![background image](http://html.mh-extra.com/html/icom/ic-m402/ic-m402_service-manual_612789015.webp)
5 - 2
5-2 PLL ADJUSTMENTS
LOCK
VOLTAGE
REFERENCE
FREQUENCY
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1
2
1
• Operating channel : ch16
• Receiving
• Operating channel : ch16
• Output power
: Low
• Transmitting
• Operating channel : ch16
• Output power
: Low
• Connect an RF power meter or a
50
Ω
dummy load to the antenna
connector.
• Transmitting
MAIN
Rear
Panel
Connect a digital
multi-meter or oscil-
loscope to the
check point CP1.
Loosely couple the
frequency counter
to the antenna con-
nector.
1.8 V
1.6 V
156.8000 MHz
MAIN
Verify
C36
C36
Reference frequency
adjustment
CP1
PLL lock voltage
check point
Содержание IC-M402
Страница 1: ...SERVICE MANUAL VHF MARINE TRANSCEIVER ...
Страница 31: ...9 3 BOTTOM VIEW DS1 DS3 DS4 DS5 DS6 DS7 DS8 ...
Страница 34: ...9 6 HM 127 OPTIONAL UNIT TOP VIEW 9 6 ...
Страница 41: ......
Страница 42: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13716IZ CD 2001 Icom Inc ...