NX-720H(G)/720H
53
ADJUSTMENT
Receiver Section
Item
Panel test mode
PC test mode
Measurement
Adjustment
Specifi cations/
Remarks
Test-
equip-
ment
Unit
Terminal
Unit
Parts
Method
1.AF level setting
[Panel test mode]
1) CH-Sig: 1-1
SSG output:
–47dBm (1mV)
(MOD:
1kHz/±1.5kHz)
Wide 5k/Narrow:
Narrow
Beat Shift:
Uncheck
Compander:
Uncheck
1) Test Channel
Channel: 1
Test Signaling
Mode: Analog
Signaling: 1
Wide 5k/Narrow:
Narrow
Beat Shift:
Uncheck
Compander:
Uncheck
SSG output:
–47dBm
(1mV) (MOD:
1kHz/±1.5kHz)
SSG
DVM
AF VTVM
4ohm
Dummy
load
ANT
Ext.SP
connector
[Panel
tuning
mode]
[
],[
]
[PC test
mode]
[
],[
]
Volume Up/Down
Knob to obtain
2.83V AF output.
(2.0W @ 4ohm
load)
2.83V±0.3V
( Volume Button
in PC test mode
screen)
2. Sensitivity 1
adjust
This adjustment can
be performed only
PC test mode.
1) Adj item:
[Sensitivity 1]
2) Adj item: [Low],
[Low’], [Center],
[High’], [High]
Press [Apply All]
button to store
the adjustment
value.
SSG
AF VTVM
4ohm
Dummy
load
ANT
Ext.SP
connector
[PC test
mode]
[
],[
]
Write the value as
VHF
[L SENS1] / [Low]: 61
(Preset)
[L’ SENS1] / [Low’]: 85
(Preset)
[C SENS1] / [Center]:
103 (Preset)
[H’ SENS1] / [High’]: 122
(Preset)
[H SENS1] / [High]: 152
(Preset)
VHF
Increase the
adjustment value
from the preset value
to get 12dB SINAD.
SSG output :
-119dBm(0.25uV)
(Mod : 1kHz
/±1.5kHz)
Note:
The preset value of
Sensitivity 2 must
be written before
adjusting Sensitivity 1.
3. ensitivity2 adjust
This adjustment can
be performed only
PC test mode.
1) Adj item:
[Sensitivity 2]
2) Adj item: [Low],
[Low’], [Center],
[High’], [High]
Press [Apply All]
button to store
the adjustment
value.
SSG
AF VTVM
4ohm
Dummy
load
ANT
Ext.SP
connector
[PC test
mode]
[
],[
]
Write the value as
VHF
[L SENS2] / [Low] :
48 (Fixed)
[L’ SENS2] / [Low’] :
75 (Fixed)
[C SENS2] / [Center]
: 104(Fixed)
[H’ SENS2] / [High’] :
132(Fixed)
[H SENS2] / [High] :
187(Fixed)
4. RSSI reference
adjust
1) Adj item:
[RRSS]
Adjust:[
]
2) Adj item:
[R.RSS]
[R.R.SS]
[R.R.S.S]
[R.R.S.S.
[R.R.S.S._.]
SSG output:12dB
SINAD level -3dB
(MOD:1kHz/±1.5kHz)
1) Adj item:
[RSSI Reference
(Analog Narrow)]
2) Adj item: [Low],
[Low’], [Center],
[High’], [High]
SSG output:
12dB
SINAD level
–3dB
(MOD:
1kHz/±1.5kHz)
SSG
Distor-
tion
meter
Oscillo-
scope
ANT
Ext.SP
connector
[PC test
mode]
[
],[
]
[Panel tuning
mode]
After input signal
from SSG, press
[<B] key to store
the adjustment
value.
[PC test mode]
After input signal
from SSG, press
[Apply] button to
store the adjust-
ment value.
Note:
Wide, very narrow
(NVDN) values are
same value as nar-
row.
Summary of Contents for Nexedge NX-720H
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