Transmitter Section - Kenwood NXR-1800 Service Manual

Item PC tuning mode
7. RD 1) Test Channel: Channel 1
Level
(Analog 2) Adj item:
Narrow) [RD Level (Analog Narrow)]
SSG output: -53dBm (501uV)
(MOD: 1kHz/±1.5kHz)
Audio load:100k
8. RA 1) Test Channel: Channel 1
Level
(Analog 2) Adj item:
Narrow) [RA Level (Analog Narrow)]
SSG output: -53dBm (501uV)
(MOD: 1kHz/±1.5kHz)
Audio load:100k
4.6

Transmitter Section

Item PC tuning mode
1.High 1) Adj item:
Transmit [High Transmit Power Limit]
Power
Limit 2) Adj item:
[L1],[L5],[C3], [H2], [H6]
Measurement
Test- Termi
Unit
equipment nal
SSG RX
Audio ANT
Analyzer
Oscilloscope RD
(D-
SUB25
Pin
No.10)
SSG RX
Audio ANT
Analyzer
Oscilloscope RA
(D-
SUB25
Pin
No.11)
Measurement
Test- Termi
Unit
equipment nal
Power TX
meter ANT
Ammeter
Adjustment
Unit Parts Method
PC Change the adjustment
ADJ value to become
80mVrms within the
specified range.
PC Change the adjustment
ADJ value to become
400mVrms within the
specified range.
Adjustment
Unit Parts Method
PC Write Fixed value for
ADJ each adjustment point as
follows.
Fixed Value: 120
Specifications/
Remarks
80mVrms±5mV
Press [Apply] button to
store the adjustment
value after adjustment
point was adjusted.
Caution:
This model doesn't
have the speaker
output.
Note:
This adjusts the level
of the RX Data Output
at D-SUB 25-pin.
400mVrms±20mV
Press [Apply] button to
store the adjustment
value after adjustment
point was adjusted.
Caution:
This model doesn't
have the speaker
output.
Note:
This adjusts the level
of the RX Audio output
at D-SUB 25-pin.
Specifications/
Remarks
No Specification.
This adj. uses the
fixed values and it
does not support the
individual/fine tune
adjustment. No need
to measure the
transmit power itself.
Press [Apply All]
button to store the
adjustment values
after all adjustment
points have been
adjusted.
(No.RA094<Rev.002>)1-59