Transmit Adjustment - Icom IC-F3021S Service Manual

6-3 TRANSMIT ADJUSTMENT

Select an adjustment item using [↑] / [↓] keys, then set to the specifi ed value using [←] / [→] keys on the connected PC's keyboard.
ADJUSTMENT
OUTPUT 1 • Channel
POWER • Transmitting
[Power (Hi)]
[Power (L2)] 2 • Channel
• Transmitting
[Power (L1)] 3 • Channel
• Transmitting
MODULATION 1 • Channel
• No audio applied to the JIG cable.
BALANCE
• Set an FM deviation meter same as;
[BAL]
HPF
LPF
De-emphasis
Detector
• Transmitting
1 • Channel
FM
• Connect an audio generator to the JIG
DEVIATION
cable and set as;
(NARROW)
Frequency
[MOD N]
Level
• Set the FM deviation meter to same condi-
tion as "MODULATION BALANCE."
• Transmitting
2 • Channel
(WIDE)
• Transmitting
[MOD ratio]
3 • Channel
(MIDDLE)*
• Transmitting
[MOD ratio]
1 • Channel
CTCSS/DTCS
DEVIATION • No audio applied to the JIG cable.
[CTCS/DTCS] • Set the FM deviation meter to same condi-
tion as "MODULATION BALANCE."
• Transmitting
*; [EUR] only.
ADJUSTMENT CONDITION
: CH 3
: CH 4
: CH 5
: CH 6
: OFF
: 20 kHz
: OFF
: (P–P)/2
: CH 5
: 1.0 kHz
: 150 mV rms
: CH 9
: CH 7
: CH 8
MEASUREMENT
UNIT OPERATION
Top Connect an RF power meter to
panel the antenna connector.
Top Connect the FM deviation me-
panel ter to the antenna connector
through an attenuator.
Top Connect the FM deviation me-
panel ter to the antenna connector
through an attenuator.
Top Connect an FM deviation meter to
panel the antenna connector through
an attenuator.
6 - 5
VALUE
5.0 W
2.0 W
1.0 W
Set to square wave form
±2.05 to ±2.15 kHz
±4.05 to ±4.15 kHz
±3.15 to ±3.25 kHz
±0.68 to ±0.72 kHz