Kenwood NX-720 Service Manual page 68

NX-720
Item
Panel test mode
5. Sensitivity 1) CH-Sig: 1-1
check SSG output
Wide:
–117dBm (0.32µV)
(MOD: 1kHz/±3kHz)
Narrow:
–117dBm (0.32µV)
(MOD: 1kHz/±1.5kHz)
Common Section
Item
Panel tuning mode
1. Setting 1) DC voltage: 13.6V
2) SSG standard modulation
[Wide] MOD: 1kHz, DEV: 3kHz
[Narrow] MOD: 1kHz, DEV: 1.5kHz
This adjustment
2. Receive
Assist can be performed
only PC test mode.
This adjustment
3.Transmit
Assist can be performed
only PC test mode.
68
ADJUSTMENT
Condition
PC test mode
equipment
1) Test Channel SSG
Channel: 1 AF VM
Test Signaling Oscillo-
Mode: Analog scope
Signaling: 1 Distortion
SSG output meter
Wide: 4 Dum-
–117dBm (0.32µV) my load
(MOD: 1kHz/±3kHz)
Narrow:
–117dBm (0.32µV)
(MOD: 1kHz/±1.5kHz)
Condition
PC test mode
equipment
1) Adj item:
[Receive Assist]
2) Adj item: [Low1],
[Low2], [Low3],
[Center1], [Cen-
ter2], [Center3],
[High1], [High2],
[High3]
Press [Apply All]
button to store the
adjustment value.
1) Adj item:
[Transmit Assist]
2) Adj item: [Low1],
[Low2], [Low3],
[Center1], [Cen-
ter2], [Center3],
[High1], [High2],
[High3]
PTT: Press
[Transmit] button.
Press [Apply All]
button to store the
adjustment value.
Measurement
Test- Termi-
Unit Unit
nal
ANT
Ext.SP
con-
nector
Measurement
Test-
Unit Terminal Unit
Adjustment
Parts Method
Check 12dB SINAD or
more
Adjustment
Parts Method
[PC test [PC test mode] 2.5V±0.1V
mode] [Automatic Adjust-
ment ] [PC test mode]
[ ],
Press [Tune Assist Press [Apply All]
[ ]
Voltage ] button. button to store the
Press [Apply All] adjustment value
button to store the after all adjustment
adjustment value point was adjusted.
after the automatic
adjustment has Check!
fi nished. The assist adjust-
[Manual Adjust- ment value must be
ment] between from 340 to
[V] indicator on 3550.
the PC window
shows VCO lock
voltage. Change
the adjustment
value to get VCO
lock voltage within
the limit of the
specifi ed voltage.
Note:
Confi rm the VCO
lock voltage ap-
proximately 3
seconds after the
adjustment value
is changed.
Specifi cations/
Remarks
Specifi cations/
Remarks