Kenwood NX-720H(G) Service Manual page 44

NX-720H(G)/720H
Item
Panel test mode
5. Sensitivity 1) CH-Sig: 1-1
check SSG output
Wide 5k:
–117dBm (0.32µV)
(MOD: 1kHz/±3kHz)
Narrow:
–117dBm (0.32µV)
(MOD:1kHz/±1.5kHz)
Common Section
Panel test
Item
mode
1. Setting 1) DC voltage:13.6V
2) SSG standard modulation
[Wide] MOD:1kHz,DEV:3kHz
[Narrow] MOD:1kHz,DEV:1.5kHz
This adjust-
2. Receive
Assist ment can be
performed only
PC test mode.
This adjustment
3.Transmit
Assist can be per-
formed only PC
test mode.
44
ADJUSTMENT
PC test mode
equipment
1) Test Channel SSG
Channel: 1 AF VTVM
Test Signaling Oscilloscope
Mode: Analog Distortion
Signaling: 1 meter
4ohm
SSG output Dummy
Wide 5k: load
–116dBm (0.35µV)
(MOD: 1kHz/±3kHz)
Narrow:
–115dBm (0.40µV)
(MOD:1kHz/±1.5kHz)
Measurement
PC test mode
Test-
equipment
1) Adj item:
[Receive Assist]
2) Adj item:
[Low1],[Low2],
[Low3],[Center1],
[Center2], [Center3
],[High1],[High2],[Hi
gh3]
Press [Apply All]
button to store the
adjustment value.
1) Adj item:
[Transmit Assist]
2) Adj item:
[Low1],[Low2],
[Low3],[Center1],
[Center2], [Center3
],[High1],[High2],[Hi
gh3]
PTT: Press [Trans-
mit] button.
Press [Apply All]
button to store the
adjustment value.
Measurement
Test- Termi-
Unit Unit
nal
ANT
Ext.SP
connec-
tor
Ter-
Unit Unit Parts
minal
[PC test
mode]
[ ], [
Adjustment
Parts Method
Check
12dB SINAD or
more
Adjustment
Method
[PC test mode] 2.5V±0.1V
[Automatic Adjustment
] [PC test mode]
]
Press [ Tune Assist Press [Apply All]
Voltage ] button. button to store the
Press [ Apply All ] but- adjustment value
ton to store the adjust- after all adjustment
ment value after the point was adjusted.
automatic adjustment
has fi nished. Check!
[ Manual Adjustment ] The assist adjust-
[ V ] indicator on the ment value must be
PC window shows between from 50 to
VCO lock voltage. 3800.
Change the adjustment
value to get VCO lock
voltage within the limit
of the specifi ed voltage.
Note:
Confi rm the VCO lock
voltage approximately
3 seconds after the
adjustment value is
changed.
Specifi cations/
Remarks
Specifi cations/
Remarks