Icom IC-F24 Service Manual page 15

(CONNECTION
Standard signal generator
0.1 µV to 32 mV
(–127 dBm to –17 dBm)
DO NOT transmit while
an SSG is connected to
the antenna connector.
FM
Attenuator
deviation meter 20 dB / 30 dB
RF power meter
0.1–10 W/50 Ω
Frequency
counter
(JIG CABLE
To IC-F24/F25/S
[SP] jack
to the antenna connector
IC-F24/F25/S
3-conductor 3.5(d) mm plug
JIG cable
To [MIC]
OPC-478 (RS-232C type)
OPC-478U (USB type)
To [SP]
connector
JIG cable
To [SP]
(see page 5-1)
( SP + )
(SP − )
(GND)
(CLONE)
5 - 3
AC millivoltmeter
Audio generator
to RS-232C port
to USB port
PC
SINAD meter
Speaker (8 Ω)
OPC-478/U