Kenwood NX-5700 Service Manual page 78

Item Condition
Panel tuning
mode
12. 1) Adj item:
Balance [Balance]
*1 Adjust:[****]
Deviation meter
LPF: 3kHz
HPF: OFF
2) Adj item:
[Low1]→
[Low3]→
[Center2]→
[High1]→
[High3]
Adjust:[****]
PTT : ON
Press [ ] key to
store the adjust-
ment value.
*1 : Refer to the "4.19.1 Necessary Deviation adjustment item for each signaling and mode" table.
Balance adjustment is common with the adjustment of all signaling deviations.
13. 1) Adj item: [ADEV]
Maxi- Adjust:[****]
mum Deviation meter
Devia- LPF: 15kHz
tion HPF: OFF
*2 2) Adj item:
[Low1]→
[Analog [Low3]→
Wide [Center2]→
5k] [High1]→
[High3]
Adjust:[****]
PTT : ON
Press [ ] key to
store the adjust-
ment value.
1-78 (No.RA020<Rev.002>)
Measurement
PC test mode Test-
equip-
ment
1) Adj item: Devia-
[Balance] tion
Deviation meter meter
LPF: 3kHz Oscillo-
HPF: OFF scope
2) Adj item:
[Low1]→
[Low3]→
[Center2]→
[High1]→
[High3]
Press [Transmit]
button.
Press [Apply All]
button to store the
adjustment value.
1) Adj item: Devia-
[Maxmum Devia- tion
tion (Analog Wide meter
5k)] Oscil-
Deviation meter lo-
LPF: 15kHz scope
HPF: OFF
2) Adj item:
[Low1]→
[Low3]→
[Center2]→
[High1]→
[High3]
Press [Transmit]
button.
Press [Apply All]
button to store the
adjustment value.
Unit Ter- Unit Parts
minal
Panel ANT Panel [Panel
tuning
mode]
[],
[]
[PC
test
mode]
[←],
[→]
Panel ANT Panel [Panel
tuning
mode]
[],
[]
[PC
test
mode]
[←],
[→]
Adjustment
Method
The Deviation of 20Hz 2kHz Tone de-
frequency is fixed. viation is with-
Change the 2kHz ad- in ± 1.0% of
justment value to be- 20Hz tone de-
come the same viation.
deviation of 20Hz within
the specified range. [PC test
mode]
(a supplementary Press [Apply
explanation: All] button to
Another way to adjust is store the
ready. adjustment
(Same as TK-5710, the value after all
old model of NX-5700). adjustment
Press [AUX(Orange)] points have
key to switch the tone to been adjusted.
100Hz square wave.
Then, make the demod-
ulation waveform shown
on oscilloscope into
square shape.)
Write fixed value "491" 4150~4250Hz
for each adjustment
point. (The value is writ- [PC test
ten below.) Transmit at mode]
each adjustment point Press [Apply
and check that the devi- All] button to
ation is between 4150Hz store the
and 4250Hz. adjustment
Deviation meter value after all
LPF: 15kHz adjustment
HPF: OFF points have
been adjusted.
[Panel tuning mode]
PTT: ON
[PC test mode]
PTT: Press [Transmit]
button
Specifica-
tions
/Remarks