Transmit Adjustment - Icom IC-2730A Service Manual

5-3 TRANSMIT ADJUSTMENTS (Continued)
Select an adjustment item using [DUP MONI]/[LOW DTMF], and then set the adjustment value as specifi ed using [DIAL].
ADJUSTMENT
ADJUSTMENT
MODULATION
BALANCE
-LEFT BAND-
(BAND LOW)
[FM]
[FM-N] [rdE] (NAR)
(BAND CENTER)
[FM]
[rdE] (NAR)
[FM-N]
(BAND HIGH)
[FM]
[FM-N] [rdE] (NAR)
-RIGHT BAND-
(BAND LOW)
[FM]
[FM-N] [rdE] (NAR)
(BAND CENTER)
[FM]
[FM-N] [rdE] (NAR)
(BAND HIGH)
[FM]
[FM-N] [rdE] (NAR)
TONE DEVIATION
-CTCSS-
[Left band]
[Right band]
-DTCS-
[Left band]
[Right band]
ITEM
1 1) Connect a modulation analyzer to the antenna connector through
an attenuator, and then set it as;
[rdE]
HPF:
LPF:
De-emphasis: OFF
2
Detector:
2) No audio signal is applied to the JIG cable.
3
[rdE]
3) While transmitting, adjust the modulation balance using [DIAL],
and then push [MW] to store the adjustment value.
4
5
[rdE]
6
7
[rdE]
8
9
[rdE]
10
11
[rdE]
12
1 1) Connect a modulation analyzer to the antenna connector through
an attenuator, and then set it as;
[CtC]
HPF:
LPF:
2
De-emphasis: OFF
3
Detector:
2) No audio signal is applied to the JIG cable.
[dtC]
4
3) While transmitting, adjust the tone deviation using [DIAL], and
then push [MW] to store the adjustment value.
OPERATION
OFF
20 kHz
(P-P)/2
OFF
20 kHz
(P-P)/2
5-4
VALUE
±4.0 kHz
±2.0 kHz
±4.0 kHz
±2.0 kHz
±4.0 kHz
±2.0 kHz
±4.0 kHz
±2.0 kHz
±4.0 kHz
±2.0 kHz
±4.0 kHz
±2.0 kHz
±0.75 kHz