5 - 2
FM
deviation meter
SINAD meter
Speaker (8
Ω
)
to the antenna connector
Attenuator
30 dB
RF power meter
0.1–10 W/50
Ω
Frequency
counter
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.
To [SP]
To [MIC]
JIG cables
To [SP] connector
PC
to USB port
to USB port
to RS-232C port
OPC-478
(RS-232C type)
OPC-478U
(USB type)
OPC-478UC
(USB type)
• CONNECTION
• JIG CABLES
2-conductor 2.5 (d) mm plug
(MIC)
(GND)
33 k
3-conductor 3.5(d) mm plug
(CLONE)
OPC-478/U/UC
(GND)
(SP)
[JIG cable1]
[JIG cable2]
+ −
AC
MILLIVOLTMETER
(10 mV to 10 V)
AUDIO GENERATOR
(300–3000 Hz/1–500 mV)
+ −
PTT
+
4.7 µF
EXT. SPEAKER
(1 W/8
Ω)
+
−
SETTING;
Frequency
: 1 kHz
Level
: 150 mV rms
Waveform : Sine wave
