Transmit Adjustments - Icom IC-F4011 Service Manual

5-3 TRANSMIT ADJUSTMENT
1) Select an adjustment item using cursor or [↑] / [↓] of the PC's keyboard.
2) Set or modify the adjustment value as specifi ed using [←] / [→] of the PC's keyboard, then push [ENTER].
ADJUSTMENT ADJUSTMENT CONDITION
TRANSMIT 1
OUTPUT
POWER
Hi power 2 • Channel
• Transmitting
L2 power 3 • Channel
• Transmitting
L1 power 4 • Channel
• Transmitting
DEVIATION 1 • Connect a modulation analyzer
-Preparation- t o t h e a n t e n n a c o n n e c t o r
through an Attenuator.
2 • Connect an audio generator to
the MIC line through the JIG
cable.
-Adjustment- 3 • Channel
NARROW • Transmitting
MODULATION 1 • Connect a modulation analyzer
BALANCE t o t h e a n t e n n a c o n n e c t o r
-Preparation- through an attenuator.
• Connect an oscilloscope to
the Detect ter minal of the
modulation analyzer.
-Adjustment- 2 • Channel
NARROW • No audio signals are applied.
• Transmitting
WIDE 4 • Channel
• No audio signals are applied.
• Transmitting
CTCSS/DTCS 1 • Connect a modulation analyzer
DEVIATION t o t h e a n t e n n a c o n n e c t o r
-Preparation- through an attenuator.
-Adjustment- 2 • Channel
• No audio signals are applied.
• Transmitting
• Connect an RF power meter to the
– antenna connector.
: CH.3 1) Adjust the transmit output power
using [←] / [→] on the PC's key-
board.
: CH.4
2) Push [ENTER] to store the adjust
value.
: CH.5
• Set the modulation analyzer as;
HPF
LPF
De-emphasis : OFF
Detector
• Set the audio generator as;
Modulation
Level
Wave form
: CH.6 1) Adjust the deviation using [←] / [→]
on the PC's keyboard.
2) Push [ENTER] to store the adjust
value.
• Set the modulation analyzer as;
HPF
LPF
De-emphasis : OFF
Detector
: CH.9 1) Adjust the waveform using [←] / [→]
on the PC's keyboard.
2) Push [ENTER] to store the adjust
value.
: CH.10
• Set the modulation analyzer as;
HPF
LPF
De-emphasis : OFF
Detector
: CH.11 1) Adjust the deviation using [←] / [→]
on the PC's keyboard.
2) Push [ENTER] to store the adjust
value.
5 - 5
OPERATION
: OFF
: 20 kHz
: (P-P)/2
: 1 kHz
: 150 mV rms
: Sine wave
: OFF
: 20 kHz
: (P-P)/2
–
: OFF
: 20 kHz
: (P-P)/2
ADJUSTMENT
VALUE
ITEM
– –
[Power (Hi)] 4.0 W
[Power (L2)] 2.0 W
[Power (L1)] 1.0 W
– –
– –
±2.05–2.15
[MOD N]
kHz
– –
– –
Square
waveform
[BAL N]
[BAL Ratio]
– –
±0.66–0.70
[CTCSS/DTCS]
kHz