44
GEX-FM903XM
-
Adjustment
Note: When ajusting, the frequency is made 89.1MHz.
Input Signal
Adjusting Point
Adjustment Method
Notes
Tuning Voltage
-
∞
L505
DC V Meter:TV1
Adjustment
3.0V±0.1V
Balance Adjustment
-
∞
VR502
Oscilloscope:BAL
38kHz signal becomes minimum
Modulation
400Hz 0dB
VR503
Linear Detector(Spectrum Analyzer) MOD1 : H
Adjustment
129±5kHz
MOD2 : H
MOD3 : H
6. ADJUSTMENT
6.1 MODULATOR ADJUSTMENT
-
Connection Diagram
L505
VR502
VR503
Antenna
Plug
ANTENNA
SELECT
UNIT
ANTENNA OUT
Antenna
Jack
(Spectrum Analyzer)
FM Tuner
Linear Detector
CN501
CN401
CN801
CN802
CN402
S601
CN502
IC601
CN503
DC Regulated
Power Supply
BACK UP
ACC
GND
RESET
BAL
TV1
MOD
Oscilloscope
DC V Meter
SIDE A
SIDE B
Summary of Contents for GEX-FM903XM
Page 11: ...11 GEX FM903XM 5 6 7 8 5 6 7 8 D C B A A CN502 B b B ...
Page 12: ...12 GEX FM903XM 1 2 3 4 1 2 3 4 D C B A B RF MODULE B a B a B b 1 2 ...
Page 13: ...13 GEX FM903XM 5 6 7 8 5 6 7 8 D C B A B a B a B b 4 3 ...
Page 14: ...1 2 14 GEX FM903XM 1 2 3 4 1 2 3 4 D C B A B a B b B b ...
Page 15: ...4 3 15 GEX FM903XM 5 6 7 8 5 6 7 8 D C B A A CN502 B b B a B b ...
Page 17: ...17 GEX FM903XM 5 6 7 8 5 6 7 8 D C B A SSDEC DAC SDRAM CAP ST19AF08BR20QMAA C b C ...
Page 18: ...18 GEX FM903XM 1 2 3 4 1 2 3 4 D C B A S C DSP MODULE C a C a C b 1 2 3 ...
Page 19: ...19 GEX FM903XM 5 6 7 8 5 6 7 8 D C B A CDEC A CN503 C a 4 C a C b ...
Page 20: ...1 2 3 20 GEX FM903XM 1 2 3 4 1 2 3 4 D C B A DAC SDRAM CAP ST19AF08BR20QMAA C a C b C b ...
Page 21: ...4 21 GEX FM903XM 5 6 7 8 5 6 7 8 D C B A SSDEC ST19AF08BR20QMAA C b C a C b ...
Page 23: ...23 GEX FM903XM 5 6 7 8 5 6 7 8 D C B A D A CN802 ...
Page 25: ...25 GEX FM903XM ...
Page 27: ...27 GEX FM903XM IP BUS IP BUS CORD D CN901 E CN501 C CN201 5 6 7 8 A B C D 5 6 7 8 A SIDE A ...
Page 28: ...28 GEX FM903XM A MAIN UNIT A 1 2 3 4 B C D 1 2 3 4 A ...
Page 29: ...29 GEX FM903XM 5 6 7 8 A B C D 5 6 7 8 SIDE B A ...
Page 30: ...30 GEX FM903XM A 1 2 3 4 B C D 1 2 3 4 IC Q B RF MODULE XM ANTENNA 4 2 RF MODULE SIDE A B ...
Page 31: ...31 GEX FM903XM 1 2 3 4 A B C D 1 2 3 4 IC Q A CN502 B RF MODULE SIDE B B ...
Page 32: ...IC Q C DSP MODULE 32 GEX FM903XM A 1 2 3 4 B C D 1 2 3 4 C 4 3 DSP MODULE SIDE A ...
Page 33: ...IC Q A CN503 C DSP MODULE 33 GEX FM903XM 1 2 3 4 A B C D 1 2 3 4 C SIDE B ...