Section 4 Adjustment Procedures; Preparation - Icom IC-R75 Service Manual

SECTION 4 ADJUSTMENT PROCEDURES

4-1 PREPARATION

' ' REQUIRED TEST EQUIPMENT
EQUIPMENT
Output voltage
DC power supply
Current capacity
Frequency range
Frequency counter Frequency accuracy : ±1 ppm or better
Sensitivity
Frequency range
Audio generator
Measuring range
DC Voltmeter Input impedance
' ' CONNECTION
NOTE:
The [450 Ω] ANT jack is not
used for adjustment
Standard Signal
Generator
DC power supply
13.8 V / 10A
DC
IN
GRADE AND RANGE
: 13.8 V DC
: 2 A or more
: 0.1–60 MHz
: 100 mV or better
: 0.1–60 Hz
: 0.01–10 mV
: 50 kΩ/V DC or better
50 Ω
450 Ω
EXT
ANT SP
ANT
EQUIPMENT
Frequency range
Oscilloscope
Measuring range
AC millivoltmeter Measuring range
Input impedance
External speaker
Capacity
Frequency range
Standard signal
Output level
generator (SSG)
AC
milli-voltmeter
Terminator for the entering
adjustment mode
Speaker
REMOTE
connector
4 - 1
GRADE AND RANGE
: DC–20 MHz
: 0.01–20 V
: 10 mV–10 V
: 8 Ω
: 4 W or more
: 0.1–300 MHz
: 0.1 µV–32 mV
(–127 to –17 dBm)
1/8" (3.5 mm)
2-conductor plug
Shorten inner and outer plugs