Transmit Adjustment - Icom IC-F5220D Service Manual

6-3 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
CONDITION
TX POWER 1 • Channel
(High power) • Transmitting
(L2 power) 2 • Channel
• Transmitting
(L1 power) 3 • Channel
• Transmitting
MODULATION 1 Channel
BALANCE • Transmitting
(Band low)
2
(Band center) 3 • Channel
• Transmitting.
(Band high) 4 • Channel
• Transmitting.
5
FM DEVIATION 1 • Push [ENTER] on the PC's keyboard, to enter the FM deviation
( Narrow mode) (For narrow mode) adjustment mode.
-Band low-
2 • Channel
• Transmitting
3 • Channel
-Band center-
• Transmitting
-Band high- 4 • Channel
• Transmitting
5 • Push [ENTER] on the PC's keyboard, to store the value and
quit the FM deviation (For narrow mode) adjustment mode.
(Wide mode)* 6 • Push [ENTER] on the PC's keyboard, to enter the FM deviation
-Band low- (For wide mode) adjustment mode.
7 • Channel
• Transmitting
-Band center- 8 • Channel
• Transmitting
-Band high- 9 • Channel
• Transmitting
10 • Push [ENTER] on the PC's keyboard, to store the value and
quit the FM deviation (For wide mode) adjustment mode.
*: For all models except [USA].
OPERATION
: 1-6 • Connect an RF power meter to the
antenna connector.
: 1-7
: 1-8
: 1-9 1) Set the TX mode to "2" on the "Adjust
Utility" screen.
2) Push [ENTER] on the PC's keyboard,
to enter the modulation balance
adjustment mode.
• Connect a modulation analyzer with an
oscilloscope to the antenna connector
through an attenuator, and set it as;
: 1-10
HPF : OFF
LPF : 15 kHz
De-emphasis : OFF
: 1-11
Detector : (P–P)/2
• Push [ENTER] on the PC's keyboard, to
store the value and quit the modulation
balance adjustment mode.
: 1-12 • Connect a modulation analyzer to the
antenna connector through an attenuator,
and set it as described in the "MODULATION
BALANCE" above.
: 1-13
• Connect as audio generator to the [MIC]
jack, and set it as;
: 1-14
Frequency : 1 kHz (Sine wave)
Level : 40 mVrms
: 1-15 • Connect a modulation analyzer to
the antenna connector through an
attenuator, and set it as described in the
: 1-16
"MODULATION BALANCE" above.
• Connect as audio generator to the [MIC]
: 1-17
jack, and set it as;
Frequency : 1 kHz (Sine wave)
Level : 40 mVrms
6 - 5
ADJUSTMENT
VALUE
ITEM
50 W
[Power (Hi)]
25 W
[Power (L2)]
5.0 W
[Power (L1)]
[BAL Start]
As flat as possible.
[BAL 1]
[BAL 2]
[BAL 3]
No over or under shoot.
[BAL Start]
[MOD N Start]
[MOD N L]
±2.10 ±0.05 kHz
[MOD N C]
[MOD N H]
[MOD N Start]
[MOD W Start]
[MOD W L]
[MOD W C]
±4.20 ±0.05 kHz
[MOD W H]
[MOD W Start]
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