5 - 1
SECTION 5. ADJUSTMENT
PROCEDURE
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CONNECTION
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JIG CABLES
EQUIPMENT
GRADE AND RANGE
EQUIPMENT
GRADE AND RANGE
Power supply
Voltage range
: 1–15 V
Current capacity
: More than 3 A
JIG cable
Modifi ed 3-conductor plugs
(See the illustration below)
Audio generator
(AG)
Frequency range
: 300–3000 Hz
Output level
: 1–500 mV
Attenuator
Power attenuation
: 40 dB
Capacity
: More than 6 W
Modulation
Analyzer
Frequency range
: 30–600 MHz
Measuring range
: 0 to ±10 kHz
Standard signal
generator (SSG)
Frequency range
: 0.1–600 MHz
Output level
: –20 dBµ to 90 dBµ
(–127 to –17 dBm)
AC millivoltmeter
Measuring range
: 10 mV to 10 V
Frequency counter
Frequency range
: 0.1–600 MHz
Frequency accuracy : ±1 ppm or better
Input level
: Less than 1 mW
RF power meter
(50
Ω
terminated)
Measuring range
: 0.1–6 W
Frequency range
: 100–600 MHz
SWR
: Less than 1.2 : 1
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REQUIRED EQUIPMENTS
5-1 PREPARATION
To the [DC IN] jack
OPC-254L
:
e
t
i
h
W
:
k
c
a
l
B
DC power supply
13.5 V/3 A
FM
deviation meter
to the antenna connector
Attenuator
40 dB
RF power meter
0.1–6 W/50
Ω
Frequency
counter
Standard signal generator
–20 to 90 dBµ
(–127 dBm to –17 dBm)
DO NOT
transmit while
an SSG is connected to
the antenna connector.
• Adjustment at 5.5 V or 7.4 V
Be sure about the polarity
DC power supply
5.5 V or 7.4 V/3 A
• Adjustment at 13.5 V
POWER SUPPLY CONNECTION
To [SP]
[DC IN]
To [MIC]
JIG cables
SETTING;
Frequency : 1 kHz
Level
: 90 mVrms
Waveform : Sine wave
3-conductor 2.5 (d) mm
• JIG cable #1
• JIG cable #2
plug
(EXTMIC)
(GND)
33 k
+ −
AC
MILLIVOLTMETER
(10 mV to 10 V)
AUDIO GENERATOR
(300–3000 Hz/1–500 mV)
+ −
PTT
+
4.7 µF
3-conductor 3.5 (d) mm plug
(CLONE)
(SP)
(GND)
82 k
Ω
Less than 4.5 (d) mm
Less than 4.5 (d) mm
