Icom IC-T70A Service Manual page 21

5-4 MODURATION ADJUSTMENTS (Continued)
1) Select an adjustment item using [VOL].
2) Set or modify the adjustment value as specifi ed using [DIAL], then push [BAND] to store the adjustment value.
TRANSCEIVER'S
ADJUSTMENT
TONE DEVIATION 1 • Frequency: Displayed
• Transmitting
[FM Mode]
DTCS (VHF)
DTCS (UHF) 2 • Frequency: Displayed
• Transmitting
CTCSS (VHF) 3 • Frequency: Displayed
• Transmitting
CTCSS (UHF) 4 • Frequency: Displayed
• Transmitting
DTMF (VHF) 5 • Frequency: Displayed
• Transmitting
DTMF (UHF) 6 • Frequency: Displayed
• Transmitting
European tone 7 • Frequency: Displayed
(VHF) • Transmitting
European tone 8 • Frequency: Displayed
(UHF) • Transmitting
[Narrow FM Mode] 9 • Frequency: Displayed
DTCS (VHF) • Transmitting
DTCS (UHF) 10 • Frequency: Displayed
• Transmitting
CTCSS (VHF) 11 • Frequency: Displayed
• Transmitting
CTCSS (UHF) 12 • Frequency: Displayed
• Transmitting
DTMF (VHF) 13 • Frequency: Displayed
• Transmitting
DTMF (UHF) 14 • Frequency: Displayed
• Transmitting
European tone 15 • Frequency: Displayed
(VHF) • Transmitting
European tone 16 • Frequency: Displayed
(UHF) • Transmitting
¤ CONNECTION
• POWER SUPPLY
AMMETER
+
−
+ –
DC power supply
6–10 V/3 A
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CONDITION
1) Connect a modulation analyzer to
the antenna connector through an
attenuator, and set it as;
HPF
LPF
2) Apply no audio signal to the [MIC] jack.
VOLTAGE METER
"7.2 V"
+
−
+
–
OPERATION
: OFF
: 20 kHz
MODULATION ANALYZER
(30– 600 MHz)
SETTING
HPF : OFF
LPF : 20 kHz
5 - 10
ADJUSTMENT
VALUE
ITEM
±0.7 to ±0.8
kHz
±3.4 to ±3.6
kHz
±0.37 to ±0.38
kHz
±1.74 to ±1.76
kHz
ATTENUATOR
(30 dB/10 W)