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3-10
3-6 TX ADJUSTMENTS
• TX adjustment screen
RF-A UNIT
RF-A UNIT
MAIN UNIT
ADJUSTMENT
OPERATION
ADJUSTMENT
ITEM/POINT
VALUE
-PREPARATION-
1
1) Connect an RF power meter to the [ANT1] connector.
2) Push [F-4] (TX) to enter the TX adjustment menu.
3) Push [F-1] (Power).
• “POWER HF PRESET” is displayed.
–
Push [F-4].
[ POWER HF PRE-
SET]
2
1) Set R983 (MAIN UNIT) to the center position.
2) Push [F-7].
• “POWER 50M PRESET” is displayed.
R983
(MAIN UNIT)
Center position
[ POWER 50M
PRESET]
3
1) Set R985 (MAIN UNIT) to the center position.
2) Push [F-7].
• “TX POWER SET” is displayed.
R985
(MAIN UNIT)
Center position
4
• Push [F-7].
• “TX PEAK SET” is displayed.
[TX POWER SET]
Push [F-7].
[TX PEAK SET]
5
1) Trim the coils and capacitor to adjust the TX output power.
2) Push [F-7].
• “Residual AM” is displayed.
L1071, C1102, L1112
(MAIN UNIT)
(Repeatedly)
Maximum TX
output power
[RESIDUAL AM]
6
• Connect an Audio Generator to the MIC input [MIC], and then
set it as:
• Frequency:
1.0 kHz
• Level:
10 mVrms
–
–
7
• Rotate C1102 to adjust the TX output power.
C1102
(MAIN UNIT)
Maximum TX
output power
8
• Push [F-7].
• “TX Total Gain” is displayed.
–
Push [F-7].
[TX TOTAL GAIN]
9
• Connect an Audio Generator to the MIC input [MIC], and
then set it as:
• Frequency:
1.5 kHz
• Level:
10 mVrms
–
–
10 • Rotate R1074 to adjust the TX output power.
R1074
(MAIN UNIT)
100 W
11 • Push [F-7].
• “POWER HF 0W” is displayed.
–
Push [F-7].
TX POWER SET
(HF)
-PREPARATION-
12 1) Connect an Audio Generator to the MIC input [MIC], and
then set it as:
• Frequency:
1.5 kHz
• Level:
10 mVrms
2) Push [F-7].
• “POWER HF 5W” is displayed.
[POWER HF/50M 0W]
–