Icom iC-m34 Service Manual page 13

• CONNECTION
OPC-478 (RS-232C type)
OPC-478U (USB type)
OPC-478UC (USB type)
SINAD meter
Speaker (8 Ω)
• JIG cable
OPC-478/U/UC
to RS-232C po r t
to USB po r t
To CLONE line
(BLUE)
To SP line
JIG cable
(RED)
To [SP MIC] connector
To SINAD meter/speaker
(CLONE line)
PC
IC-M34
To audio generator/AC millivoltmeter
Ω
33 k PTT
WHITE (MIC)
(MIC line)
RED (AFOUT)
(SP line)
BLUE (CLONE)
SHIELD (GND)
5 - 2
AC millivoltmeter
Audio generator
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.
Attenuator
FM
30 dB
deviation meter
RF power meter
0.1–10 W/50 Ω
Frequency
counter
OPC-1668
To the transceiver
(Parts No.: 8900016260)