5 - 8
5-9 DEVIATION ADJUSTMENTS
Select an adjustment item using
[2]
/
[8]
, then set the adjustment value as specifi ed using
[DIAL]
.
ADJUSTMENT
ADJUSTMENT
ITEM
OPERATION
VALUE
FM DEVIATION
[FMV]
1
1) Set the power supply voltage to 7.4 V.
1) Connect a modulation analyzer to the antenna connector through
an attenuator, and set is as;
HPF
:
OFF
LPF
: 20 kHz
De-emphasis
:
OFF
Detector
:
(P-P)/2
2) Connect an audio generator to the JIG cable (See the page 5-1).
–
(Mod. Freq. =1 kHz)
[VHF (BAND LOW)]
2
1) Set the audio generator as;
Frequency
: 1 kHz
Level
: 90 mVrms
2) While transmitting, adjust the deviation using
[DIAL]
, then push
[BAND]
to store the adjustment value.
4.1–4.3 kHz
[VHF (BAND HIGH)]
3
[UHF (BAND LOW)]
4
[UHF (BAND HIGH)]
5
(Mod. Freq. =300 Hz)
[VHF (BAND LOW)]
[FMR]
1
1) Set the audio generator as;
Frequency
: 300 Hz
Level
: 90 mVrms
2) While transmitting, adjust the deviation using
[DIAL]
, then push
[BAND]
to store the adjustment value.
3.5–3.6 kHz
[VHF (BAND HIGH)]
2
[UHF (BAND LOW)]
3
3.7–3.8 kHz
[UHF (BAND HIGH)]
4
DV DEVIATION
–
1
1) Set the power supply voltage to 7.4 V.
1) Connect a modulation analyzer to the antenna connector through
an attenuator, and set is as;
HPF
:
OFF
LPF
: 20 kHz
De-emphasis
:
OFF
Detector
:
(P-P)/2
2) Connect an audio generator to the JIG cable (See the page 5-1),
and set it as;
Frequency
: 1 kHz
Level
: 90 mVrms.
–
(VCO MODULATION)
[VHF (BAND LOW)]
[DVV]
2
• While transmitting, adjust the deviation using
[DIAL]
, then push
[BAND]
to store the adjustment value.
1.1–1.3 kHz
[VHF (BAND HIGH)]
3
[UHF (BAND LOW)]
4
[UHF (BAND HIGH)]
5
(REF. MODULATION)
[VHF (BAND LOW)]
[DVR]
6
Minimum
deviation
[VHF (BAND HIGH)]
7
[UHF (BAND LOW)]
8
[UHF (BAND HIGH)]
9
