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5 - 3
*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.
5-3 RECEIVER ADJUSTMENTS
SENSITIVITY
(Except
channel 70)
(Channel 70)
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1
2
• Operating channel : ch 16
• Connect a tracking generator’s
output to the antenna connector
and set as:
Level
: 7.1 mV*
(–30 dBm)
• Operating channel : ch 16
• Connect an SSG to the antenna
connector and set as:
Frequency
: 156.800 MHz
Level
: 10 µV*
(–97 dBm)
Modulation
: 1 kHz
Deviation
: ±3.5 kHz
• Set the internal speaker OFF in
the SET mode, and connect a
distortion meter with a 4
Ω
load to
[EXT SP] receptacle.
• Receiving
MAIN
MAIN
Connect a tracking
generator’s input to
the MAIN unit; J3.
Connect a DC volt-
meter to check point
CP3.
Set the flat wave
form as shown below.
Maximum voltage
MAIN
MAIN
L11
L12
L13
L14
L15
L31
L32
L33
L34
155 MHz
165 MHz
Set to flat wave form
Содержание IC-M601
Страница 1: ...VHF MARINE TRANSCEIVER iM601 SERVICE MANUAL ...
Страница 37: ...9 5 LOGIC BOARD TOP VIEW H L CH WX 16 MENU POWER CLR F DISTRESS ENT 0 CE 7 8 9 4 5 6 1 2 3 9 2 ...
Страница 40: ... BOTTOM VIEW MAIN UNIT 8 14 7 1 7 1 8 1 4 8 5 14 9 5 ...
Страница 42: ... BOTTOM VIEW AF UNIT 5 8 4 1 5 8 4 1 GND 4 1 to MAIN unit J5 GND VCC VCC 9 7 ...
Страница 53: ......
Страница 54: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13908HZ C1 C 2002 Icom Inc ...