Common Section; Transmitter Section - Kenwood NX-1200 Series Service Manual

4.1.7 Common Section

Item Condition
PC tuning mode
1. Setting 1) BATT terminal voltage:7.5V
2) SSG standard modulation
[Wide] MOD:1kHz/DEV:3kHz
[Narrow] MOD:1kHz/
DEV:1.5kHz
2. Assist 1) Adj item: [Assist Voltage]
Voltage 2) Adj point: 5 points
[Low], [Low'], [Center], [High'],
[High]
Note: Confirm the VCO lock voltage approximately three seconds after the adjustment value is changed.
3. DC Offset <PC test mode>
1) Test Channel: 1
Test Signaling Mode: Analog
Signaling: 1
4. Frequency 1) Adj item: [Frequency]
2) Adj point: 1 point
Transmit power: Low
3) PTT: Press [Transmit] button.

4.1.8 Transmitter Section

Item Condition
PC tuning mode
1. Ramp 1) Adj item: [Ramp Offset]
Offset 2) Adj point: 5 points
[Low], [Low'], [Center], [High'], [High]
3) Press [Transmit] button.
2. High 1) Adj item:
transmit [High Transmit Power]
power 2) Adj point: 5 points
(Battery [Low], [Low'], [Center], [High'], [High]
voltage: 3) Press [Transmit] button.
7.5V)
NX-1200 Series (K) type
Measurement
Point
FPU [Automatic Adjustment]
[<],[>] 1) Press [Tune Assist Voltage] button.
2) Press [OK] button to store the
adjustment value after all
adjustment point have been
adjusted.
3) Verify that the VCO lock voltage is
within the specification.
[Manual Adjustment]
1) [V] indicator on the PC window
shows VCO lock voltage.
Change the adjustment value to get
VCO lock voltage within the
specified voltage.
2) Press [OK] button to store the
adjustment value after all
adjustment point have been
adjusted.
FPU Press [DC Offset] button.
It will pop up a window after
adjustment is completed.
f. counter FPU 155.100000MHz
-ANT [<],[>]
NX-1200 Series (K) type
Measurement
Point
Power meter FPU Write the fixed value "1" for each adjustment points.
-ANT [<],[>]
Press [OK] button to store the adjustment value after
all adjustment points have been adjusted.
Power meter FPU 5.0W
-ANT [<],[>]
Power supply
Ammeter
Adjustment
Method
Adjustment Specifications/Remarks
Method
±0.5W
2.3A or less
Press [OK] button to store
the adjustment value after
all adjustment points have
been adjusted.
(No.RA077<Rev.001>)1-25
Specifications/
Remarks
2.4~2.6V
Press [OK] button
to store the
adjustment value.
155.099970~
155.100030MHz
Press [OK] button
to store the
adjustment value.