Icom IC-7700 Service Manual page 30

4-7-3 REFERENCE FREQUENCY
ADJUSTMENT ADJUSTMENT CONDITION
REFERENCE 1 • Wait more than 5 min. from
FREQUENCY turning main power ON with
[I/O] on the rear panel, then
adjust the reference frequency.
4-7-4 OTHER ADJUSTMENTS
ADJUSTMENT ADJUSTMENT CONDITION
PRESET 1
EXT. METER
PRESET 1
DIGISEL VR
1) Connect a Frequency Counter to
the [REF I/O] connector.
2) Adjust the reference frequency
using [MAIN DIAL].
1) Connect a Voltage meter to the
[METER] terminal.
– 2) Adjust the voltage using [MAIN
DIAL].
3) Push [F-7] key.
1) Set the [DIGI-SEL] (on the front
panel) to center.
–
2) Push [F-7] key.
4 - 18
OPERATION
OPERATION
ADJUSTMENT
VALUE
ITEM
10.0000000
[REF]
MHz
(±0.1 Hz)
ADJUSTMENT
VALUE
ITEM
[EXT. METER]
0 V
Center
[DIGISEL VR]
position