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Kenwood Manuals
Transceiver
NEXEDGE NX-800H
Service manual
Kenwood NX-800H Service Manual page 36
Uhf digital transceiver
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Also See for NX-800H
:
Service manual
(109 pages)
,
Function reference
(608 pages)
,
Instruction manual
(116 pages)
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Contents
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NX-800H
Receiver Section
Item
Panel tuning mode
1. AF level
[Panel test mode]
setting
1) CH-Sig: 1-1
SSG output:
–47dBm (1mV)
(MOD: 1kHz,
Dev: ±1.5kHz)
2. Sensitivity 1
1) Adj item: [SENS1]
Adjust
Adjust: [✳✳✳]
(BPF adjust)
2) Adj item:
[L SENS1]→
[L' SENS1]→
[C SENS1]→
[H' SENS1]→
[H SENS1]
Adjust: [✳✳✳]
Press [ ] key to store
the adjustment value.
3. Sensitivity 2
1) Adj item: [SENS2]
Adjust
Adjust: [✳✳✳]
(BPF adjust)
2) Adj item:
[L SENS2]→
[L' SENS2]→
[C SENS2]→
[H' SENS2]→
[H SENS2]
Adjust: [✳✳✳]
Press [ ] key to store
the adjustment value.
4. RSSI
1) Adj item: [An RRSSI]
reference
Adjust: [✳✳✳]
adjust *5
2) Adj item:
[AnL RRSSI]→
[Analog
[AnL' RRSSI]→
Narrow]
[AnC RRSSI]→
[AnH' RRSSI]→
[AnH RRSSI]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz,
Dev: ±1.5kHz)
[Analog
1) Adj item: [Aw RRSSI]
Wide]
Adjust: [✳✳✳]
2) Adj item:
[AwL RRSSI]→
[AwL' RRSSI]→
[AwC RRSSI]→
[AwH' RRSSI]→
[AwH RRSSI]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz,
Dev: ±3kHz)
36
ADJUSTMENT
Condition
PC test mode
equipment
1) Test Channel
SSG
Channel: 1
DVM
Test Signaling
AF VTVM
Mode: Analog
Dummy
Signaling: 1
load (4Ω)
SSG output:
–47dBm (1mV)
(MOD: 1kHz,
Dev: ±1.5kHz)
1) Adj item:
[Sensitivity 1]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
Press [Apply All]
button to store the
adjustment value.
1) Adj item:
[Sensitivity 2]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
Press [Apply All]
button to store the
adjustment value.
1) Adj item: [RSSI
SSG
Reference (Narrow)]
AF VTVM
2) Adj item: [Low],
Oscilloscope
[Low'], [Center],
Distortion
[High'], [High]
meter
SSG output: 12dB
Dummy
SINAD level –3dB
load
(MOD: 1kHz,
Dev: ±1.5kHz)
1) Adj item: [RSSI
Reference (Wide)]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz,
Dev: ±3kHz)
Measurement
Test-
Unit Terminal Unit
ANT
Ext.SP
connec-
tor
Adjustment
Specifi cations /
Parts
Method
[Panel
Volume Up/Down
2.83V±0.3V
tuning
knob to obtain
mode]
2.83V AF output.
[ ],[ ]
(2.0W @ 4Ω load)
[PC test
mode]
[ ],[ ]
(Volume
Button in
PC test
mode
screen)
[Panel
Write the value as fol-
Variable-Capacitor
lowings (typical value)
tuning
Tune voltage is
[L SENS1] / [Low]
mode]
adjusted.
: 72
[ ],[ ]
(Output voltage ad-
[L' SENS1] / [Low']
justment of IC206)
: 97
[PC test
[C SENS1] / [Center]
mode]
If sensitivity is low,
: 129
[ ],[ ]
fi ne-tune the value.
[H' SENS1] / [High']
: 158
[H SENS1] / [High]
: 184
Write the value as
Variable-Capacitor
followings
Tune voltage is
[L SENS2] / [Low]
adjusted.
: 47
(Output voltage ad-
[L' SENS2] / [Low']
justment of IC205)
: 71
[C SENS2] / [Center]
: 113
[H' SENS2] / [High']
: 150
[H SENS2] / [High]
: 185
[Panel tuning mode]
After input signal
from SSG, press
[ ] key to store the
adjustment value.
[PC test mode]
After input signal
from SSG, press
[Apply] button to
store the adjust-
ment value.
Remarks
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