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Chapter 4 Calibration and Adjustment
-8 dB Range Flatness Verification
4
4
-8 dB Range Flatness Verification
This procedure checks the high frequency ac amplitude flatness on the
-8dB attenuator range. This also checks flatness for all other ranges
excluding the -24 dB and 0 dB attenuator ranges.
1 Connect a precision AC Voltmeter to measure the output amplitude of
channel 1 as shown below. Connect the BNC cable to the Wide Band
input of the Fluke 5790A.
Note If you are using substitute test equipment, be sure the input impedance
is 50 Measurement quality will be directly related to the accuracy of
the 50 load used.
2 Set the precision AC Voltmeter to “Medium, Medium” Digital Filter and
Filter Restart configuration.
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