Icom IC-M412 Service Manual page 17

SECTION 5
5-1 PREPARATION
¤ REQUIRED INSTRUMENTS
INSTRUMENT
Output voltage
Power Supply
Current capacity
Measuring range
Frequency range
RF Power Meter
(terminated type)
Impedance
SWR
Frequency range
Frequency Counter Frequency accuracy : ±1 ppm or better
Input level
Modulation Frequency range
Analyzer
Measuring range
Frequency range
Audio Generator
Output level
¤ CONNECTION
Standard signal generator (SSG)
SETTING;
• Frequency : 156.800 MHz
• Modulation : 1 kHz
• Deviation : ±3 kHz
• Level : +10 dBµ (−97 dBm)
RF power meter
1–30 W
Modulation
analyzer
Attenuator
30 dB
To the antenna connector
ADJUSTMENT PROCEDURE
SPECIFICATION
: 13.8 V DC
: More than 10 A
: 0.1–30 W
: 100–300 MHz
: 50 Ω
: Less than 1.2 : 1
: 0.1–300 MHz
: Less than 1 mW
: 30–300 MHz
: 0 to ±10 kHz
: 300–3000 Hz
: 1–500 mV
Frequency
counter
Yellow line "AFO"
INSTRUMENT
Digital Voltmeter
Standard Signal
Generator (SSG)
AC Millivoltmeter
External Speaker
Attenuator
CAUTION:
DO NOT transmit while SSG is
connected to the antenna connector.
To the external speaker lead
To DC cable
Black line "−"
5 - 1
SPECIFICATION
Input impedance : More than 50 kΩ
Measuring range : 0.1–10V
Frequency range : 0.1–300 MHz
Output level : 0.1 mV to 32 mV
(–127 to –17 dBm)
Measuring range : 10 mV to 10 V
: 4 Ω
Input impedance
Capacity : More than 3 W
Power attenuation : 30 dB
Capacity : More than 30 W
Speaker (4 Ω)
–
DC power supply
+
13.8 V /10 A or more
Red line "+"