Frequency Adjustment - Icom IC-M504 Service Manual

5-2 FREQUENCY ADJUSTMENT

ADJUSTMENT
LOCK 1 • Channel
VOLTAGE • Receiving
(Regular receive)
2 • Channel
• Output power : Low
• Transmitting
LOCK 1 • Receiving
VOLTAGE
(DSC receive)
REFERENCE 1 • Channel
FREQUENCY • Output power : Low
• Connect a power meter to the ant-
enna connector.
• Transmitting
• ADJUST AND MEASURE POINTS LOCATION (MAIN UNIT)
ADJUSTMENT
CONDITION
: CH16 (156.800 MHz) MAIN Connect a digital multi-
: CH16 (156.800 MHz)
MAIN Connect a digital multi-
: CH16 (156.800 MHz)
Panel
MEASUREMENT
UNIT LOCATION
meter or oscilloscope to
the check point "CP2".
Connect a digital multi-
meter or oscilloscope to
the check point "CP1".
meter or oscilloscope to
the check point "CP1".
Rear Loosely couple a fre-
quency counter to the
antenna connector.
5 - 2
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
1.3–2.3 V MAIN Verify
1.3–2.3 V Verify
1.3–2.3 V MAIN Verify
156.800 MHz MAIN
±500 Hz
C12