Gain Measurement Uncertainty
The Noise Figure Analyzer
uses internal IF attenuator values for measuring gain. The test comprises
of an internal IF attenuator calibration. Using an external 50 MHz CW
The analyzer only uses a range of 40 dB for any given measurement from –20 dB to >+40 dB within the available 0 - 70 dB IF attenuator range. Therefore, the actual Instrumentation Uncertainty is calculated as the maximum peak to peak error over any 40 dB range within the available 0 - 70 dB IF attenuator range. The 30 available ranges are all tested for the maximum and minimum Peak to Peak values within their respective 40 dB window. The 30 peak to peak values are then compared and the worst case error is reported as the Instrumentation Uncertainty error.
Please see main Required Test Equipment table for allowed substitutions
Gain Measurement Uncertainty Test Setup: