Icom IC-R75, Руководство по обслуживанию

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