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Chapter 4 Calibration Procedures
+20 dB Range Flatness Verification
4
+20 dB Range Flatness Verification
This procedure checks the high frequency ac amplitude flatness above
100 kHz on the +20 dB attenuator range.
1 Connect the power meter to measure the output voltage of the
instrument as shown below.
2 Set the power meter reference level to equal to the calculated
100kHz_20dB_offset value. This sets the power meter to directly read the
flatness error specification. 100kHz_20dB_offset is calculated on the
Amplitude and Flatness Verification Worksheet.
Caution Most power meters will require an attenuator or special power head to
measure the +20 dB output.
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