Kenwood NX-3400 Service Manual page 41

4.7 Common Section
Note: "Adj points" are described by abbreviation as "8" for 800M and "9" for 900M.
Item
<PC>: PC tuning mode
<Panel>: Panel tuning mode
1. Setting 1) DC voltage:7.5V
2) SSG standard modulation
[Wide 5k] MOD:1kHzDEV:3kHz
[Wide 4k] MOD:1kHzDEV:2.4kHz
[Narrow] MOD:1kHzDEV:1.5kHz
2. LCD <PC>
Contrast 1) Adj item: [LCD Contrast]
<Panel>
1) Adj item: [CNTR]
3. VCO Assist <PC>
1) Adj item: [VCO Assist]
2) Adj points: 10 points
[8TX L], [8TX C], [8TX H],
[8RX/TA L], [8RX/TA C],
[8RX/TA H], [9TX L], [9TX H],
[9RX/TA L], [9RX/TA H]
<Panel>
1) Adj item: [AST]
2) Adj points: *Same as above
Note: Confirm the VCO lock voltage approximately 3 seconds after the adjustment value is changed.
4. Frequency <PC>
1) Adj item: [Frequency]
2) SSG output : -20dBm (22.4mV)
(CW (without modulation))
<Panel>
*The Frequency adjustment can be
performed only in PC tuning mode.
Caution:
Perform the frequency adjustment under the following conditions.
• Temperature range of +20C to +33C (+68.0F to +91.4F).
(The temperature is displayed on the Frequency adjustment screen of the KPG-D3/D3N and the LCD of the
transceiver.)
• Use an accuracy of 0.001ppm for the SSG. (Use a standard oscillator if necessary.)
Remark: "Frequency" is adjusted under receiving condition with SSG.
5. RTC <PC>
Correction 1) Adj item: [RTC Correction]
<Panel>
1) Adj item: [RTC]
Condition Measurement
SSG
Frequency
Counter
Test Point
(CN412/MAIN
UNIT)
Adjustment
Unit Parts Method
[+], [-] Write fixed value "115".
Press [Apply] button for <PC>, or
[], []
[ ] button for <Panel> to store
the adjustment value.
[+], [-] <PC>
[Automatic Adjustment]
1) Press [Autotune] button.
2) Press [Apply] button to store the
adjustment value after the
automatic adjustment has
finished.
3) Verify that the VCO lock voltage
[], []
is within the specification.
<PC> <Panel>
[Manual Adjustment]
1) Change the adjustment value to
get VCO lock voltage within the
specified voltage.
2) Press [Apply] button for <PC>,
or [ ] button for <Panel> to
store the adjustment value. after
all adjustment points have been
adjusted.
[+], [-] Press [Start] button of "Auto
Tuning". Press [Apply] button to
store the adjustment value after
the automatic adjustment has
finished.
"IF20" value = Within 0±10 digits.
The value of "IF20" will become
around "0" after the adjustment
has finished.
[+], [-] The adjustment value should input
the display of the Frequency
Counter.
[], []
Press [Apply] button for <PC>, or
[ ] button for <Panel> to store
the adjustment value.
Specifications
/Remarks
2.5V±0.1V
(No.RA070<Rev.001>)1-41