Icom IC-A25N Service Manual page 3

March 2019
SECTION 4
The underlined parts have been updated from the previous version of the addendum, or the original page.
4-1 PREPARATION
■ REQUIRED EQUIPMENT
EQUIPMENT
Output voltage:
DC power supply
Current capacity:
Battery pack BP-288 (Fully charged)
Measuring range:
RF power meter
Frequency range:
(50 Ω terminated)
SWR:
Frequency range:
Frequency counter
Frequency accuracy: ±1 ppm or better
Frequency range:
Modulation Analyzer
Measuring range:
Power attenuation:
Attenuator
Capacity:
■ JIG CABLE
3-conductor 2.5 mm (d) mm plug
(MIC)
■ CONNECTIONS
Standard signal generator
−20 dBμ to 90 dBμ
(−127 dBm to −17 dBm)
VOR Tester
CAUTION!
DO NOT transmit while the SSG
or VOR tester is connected to the
antenna connector.
Used DC power plug
(for power supply connection)
Ø1.35
9.5
(Replacement page)
ADJUSTMENT PROCEDURE
SPECIFICATIONS
11 V
5 A or more
0.1~5 W
100~300 MHz
Less than 1.2 : 1
0.1~300 MHz
30~300 MHz
0~100%
30~40 dB
More than 10 W
(GND)
PTT
33 kΩ
(PTT)
+
4.7 µF
(Unit: mm)
EQUIPMENT
Programming software
Programming cable
Standard signal
generator (SSG)
Audio generator (AG)
JIG cable
AC millivoltmeter
VOR tester
AUDIO GENERATOR
(300~3000 Hz/1~500 mV)
SETTING:
Frequency: 1 kHz
Level:
+ −
Waveform: Sine wave
Attenuator
30~40 dB
Loose
coupling
To [MIC]
Battery pack
(Fully charged BP-288)
To [DC 11V]
4-1a
SPECIFICATIONS
CS-A25 Programming software
(Revision 1.0 or later)
OPC-478UC
Frequency range: 0.1~300 MHz
Output level: −20 dBμ to 90 dBμ
(−127 to −17 dBm)
Frequency range: 300~3000 Hz
Output level: 1~500 mV
See the illustration below.
Measuring range: 10 mV to 10 V
Frequency range: 108~118 MHz
Output level: −20 dBμ to 90 dBμ
(−127 to −17 dBm)
AC MILLIVOLTMETER
(10 mV to 10 V)
200/20 mV
Frequency counter
Modulation Analyzer
0~100%
RF power meter
0.1~5 W
Audio generator
300~3000 Hz/1~500 mV
AC millivoltmeter
10 mV to 10 V
DC power supply
11 V/5 A or more
+ −