Icom ID-51A Service Manual - Page 28

Dial], Tone Deviation

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5-3 TRANSMIT ADJUSTMENT (Continued) • TONE DEVIATION ADJUSTMENTS Select an adjustment item using / , and then set the adjustment value as specified using [DIAL]. ADJUSTMENT ADJUSTMENT ITEM OPERATION VALUE TONE DEVIATION 1 1) Set the power supply voltage to 7.4 V. 2) Connect a modulation analyzer to the antenna connector through an attenuator, and then set it as; - HPF : OFF - LPF : 20 kHz De-emphasis : OFF Detector : (P-P)/2 3) No audio signal is applied. -VHF[DTCS] (FM) (FM-N) [MDT] 2 • While transmitting, adjust the deviation using [DIAL], and then ±0.7 to ±0.8 push to store the adjustment value. kHz ±0.325 to ±0.425 kHz [CTCSS] (FM) (FM-N) 3 [MCT] ±0.7 to ±0.8 kHz ±0.325 to ±0.425 kHz [DTMF] (FM) (FM-N) 4 [MDM] ±3.4 to ±3.6 kHz ±1.65 to ±1.85 kHz [EURO TONE] (FM) (FM-N) 5 [MET] ±3.4 to ±3.6 kHz ±1.65 to ±1.85 kHz -UHF[DTCS] (FM) (FM-N) 6 [MDT] 7 ±0.7 to ±0.8 kHz ±0.325 to ±0.425 kHz [CTCSS] (FM) (FM-N) 8 [MCT] 9 ±0.7 to ±0.8 kHz ±0.325 to ±0.425 kHz [DTMF] (FM) (FM-N) 10 [MDM] 11 ±3.4 to ±3.6 kHz ±1.65 to ±1.85 kHz [EURO TONE] (FM) (FM-N) 12 [MET] 13 ±3.4 to ±3.6 kHz ±1.65 to ±1.85 kHz 5 - 10

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5 - 10
5-3 TRANSMIT ADJUSTMENT (Continued)
• TONE DEVIATION ADJUSTMENTS
Select an adjustment item using
/
, and then set the adjustment value as specified using
[DIAL]
.
ADJUSTMENT
ADJUSTMENT
ITEM
OPERATION
VALUE
TONE DEVIATION
–
1
1) Set the power supply voltage to 7.4 V.
2)
Connect a modulation analyzer to the antenna connector through
an attenuator, and then set it as;
HPF
: OFF
LPF
: 20 kHz
De-emphasis : OFF
Detector
: (P-P)/2
3)
No audio signal is applied.
–
-VHF-
[DTCS]
(FM)
[MDT]
2
•
While transmitting, adjust the deviation using
[DIAL
], and then
push
to store the adjustment value.
±0.7 to ±0.8
kHz
(FM-N)
±0.325 to
±0.425 kHz
[CTCSS]
(FM)
[MCT]
3
±0.7 to ±0.8
kHz
(FM-N)
±0.325 to
±0.425 kHz
[DTMF]
(FM)
[MDM]
4
±3.4 to ±3.6
kHz
(FM-N)
±1.65 to ±1.85
kHz
[EURO TONE]
(FM)
[MET]
5
±3.4 to ±3.6
kHz
(FM-N)
±1.65 to ±1.85
kHz
-UHF-
[DTCS]
(FM)
[MDT]
6
±0.7 to ±0.8
kHz
(FM-N)
7
±0.325 to
±0.425 kHz
[CTCSS]
(FM)
[MCT]
8
±0.7 to ±0.8
kHz
(FM-N)
9
±0.325 to
±0.425 kHz
[DTMF]
(FM)
[MDM]
10
±3.4 to ±3.6
kHz
(FM-N)
11
±1.65 to ±1.85
kHz
[EURO TONE]
(FM)
[MET]
12
±3.4 to ±3.6
kHz
(FM-N)
13
±1.65 to ±1.85
kHz