the VPA valid peripheral address signal is asserted instead of the DTACK signal This is done each time the display is accessed by gating output no 7 on U24 i e the displays chip select back to the VPA input on the microprocessor via U10 5 U9 3 and U10 1 and at the same time use it to inhibit the generation of DTACK U9 4 pin 12 is at a logic high level The interrupt logic consists of U17 that encodes the interrupts and U23 that clears the presently served interrupt A logical low input to U17 indicates that an interrupt needs to be served The microprocessors interrupt decoder is level sensitive but inputs to U17 is latched on D type Flip Flops in order to make the interrupts from the peripheral devices edge triggered instead of level triggered The interrupt source i e the D type Flip Flop that has latched the interrupt signal is cleared during an interrupt acknowledge cycle The interrupt acknowl
89. TECT MODULATION DETECT REMARKS No carrier detected at CH70 receiver and no carrier detected at ext VHF Af signal detected because of noise Non existing combination No carrier detected at CH70 receiver byt carrier detected at ext VHF AF signal detected from ext VHF No carrier detected at CH70 receiver but carrier detected at ext VHF No AF signal detected from ext VHF Carrier detected at CH70 receiver and no carrier detected at ext VHF AF signal detected from CH70 receiver Carrier detected at CH70 receiver and no carrier detected at ext VHF No AF signal detected from CH70 receiver Carrier detected at CH70 receiver and carrier detected at ext VHF AF signal detected from CH70 receiver 5V SUPPLY Carrier detected at CH70 receiver and no carrier detected at ext VHF No AF signal detected from CH70 receiver The 5V supply is generated from the battery voltage by the series voltage regulator U11 This regulator is of the type 781 05 which is able to deliver a current of about 50mA without any heat sink 10V SUPPLY The 10V supply is generated from the battery voltage by the series voltage regulator U10 which is of the type LP2951C The output voltage is determined by four feed back resistors R121 to R124 and is adjustable by means of the trimming resistor R124 The LP2951C has a build in facillity for generating an error signal when the outpu
90. TOROLA LM324D R2 350 530 U8 3 QUAD OP AMP LM324 MOTOROLA LM324D R2 350 530 U9 3 QUAD 2 INPUT NOR GATE HCMOS 74H002 MOTOROLA C74HC02DR2 350 202 U10 3 VOLTAGE REG ADJUSTABLE lo 100mA 29610 NATIONAL LP2951CM LP2951ACM 350 050 U11 3 VOLTAGE REGULATOR 5VI0AA 78LO5A MOTOROLA C78L05ACD R2 350 100 X1 3 CRYSTAL C1074 14 850MHz 10ppm NC18C DANTRONIC ECI SPEC C1074 39 839 X2 3 CRYSTAL 3 579545MHz 50ppm DK LN P 0002 3 579545MHz 39 767 X3 3 CRYSTAL OVERTONE 141 225MHz 10ppm HC43 U DANTRONIC SP SPEC C1099A 39 842 XR1 3 CERAMIC RESONATOR Fr 450kHz MURATA CDBM450C7 41 507 PAGE 7 10 9716 7 PARTSLIST RM2042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO DISPLAY PRINT RM2042 RM2150 RM2151 ECI A S 5 0 26944F 4 0 26944G 626944 POSITION DESCRIPTION MANUFACTOR TYPE PART NO C1 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C2 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C3 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C4 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C5 CAPACITOR CERAM SMD 0805 10nF 10 X7R 50VDC MURATA GRM40 X7R 103 K 50 PT 328 336 C6 CAPACITOR CERAM SMD 0805 220pF 5 NPO 50VDC TDK C2012 COG 1H 221 J T NiBa 323 090 D1 DIODE SMALL SIGNAL 500 80 BAS32L PHILIPS BAS32L 340 032 D2 DISPLAY LCD RM215x 2x24 CHARACTE
91. The receiver distortion is controlled by applying a RF signal to the antenna terminal and then measuring the output distortion by means of a distortion meter 1 Connect a RF signal generator to the antenna input and adjust the carrier level to 30 dBm EMF 83 dB uV Modulate the carrier with 1 KHz to a peak frequency diviation of 3 KHz 2 Connect a distortion meter to the analog switch output pin 14 at U6 3 for measuring the receiver distortion 3 The measured distortion shall be less than 3 CHECK OF DSC CALL SENSITIVITY The DSC call sensitivity is controlled by modulating a RF signal generator with a DSC call which is generated by the DSC unit it self NOTE To perform this test it is necessary to change the operation mode of the RM2042 from user to service mode This change of operation mode is only allowed for trained technicians and the information of how to do it is therefore only included in the DSC VHF INSTALLATION GUIDE 1 Select the balanced TX AF amplifier as interface to the RF signal generator by turning the switch S1 1 at the interface module into the position E 2 Connect the output of the balanced TX AF amplifier to the external modulation input of the RF signal generator Use pin 4 TX AF and pin 8 TX AF in the 9 pole SUB D connector P2 connector for VHF tranceiver 3 Connect the output of the RF signal generator to the antenna terminal of the RM2042 4 Apply an external modulated carrier with the
92. ZH J 473 302 068 R17 RESISTOR SMD 0805 4k53 OHM 1 50mW PHILIPS 2322 734 2 64532 302 433 R18 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R19 RESISTOR SMD 0805 47k OHM 5 0 1W ROHM MCR 10 EZH J 473 302 068 R20 RESISTOR SMD 0805 120k OHM 5 0 1W ROHM MCR 10 EZH J 124 302 073 R21 RESISTOR SMD 0805 36k5 OHM 1 50mW PHILIPS 2322 734 2 63653 302 524 R22 RESISTOR SMD 0805 1k2 OHM 5 0 1W ROHM MCR 10 EZH J 122 302 049 R23 RESISTOR SMD 0805 18k2 OHM 1 50mW PHILIPS 2322 734 2 61823 302 495 R24 RESISTOR SMD 0805 1k30 OHM 1 50mW PHILIPS 2322 734 2 61302 302 381 R25 RESISTOR SMD 0805 5R6 OHM 5 0 1W ROHM MCR 10 EZH J 5R6 302 021 R26 RESISTOR SMD 0805 10k OHM 5 0 1W ROHM MCR 10 EZH J 103 302 060 R27 RESISTOR SMD 0805 120k OHM 5 0 1W ROHM MCR 10 EZH J 124 302 073 R28 RESISTOR SMD 0805 5R6 OHM 5 0 1W ROHM MCR 10 EZH J 5R6 302 021 Ut INTEGRATED CIRCUIT 74HC174D NATIONAL MM74HC174MX 355 252 U2 QUAD OP AMP LM324 MOTOROLA LM324D R2 350 530 U4 SCHMITT TRIGGER INVERTERS 74HC14 TEXAS SN74HC14DR 355 213 U5 HEX INVERTERS 74HC04 74HC04 TEXAS SN74HC04D R 355 205 Wi SHUNT CONNECTOR FEMALE 2 POLES AMP 142270 1 78 325 KEYBOARD MODULE 6 RE2100 C2140 ECI A S 5 0 25636F 4 0 25636C 625636 POSITION DESCRIPTION MANUFACTOR TYPE PART NO D1 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 181 25 649 D2 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019 OPTION 181 25 649 D3 6 DIODE LIGHT EMITTING SUB MIN LOW C YELLOW H P HLMP 7019
93. a I 4 2 1 SR palmo 5 56 sc 7 lt BEES T 251 suas 1 BAS gt 20 1 4 t B 4 0 268431 This diagram is valid for PCB rev 26943 9716 PAGE 5 21 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 PAGE 5 22 4 9716 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 5 4 DISPLAY UNIT MODULE 4 PART NO 626944 An LCD display of 2 times 24 characters with LED backlight is used to read out information to the operator DISPLAY MODULE The display module is mounted on top of the display unit by means of two connectors and four screws The display module has a dot matrix LCD display with 2 times 24 characters and a build in LCD driver controller This controller has a built in character generator and a display data RAM All the display functions are controlled by instructions from the microprocessor DISPLAY INTERFACE The display is interfaced with the microprocessor module 2 through the ribbon cable connector P4 The display enable pulse E signal is led directly to the LCD display by means of the strap field P5 The delay circuit consisting of four NAND gates U4 and three buffers U5 is not used in this product but nevertheless it is mounted because the display unit also is used in other of our products BRIGHTNESS CONTROL Brightness or viewing angle control is performed by a four bit digital to analog converter which gives 16
94. and white wire in P7 PAGE 6 4 6 MICROTELEPHONE INSTALLATION RM2042 6 3 MECHANICAL DIMENSIONS FOR HANDSET 2 151 MECHANICAL DIMENSIONS FOR HANDSET HOLDER WITH MICROSWITCH T N 64 i 13 20 24 o 55 O 2 lt ES Y 151 275 26999 9440 6 5 6 MICROTELEPHONE INSTALLATION RM2042 MECHANICAL DIMENSIONS FOR HANDSET 80 2 R W Ss 80 4 0 29938 MECHANICAL DIMENSIONS FOR HANDSET HOLDER WITH MICROSWITCH 103 151 275 gt 4 0 29937 9440 6 6 RM2042 CONTENTS 7 PARTS LIST 9716 9823 7 PARTS LIST VHF DSC RM2042 SAILOR GREEN S P RADIO A S VHF DSC RM2042 802042 POSITION DESCRIPTION MANUFACTOR TYPE PART NO VARIOUS MINI 1 4 BOX CABINET SAILOR GREEN 225435 GR N RILSAN 22543500 VARIOUS CABLE WITH PLUG ECI A S 503758 POWERKABEL 503758 VARIOUS INTERCONNECTION CABLE ECI A S 3 0 26947B 526947 VARIOUS DISTRESS PROCEDURE FOR SAILOR RM2042 ENGLISH HESTBECH 4 0 27939
95. andpass filter that consist of two resonance circuits which is critically coupled to each other by the series connection of the two capacitors C2 and C3 The two resonance circuits is tuned by the two adjustable coils L1 and L2 and has a total bandwidth of about 10 MHz The two diodes D1 and D2 is located in the second section of the input bandpass filter to protect the RF amplifier from damage by high voltages The configuration of the intermediate filter at the output of the RF amplifier is identical to the input bandpass filter The intermediate filter is tuned by the two adjustable coils L3 and L4 and has a bandwidth of about 4 MHz The front end selectivity gives the necessary attenuation of unwanted out of band signals which as an exampel could be a signal at the image frequency i e fu 125 925 MHz FIRST MIXER The first mixer is an balanced active J FET mixer with good large signal properties and low noise factor The signal from the receiver front end is led through the unbalanced to balanced transformer TR1 to the gates of the two J FET s Q2 and Q3 These J FET s are switched by injecting the 1st LO signal to the sources and a multiplum of the RF and LO signal is then generated This new signal is led to the output transformer TR2 where the wanted signal at the first intermediate frequency at 15 3 MHz is selected by the tuned circuit consisting of TR2 and C24 FIRST LOCAL OSCILLATOR The first local oscillator is generating the
96. ansformed to a voltage by means of the resistor R27 and is filtered by the capacitor C43 AF FILTERS The output signal from the AF amplifier inside U1 is led through the MOSFET switch U6 to the de emphasis filter which is build up around the operational amplifier U3 1 This filter is implemented as a second order band pass filter with a center frequency at 950 Hz PAGE 5 14 9941 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 An exact copy this de emphasis filter with the same component values is used in the receiver signal path from the connected VHF radiotelephone This filter is build up around the operational amplifier U7 3 The signals from the build in channel 70 receiver and the connected VHF radiotelephone are led to the input of the second switch inside U6 where the signal selection is performed The selected signal is filtered by a 6th order Gaussian high pass filter with a cutoff frequency of about 1 kHz followed by a 4th order Chebychev low pass filter with a cutoff frequency of about 3 kHz These filters are all together optimized with respect to stopband attenuation and group delay distortion The 6th order Gaussian filter is realized as an infinite gain multiple feedback filter and is build up around the three operational amplifiers U3 2 U3 3 and U3 4 The 4th order Chebychev filter is realized as a voltage controlled voltage source filter VCVS filter and is build up around the two operational amplifiers U8 3 an
97. ard is generated with two regulators one for 5V and one for 10V A power low condition is signaled from the 10V regulator to the microprocessor unit to secure a controlled power down sequence INTERFACE This module provides the necessary connections between the modules and between the modules and the externally connected equipment such as power supply VHF transceiver telephone handset printer etc This unit must be supplied with 12V DC which can be provided either directly from batteries or from N420 24to 12V converter The proper operation of the ON OFF switch is selected by means the 12 24V wiring circuit Fuse and over reverse voltage protection is placed on this module as well The 5V power supply for internal digital boards are made on this unit The AF power amplifier for the loudspeaker is supplyed by its own 5V regulator and the AF comes from the receiver module Alarm and mute signals are generated on the microprocessor module and feed to the amplifier chain Distress channel information for a connected scrambler is buffered and level shifted before it is feed to the 9 pole connector AF output for the connected transmitter is buffered and level adjusted in different amplifiers When the unit is operating in an automatic system with a VHF transceiver is the AF output delivered as an unbalanced signal adjusted in level to fit the microphone input sensitivity of the transceiver When the unit is operating as a DSC encoder i
98. cessor is partially determined by the outputs from the programable timers and partially by the real time clock circuit The real time clock circuit is operating with an external XTAL at 32 768kHz and has a separate primary battery back up to preserve the time settings of the equipment The reference clock for the FSK decoder and encoder is derived from a 4 9152MHz XTAL oscillator which among others are devided down to a 1200Hz signal Communication with the FSK modem is done via an USART The printer interface is made by means ofa standard i o portcircuit placed onthe interface module while the strobe pulse needed for the printer is generated by a few gates on this module The serial communication with external equipment is executed via three USART s placed on the interface module An i o port circuit is used for the interface between the microprocessor and the different single bit control signals The same circuit is used when the keyboard matrix are scanned This module includes as well the 5V to 5V voltage converter the output of which is used on the display module for the LCD display The voltage for the keyboard light for night illumination are also turned on and off on this module The switch S1 is used in service DISPLAY UNIT The display unit consist of two circuit boards One board connected directly to the microprocessor module Which includes a D A converter to control the DC amplifiers for viewing angel control and d
99. cessor module contains a syncronus receiver and three 8 bit ports MICROPROCESSOR UNIT The microprocessor unit U6 is a 16 bit MC68HC000 general purpose microprocessor 8 000 MHz OSCILLATOR The 8 MHz oscillator is build as a gate oscillator round U16 with the crystal X1 to control the oscillation frequency The output is used as clock input to the microprocessor U6 CONTROL LOGIC The control logic consist of three major blocks A reset circuit a DTACK and VPA generator and interrupt control logic The reset circuit build round U13 3 is used to insure correct initialization of the microprocessor during power on The microprocessors RESET and HALT inputs must be kept at a logical low level for at least 100 ms after Vcc has reached 5V If this fails the microprocessor goes into a double bus fault state and halts HALT pin is low while RESET is high R3 and C14 determines the power on reset time constant The microprocessor uses an asyncronus databus to communicate with all peripherals This means that the peripherals have to supply the data acknowledge signal DTACK to the microprocessor in order to tell when they have finished reading the databus or when data placed on the bus by the peripherals is valid If a peripheral does not assert the DTACK signal the microprocessor will continue to insert wait states or ultimately issue a bus error and halt the system The used memory and peripheral devices do not have an acknowledge signal The D
100. closed in this manual chapter 3 5 PERFORMANCE CHECK Inspection of the antenna cables and plugs for mechanical defects salt deposits corrosion and any foreign bodies shall be done at regular intervals not exceeding 12 months Along with each RM2042 a test sheet is delivered in which all the measurements made in the test department of the factory are listed If the control measurings made in the service workshop should not show the same values as those listed in the test sheet the set must be adjusted as specified in chapter 3 6 ADJUSTMENT PROCEDURE CHANGE OF BATTERY FOR BACK UP The RM2042 is constructed with a real time clock which uses a lithium battery for power back up By means ofthis battery it is possible to maintain track of time and date even though the RM2042 has been turned off The capacitance ofthe battery is 180 mAh milli Ampere hours and as the real time clock only consumes a current of about 7uA the battery should last for a period of at least 2 5 years However in practice this period will be longer because the battery is only used when the RM2042 is turned off The battery is located at the microprocessor module 2 and is soldered to the PCB to obtain mechanical stability The battery can be ordered from S P Radio Denmark by using the spare part number 47 004 IMPORTEN old battery shall be handed over to the authorities for proper destruction to avoid damages of the enviromental by the lithium
101. d Time Save Logie RAM Control Registers INTR MFO TUS4 NEL 8 820904 U I HERS 23 LEAD PLUG 5V INPUT 10uF 104 F 1 6 C1 Vec 4 70 5V TO 10V 6 3V C1 VOLTAGE DOUBLER V C2 C1 D 4JuF 10V TO VY VOLTAGE INVERTER 10pF 16V lt 16V V Si TTL CMOS Ee RS 232 INPUTS OUER 2 VIEW s Not to Scale SC 2 n TTL CMOS Se OUTPUTS INPUTS T2 our R2our 2 R2 N 9403 PAGE 3 15 3 SERVICE 71055 NEC 8 82C55 OTHERS 44 LEAD PLCC PACKAGE oo B o lt lt gt gt gt Z td ES S 4 s A12 As As Ag A4 11 NC EX VIEW TE A E A10 GE WE NC pa VO E Ao Aa N e w 222833 8573A 28 LEAD PLCC PACKAGE EEEE 21 RESET 49 1 TxDATA D TEMP Do Q 27 CTs D SYNC BRK 7 D TxRDY AxRDY RxDATA 7 D R GND El cp neo ez UUUUUUT x AD232 SO 16L PACKAGE cua GATE1 OUT 1 NC GND GATED Controt Register PAGE 3 16 RM2042 65 536 Bit EPROM Array High voltage 32 Byte page register DATA polling and R B LOGIC VO Buffers AddressBulters and Latches Inadvertent Write Protection Control Logic Addresss Buffer and Latches VOo VO7 9403 9403 3 SERVICE RM2042 MOC207 SO 8 PACKAGE
102. d U8 4 The output signal from the 4th order Chebychev filter is led to the voltage divider consisting of R112 and R113 where the signal level is attenuated to about 10mV This signal is used as input to the FSK decoder FSK DECODER ENCODER The FSK Frequency Shift Keying decoder and encoder is integreted in U2 which is a 1200 baud SINGLE CHIP MODEM of type MSM6927 from the manufacturer OKI FSK decoder The FSK decoder consist of receive filter FSK demodulator and AF signal detect circuit The receive filter is a 12th order band pass filter with a lower cutoff frequency at 600 Hz and an upper cutoff frequency at 2700 Hz which gives a bandwidth of 2 1 kHz The AF signal detect circuit consist of an AC to DC converter that produce a DC voltage proportional to the input signal level This DC voltage is compared with a reference voltage which can be modified by changing the voltage divider consisting of the two resistors R64 and R65 The output of this comparator is led to pin 12 CD1 at U2 which will be logical low if an AF signal is detected The bitstream output from the FSK demodulator is available at pin 10 RD butthe output will be keept logical high if no AF signal is detected FSK encoder The FSK encoder consist of FSK modulator and transmit filter The bit stream input to the FSK modulator is led to pin 9 XD and to enable the FSK modulator the REQUEST TO SEND signal RS1 at pin 4 must be logical low The FSK modula
103. d Unit 5 501 505 508 512 515 519 523 515 519 Y8 e e e ABC DEF e 1 2 502 506 510 513 516 520 524 516 520 Y4 JKL MNO gt 4 5 9 9 e e 503 507 511 814 517 521 525 505 506 50 508 812 513 514 517 621 RX STU Rp4 Y2 4 4 4 4 4 4 FUNC CH MSG EDIT LAST AA NEXT 7 19 8 2 se m 504 508 518 522 526 DIS ADDR gt DEG TRESS BOOK CALL SEND NA 581 582 503 504 508 518 511 518 522 x3 X4 x5 X6 X 1 2 30 4 He 6 8 s O 1 12 13 14 O Jal M M M 9 gt 338R gt Pt 9 001 Da 019 PIN 1 GD R 2 M KEYBOARD LIGHT 4 S R gt gt 4 PIN 4 x3 108 Dil PIN 5 X5 M R 3 MI PIN 6 X e gt 680R pi 7 XI 082 109 PIN 8 X7 R 4 M PIN 3 X6 PIN 18 Y8 p gt 330R pi PIN 11 Y4 003 005 012 PIN te M M RAS N 13 YI p D 330R pt EIN AE 3 084 006 013 This diagram is valid for PCB rev 25636F PAGE 5 27 9505 6 1 6 2 6 3 9716 CONTENTS MICROTELEPHONE INSTALLATION SPECIAL INSTALLATION WITH 2 MICROTELEPHONES SPECIAL INSTALLATION WITH 3 MICROTELEPHONES MECHANICAL DIMENSIONS FOR HANDSET RM2042 6 SCRAMBLER CRY2001 RE2100 RT2047 prepared for DSC and RT2048 MICROTELEPHONE INSTALLATION
104. dBm 10 dB by means ofthe trimpot R17 1 and must be adjusted in order to give a modulation index of 2 10 As mentioned in the previous adjustment procedure it is necessary to use the same VHF tranceiver during the adjustment as the one the RM2042 is going to be installed with NOTE To perform this test it is necessary to change the operation mode of both the RM2042 and the VHF tranceiver from user to service mode This change of operation mode is only allowed for trained technicians and the information of how to do it is therefore only included in the DSC VHF INSTALLATION GUIDE 1 Repeat point 1 5 in the previous adjustment procedure 2 Turn the switch S1 1 into the position 3 Start the transmission of a mark signal by pressing FUNC and selecting Test and mark in the display 4 Adjust R17 until the peak frequency diviation is 2600 Hz 10 5 Repeat point 9 10 and 11 in the previous adjustment procedure 3 6 2 ADJUSTMENT OF MICROPROCESSOR MODULE 2 ADJUSTMENT OF 4 9152 MHz OSCILLATOR The 4 9152 MHz oscillator is build up around the inverter U16 4 2 as a gate oscillator and is adjusted by the trimming capacitor C45 2 The oscillator is used for baud rate generation and must therefore be adjusted carefully 1 Connect a frequency counter by means of a passive probe to the output CTO pin 9 of the counter U20 2 2 Adjust C45 2 until the frequency is 2 4576 MHz 2 Hz ADJUSTMENT OF 32 768 kHz OSC
105. dance To establish a balanced connection between RM2042 and the connected VHF radiotelephone it will be necessary to use two wires while an unbalanced connection only requires one Because the number of wires in the connection cable is limit to nine and all are in use itis necessary to change the function of the serial data bus and use this as the second wire in the balanced connection As a consequence the balanced connection can not be used ininstalations where RM2042 is connectedto the duplex VHF radiotelephone RT2047 orthe simplex VHF radiotelephone RT2048 because the serial data communication is essential in these cases The switching between balanced and unbalanced mode is done manualy by turning the switch S1 with a screwdriver or equal The input signal to the balanced TX AF amplifier is a FSK signal Frequency Shift Keying signal which is generated by the MODEM IC located at the Receiver Module This FSK signal is led to the operational amplifier U3 2 and the transistor Q4 at the Interface Module The feedback signal to the OP AMP is taken from the emitter of Q4 which minimize the harmonic distortion The balance is obtained by means of the transformer TR1 which is placed between the battery voltage and the collector of Q4 The output level is adjustable from 10dBm to 10dBm 600 ohm and is controlled by the trimming potentiometer R17 9716 PAGE 5 1 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 UNBALANCED TX AF AMPLIFIER
106. e VHF DSC RM2042 Disconnect any GPS input to the RM2042 it self Press the FUNC button and select the Position menu Control that the ships position is continously opdated and equals the position determined by the GPS receiver NOTE The position update rate may be very slow REPAIR IN NMEA INTERFACE MODULE 1 Connect a GPS receiver to the VHF DSG unit and control that the ships position is updated as described above 3 9 2 REPAIR REPLACEMENT MICROPROCESSOR MODULE MODULE 2 REPLACEMENT OF MICROPROCESSOR MODULE MODULE 2 If the microprocessor module is replaced with a new one which is factory adjusted it is only necessary to perform section 3 5 CHECK OF SYSTEM PERFORMANCE REPLACEMENT OF SOFTWARE MODULE 2 Perform section 3 5 CHECK OF SYSTEM PERFORMANCE REPAIR IN 4 9152 MHz OSCILLATOR MODULE 2 Perform section 3 6 2 ADJUSTMENT OF 4 9152 MHz OSCILLATOR Perform section 3 5 CHECK OF SYSTEM PERFORMANCE PAGE 3 10 9403 3 SERVICE RM2042 REPAIR IN 32 768 kHz OSCILLATOR MODULE 2 Perform section 9 6 2 ADJUSTMENT OF 32 768 kHz OSCILLATOR Check that the real time clock is performing correctly by inspection of the display 3 9 3 REPAIR REPLACEMENT OF RECEIVER MODULE MODULE 3 REPLACEMENT OF RECEIVER MODULE MODULE 3 Ifthe receiver module is replaced with a new one which is factory adjusted itis only necessary to perform section 3 5 CHECK OF SYSTEM PERFORMANCE REPAIR IN RECE
107. e and the diode D7 avoid discharging backward to the 10V supply when this drops out Under normale operation condition the voltage at the noninverting terminal will be higher than the reference at the inverting terminal and the output voltage will then be high Ifthe 5V supply voltage shortly drops below 4 5V the voltage at the noninverting terminal will be lower than the reference voltage and the output voltage will then go low This will hold the microprocessor in reset in a periode determined by the capacitor C27 and the two resistors R27 and R75 S P BUS INTERFACE The serial S P bus interface is implemented in order to be able to control a connected S P VHF transceiver The connected VHF has to have a similar serial interface in order to be fully controllable for automatic semi automatic operation If the connected VHF does not have a S P bus interface RM2042 can only function as a DSC encoder Data is sent and received by the UART U9 The transmission rate is 4800 baud even parity 8 data bits and 1 stopbit or in RS232 terms 4800 E 8 1 When the UART are ready to transmit another databyte it uses the TXRDY pin to interrupt the microprocessor PAGE 5 2 9341 9341 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 The received serial data is stripped for start parity and stopbits and converted to parallel data When a parallel databyte is ready the UART uses RXRDY to interrupt the microprocessor which fetches the byte for
108. e made When measuring inside the unit short circuits must be avoided as the transistors would then be spoiled 3 5 PERFORMANCE CHECK CHECK OF SYSTEM PERFORMANCE With this check procedure it is possible to control the performance of a hole VHF DSC system which include the DSC unit it self the VHF tranceiver a GPS receiver and a printer The idea of this test procedure is first to key in a call sequence and hereby control the connections to the key board and display and the function of these modules The next step is to send the DSC call to your self which is done in the CALL menu by keying in the MID number of the unit it self The DSC call is now generated by the microprocessor and the FSK encoder at the receiver module The FSK signal is then modulating the connected VHF radiotelephone and a short piece of wire connected to the antenna terminal at the VHF will be sufficient to transfer the RF signal to the channel 70 receiver The received signal is then demodulated decoded sampled and finally recognized by the microprocessor As a response to the receiption of the call the microprocessor will write the received message to the printer and at the same time generate a gated tone sequence for the internal loudspeaker The primary force of this test is that the function of all modules is controlled and that the connections for external equipment are checked as well An other force is the fact that the test procedure does not require any
109. e where the unit accepts alphabetic characters Atthe first activation the first character will be displayed in the actual display input field at the second activation the second character will be displayed etc When gt button is activated the displayed character is selected and the next input field is shown with a blinking readout This button is used as a delimiter when time data or position data are entered from the keyboard This key is used to accept the displayed station data in a call composition When the data has been accepted it will be possible to enter a telephone number if the entered station is a coast station The enter button can also be used to accept entered keyboard inputs when valid data has been entered in a menu window Selects the degree sign in an input sequence for position data Stops the build in alarm circuits when a distress message has been received PAGE 1 5 1 INTRODUCTION RM2042 1 4 PRINCIPLE OF OPERATION AND BLOCK DIAGRAM RECEIVER The RF signal from the antenna is feed to the input amplifier circuit Here is the initial filtering made by means of a fixed double tuned filter before the signal is amplified in the front end amplifier This amplifier is followed by another fixed double tuned filter The amplified and filtered signal is feed to the first mixer stage This stage converts the received signal to the first IF frequency on 15 3 MHz The local oscillator for this stage is created by m
110. eans of an XTAL oscillator running at 141 225MHz The signal is filtered by means of an XTAL filter amplified and then feed to the integrated IF circuit This circuit includes the second XTAL oscilllator circuit running at 14 85MHz the second mixer stage and following limiting amplifiers and detector circuits The filtering on the second IF frequency at 450kHz is made by means of a ceramic filter The detected AF signal is led through an electrical controlled switch which is only used for loop back test purpose The output from this switch is filtered in the deemphasis filter before the AF signal selection where the selection between the build in channel 70 receiver and the connected VHF radiotelephone is performed The switch setting ofthe AF selection is determined by the actual operation of the unit and signal strength on Channel 70 giving full priority to the Channel 70 receiver output From the connected VHF radiotelephone the detected AF signal is feed to a deemphasis filter and a carrier detect circuit which provides the needed signals for the demodulator when you are using the public call facilities The selected AF signal is furthermore feed to the interface board where it is amplified to source an internal loudspeaker The FSK modem performs the demodulation of the received FSK signal and the modulation of the AF signal for the transmitter The circuit is controlled from the microprocessor board Internal power supply for the bo
111. edge cycle is recognized when the microprocessors function code outputs FCO FC3 are high In order to tell the microprocessor that the interrupt acknowledge cycle has been recognized the VPA signal must be asserted An interrupt acknowledge cycle is under execution when outputfrom U11 2is high this output is gated to the microprocessor in order to assert VPA 9716 PAGE 5 7 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 CIRCUIT SELECT DECODER All peripheral devices are memory mapped and can therefore be recognized by their address addresses in the systems address space By using address lines A16 to A19 as input to U24 a 4 to 16 line decoder the address space is divided into 16 64 kbytes pages Each output 0 to 15 on U24 selects a single 64 kbytes memory page Each peripheral device is placed on the start address of a new 64 kbytes memory page and the 16 outputs on U24 is therefore used to chip select the various peripheral devices As described above the display uses an M6800 device bus cycle instead of the normal 68 000 bus cycle The display is contrary to the other peripheral devices not equipped with a chip select pin The chip select output no 7 on U24 is instead used to generate a VPA valid peripheral device signal When the microprocessor has detected the VPA input it asserts the VMA valid memory address output This output is gated trough U11 2 along with the E output from the microprocessor and the display chip
112. el data bus to serial data The data is output on TXDATA if when the CTS input pin is low Whenever the U26 is ready to send another byte TXRDY goes high and interrupts the microprocessor Ifthe microprocessor has more data to send another byte is written to U26 Transmission is disabled by setting the CTS input high VOLTAGE CONVERTER The voltage converter U32 is used to generate 5V from the 5V supply The 5V is used to control the view angle of the lcd dot matrix display KEYBOARD LIGHT ON OFF The two transistors Q2 and Q3 are used to control the keyboard light When PBO on U22 is high Q2 and Q3 is on and VBAT is supplied to the LED s on the keyboard module 9941 PAGE 5 9 RM2042 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS COMPONENT LOCATION MICROPROCESSOR MODULE 2 27277 TT nn i 3 gt SE SE qu Sn er a 2 2 uem nn E 4 k el E i _ 2 E ce 22 Seen from component side with upper side tracks 4 3 g 1 m e
113. ett Packard PAGE 3 2 DC 35 MHz 2mV div 1 Mohm 20 pF PM3050 20 dB 10 Mohm 15 pF 10 30 pF PM8936 091 100 mV 10 Mohm 1 5 PM2505 100 Hz 165 MHz 1 Hz at f 100 MHz 1x 107 100 mV RMS 1 Mohm 30 pF PM 6674 155 MHz 165 MHz 124dBm 7dBm EMF 0 25 uV 50 ohm FM External 1 3kHz 2 1kHz Internal 1kHz CMT V RMS 1 nus 155 MHz 165 MHz 50 ohm CMT 100 Hz 3 kHz 10 mV 1V 50 ohm HP 8903B 1000 Hz 1300 Hz 2100 Hz 0 1 10 100 kohm 5 of reading HP 8903B 9403 9403 3 SERVICE RM2042 3 4 TROUBLE SHOOTING Trouble shooting should only be performed by persons with sufficient technical knowledge who have the necessary measuring instruments at their disposal and who have carefully studied the operation principles and structure of the VHF DSC RM2042 The first thing to check is whether the fault is somewhere in the antennea circuit the power source the handset or inside the RM2042 it self In order to help you during trouble shooting the section 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS contains diagrams principal descriptions and drawings showing the location of the individual components Typical values for the DC and AC voltages are indicated in the diagrams and also the test points are indicated in the diagrams The RM2042 has a number of trimming cores and trimmers which must not be touched unless adjustments as specified in section 3 6 ADJUSTMENT PROCEDURE can b
114. frequncy 156 525 MHz to the antenna terminal and adjust the output level to 113 dBm EMF 0 dB uV 5 Change the operation mode of the RM2042 from user to service mode 6 Select the FUNC menu and then the Test menu Select Dot pattern by means of the left arrow or right arrow and press the NEXT button r Adjust the peak diviation at the RF signal generator to 3400 Hz and press the STOP ENT button to terminate the transmission of dot pattern 8 Select Testcall by means ofthe left arrow or right arrow and press NEXT to start the continous transmission of a test call to the unit it self 9 Now control that the RM2042 is receiving a continous sequence of individual calls 10 Terminate this procedure by turning the RM2042 off Remember to change the operation mode back to user mode PAG E 3 4 9403 9403 3 SERVICE RM2042 CHECK OF RX AF FILTER RESPONSE The response of the RX AF filter is essential for the bit error rate and must therefore be check carefully 1 2 Disconnect any input to the antenna terminal Connect a LF signal generator to pin 6 RX AF FROM VHF and pin 2 GND in the 9 pole SUB D connector P2 1 at the interface module Connect a voltmeter to the output of the RX AF filter for measuring the AC voltage U8 4 3 pin 14 Adjust the frequency of the LF signal generator to 1700 Hz and the output level to 350 MV 30mV The measured value is used as Measure the ou
115. injection signal at 141 225 MHz to the first mixer The oscillator is crystal controlled and is oscillating directly at the wanted LO frequency 9716 PAGE 5 13 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 The crystal X3 is constructed to work at the 7th overtone and is used in a series resonance mode Unfortunately the crystal has also a parallel resonance frequency which is located only 4 to 5 kHz above the wanted series resonance This parallel resonance frequency is determined by the static capacitance C andis effecting the phase response of the crystal in an unwanted maner which is lowering the tracking range To overcome this problem the crystal is parallel connected with the inductor L9 which partly is eliminating the static capacitance The oscillator is build up around the bipolar NPN transistor Q5 which has a typical transition frequency f of 5 GHz The transistor is used in a commen base configuration where the capacitor C79 is used to ground the signal at the base terminale The oscillation is obtained by feeding back the collector signal to the emitter where the crystal is used as the feed back element The adjustable coil L6 at the collector form a resonance circuit together with the series connection of the capacitors C80 C81 and C82 The oscillation frequency can be adjusted by tuning the resonance freguency of this tank circuit which will increase or decrease the phase shift in the open loop response The oscillato
116. ion of a mark signal by pressing FUNC and selecting Test and mark in the display 4 Control that the distortion is less than 5 Start the transmission of space signal 6 Control that the distortion is less than 5 7 Change the operation mode of the RM2042 back to user mode 3 6 ADJUSTMENT PROCEDURE This section contains the adjustment procedures for all adjustable components in the RM2042 3 6 1 ADJUSTMENT OF INTERFACE MODULE 1 ADJUSTMENT OF UNBALANCED TX AF AMPLIFIER When the RM2042 is operating as an automatic system together with one of our VHF tranceiver the TX AF output is delivered as an unbalanced signal adjusted in level to give a modulation index of 2 measured at the transmitter output During the adjustment the RM2042 must be connected to the same VHF tranceiver as it is going to be installed with This demand is motivated by the fact that the microphone input sensitivity may vary from one tranceiver to an other The unbalanced signal is amplified by the operational amplifier U3 3 and the output level is adjusted by means of the trimpot R22 1 NOTE To perform this test it is necessary to change the operation mode of the RM2042 and the VHF tranceiver from user to service mode This change of operation mode is only allowed for trained technicians and the information of how to do it is therefore only included in the DSC VHF INSTALLATION GUIDE 1 Connect the RM2042 to the VHF tranceiver by mean
117. isplay backlight control and a socket for connection to the display module The display is a standard dot matrix LCD display module which includes the necessary drivers and parallel communication circuits Power on off switch and AF volume potentiometer is mounted on this unit as well This unit has been developed to be used in RM2150 51 as well the identity programming needed is made by means of a jumper on P5 KEYBOARD The keyboard module is a standard module for the 2100 series of products It consist of a 4x7 keybord matrix and light emitiing diodes used for night illumination of the keyboard PAGE 1 7 1 INTRODUCTION RM2042 BLOCK DIAGRAM RM2042
118. iven by the resistors R21 R23 and R24 The current running in the emitter of Q1 can therefore be controlled by combinating the digital outputs from U1 This means that the current running through the backlight LED s can be controlled by U1 in four steps with step 1 as O mA and step 4 as 180 mA PAGE 5 23 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 COMPONENT LOCATION DISPLAY UNIT MODULE 4 Seen from component side with upper side tracks Seen from component side with lower side tracks PCB rev 26944F PAGE 5 24 9739 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS DISPLAY UNIT MODULE 4 DISPLAY UNIT MODULE 4 T ei 1 RI 1 Log I FROM MAIN E A PROCESSOR 45V PIN 1 GND PIN 2 VCC PIN 3 SPEAKER VOL PIN 4 ON OFF PIN 5 ON OFF PIN 6 RS PIN 7 DD PIN 8 DDI PIN 9 002 PIN 18 DD3 PIN 11 004 PIN 12 005 13 006 14 007 PIN 15 R N PIN 16 DISPCS PIN 17 E PIN 18 5V PIN 19 D ACS PIN 20 ARDY U4 2 14 14 1 14 US U5 2 74HCI4D 4HC 1404 74HC 4D 4HC04D E 5V d I L 88 Sama V re Win T ul Le i ET EF GND GND 5V 14 14 3 4BC14D El
119. n of serial data The transmission rate is 4800 E 8 1 During transmission the UART uses TXRDY to interrupt the microprocessor when it is ready to transmit another byte During reception the UART uses RXRDY to interrupt the microprocessor and tell that a byte has been received If a C2149 remote box is connected it can receive its supply voltage via pin 6 in J3 NMEA 0183 INTERFACE NMEA0183 is the international standard for interfacing marine electronics navigational devices NMEA0183 provides for asyncronus transmission with a single talker and multiple listeners per line The standard uses an 8 bit ASCII parity disabled block oriented protocol with a transmission rate of 4800 baud The incoming signal is electrically isolated from RM2042 by the optocoupler OC1 Because of the signal deformation in the optocoupler the signal is sent trough the Schmitt trigger build round U2 4 The serial data is received by the UART U7 The UART uses RXRDY to interrupt the microprocessor whenever a byte is received PAGE 5 3 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 COMPONENT LOCATION INTERFACE MODULE 1 Seen from soldering side with lower side tracks PCB rev 26941F PAGE 5 4 9841 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 INTERFACE MODULE 1
120. nput for direct connection to on board navigational equipment giving automatic position update in DSC calls can be connected to a standard line printer for print out of received messages and other valueable informations includes as a standard an electronic memory message bank for different kinds of calls includes a user programable quick call register not only for numbers but for complete user composed DSC calls includes a real time clock with battery back up uses a fully alpha numeric LCD display for read out of all kinds of messages in plain language supplies the user with a menu guided programming interface making it an easy task to compose all kinds of calls can be used for channel selection on your new Compact 2000 VHF transceiver is housed in a corrosion resistant metal cabinet with a green nylon finish can of course be used a manual set up as a DSC encoder providing the connected VHF unit with key information etc 1 INTRODUCTION 1 2 TECHNICAL DATA Complies with IMO ITU CEPT and other national requirements GENERAL Operation Protocol Printer Interface Navigator Interface Power Supply Power Consumption Temperature Range Dimensions Weight As CCIR Rec 541 3 As CCIR Rec 493 4 as VHF Class A equipment Parallel Centronics NMEA 0183 12V DC 10 to 30 Standby typ 0 1A Maximum 0 4A 20 C to 55 C Height 98mm Width 225mm Depth 150mm App 2kg REC
121. o d f N TECHNICAL MANUAL FOR COMPACT VHF DSC RM2042 S P RADIO A S AALBORG gt DENMARK amp SAILOR SAILOR Porsvej 2 PO Box 7071 DK 9200 Aalborg SV Denmark Phone 45 9634 6100 Fax 45 9634 6101 Telex 69789 ECI DK E mail sailorQsailor dk Web www sailor dk RM2042 INSTALLATION INFORMATION RM2042 This VHF DSC RM2042 is delievered with the service switch in position Service Mode After programming of MMSI number the service switch must turned into position User Mode Please referto the drawing below User mode Service mode 9401 9716 CONTENTS INTRODUCTION GENERAL DESCRIPTION TECHNICAL DATA CONTROLS PRINCIPLE OF OPERATION AND BLOCK DIAGRAM INSTALLATION MOUNTING POSSIBILITIES POWER SUPPLY HANDSET ANTENNA ELECTRICAL CONNECTIONS SERVICE MAINTENANCE ALIGNMENT INSTRUCTIONS PROPOSAL FOR NECESSARY TEST EQUIPMENT TROUBLE SHOOTING PERFORMANCE CHECK ADJUSTMENT PROCEDURE REPLACEMENT OF COMPONENTS REPLACEMENT OF MODULES NECESSARY ADJUSTMENTS AND CHECK AFTER REPAIR PIN CONFIGURATIONS MECHANICAL DESCRIPTION MECHANICAL DISASSEMBLING AND UNITS LOCATION CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS INTERFACE MODULE 1 PART NO 626941 MICROPROCESSOR MODULE 2 PART NO 626942 RECEIVER MODULE 3 PART NO 626943 DISPLAY UNIT MODULE 4 PART NO 626944 KEYBOARD UNIT MODULE 6 PART NO 625636 MICROTELEPHONE INSTALLATION SPECIAL INSTALLATION WITH 2 MIGROTELEP
122. om view Screw for front plate Screw for Microprocessor module Clock backup battery DSC AF output selection switch Balanced AF output Switch for mode select level adjustment 727499 727498 Cable for Display module Remove indicated cable and screws for removal of Micro processor module and draw the module gently toward the front PAGE 4 1 9716 5 1 5 2 5 3 5 4 5 6 RM2042 CONTENTS CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS INTERFACE MODULE 1 PART NO 626941 5 1 MICROPROCESSOR MODULE 2 PART NO 626942 5 7 RECEIVER MODULE 3 PART NO 626943 5 13 DISPLAY UNIT MODULE 4 PART NO 626944 5 23 KEYBOARD UNIT MODULE 6 PART NO 625636 5 27 RM2042 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS 5 1 INTERFACE MODULE 1 PART NO 626941 All connections to external equipment and the corresponding interface circuits are located at the interface module The interface circuits are in this discription divided into the following blocks which again are divided into an analog and a digital groupe Analog interface Loudspeaker amplifier Balanced TX AF amplifier Unbalanced TX AF amplifier 12V 24V wiring circuit 5V power supply Power failure reset circuit Digital interface S P bus interface Printer interface C2149 PC interface NMEA interface Navigational equipment interface according to the National Marine Electronics Association LOUDSPEAKER AMPLIFIER The loudspeaker amplifier is build up a
123. plug min 169mm max 185mm 27597 4pcs 5mm 238mm OE DT AED eeh Weight Mounting kit H2057 0 4 kg VHF DSC RM2042 2 0 kg PAGE 2 3 2 INSTALLATION RM2042 This mounting kit is used for console flush mounting of 1 4 box and mini 1 4 box Free distance must be kept to allow free air circulation ambient temperature max 40 H2063 min 160mm ja ld QUO m UUU OBO JOB DODODO Du 27580 Es m 253mm sl N 4 240mm A KS 5 4 5mm 45mm 5 OY SI i 4 stk 6mm 1 1 gt 4 stk 3 5mm uns for DIN 963 E E Mounting H2063 1 0 kg VHF DSC RM2042 2 0kg Weight 4 pcs M3x30 8 pcs M5x8 4 pcs M5x30 27581 PAGE 2 4 2 INSTALLATION 2 2 POWER SUPPLY The standard power supply for the VHF DSC unit RM2042 is 12V DC For 24V DC supply an external power supply with the type number N420 can be used The N420 is in principle a 24V DC to 13 2V DC serial regulator For 110V AG 127V AG 220V AC or 237V AC operation an external power supply with the type number N163S must be used together with N420 2 3 HANDSET The handset is normaly connected directly to the VHF radiotelephone butina VHF DSC installation with the RM2042 the handset must be connected to this unit instead The handset
124. r and LO FM detector and AF amplifier are all included in the integreted circuit U1 which is of the type MC3372 From the 1st IF buffer amplifier the signal is led to the 2nd mixer where it is mixed with LO2 The second local oscillator frequency is crystal controlled and is tuned to 14 85 MHz by the trimming capacitor C34 The LO2 signal is generated by a build in bipolar NPN transistor which form a colpitts oscillator by means of the crystal X1 and four external capacitors The output of the 2nd mixer is led to the ceramic filter FL2 which is centered at 450 kHz The 2nd IF signal is then amplified by the limiting IF amplifier that approximately has a gain of 92 dB The signal is detected by the build in quadrature detector which use an external capacitor and ceramic resonator as the 90 phase shift network After detection the signal is amplified by the build in AF amplifier and the carrier component at 450 kHz is removed by means of the resistor R38 and the capacitor C51 The output level from the following de emphasis filter is adjusted by the trimming resistor R66 to 250 mV with an input carrier modulated with 1 kHz to give a peak frequency deviation of 3 kHz As an extra facillity the MC3372 has a level meter output which in this design only is used to adjust the front end filters The level meter output is formed as a current generator that produce a DC current proportional to the carrier level measured in dBm The current is tr
125. r is followed by two buffers an oscillator buffer and an LO buffer To minimize the capacitive loading of the oscillator the output signal is taped across a relative large capacitor of 56pF The taped signal is buffered by the transistor Q6 which is working as an emitter follower The output signal from is loaded with a resistor 01470 which will camouflage the capacitive loading by the input of the LO buffer and then stabilize the oscillator buffer at higher frequencies In the LO buffer the signal is amplified to give an output level of 7 dBm into 500 The LO buffer is build up around the transistor Q7 which is used in a commen emitter configuration By means of the two capacitors C89 and C90 the output impedance is matched to the mixer input of about 1700 CRYSTAL FILTER AND FIRST IF BUFFER AMPLIFIER The receiver adjacent channel selectivity is obtained by means of the crystal filter FL1 at the 1st IF and the ceramic filter FL2 at the 2nd IF The input and output of the crystal filter is impedance matched to 3k which is obtained by means of the resistors R13 R14 R15 and R16 From the 1st mixer the signal is led through the crystal filter to the input of the 2nd IF buffer amplifier This amplifier is build up around the dual gate MOSFET transistor Q4 which has a tuned drain circuit consisting of the inductor L5 and the capacitors C29 and C31 SECOND MIXER amp LO CERAMIC FILTER FM DETECTOR AND AF AMPLIFIER The 2nd mixe
126. rimming capacitor is constructed with a ceramic plate and is therefore easily damage by pressure ADJUSTMENT OF FRONT END FILTERS AND MIXER TRANSFORMERS The front end filters contains four adjustable coils and the mixer includes two adjustable transformers All components are adjusted to maximum meter deflection at the field stregth meter output and the mixer output transformer TR2 3 is afterwards adjusted to minimum distortion 1 Apply an unmodulated carrier with the frequncy 156 525 MHz to the antenna terminal and adjust the output level to 80 dBm EMF 33 dB uV 2 Connect multimeter to the field strength meter output pin 13 at U1 for measuring the DC voltage 3 Adjust the coils L1 3 L2 3 L3 3 L4 3 and the two transformers TR1 3 and TR2 3 to maximum meter deflection 4 Connect a distortion meter to the output of the deemphasis filter pin 8 at U3 3 3 5 Modulate the RF carrier witha 1 kHz tone to a peak diviation of 3 kHz Increase the RF carrier level to 30 dBm EMF 83 dB uV 6 Adjust the output transformer TR2 3 to minimum distortion and control that the distortion is less than 3 ADJUSTMENT OF AF OUTPUT LEVEL The AF output level from the detector is adjusted to match the RX AF input level from the connected VHF tranceiver 1 Connect RF signal generator to the antenna input and adjust the carrier level to 50 dBm 63 dB uV Modulate the carrier with 1 kHz to a peak frequency diviation of 3 kHz 2
127. round the integrated power amplifier TDA7052 U4 which has a voltage gain of about 40dB and is able to deliver about 0 5 Watt into an 8 ohm loudspeaker In a normal operation situation where no call signal has been detected the received signal from the external connected VHF orthe build in channel 70 receiver will be leaded to the internal loudspeaker The received signal comming from the receiver module is buffered by an operational amplifier U3 4 and is then led to the volume control at the front panel where it is attenuated The attenuated signal is buffered at the interface module by the transistor Q8 and then finaly led to the power amplifier and loudspeaker If a call signal distress or ordinary is received the microprocessor will generate an indication signal gated 600Hz tone that will be leaded to the loudspeaker instead of the received signal The received signal is removed from the loudspeaker by means of the transistor Q3 which at the same time is grounding the signal and removing the bias for the buffer transistor Q8 The controle signal to transistor is generated by the printer interface unit 010 and is filtered by R13 R14 and C52 to avoid a suddenly change in the bias of transistor Q8 which else would result in an irritating DC blop in the loudspeaker BALANCED TX AF AMPLIFIER The VHF DSC RM2042 has two seperate transmitter outputs an unbalanced with a low generator impedance and a balanced with a 600 ohm generator impe
128. s of the 9 pole SUB D connector P2 1 at the interface module 2 Reduce the output RF power from the VHF tranceiver to 1 Watt 3 Connect a modulation meter through an attenuator to the antenne terminal at the VHF tranceiver NOTE To protect the modulation meter from damages caused by the large output voltage it is necessary to use an attenuator of about 30dB 4 Change the operation mode of the RT2047 or the RT2048 from user to service mode Selecta DSC VHF channel different from channel 70 and change the operation mode back to user mode 5 Change the operation mode of the RM2042 from user to service mode 6 Turn the switch S1 1 at the interface module 1 into the position 1 PAGE 3 6 9403 3 SERVICE RM2042 7 Start the transmission of a mark signal by pressing FUNC and selecting Test and mark in the display 8 Adjust R22 until the peak frequency diviation is 2600 Hz 10 9 Start the transmission of a space signal 10 Controlthat the peak frequency diviation is 4200 Hz 10 11 Change the operation mode of the RM2042 back to user mode 12 Change the DSC VHF channel setting back to channel 70 ADJUSTMENT OF BALANCED TX AF AMPLIFIER When the RM2042 is used as an encoder in a semi automatic system the balanced TX AF output has to be used The balanced amplifier is build up around the operational amplifier U3 2 1 the transistor Q4 1 andthe transformer TR1 1 The output level is adjustable to 0
129. s the AF output port swiched to supply the signal on a 600 ohm balanced output port The level can be adjusted to OdBM 10dB by means of a trimming potentiometer When the VHF port communicaiion switch is set for an automatic system the serial communication link to the transceiver will be connected to the 9 pole output connector for the VHF The remaining circuits on this module consists of input buffers and level shifters for the i o links to the microprossor These links are used for the NMEA interface printer interface and the interface to C2149 remote distress unit or a PC for programming or remote control PAGE 1 6 1 INTRODUCTION RM2042 MICROPROCESSOR The microprocessor module contains as the central unit the microprocessor IC a fast 16 bit type with its external program memory and RAM circuits The microprocessor clock signal is derived from an 8 MHz XTAL oscillator The non volatile memory consist of a single 8kByte EEPROM where the received messages and internal programable settings are stored As the microcomputer operates with an asyncroneous bus configuration some external control logic is needed to generate the appropriate interrupt signals etc This block includes the reset circuitry as well Address selection of the individual peripheral devices is done by means of a 4 to 16 line address decoder The answer back from these circuits to the microprocessor is done via the uP control logic The time division on the micropro
130. steps for regulation The D A converter is build up around four D type flip flops integreted in U1 and the operational amplifier U2 1 The four D type flip flops is used as parallel input output latches and each of the output pins Q1 Q2 and Q4 are connected through one of the resistors R8 R9 and R10 to the inverting input of U2 1 The output voltage from the D A converter i e output at U2 1 is divided by 2 by means of two resistors R16 and R18 and is then led to the non inverting input at the amplifier U2 4 The inverting input at this amplifieris connected to a resistor network which include the NTC resistor R12 This circuit compensates for the temperature change of the brightness controle voltage The output from the amplifier U2 4 is connected to the display brightness controle at pin 6 in the connector Ji BACKLIGHT CONTROL The current through the backlight LED s is controlled by the transistor Q1 which again is controlled by the amplifier circuit build up around U2 2 The current running in the backlight LED s is also running through the emitter resistors and the voltage across R25 and R28 is therefore a function of the backlight current This voltage will almost be equal to the voltage atthe non inverting terminale because ofthe relative large voltage gain given by the ratio of R20 to R22 The voltage at the non inverting input is only determined by the two flip flops Q5 and Q6 integreted in U1 and the voltage divider g
131. t voltage drops more than 5 with respect to the programmed output voltage This error signal is watch every one milli second by the microprocessor to ensure a controlled power down sequence PAGE 5 18 9341 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 d PAGE 5 19 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 COMPONENT LOCATION RECEIVER MODULE 3 Seen from component side with upper side tracks Seen from component side with lower side tracks PCB rev 26943E PAGE 5 20 9716 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 RECEIVER MODULE 3
132. ted DIS Selects the user programmed address book where you can save up to forty different ADDR BOOK complete call sequences This button is used to enter the call composition menu where the entry will be either a station CALL name or a MID number If you press Edit under this menu the following menus will guide you through the complete composition of a call This button is used to initiate a call transmission when a call has been composed or selected SEND The unit permits the transmission by an appropriate readout to guide the user NOTE Activated simultaneous with the DISTRESS button a distress call will be initiated This button is used to select the next menu in an input sequence and at the same time the NEXT user accepts the content of the actual display read out 0 2 m 9 o 1 INTRODUCTION RM2042 BEDT STOP ENT This button is used to step backward to the last selected menu window in an input sequence These buttons is used to scroll between the possible choices in the actual diplayed menu Note that these buttons only will be active when their signs are shown in the display readout These buttons are used to scroll between the input fields in the actual displayed menu window When an input has been keyed in and the lt button is pushed the last input will be cleared Digits 0 to 9 used for numerical input data to the unit These characters will be selected when the user is in a mod
133. tor is generating a tone signal where the frequency is altered between 1300 Hz mark 1 and 2100 Hz space 0 in accordance with the input bit stream The frequency of the mark and space signals is controlled by the crystal X2 which is working at 3 5795 MHz The generated FSK signal is led through the transmit filter to the analog output Aout at pin 34 The output signal is then led to the external transmit filter which is a 2nd order Chebychev low pass filter with 0 1 dB ripple and a cutoff frequency of 3 9 kHz This filter is build around the operational amplifier U7 4 and the output level is 0 dBm 6000 2 db 9811 5 15 5 CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS RM2042 SIGNAL SWITCHES AND CONTROL LOGIC The receiver module contains two analog switches which are included in the CMOS IC U6 The first switch is only used for loop back test purpose and is controlled by the microprocessor The second switch is used for switching between the build in channel 70 receiver and the connected VHF radiotelephone This switch is controlled by the logical signal Q which is generated by combinating the output of the channel 70 carrier detect circuit and the two logic signals A and B The function of the signal switches and the corresponding control logic is described by the block diagram below which also include the logical circuits used to genereate the CH70 CARRIER DETECT VHF CARRIER DETECT and MODULATION DETECT signals
134. tput level which shall be 220mV reference in the following measurements Change the input frequency to 1300 Hz and control that the output level increase with 1 dB 0 5 dB Change the input frequency to 2100 Hz and control that the output level decrease with 2 dB 0 5 dB with reference to the value measured in point 5 Change the input frequency to 650 Hz and control that the output level decrease by more than 20 dB with reference to the value measured in point 5 Change the input frequency to 3000 Hz and control that the output level decrease by more than 20 dB with reference to the value measured in point 5 CHECK OF TX AF LEVEL The TX AF level is controlled by checking that the peak diviation of the transmitted RF signal is correct NOTE To perform this test it is necessary to change the operation mode of both the RM2042 and the VHF tranceiver from user to service mode This change of operation mode is only allowed for trained technicians and the information of how to do itis therefore only included in the DSC VHF INSTALLATION GUIDE 1 Connect the RM2042 to the VHF tranceiver by means of the 9 pole SUB D connector P2 1 at the interface module Reduce the output RF power from the VHF tranceiver to 1 Watt Connect a modulation meter through an attenuator to the antenne terminal at the VHF tranceiver NOTE To protect the modulation meter from damages caused by the large output voltage it is necessary to use an attenuator
135. vironmental conditions present at sea In spite of all the precautions taken in the design of this unit a regular service and maintenance is recommended to increase unit life time and user safety S P Radio isthe European leading manufacturer of maritime radio communication equipment a position which has been maintained by means of constant and extensive product development We have a world wide network of dealers with general agencies in fifty countries All our dealers are well trained and will be able to make service on all products PAGE 1 1 1 INTRODUCTION RM2042 11 GENERAL DESCRIPTION RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 RM2042 PAGE 1 2 is a complete VHF receiver modem for digital selective calling on the VHF channels maintains a continous watch of the calling channel 70 by means of the build in receiver decodes and encodes all the messages applicable for a VHF Class A DSC equipment as prescribed by international authorities is intended for use both as a part of the safety system on board as well as a convenient automatic calling device ship ship ship shore and when implemented from land telephone subscriber to ship can be connected to the C2149 GMDSS alarm unit for remote control of distress calls has an output for an external alarm unit indicating reception of distress calls has an NMEA0183 i

Sailor RM2042

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