5-1
SECTION 5
ADJUSTMENT PROCEDURES
M
CONNECTION
M
JIG CABLE
EQUIPMENT
SPECIFICATIONS
EQUIPMENT
SPECIFICATIONS
JIG cable
Modifi ed modular cable.
(See the illustration shown below.)
Audio generator
(AG)
Frequency range:
300–3000 Hz
Output level:
1–500 mV
DC power supply
Voltage:
13.8 V
Capacity:
More than 15 A
AC millivoltmeter
Measuring range:
10 mV to 10 V
RF power meter
(50
terminated)
Measuring range:
0.1–60 W
Frequency range:
100–600 MHz
SWR:
Less than 1.2: 1
Frequency counter
Range:
0.1–600 MHz
Accuracy:
±1 ppm or better
Input level:
Less than 1 mW
Modulation
analyzer
Frequency range:
DC–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 dBm to –17 dBm)
AC millivoltmeter
Measuring range:
10 mV to 10 V
Attenuator
Attenuation: 40
dB
Capacity:
More than 60 W
M
REQUIRED EQUIPMENT
5-1 PREPARATION
The tests described in this section should be measured and adjusted with the above test equipment.
However, a radio tester can also be used for these adjustment procedures.
Modulation
analyzer
60 W
Loose
coupling
(Rear view)
to the antenna connector
Attenuator
40 dB
RF power meter
Frequency
counter
Standard signal generator
–20 dBµ to 90 dBµ
(–127 dBm to –17 dBm)
DO NOT
transmit while
an SSG is connected to
the antenna connector.
5
2
7
4
7
6
1
2
3
4
5
6
7
8
MIC JACK
Front panel view
(MIC)
(MICU/D)
(GND)
(PTT)
(GND)
(MICE)
AUDIO GENERATOR
JIG CABLE
(300–3000 Hz/1–500 mV)
+ −
22 k
Ω
+ −
AC MILLIVOLTMETER
(10 mV to 10 V)
PTT