Moduration Adjustments - Icom IC-T70A Service Manual

5-4 MODURATION ADJUSTMENTS

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.
ADJUSTMENT
FM (Wide) 1 • Frequency: Displayed
DEVIATION • Transmitting
VHF (Low band)
VHF (High band) 2 • Frequency: Displayed
• Transmitting
UHF ( Low band) 3 • Frequency: Displayed
• Transmitting
UHF (High band) 4 • Frequency: Displayed
• Transmitting
VHF (Low band) 5 • Frequency: Displayed
• Transmitting
VHF (High band) 6 • Frequency: Displayed
• Transmitting
UHF ( Low band) 7 • Frequency: Displayed
• Transmitting
UHF (High band) 8 • Frequency: Displayed
• Transmitting
¤ CONNECTION
SETTING
HPF : OFF
LPF : 20 kHz
• POWER SUPPLY
AMMETER
+ −
+ –
DC power supply
6–10 V/3 A
TRANSCEIVER'S
CONDITION
1) Connect a modulation analyzer to
the antenna connector through an
attenuator, and set it as;
2) Connect an audio generator to the JIG
cable #2 and set it as;
• Set the audio generator as;
MODULATION ANALYZER
(30 – 600 MHz)
VOLTAGE METER
+
−
+
–
OPERATION
HPF : OFF
LPF : 20 kHz
Frequency : 1 kHz
Level : 150 mVrms
Level : OFF
JIG CABLE #2
(See the page 5 -1.)
ATTENUATOR
(30 dB/10 W)
"7.2 V"
5 - 8
ADJUST-
MENT VALUE
ITEM
± 4.1 to ± 4.3
Minimum level
To [MIC]
kHz