25 W
atts
VHF/FM
Marine T
ransceiver
GX1250SA
SER
VICE MANUAL
VOL/
PWR
STANDARD HORIZON
Страница 1: ...25WattsVHF FM MarineTransceiver GX1250SA SERVICE MANUAL VOL PWR STANDARD HORIZON ...
Страница 2: ...t and Confirmation 14 4 6PLL frequency Adjustment 15 4 7Modulation Level Adjustment and Confirmation 15 4 8Receiving Local Level Adjustment 16 4 9Receiving Front End Adjustment and Confirmation 16 4 10Receiving IFAdjustment 17 4 11ReceivingSensitivityConfirmation 17 4 12Receiving Weather alerttone Adjustmentand Confirmation 18 4 13LCD Visual Check 19 4 14Initialsettings 19 4 15FrequencyList 20 5 S...
Страница 3: ...ion The following data pertaining to the transceiver is necessary to fill out the license application Type Acceptance FCC Part 80 Output Power 1 Watt low and 25 Watts high Emission 16K0F3E Frequency Range Transmitter 156 025 to 157 425 MHz Receiver 156 050 to 163 275 MHz FCC Type Number APV0493 Industry Canada Type Approval 363822161LVCA Additional FCC and Industry Canada data including licensing ...
Страница 4: ...to the phase de tector 2 1 2PhaseDetector The phase detector compare between frequency from the pro grammable divider fp and the reference frequency fr 2 1 3ReferenceDivider The 21 855 MHz frequency produced by the crystal oscillator XP01 passes through pin 1 of PLL IC QP02 and applied to the reference divider The reference frequency 5 kHz is produced by dividing the reference oscillator frequency...
Страница 5: ...4 MHz and a second IF of 455 kHz The receiver circuit consists of RF amplifier QR02 first mixer QR04 first IF amplifier QR30 second lF AMP circuit QR60 audio circuits Q101 Q107 to operate in the frequency range of 156 050 to 163 275 MHz 2 2 1RFAmplifier Circuit The incoming signal through the antenna socket JT01 passes through the low pass filter comprised of CT64 CT63 LT06 CT62 CT52 RT58 LT05 CT6...
Страница 6: ... First IF AMP First IF signal 4 Audio signal Second IF IC QR60 TK10487M B Crystal oscillator Ceramic filter 20 14 13 11 1 4 6 QR61 MA714 RR66 CR65 RR64 RR65 RR63 CR63 CR64 QR30 2SC2714 Y Second mixer Oscillator Second IF AMP Quadrature detector XP01 21 855 MHz Noise AMP FR60 KBF 455RS 15A 15 17 SCAN CONTROL Noise 2 2 6NoiseSquelchCircuit A portion of the audio signal from pin 11 of QR60 is applied...
Страница 7: ...o talk PTT switch of the microphone is pressed pin 3 of JL01 microphone connector is pulled Lo 0 V This is applied to pin 1 of microprocessor QL01 When this happens pin 3 of microprocessor QL01 TX cont outputs a Lo to the TX B switch Q204 which turns it on and supplies to the transmit circuits The audio signal input from pin 1 of JL01 microphone connector is applied to the pre emphasis circuit com...
Страница 8: ...The signal then passes through antenna socket JT01 and output through the antenna 2 3 4High LowPower The RF power can be set to either 1 watt or 25 watts by the H L key on the front panel of the transceiver If 1 watt is selected pin 2 of microprocessor QL01 pulls the emitter of QT53 low and 0 6 V is applied to the automatic power control APC circuit If 25 watts is selected pin 2 of QL01 outputs 5 ...
Страница 9: ...R 8 V SWED B Q202 2SA1162 QP01 QP04 QP05 BATT CHK QR30 QR60 ZZ01 RX 8V SWED 8V 5V REGULATOR Q205 2SD999 Q206 02CZ5 6Y QP02 QP03 Q106 Q111 QR62 SWED 5V 5V 5V TX B switch Q204 DTB113ZK QT01 QT02 QM02 QP06 Q203 Q102 ZZ01 TX 8V QL02 QL03 QL04 QL05 QL13 QL14 Q201 NJM7808FA Figure 2 7 Power supply block diagram 2 4Powersupply The power supply block is diagrammed below Figure2 7 ...
Страница 10: ... RXD I I UP UART DATA Intput Terminal 21 P43 INT1 I O CMOS KEY SCAN L H SCAN 22 P42 INT0 I O CMOS KEY UP L H 23 P41 φ I O CMOS KEY DOWN L H 24 P40 I CMOS KEY16 9 L H 16 9 25 RESET SYS RESET I Reset Signal Input 26 P71 XCIN I O SYS CMOS NC O L Not used 27 P70 XCOUT I O SYS CMOS NC O L Not used 28 XIN SYS XIN I Crystal Osillator Input 29 XOUT SYS XOUT O Crystal Osillator Output 30 Vss SYS Vss I Grou...
Страница 11: ... SEG 15 O Segment 15 Output Terminal 63 SEG7 O SEG SEG 16 O Segment 16 Output Terminal 64 SEG6 O SEG SEG 17 O Segment 17 Output Terminal 65 SEG5 O SEG SEG 18 O Segment 18 Output Terminal 66 SEG4 O SEG SEG 19 O Segment 19 Output Terminal 67 SEG3 O SEG SEG 20 O Segment 20 Output Terminal 68 SEG2 O SEG SEG 21 O Segment 21 Output Terminal 69 SEG1 O SEG SEG 22 O Segment 22 Output Terminal 70 SEG0 O SEG...
Страница 12: ... COM1 COM2 Figure2 8Segmentconnectiondiagram Figure2 9Commonconnectiondiagram 2 5 3LCD The microprocessor QL01directly drive the LCD QL15 QL15 is the dynamically driven field effect LCD Liquid Crys tal Display 22 segment terminals and 2 common terminals with 1 2 duty ratio and1 2 bias drive the display system ...
Страница 13: ...y Screw Lock Bond to the Volume Resistor w and e 3 3TX RXP C boardremoval a Use a soldering iron to melt soldered portions a Remove Antenna connector JT01 b Use a soldering iron to melt soldered portions b Remove QT03 c Use a soldering iron to melt soldered portions c Remove QT52 d Use a soldering iron to melt soldered portions d Remove QT55 e Use a soldering iron to melt soldered portions e Remov...
Страница 14: ...o 01 to 06 will be set as followings Figure 4 2 Short circuit Pin No 1 TEST and Pin No 2 GND in Four pin connector JL03 with a cable for adjustment then power on GX1250SA with pressing UP key b In Scan mode GX1250SA scans between WX10 and EXP04 automatically DISPLAY RX Frequency TX Frequency SCAN MEMORY MHz MHz EXP01 156 050 156 050 X EXP02 157 425 157 425 X EXP03 163 275 158 675 X EXP04 155 050 1...
Страница 15: ...issionPower AdjustmentandConfirmation Adjust transmission power in High and Low mode And check RF carrier power in the bandwidth Adjustment a For High Power press PTT in CH16 and adjust RT51 to set RF power to 25 0W b For Low Power set GX1250SA at Low Power with H L key in CH16 press PTT and adjust RT51 to set RF power to 0 8W Confirmation a Set channel to USA01 press PTT and check transmis sion p...
Страница 16: ...nerator Out put level becomes 1 10 f Adjust output level of Audio Generator to set reading of Modulation Analyzer to 3 0kHz This level is standard modulation input level g Turn 20dB up 10 times the output of Audio Generator from the standard modulation input level h Confirm that the reading of Modulation Analyzer is in 4 4kHz to 4 6kHz i Repeat the step d to g several times Confirmation a Set Audi...
Страница 17: ...st LR07 and LR08 to set level of Spectrum Analyzer to the same and maximum level Figure 4 7 4 9ReceivingFront End AdjustmentandConfirmation Figure 4 9 Figure 4 8 Adjustment a Set the Spectrum Analyzer as below center frequency 159 000 MHz span 20 00 MHz RBW and VBW 30 kHz SWP 56 0 ms b Turn SQL off and set channel to CH01 c Connect measurement cable to Front End adjustment point marked F E TP and ...
Страница 18: ...ngIFAdjustment Adjust receiving IF Coil Adjustment a Setup GX1250SA as shown in Figure 4 10 and set chan nel to CH06 156 300MHz b With receiving the signal from Signal Generator adjust LR30 and LR31 to the positions where reading value of DC voltage meter that is connected to the test point marked IF TP becomes highest While doing this adjust output of Signal Generator not to saturate DC voltage m...
Страница 19: ...e end and press Scan key to start Scan operation c Turn on SG output Check that Scan operation doesn t stop d Turn up deviation from 1 0kHz and measure Weather Alert sensitivity at modulation frequency of 1050Hz Check that Scan operation stops at WX10 and alert sound is emitted Also check that deviation is not over 2 5kHz at that time Scan stops and alert sounds e Press WX key and check that alert...
Страница 20: ...ndix1 About MIC Tool Deviation Measurement Tool Use the following parts as MIC tools for this product Schematic Diagram is as shown in Figure 4 16 1 6 pin connector ZHR 6 Housing by JST 2 Contact SZH 002T P0 5 3 Cable AWG 26 28 4 Capacitor Alminum Electrolytic Capacitor or Tantalum Electrolytic Capacitor discrete Appendix2 Setting Process of EXP CH a Short circuit the land that is marked EXP on th...
Страница 21: ...161 950 28 28 28 157 400 162 000 Channel Number Frequency MHz USA INT CAN TX RX 60 60 156 025 160 625 61A 61A 156 075 156 075 61 156 075 160 675 62 156 125 160 725 62A 156 125 156 125 63A 156 175 156 175 63 156 175 160 775 64A 64A 156 225 156 225 64 156 225 160 825 65A 65A 156 275 156 275 65 156 275 160 875 66A 66A 156 325 156 325 66 156 325 160 925 67 1 156 375 156 375 67 67 156 375 156 375 68 68...
Страница 22: ...put 25 W Hi 1 W Lo Conducted Spurious Emissions 65 dB Hi 50 dB Lo Audio Response within 2 8 of a 6 dB octave pre emphasis characteristic at 300 to 3000 Hz Audio Distortion 5 Modulation 16K0F3E Frequency Stability 20 to 50 C 0 0005 FM Hum and Noise 40 dB 5 3Receiver Frequency Range 156 050 to 163 275 MHz Sensitivity 20 dB Quieting 0 40 µV 12 dB SINAD 0 35 µV Squelch Sensitivity Threshold 0 20 µV Mo...
Страница 23: ...0 DD9000830 DD9001030 DD9001530 DD9002030 DD9003030 DD9003530 DD9004030 DD9005030 DD9106030 DD9107030 DD9108030 DD9109030 DD9110030 DD9XXXX30 DD9XXXX3A DD9XXXX36 Tem Char CK CK CK CK CK CK CJ CH CH CH CH CH CH CH CG PJ PH RJ RH SJ SH TJ TH UJ SL Ref Desig DD5A00330 DD5000530 DD5000830 DD5001030 DD5001530 DD5002030 DD5003030 DD5004030 DD5005030 DD5106030 DD5107030 DD5108030 DD5109030 DD5110030 DD5X...
Страница 24: ...500630 2 2 µF 6 3V CP13 1 EY22403510 0 22 µF 35V CP14 1 DD50008300 0 8 pF 0 25 pF CP15 1 EY22403510 0 22 µF 35V CP16 1 EY68601020 68 µF 10V CP17 1 EY10601620 10 µF 16V CP18 1 DD91070300 7 pF 0 5 pF CP23 1 DK96102300 1000 pF 10 CP24 1 DK96102300 1000 pF 10 CP25 1 DK96102300 1000 pF 10 CP26 1 DK96102300 1000 pF 10 CP27 1 EY22601620 22 µF 16V CR01 1 DD95180300 18 pF 5 CR02 1 DD91090300 9 pF 0 5 pF CR...
Страница 25: ...12680010 0 068 µH LT04 1 LU12680010 0 068 µH LT05 1 LL635004A0 4T COIL LT06 1 LL635004A0 4T COIL LT07 1 LL050003A0 3T COIL LT08 1 LC12720120 2 7 µH Q101 1 HC10120050 TA7252AP Q102 1 HZ20009210 DAN202U Q103 1 HZ20008210 DA204U Q104 1 BA20030210 DTC114YU Q105 1 BA20030210 DTC114YU Q106 1 BA10034210 DTA123YU Q107 1 HC10110090 NJM567M Q109 1 HZ20009210 DAN202U Q110 1 BA20019210 DTC114TU Q111 1 BA12311...
Страница 26: ...2 1 NN05101610 100 Ω 5 1 16W RR03 1 NN05562610 5 6 kΩ 5 1 16W RR04 1 NN05102610 1 kΩ 5 1 16W RR05 1 NN05101610 100 Ω 5 1 16W RR07 1 NN05560610 56 Ω 5 1 16W RR09 1 NN05102610 1 kΩ 5 1 16W RR10 1 NN05472610 4 7 kΩ 5 1 16W RR11 1 NN05101610 100 Ω 5 1 16W RR12 1 NN05101610 100 Ω 5 1 16W RR30 1 NN05332610 3 3 kΩ 5 1 16W RR31 1 NN05102610 1 kΩ 5 1 16W RR32 1 NN05224610 220 kΩ 5 1 16W RR33 1 NN05101610 1...
Страница 27: ...16W RL03 1 NN05103610 10 kΩ 5 1 16W RL04 1 NN05103610 10 kΩ 5 1 16W RL05 1 NN05473610 47 kΩ 5 1 16W RL06 1 NN05000610 0 Ω 5 1 16W RL07 1 NN05102610 1 kΩ 5 1 16W RL08 1 NN05102610 1 kΩ 5 1 16W RL09 1 NN05102610 1 kΩ 5 1 16W RL10 1 NN05102610 1 kΩ 5 1 16W RL11 1 NN05102610 1 kΩ 5 1 16W RL12 1 NN05473610 47 kΩ 5 1 16W RL13 1 NN05101610 100 Ω 5 1 16W RL14 1 NN05102610 1 kΩ 5 1 16W RL15 1 NN05101610 10...
Страница 28: ...1103A0 11 pF 2 0 50V CV11 1 DD91100360 10 pF 0 5 pF CV20 1 DK96102300 1000 pF 10 CV21 1 DK96102300 1000 pF 10 CV22 1 DK96102300 1000 pF 10 CV23 1 DK96102300 1000 pF 10 LV01 1 LC12720120 2 7 µH LV02 1 LC12720120 2 7 µH LV03 1 LA70350250 VCO COIL LV04 1 LC12720120 2 7 µH LV05 1 LC12720120 2 7 µH LV06 1 LC11020150 1 µH QV01 1 HZ40017050 1SV231 QV02 1 HZ20029050 1SS314 QV03 1 HZ40010050 1SV214 QV04 1 ...
Страница 29: ...EW FOR TX RX PCB FIX 060B 1 389B861030 LABEL USE FUSE 6A ONLY 061B 1 175B109010 VCO SHIELD 062B 1 175B056010 BUFFER FOR VCO SHIELD 072B 1 457X064020 SLEEVE CASE WHT 072B 1 457X064120 SLEEVE CASE BLK 074B 4 444X010010 SCREW FOR SLEEVE CASE DIE CAST 075B 1 457X265010 NAME INDICATOR WHT 075B 1 457X265110 NAME INDICATOR BLK 076B 2 444X011010 NUT FOR SLEEVE CASE 078B 1 175B277010 REAR PACKING PACKAGE 0...
Страница 30: ...L 1 5 0 1 3 Bx 2 PL 0 1 0 0 7 B PG0 1 N 0 0 1 0 0 6 B 0 1 9 B 0 2 8 Bx 2 0 2 7 Bx 4 0 0 1 B 0 2 0 B 0 2 6 B 0 3 2 B 0 3 3 B 0 3 4 Bx 2 0 6 1 B 0 6 2 B 0 7 4 Bx 4 0 7 2 B 0 7 8 B Q T 5 5 0 3 5 B Q T 0 3 Q T 5 2 J T 0 1 C T 6 4 0 7 6 Bx 2 P1 0 1 PV0 1 WG3 0 WL0 1 WG0 1 0 3 8 Bx 3 0 7 5 B 0 1 7 B 0 1 6 B 0 3 0 B 0 3 1 B 0 2 7 Bx 4 0 2 8 Bx 2 01 0015 ...
Страница 31: ...0 8 V 0 1 0 V 0 0 1 V Z 0 0 2 N0 0 1 0 0 1 S 0 0 2 S 0 0 1 T 0 0 2 T 0 0 7 V 0 0 9 V 3 0 1 S 0 6 0 B 0 0 1 S 0 1 1 S 0 0 2 Vx 2 0 0 5 S 0 0 6 Vx 4 0 0 3 Vx 4 0 0 4 Vx 8 0 0 5 Vx 4 0 0 7 V 0 1 1 S 0 0 3 S U0 0 AB0 0 1S 1 ONLY 01 0015 ...
Страница 32: ... WEATHER ALERT DETECTOR WEATHER DETECTOR Q102 DAN202U TX B PROTECT VOLTAGE REVERSE Q101 TA7252AP AF AMP NJM4558M Y QM02 MICROPHONE AMP DTC114YU Q105 Q104 Q109 DTN202U ALERT MUTE WEATHER 2SA1162 G Q202 RX B SWITCH Q204 DTB113ZK Q205 2SD999 Q206 02CZ5 6Y 5V REGULATOR 5V 8V UL LOCK Lo H L CONT TX B SWITCH MUTE DTA123YU Q106 SQL BEEP BEEP TONE AMP P101 RX TX RESET XL01 CSA2 00MG OSCILLATOR YY01 YY06 K...
Страница 33: ...G ORG ORG ORG 028B WG457X2010 Shown from component side Shown from component side Shown from component side 1 15 WL01 W001 W001 WL01 15 1 TP WA BRN ORG ORG ORG ORG ORG WG175B1013 J102 RED BLK 6 1 6 1 J101 DEV TX B 15 14 1 2 J103 2 1 2 1 P101 RX TX ZZ01 VCO ZZ01 VCO WG30 BRN ORG WG01 EG30 SPEAKER CT63 CT64 JT01 ANTENNA CONNECTOR Shown from solder side WG457X2030 YT50 RX B OUT ERROR LR05 TP F E LOCA...
Страница 34: ...9 1K T CP11 2 2u 6 3V RP08 5 6K RP10 1K RP02 120K RP01 1K CP02 0 01 CP05 47u 10V RP07 5 6K D YY05 1 CP24 1000p D YY06 1 CP25 1000p D YY07 1 CP16 68u 10V QP06 DAP202U 2 1 3 RP12 56 1 CP26 1000p T CP15 0 22 35V CM04 10u 16V QM02 NJM4558M Y 1 2 3 4 5 6 7 8 RM03 33K CM02 0 001 RM07 47K RM14 150K CM03 0 1 RM01 4 7K RM02 220K CM01 0 01 QM01 DAN202U 2 1 3 RM04 5 6K RM13 3 3K CM05 0 1 CM07 0 01 RM12 5K 1 ...
Страница 35: ...WA QP02 CP06 QT02 RT07 CT06 RT06 LT02 RT01 RT02 RT05 CT07 QT01 CP27 RT60 QP03 QP07 C118 8 5 1 1 16 8 9 4 QM02 RM13 CM05 RM03 RM14 RM07 RR67 CP04 RP04 CT69 LT01 CT04 CT03 RT04 RT03 CP08 RT51 RT53 CM03 R110 R202 C204 RT56 CT09 CT10 LT03 LT04 R111 C114 R108 R118 P101 RX TX B C E B C E B C E B C E B C E Shown from component side QP03 Q204 Q106 C E B Q110 Q111 C E B C E B Pattern A Look Red Pattern B P...
Страница 36: ...04 Q103 C201 R107 C113 J102 6 1 7 1 C203 R104 Q201 R101 Q101 CP18 QP01 Q107 J101 FR61 RR60 CR67 RR62 15 10 11 20 14 1 5 8 4 1 1 2 QR62 QR30 MIC TP R106 CR15 LR30 J103 2 1 CP17 LR06 LR08 LR07 QR02 LR04 LR02 LR01 QT05 CT65 JT01 QT04 LT07 TP LOCK V QR05 CR22 RR11 QR04 QR01 CR06 CR04 CR05 CR03 RR01 CR24 CR25 CR26 CR21 C112 RR33 CR60 CR61 CR62 RR63 CR64 RR66 CR72 CP01 RP11 CP12 CP11 RT57 CP23 CP26 RP09...
Страница 37: ...3 CL 190Y CD T CL05 0 001 CL11 0 001 RL34 1K WG01 1 2 3 4 5 6 QL07 02CZ5 6Y 2 1 3 WG30 1 2 QL11 02CZ5 6Y 2 1 3 RL05 47K CL10 0 001 JL01 B6B ZR SM3 TF 1 2 3 4 5 6 1 2 3 4 5 6 QL10 02CZ5 6Y 2 1 3 J103 1 2 RL22 47K RL39 1K CL09 0 001 CL08 0 001 RL45 47K J102 1 2 3 4 5 6 RL26 1K QL09 02CZ5 6Y 2 1 3 QL06 DTC114YU 1 2 3 CL15 0 001 RL25 15K RL37 1K RL24 470 J101 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QL02 C...
Страница 38: ... WG457X2020 WG457X2020 QL06 C E B PL01 CONTROL PG01 VOLUME PG01 VOLUME PL01 CONTROL CL04 RL34 14 6 1 15 1 25 2 1 JL02 RG02 WG01 RG01 QL15 SCAN 16 9 H L WX RL35 CL11 CL09 CL10 QL10 QL09 JL01 RL24 LL01 RL03 CL03 RL07 RL08 RL09 E B C QL06 QL01 QL14 1 1 1 6 20 21 1 2 4 3 40 1 4 41 60 61 80 4 8 5 RL37 RL39 RL44 RL43 RL42 CL15 RL40 XL01 QL13 RL29 RL31 RL32 RL33 RL05 JL03 QL11 QL12 QL08 RL23 QL07 RL01 RL...
Страница 39: ... LTD All rights reserved No portion of this manual may be reproduced with the permission of VERTEX STANDARD CO LTD printed in Japan 457X855010 2001 06 Marine Division of VERTEX STANDARD US Hedqurters 1720 Edwards Rd Cerritos CA 90703 U S A ...