Tone Deviation Adjustments - Icom IC-80AD Service Manual

5-10 TONE DEVIATION ADJUSTMENTS

Select an adjustment item using [2] / [8], then set the adjustment value as specifi ed using [DIAL].
ADJUSTMENT
ADJUSTMENT
ITEM
TONES DEVIATION
[DTMF]
(VHF)
(UHF)
[EUROPEAN TONE]
(VHF)
[EUR]
(UHF)
[CTCSS]
(VHF)
(UHF)
[DTCS]
(VHF)
[DTC]
(UHF)
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1 1) Set the power supply voltage to 7.4 V.
2) Connect a modulation analyzer to the antenna connector through
an attenuator, and set is as;
HPF
LPF
De-emphasis : OFF
[DT]
Detector
3) No audio signals are applied.
2 • While transmitting, adjust the deviation using [DIAL], then push
[BAND] to store the adjustment value.
3
4
[CT]
5
OPERATION
: OFF
: 20 kHz
: (P-P)/2
5 - 9
VALUE
–
3.4–3.6 kHz
0.75–0.85
kHz
0.7–0.8 kHz