Transmit Adjustment - Icom ic-f5021 Service Manual

6-3 TRANSMIT ADJUSTMENT

1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC's keyboard.
2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC's keyboard, then push the [ENTER] key.
ADJUSTMENT
OUTPUT 1 • Channel
POWER • Transmitting
[Power (Hi)]
[Power (L2)] 2 • Channel
• Transmitting
[Power (L1)] 3 • Channel
• Transmitting
MODULATION 1 • Channel
BALANCE • No audio signals applied to the JIG cable.
[BAL] • Set a modulation analyzer as;
HPF
LPF
De-emphasis
Detector
• Transmitting.
1 • Connect an audio generator to the JIG
DEVIATION
cable and set as;
- P R E PA R A -
Frequency
TION-
Level
• Set the modulation analyzer to the
same condition as "MODULATION BAL-
ANCE."
2 • Channel
(NARROW)
• Transmitting
[MOD N]
3 • Channel
(WIDE)
• Transmitting
[MOD Ratio]
4 • Channel
(MIDDLE)*
• Transmitting
[MOD Ratio]
1 • Channel
CTCSS/DTCS
• No audio signals applied to the JIG cable.
DEVIATION
• Set the Modulation Analyzer to the
[CTCSS/DTCS]
same condition as "MODULATION BAL-
ANCE."
• Transmitting
*: [EUR] only
ADJUSTMENT CONDITION
: 1-4
: 1-5
: 1-6
: 1-7
: OFF
: 20 kHz
: OFF
: (P–P)/2
: 1.0 kHz
: 40 mVrms
: 1-8
: 1-9
: 1-10
: 1-11
OPERatio
Connect an RF power meter to the an-
tenna connector.
Connect the Modulation Analyzer with
an oscilloscope to the antenna connec-
tor through an attenuator.
Connect a Modulation Analyzer with an
oscilloscope to the antenna connector
through an attenuator.
Connect a Modulation Analyzer with an
oscilloscope to the antenna connector
through an attenuator.
6 - 5
VALUE
25 W
[25W ver.]
50 W
[50 W ver.]
10 W
[25W ver.]
25 W
[50 W ver.]
2.5 W
[25W ver.]
5.0 W
[50 W ver.]
Set to square
waveform
–
±2.05 to ±2.15 kHz
±4.05 to ±4.15 kHz
±3.25 to ±3.35 kHz
±0.65 to ±0.75 kHz