Icom IC-F3GS, Service Manual

Page: 14 / 83

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.