Transmit Adjustment - Icom IC-F4101D Service Manual

5-3 TRANSMIT ADJUSTMENTS
1) Select an adjustment item using [↑]/[↓] on the PC's keyboard.
2) Set or modify the adjustment value as specifi ed using [←]/[→] on the PC's keyboard, then push [ENTER].
TRANSCEIVER'S
ADJUSTMENT
TX OUTPUT 1 • Channel
POWER • Transmitting
(Hi power)
(L2 power) 2 • Channel
• Transmitting
(L1 power) 3 • Channel
• Transmitting
MODULATION 1
BALANCE
2 • Set the coursor on [BAL Start] to enter the "MODULATION BAL-
(Band low) 3 • Channel
• Transmitting
(Band center) 4 • Channel
• Transmitting
(Band high) 5 • Channel
• Transmitting
6 • Set the coursor on [BAL Start] to quit the "MODULATION BAL-
FM DEVIATION 1 • Set the coursor on [MOD N Start] to enter the "FM DEVIATION
-Narrow-
(Band low)
2 • Channel
• Transmitting
(Band center) 3 • Channel
• Transmitting
(Band high) 4 • Channel
• Transmitting
5 • Set the coursor on [MOD N Start] to quit the "FM DEVIATION
FM DEVIATION 1 • Set the coursor on [MOD W Start] to enter the "FM DEVIATION
-Wide-*
(Band low)
2 • Channel
• Transmitting
(Band center) 3 • Channel
• Transmitting
(Band high) 4 • Channel
• Transmitting
5 • Set the coursor on [MOD W Start] to quit the "FM DEVIATION
*: For all models except [USA].
CONDITION
: 1-4 • Connect an RF power meter to the an-
tenna connector.
: 1-5
: 1-6
• Set "MOD -Narrow-" to "90," and set the
– TX mode to "2" on the "ADJUSTMENT
UTILITY" screen.
ANCE" adjustment mode.
: 1-7 • Connect a modulation analyzer with an
oscilloscope to the antenna connector
through an attenuator, and set it as;
HPF
: 1-8
LPF
De-emphasis : OFF
Detector
: 1-9
ANCE" adjustment mode.
-Narrow-" adjustment mode.
: 1-10 • Connect a modulation analyzer to
the antenna connector through an
attenuator, and set it as "MODULATION
: 1-11
BALANCE."
• Connect an audio generator to the [MIC]
: 1-12
jack through the JIG cable, and set it as;
Frequency
Waveform
Level
-Narrow-" adjustment mode.
-Wide-" adjustment mode.
: 1-13 • Connect a modulation analyzer to
the antenna connector through an
attenuator, and set it as "MODULATION
BALANCE."
• Connect an audio generator to the [MIC]
: 1-14
jack through the JIG cable, and set it as
"FM DEVIATION -Wide-."
: 1-15
-Wide-" adjustment mode.
OPERATION
: OFF
: 15 kHz
: (P–P)/2
: 1 kHz
: Sinewave
: 150 mVrms
5 - 5
ADJUSTMENT
VALUE
ITEM
4.0 W
[Power (Hi)]
[Power (L2)] 2.0 W
1.0 W
[Power (L1)]
[MOD -Narrow-] 90
[TX mode] 2
[BAL Start] –
[BAL 1]
As flat as possible.
[BAL 2]
[BAL 3]
No over or under shoot.
[BAL Start] –
–
[MOD N Start]
±2.05 to ±2.15
[MOD N L]
kHz
[MOD N C]
[MOD N H]
–
[MOD N Start]
–
[MOD W Start]
±4.05 to ±4.15
kHz±
[MOD W L]
[MOD W C]
[MOD W H]
–
[MOD W Start]