Adjustment Procedure; Preparation - Icom IC-M220 Service Manual

SECTION 4

4-1 PREPARATION

■ REQUIRED EQUIPMENT
EQUIPMENT
Programming CS-M220 PROGRAMMING
software SOFTWARE (Revision 1.00 or later)
Programming
OPC-478UC
cable
Measuring range: 0.1 ~ 30 W
RF power meter
Frequency range: 100 ~ 300 MHz
(50 Ω terminated)
SWR:
AC millivoltmeter Measuring range: 10 mV to 10 V
Modulation Frequency range: 30 ~ 300 MHz
analyzer Measuring range: 0 to ±10 kHz
Frequency range: DC ~ 20 MHz
Oscilloscope
Measuring range: 0.01 ~ 20 V
Audio generator Frequency range: 300 ~ 3000 Hz
(AG) Output level:
Spectrum analyzer Measuring range: Up to 3 GHz
Bit error meter Input level:
■ CONNECTION
OPC- 478UC
Transceiver
JIG cable
BIT ERROR METER
(0.1 ~ 2.0 Vp-p)
DATA
CLOCK
+ −
NMEA out leads
White: NMEAO+
DC power supply
13.8 V/10 A
CAUTION!
NEVER transmit while the SSG is
connected to the antenna connector.
Standard signal generator
–20 to 90 dBµ
CLOCK
(–127 to –17 dBm)

ADJUSTMENT PROCEDURE

GRADE AND RANGE
Less than 1.2 : 1
1 ~ 500 mV
0.1 ~ 2.0 Vp-p
Brown: NMEAO− Blue: SP+
Black: SP−
Transceiver
–
+
EQUIPMENT
JIG cable
Standard signal
generator (SSG)
★ With the pseudo
random code sending
function or the pulse
duty setting function.
Frequency counter
Attenuator
External speaker
Distortion meter
to USB port
DISTORTION METER
(3% or less at 1 kHz/50 mV ~ 10 V)
AF out leads
Frequency
counter
RF power meter
0.1 ~ 30 W/50 Ω
Loose couple
Attenuator
40 dB
4-1
GRADE AND RANGE
Modified OPC-2132
(See the illustration shown on page 4-2.)
Frequency range: 0.1~300 MHz
Output level: –20 dBµ to 90 dBµ
(–127 to –17 dBm)
Frequency range: 0.1 ~ 300 MHz
Frequency accuracy: ±1 ppm or better
Power attenuation: 40 dB
Capacity: More than 30 W
Input impedance: 4 Ω
Capacity: More than 10 W
Measuring accuracy: 3% or less at 1 kHz
Input level: 50 mV to 20 V
PC
+ −
+
−
EXTERNAL SPEAKER
(10 W/4 Ω)
Modulation analyzer
30 ~ 300 MHz/0 to ±10 kHz
Spectrum analyzer
Up to 3 GHz