Adjustment Procedures; Preparation - Icom IC-M401EURO Service Manual

SECTION 5 ADJUSTMENT PROCEDURES

5-1 PREPARATION

REQUIRED TEST EQUIPMENT
EQUIPMENT
Output voltage
DC power supply
Current capacity
Measuring range
RF power meter Frequency range
(terminated type) Impedance
SWR
Frequency range
Frequency counter Frequency accuracy : ±1 ppm or better
Sensitivity
Frequency range
FM deviation meter
Measuring range
DC voltmeter Input impedance
Digital multi-meter Input impedance
Distortion meter Frequency range
Measuring range
' ' CONNECTIONS
Standard signal
generator
17 to 125 dBm
(32 mV to 0.13 V)
RF power meter
50
FM deviation
Attenuator
40 dB or 50 dB
to the antenna connector
GRADE AND RANGE
: 13.8 V DC
: 10 A or more
: 1–50 W
: 100–300 MHz
: 50 Ω
: Less than 1.2 : 1
: 0.1–300 MHz
: 100 mV or better
: 30–300 MHz
: 0 to ±10 kHz
: 50 kΩ/V DC or better
: 10 MΩ/V DC or better
: 1 kHz ±10 %
: 1–100 %
/ 1 50 W
Frequency
counter
meter
EQUIPMENT
Audio generator
Standard signal
generator (SSG)
Oscilloscope
AC millivoltmeter
External speaker
Attenuator
Dummy load
CAUTION:
DO NOT transmit while SSG is
connected to the antenna connector.
to EXT Speaker jack
to DC cable
Black cap
(EXT SP jack)
Red line
Black line
5 - 1
GRADE AND RANGE
Frequency range : 300–3000 Hz
Measuring range : 1–500 mV
Frequency range : 0.1–300 MHz
Output level : 0.1 µV–32 mV
(–127 to –17 dBm)
Frequency range : DC–20 MHz
Measuring range : 0.01–20 V
Measuring range : 10 mV–10 V
: 4 Ω
Input impedance
Capacity : 5 W or more
Power attenuation : 40 or 50 dB
Capacity : 50 W or more
: 50 Ω
Resistance
Capacity : 100 W or more
Distortion meter
Speaker
+
DC power supply
13.8 V /15 A