Kenwood NX-203 Service Manual page 49

Vhf digital transceiver
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Item
Panel tuning mode
5. Receive
1) Adj item: [RAST]
Assist
Adjust: [✳✳✳✳]
2) Adj item: [L RAST]
[L ' RAST][C RAST]
[H' RAST][H RAST]
Adjust: [✳✳✳✳]
Press [ ] key to store
the adjustment value.
Transmit
1) Adj item: [TAST]
Assist
Adjust: [✳✳✳✳]
2) Adj item: [L TAST]
 [L ' TAST][C TAST]
 [H' TAST][H TAST]
Adjust: [✳✳✳✳]
PTT : ON (RF power
is not output.)
Press [ ] key to store
the adjustment value.
6. Frequency
* The Frequency
adjust
adjustment can be
performed only in
PC test mode.
ADJUSTMENT
Condition
PC test mode
equipment
1) Adj item:
[Receive Assist]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
Press [Apply All]
button to store the
adjustment value.
1) Adj item:
[Transmit Assist]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
PTT: Press
[Transmit] button.
Press [Apply All]
button to store the
adjustment value.
1) Adj item:
SSG
[Frequency]
SSG output :
–20dBm (22.4mV)
(CW (without
modulation))
Caution:
Perform the frequency
adjustment under the
following conditions.
• Temperature range
of +23˚C to +27˚C
(+73.4˚F to +80.6˚F).
(The temperature
is displayed on the
Frequency adjust-
ment screen of the
KPG-111D/111DN
and the LCD of the
transceiver.)
• Use an accuracy of
0.003ppm for the
SSG. (Use a stan-
dard oscillator if
necessary.)
Measurement
Test-
Unit
Terminal
Unit
Panel
Panel
ANT
NX-203
Adjustment
Specifi cations /
Parts
Method
[Panel
The sub LCD display
2.5V±0.1V
tuning
and [V] indicator
mode]
on the PC window
[PC test mode]
[
],
shows VCO lock
Press [Apply All]
[
]
voltage. Change the
button to store the
adjustment value
adjustment value
[PC test
to get VCO lock
after all adjustment
mode]
voltage within the
point was adjusted.
[ ],[ ]
limit of the speci-
fi ed voltage.
Note:
Confi rm the VCO
lock voltage approxi-
mately 3 seconds
after the adjustment
value is changed.
[Side1] [PC test mode]
[PC test mode]
Press [Start] button
The value of "IF20"
of "Auto Tuning" .
will become around
Press [Apply] but-
"0" after the adjust-
ton to store the
ment was fi nished.
adjustment value
after the automatic
Remark:
adjustment was
"Frequency" is
fi nished.
adjusted under
receiving condition
with SSG.
Remarks
49

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