Alinco DX-SR9 E, Руководство по обслуживанию

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42
4) MAIN Unit Adjustment
(b) TX Adjustment
DXSR8 Power meter Oscilloscope
AF signal
generator
Linear detector
AF voltage
meter Current meter
30A
DC power
supply
Spectrum
analyzer
PTT CW key
MIC ANT
ITEM
TX Output
Power
Current Limit
100W
Power 100W
FAN MOTOR
Confirmation
LOW Power
Supper LOW
Power
UNIT
MAIN
MAIN
MAIN
Confirm
MAIN
MAIN
ADJ.SPOT
L112
L111
L105
L104
VR110
VR112
Confirm
VR119
VR120
ADJUSTING METHOD
CN103 is connected with spectrum
analyzer.
Adjust it so that the CN 103 output
becomes maximum power at a
spectrum analyzer.
CN103 is connected with CN801(PA
UNIT).
Adjust it in VR112 so that power
becomes maximum.
After adjust to 20.0±0.1 A
(It is
adjusted that the current reaches the
maximum value when the maximum
value of the current is 20A or less).
Be careful not to run much current for
short time.
Adjust to 100.0±1.0 W.
The fan must turn when the temperature
rises while transmitting.
Clatter doesn’t come out when the FAN
motor turns.
Adjust to 10.0±1.0 W.
Adjust to 1.0±0.1 W.
CONDITION
14.1000MHz
MODE : FM
1.9000MHz
MODE : FM
Mod : OFF
14.1000MHz
MODE : FM
Mod : OFF
FAN MOTOR
14.1000MHz
MODE : FM
LOW POWER
(FANC
→
0 key)
Mod : OFF
14.1000MHz
MODE : FM
SLOW POWER
(FANC
→
0 key)
Mod : OFF
ITEM
50W
Power 50W
FM
Modulation
Level
Carrier Balance
AM Wave Form
CW Carrier
TUNE Power
UNIT
MAIN
MAIN
MAIN
MAIN
MAIN
MAIN
ADJ.SPOT
VR114
VR116
VR102
VR103
VR115
VR118
VR113
ADJUSTING METHOD
Connect JP109 by soldering before
adjustment.
Adjust to 50.0±1.0 W.
Remove the solder of JP109 after
adjustment.
Adjust to 2.3±0.1 KHz/DEV
Adjust VR102 and VR103 so that the
carrier suppression is 50dB or below at
100W.
Make sure of the wave form.
The wave form becomes modulation
100%.
Make sure of the wave form. The wave
form of rise and fall should be
symmetry. The inclination is approx.
3mS. The side tone of CW is should be
heard speaker.
It is confirmed that the transmission
output is 90W or more.
The JIG (diode) is installed as the
figure.
After
｢ FUNC ｣
→
｢ . ｣
Adjust to 10.0±0.1W.
CONDITION
14.1000MHz
MODE : FM
Mod : OFF
28.1000MHz
MODE : FM
1KHz -35dBm
LPF:OFF
HPF:OFF
14.1000MHz
MODE : USB
Mod : OFF
14.1000MHz
MODE : AM
1KHz -43dBm
14.1000MHz
MODE : CW-L,
CW-U
14.1000MHz
｢ FUNC ｣ + ｢ . ｣
3 mS