IC-910H Service manual - n7tgb

5-6 SOFTWARE ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION
ENTERING
SOFTWARE
ADJUSTMENT
1
• Enter software adjustment mode:
1 Turn power OFF.
2 Terminate the [REMOTE] jack with a
3.5(d) mm mini-plug.
3 While pushing [RIT] and [SATELLITE]
keys, turn power ON.
The display shows the selection
item scleen for the adjustment
mode, push [0]–[9] key to select
adjustment item. Once enterring
adjustment mode, use [UP]/[DOWN]
key to skip/back items, or [ENT] to
return the selection item screen.
CAUTION:
NEVER select ajustment items [6]–[9] key on the selection item screen while transceiver is connected to an SSG.
Because transceiver automatically transmits when transmit items [6]–[9] is selected.
ADJUSTMENT
ITEM (0)
VOLUME
CENTER
1
• Push [0] to enter the volume center setting.
• Set the [RIT] and [SHIFT] controls to center.
Push [RIT] key to set the volume
center positions, and to step next.
PLL UNLOCK
1
• Wait for a while.
USB
Verify the unlock detection for VHF
by blinking the frequency on the display,
then push [RIT] key to step
next.
2
USB
Verify the unlock detection for UHF
by blinking the frequency on the display,
then push [RIT] key to exit volume
center setting to selection item
screen.
ADJUSTMENT
ITEM (1)
TUNED BPF
(for 144 M)
1
• Push [1] to enter the receiver adjustment.
• Connect a standard signal generator to
[VHF ANT] connector and set as:
Frequency : 136.02150 MHz
Level : 50 µV* (–73 dBm)
Modulation : OFF
• Receiving
USB
Push [RIT] key to tune the “144 tune
1”, and to step next.
2
• Set an SSG as :
Frequency : 146.02150 MHz
Level : 50 µV* (–73 dBm)
• Receiving
USB
Push [RIT] key to tune the “144 tune
2”, and to step next.
3
• Set an SSG as :
Frequency : 146.02150 MHz
Level : 50 µV* (–73 dBm)
• Receiving
USB
Push [RIT] key to tune the “144 tune
3”, and to step next.
(for 430 M)
4
• Set an SSG as :
Frequency : 420.02150 MHz
Level : 50 µV* (–73 dBm)
• Receiving
USB
Push [RIT] key to tune the “430 tune
1”, and to step next.
5
• Connect an SSG to [UHF ANT] connector
and set as :
Frequency : 440.02150 MHz
Level : 50 µV (–73 dBm)
• Receiving
USB
Push [RIT] key to tune the “430 tune
2”, and to step next.
6
• Set an SSG as :
Frequency : 479.98150 MHz
Level : 50 µV* (–73 dBm)
• Receiving
USB
Push [RIT] key to tune the “430 tune
3”.
Turn power OFF and ON to return
the normal operation mode. Then
start the receiver adjustments (page
5-3).
*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.
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