Kenwood NXR-700 Service Manual page 54

NXR-700
Item Condition
18. High Frequency
Transmit 1) Low
Power 2) Center
3) High
Attach the EXCITER/FINAL
shield cover.
19. Low Frequency
Transmit 1) Low
Power 2) Center
3) High
Attach the EXCITER/FINAL
shield cover.
20. Deviation Mode: NXDN
Wide/Narrow: Very Narrow
(The transmis- Connect the deviation meter to
sion VCO band the TX ANT end via the ATT.
is separated Deviation meter setting
into A and B. HPF: OFF
3-points for LPF: 15kHz
each, i.e., total De-emp: OFF
of 6-points shall Detector: (p-p)/2
be adjusted.) Modulation pattern
: 100Hz square signal
1) A: Low
2) A: Center
3) A: High
4) B: Low
5) B: Center
6) B: High
Mode: NXDN
Wide/Narrow: Narrow
Connect the deviation meter to
the TX ANT end via the ATT.
Deviation meter setting
HPF: OFF
LPF: 15kHz
De-emp: OFF
Detector: +peak, –peak
Modulation pattern
: Max deviation pattern
1) A (Low)
21. Maximum 1) Channel: 3 (Center)
Deviation Wide/Narrow: Analog Wide
(Analog) Connect the deviation meter
to the TX ANT end via the ATT.
Deviation meter setting
HPF: OFF
LPF: 15kHz
De-emp: OFF
Detector: +peak, –peak
AG setting: 1kHz/45mVrms
(Sine wave, Terminal load)
2) Channel: 3 (Center)
Wide/Narrow: Analog Narrow
Connect the deviation meter
to the TX ANT end via the ATT.
AG setting: 1kHz/55mVrms
(Sine wave, Terminal load)
54
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Power meter Rear TX ANT
Ammeter
Deviation Rear TX ANT
meter
Oscilloscope
PC
Deviation Rear TX ANT
meter Front MIC
AG
DVM
Adjustment
Parts Method
PC 5.0W ±0.1W
ADJ 4.4A or less
0.50W ±0.01W
3.3A or less
PC ±1.10kHz ±0.05kHz
ADJ Adjust it into clean
square wave with Connect the deviation meter
changing "Sub- to the TX ANT end via the
audible Gain" and ATT.
"Audible Gain".
Check ±3.06kHz±0.10kHz
Clean sine wave.
PC ±4.1kHz ±0.2kHz
ADJ
Connect the deviation meter
to the TX ANT end via the
ATT.
±1.7kHz ±0.1kHz
Specifi cations / Remarks