Icom IC-F4021T Service Manual page 15

• CONNECTION
Standard signal generator
0.1 µV to 32 mV
(–127 dBm to –17 dBm)
CAUTION!
DO NOT transmit while
the SSG is connected to
the antenna connector
• JIG CABLES
[JIG cable 1]
(GND )
JIG cable
2-conductor 2.5 (d) mm plug
(MIC)
[JIG cable 2]
(SP)
3-conductor 3.5(d) mm plug
millivoltmeter
To [MIC] jack
JIG cable 1
IC-F4020 series
PTT
33 kΩ
(to the audio generator " + " )
(GND)
(CLONE)
Attenuator
10 dB or 20 dB
RF power meter
0.1–5 W/50
Frequency
counter
OPC-478 (RS-232C type)
OPC-478U (USB type)
AC
Audio
generator
+
JIG cable 2
To [SP] jack
)
"
(SP + )
)
OPC-478/U
6 - 2
FM
Osciiloscope
deviation meter
to RS-232C port
to USB port
PC
SINAD meter
Speaker (8 )