Transmit Adjustment - Icom IC-F6220D 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 OUTPUT 1 • Channel : 1-3
POWER • Transmitting
(High power)
(L2 power) 2 • Channel : 1-4
• Transmitting
(L1 power) 3 • Channel : 1-5
• Transmitting
MODULATION 1 • Set [TX MODE] to "2 (Analog 100Hz Pulse)" on the "Adjust
BALANCE Utility" screen.
-Band low-
3 • Push [ENTER] on the PC's keyboard, to enter the modulation
balance adjustment mode.
4 • Channel : 1-6
• Transmitting
-Band center- 5 • Channel : 1-7
• Transmitting
-Band high- 6 • Channel : 1-8
• Transmitting
7 • Push [ENTER] on the PC's keyboard, to store the value and
quit the modulation balance adjustment mode.
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 : 1-9
• Transmitting
-Band center- 3 • Channel : 1-10
• Transmitting
-Band high- 4 • Channel : 1-11
• 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 : 1-12
• Transmitting
-Band center- 8 • Channel : 1-13
• Transmitting
-Band high- 9 • Channel : 1-14
• 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
• Connect an RF power meter to the
antenna connector.
• Connect a modulation analyzer with an
oscilloscope to the antenna connector,
through an attenuator, and then set it as;
HPF : OFF
LPF : 15 kHz
De-emphasis : OFF
Detector : (P–P)/2
• Connect a modulation analyzer to the
antenna connector, through an attenuator,
and set it as described in the "MODULATION
BALANCE" above.
• Connect as audio generator to the [MIC]
jack, and set it as;
Frequency : 1 kHz (Sine wave)
Level : 40 mVrms
• Connect a modulation analyzer to
the antenna connector, through an
attenuator, and set it as described in the
"MODULATION BALANCE" above.
• Connect as audio generator to the [MIC]
jack, and set it as;
Frequency : 1 kHz (Sine wave)
Level : 40 mVrms
6 - 6
ADJUSTMENT
VALUE
ITEM
45 W
[Power (Hi)]
25 W
[Power (L2)]
4.5 W
[Power (L1)]
[TX MODE]
(Analog 100Hz Pulse)
[BAL Start]
Square waveform
[BAL 1]
As flat as possible.
[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]
2
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–
–
–
–
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