Icom IC-91A Service Manual page 21

6-2 TRANSMITTER ADJUSTMENT
• Set the specified value using [DIAL], and push [BAND] to store the set value. Then push [2] to move to the next adjustment item.
ADJUSTMENT ITEM
FM DEVIATION
(/8
[FMV]
(VHF)
(UHF)
(/4
[FMR]
(VHF)
(UHF)
‡
DIGITAL DEVIATION
&88
[DVV]
(VHF)
(UHF)
&84
[DVR]
(VHF)
(UHF)
DTMF, CTCSS/DTCS
DEVIATION
&6/(
[DTMF]
(DTMF, VHF)
(DTMF, UHF)
%6
[CT]
(CTCSS, VHF)
(CTCSS, UHF)
&6
[DT]
(DTCS, VHF)
(DTCS, UHF)
*Displayed on the function display.
†The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
‡Necessary for the IC-91AD or when UT-121 is installed into the
(continued)
ADJUSTMENT CONDITION
1 • Connect an audio generator to the [MIC] jack through the JIG cable
(see the page 6-1) and set as;
Frequency : 1.0 kHz
Level : 90 mVrms
• Connect a modulation analyzer to the antenna connector through an
attenuator and set as;
LPF : 20 kHz
HPF : OFF
De-emphasis : OFF
Detector : (P-P)/2
• Transmitting
2 • Transmitting
3 • Set the audio generator to the [MIC] jack through the JIG cable (see
the page 5-1) and as;
Frequency : 300 Hz
Level : 90 mVrms
• Transmitting
4 • Transmitting
1 • Connect a modulation analyzer to the antenna connector through an
attenuator and set as;
LPF : 20 kHz
HPF : OFF
De-emphasis : OFF
Detector : (P-P)/2
• Transmitting
2 • Transmitting
3 • Transmitting
4 • Transmitting
1 • Connect a modulation analyzer to the antenna connector through an
attenuator and set as;
LPF : 20 kHz
HPF : OFF
De-emphasis : OFF
Detector : (P-P)/2
• No audio signals are applied to [MIC] jack.
• Transmitting
2 • Transmitting
3 • Transmitting
4 • Transmitting
5 • Transmitting
6 • Transmitting
IC-91A.
6 - 4
VALUE
±4.4 kHz
±1.2 kHz
minimum deviation
±3.5 kHz
±0.75 kHz