Kenwood NX-3720HG Service Manual page 100

Item
Panel test
mode
6. 1)CH-Sig: 1-1
Sensitivity SSG output
check Wide:
-117dBm
(0.32μV)
(MOD:
1kHz/±3kHz)
Narrow:
-117dBm
(0.32μV)
(MOD: 1kHz/
±1.5kHz)
4.25 Common Section
Item Condition
Panel tuning
mode
1. 1) DC voltage:13.6V
Setting 2) SSG standard modulation
[Wide] MOD:1kHz,DEV:3kHz
[Narrow] MOD:1kHz,DEV:1.5kHz
2.LCD 1) Adj item 1) Adj item
Contrast [CNTR]
Adjust:[****]
Press [ ]
button to
store the
adjustment
value.
3. 1) Adj item: 1) Adj item:
VCO [AST]
Assist Adjust:[****] 2) Adj item:
2) Adj item:
[L1]→
[L2]→
[L3]→
[L4]→
[L5]→
[L6]→
[C1]→
[C2]→
[C3]→
[C4]→
[C5]→
[H1]→
[H2]→
[H3]→
[H4]→
[H5]→
[H6]
Adjust:[****]
Press [ ]
button to
store the
adjustment
value.
1-100 (No.RA054<Rev.001>)
Condition
PC test mode
1)Test Channel SSG
Channel: 1 AF VM
Test Signaling Oscilloscope
Type: Analog Distortion
Signaling: 1 meter
SSG output 4ohm
Wide: Dummy load
-117dBm (0.32μV)
(MOD: 1kHz/±3kHz)
Narrow:
-117dBm (0.32μV)
(MOD: 1kHz/±1.5kHz)
Measurement
PC test mode Test-
equipment
[LCD Contrast]
Data: [****]
Press [Apply]
button to store the
adjustment value.
[VCO Assist]
[Low1],[Low2],
[Low3],[Low4],
[Low5], [Low6]
[Center1],
[Center2],
[Center3],
[Center4],
[Center5],
[High1],[High2]
[High3],[High4],
[High5][High6]
Press [Apply]
button to store the
adjustment value.
Measurement
Test- Unit Terminal Unit Parts
equipment
Panel ANT
Ext. SP
connector
Unit Terminal Unit
Panel [Panel
tuning
mode]
[],
[]
[PC
test
mode]
[+], [-]
Panel [Panel
tuning
mode]
[],
[]
[PC
test
mode]
[+], [-]
Adjustment
Method
Check
Adjustment
Parts Method
Write the value as
followings.
280 (Reference value)
[PC test mode]
[Automatic
Adjustment]
1) Press [Autotune]
button.
2) Press [Apply] button
to store the adjustment
value after the
automatic adjustment
has finished.
[Manual Adjustment]
[V] Indicator on the PC
window shows VCO
lock voltage. Change
the adjustment value
to get VCO lock
voltage within the limit
of the specified
voltage.
Note:
Confirm the VCO
lock voltage
approximately 3
seconds after the
adjustment value is
changed.
Specifications
/Remarks
12dB SINAD
or more
Specifications
/Remarks
2.5V±0.1V
[Automatic
Adjustment]
After the
automatic
adjustment is
performed,
verify that the
VCO lock
voltage is within
the voltage
range which is
specified by the
manual
adjustment.
[Manual
Adjustment]
Press [Apply]
button to store
the adjustment
value after all
adjustment
points have
been adjusted.
Adjustment
value range:
K: 1200 - 4096
K2: 500 - 1950