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NXR-700H
Item
Condition
15. High
1) Center
Transmit
Power
(Pre ADJ)
16. Coupler
1) Center
ADJ
17. High
1) Center
Transmit
Power
(Max power
limit ADJ)
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
Modulation pattern
: 100Hz square signal
(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.)
1) A: Low
2) A: Center
3) A: High
4) B: Low
5) B: Center
6) B: High
Exit "Deviation" screen to "Test
Mode" screen, then set test
signaling mode to be "NXDN"
and signaling number to be "3".
Set Wide/Narrow drop down
list to be "Narrow". Set test
channel to be "1".
Deviation meter setting
HPF: OFF
LPF: 15kHz
De-emp: OFF
Detector: +peak, –peak
Push "Transmit" button, then
measure the deviation.
118
ADJUSTMENT
Measurement
Test-
Unit
Terminal
Unit
equipment
Power meter
Rear
TX ANT
PC
Final
DVM
Final
REF
Final
Power meter
Power meter
Rear
TX ANT
PC
Final
Power meter
Rear
TX ANT
Ammeter
Deviation
Rear
TX ANT
meter
Oscilloscope
PC
Adjustment
Parts
Method
PC
Value: 1024
Fixed value writing
ADJ
VR2
25W
±0.5W
VR1
Adjust to the mini-
mum value.
PC
Value: 1024
Fixed value writing
ADJ
VR2
30.0W
±1.0W
PC
25.0W
±0.5W
ADJ
10.0A or less
5.0W
±0.1W
5.5A or less
PC
±1.10kHz
±0.05kHz
ADJ
Adjust it into clean
Connect the deviation meter
square wave with
to the TX ANT end via the
changing "Sub-
ATT.
audible Gain" and
"Audible Gain".
Check
±3.06kHz±0.20kHz
Clean sine wave.
Specifi cations / Remarks
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