Fluke 6060B Instruction Manual page 141

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e. Connect the UUT RF OUTPUT connector to the Modulation Analyzer
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f.
g.
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h. Replace the AM Depth adjustment access screw.
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5. RF Level Adjustment
TEST EQUIPMENT
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Power Meter and Sensor
REMARKS
R
The uut must be operated at room temperature
plate covers in place before continuing with this adjustment procedure.
D
This adjustment is required if any of the following events occur:
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The Output Assembly, A2A4, or the Attenuator, A2A5 has been replaced.
The AM Depth adjustment is made.
a
The LEVEL DAC or any associated components are replaced.
The RF level adjustment has been inadvertently changed or shifted.
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This adjustment directly affects the output level and should not be adjusted
Indiscriminately.
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PROCEDURE
With the UUT programmed to +9 dBm, adjust the RF Level Adjustment, R3 1 1 , for +9-
dBm output as measured with the Power Meter.
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a. Program the UUT to [RCL] [9][8], then program the UUT to 350 MHz, +9
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b. Zero the Power Meter.
c.
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d. Connect the Power Sensor to the UUT RF connector.
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e. Adjust RF Level Adjustment, R3 1 1, for a reading of exactly +9 dBm on the
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input.
Program the Modulation Analyzer to measure A M + Peak, in a 0.05-kHz to
1 5-kHz bandwidth.
Alternately measure + PEAK and - PEAK and adjust the AM Depth
Adjustment, R42 1, until the readings are symmetrical, about 90%.
CAUTION
dBm, and turn all modulation OFF.
Remove the RF Level Adjustment access screw from the bottom module
plate cover.
Power Meter.
at least one hour with the module
for
MAINTENANCE
CALIBRATION ADJUSTMENTS
4C -9