Kenwood NX-720H(G) Service Manual page 53

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