Kenwood NX-3720HG Service Manual page 43

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)
4.7 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] [LCD Contrast]
Adjust:[****] Data: [****]
Press [ ] Press [Apply] button
button to store to store the
the adjustment adjustment value.
value.
3. 1) Adj item: 1) Adj item:
VCO [AST] [VCO Assist]
Assist Adjust:[****] 2) Adj item:
2) Adj item: [Low1],[Low2],
[L1]→ [Low3],
[L2]→ [Center1], [Center2],
[L3]→ [Center3],
[C1]→ [High1],[High2]
[C2]→ [High3]
[C3]→
[H1]→ Press [Apply] button
[H2]→ to store the
[H3]→ adjustment value.
Adjust:[****]
Press [ ]
button to store
the adjustment
value.
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
Measurement
Test- Unit Terminal Unit Parts
equipment
Panel ANT
Ext. SP
connector
Unit Terminal Unit Parts
Panel [Panel
tuning
mode]
[],
[]
[PC
test
mode]
[+], [-]
Panel [Panel
tuning
mode]
[],
[]
[PC
test
mode]
[+], [-]
Adjustment Specifications
Method
Check 12dB SINAD
or more
Adjustment Specifications
Method
Write the value as
followings.
280 (Reference value)
[PC test mode] 2.5V±0.1V
[Automatic [Automatic
Adjustment] Adjustment]
1) Press [Autotune] After the
button. automatic
2) Press [Apply] button adjustment is
to store the performed, verify
adjustment value after that the VCO lock
the automatic voltage is within
adjustment has the voltage range
finished. which is specified
[Manual Adjustment] by the manual
[V] Indicator on the PC adjustment.
window shows VCO [Manual
lock voltage. Change Adjustment]
the adjustment value Press [Apply]
to get VCO lock button to store
voltage within the limit the adjustment
of the specified value after all
voltage. adjustment
points have been
Note:
adjusted.
Confirm the VCO
Adjustment value
lock voltage
range:
approximately 3
300 - 3000
seconds after the
adjustment value is
changed.
(No.RA054<Rev.001>)1-43
/Remarks
/Remarks