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5 - 3
to an RS-232C port
Personal
computer
to [MIC]
to [SP]
JIG cable
DB9 female plug
(incl. level converter circuit)
• Connection
to the antenna connector
RF power meter
0.1–10 W/50
Ω
Frequency
counter
Attenuator
40 dB or 50 dB
FM
deviation meter
Standard signal generator
0.1
µ
V to 32 mV
(–127 dBm to –17 dBm)
SINAD meter
Speaker (8
Ω
)
Audio generator
OPC-478
CAUTION:
DO NOT transmit while
an SSG is connected to
the antenna connector.
DC POWER
SUPPLY
GND
¥ DC power cable connections
SOFTWARE ADJUSTMENT
PLL ADJUSTMENT
—
Top view
Soldering
DC cable here
+
—
+
DC POWER
SUPPLY
Battery type detector
Battery type detector
NOTE:
When you adjust the output power (high
power), the battery type detector must be con-
nected to GND (see illustration at above).
Ohterwise the transceiver does not transmit high
power, the output power will be low.
Summary of Contents for IC-F3GS
Page 1: ...SERVICE MANUAL VHF FM TRANSCEIVERS ...
Page 39: ......
Page 40: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13713IZ C1V q 2000 Icom Inc ...
Page 41: ...SERVICE MANUAL UHF FM TRANSCEIVERS ...
Page 82: ......
Page 83: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13713IZ C1U 1 2000 Icom Inc ...