2-12
Making Mixer Measurements
Measurement Considerations
Once completed, the R channel should display 0 dBm. Changing power ranges will require a recalibration
of the R channel.
Power Meter Calibration
Mixer transmission measurements are generally configured as follows:
measured output power (Watts) / set input power (Watts)
OR
measured output power (dBm) set input power (dBm)
For this reason, the set input power must be accurately controlled in order to ensure measurement accuracy.
The amplitude variation of the analyzer is specified at 1 dB over any given source frequency. This may give
a maximum 2 dB error for a mixer transmission test setup: 1 dB for the source over the IF range during
measurement and 1 dB over the RF range during measurement.
Higher measurement accuracy may be obtained through the use of power meter calibration. You can use
power meter calibration to correct for power offsets, losses, and flatness variations occurring between the
analyzer source and the input to the mixer under test. Refer to the power meter documentation for its
calibration procedures.
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