Icom IC-F24/S Service Manual Addendum page 65

5-3-2 TRANSMIT ADJUSTMENT FOR IC-F26-L
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 ADJUSTMENT CONDITION
TRANSMIT 1
OUTPUT
POWER
-Preparation-
-Adjustment- 2 • CH.
Hi • Transmitting
L2 3 • CH.
• Transmitting
L1 4 • CH.
• 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 • CH.
NARROW • Transmitting
WIDE 4 • CH.
• 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 • CH.
NARROW • Transmitting
WIDE 3 • CH.
• 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 • CH.
• Transmitting
• Connect an RF Power Meter to the
antenna connector.
–
: CH.3 1) Adjust the transmit output power
using [←] / [→] keys on the PC's
keyboard.
: CH.4
2) Push the [ENTER] key 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 [←] / [→]
keys on the PC's keyboard.
2) Push the [ENTER] key to store the
: CH.7
adjust value.
• Set the Modulation Analyzer as;
HPF
LPF
De-emphasis : OFF
Detector
: CH.8 1) Adjust the waveform using [←] / [→]
keys on the PC's keyboard.
2) Push the [ENTER] key to store the
adjust value.
: CH.9
• Set the Modulation Analyzer as;
HPF
LPF
De-emphasis : OFF
Detector
: CH.10 1) Adjust the deviation using [←] / [→]
keys on the PC's keyboard.
2) Push the [ENTER] key to store the
adjust value.
5 - 9
OPERATION
: OFF
: 20 kHz
: (P-P)/2
: 1 kHz
: 40 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
±4.05–4.15
[MOD Ratio]
kHz
– –
– –
Square
waveform
[BAL N]
Flat
[BAL Ratio]
– –
±0.66–0.70
[CTCSS/DTCS]
kHz