Display Scale Fidelity Troubleshooting

If this test fails at mixer power levels greater than -25 dBm, suspect the A2 Analog IF Assembly (gain compression), or possibly the A3 Digital IF Assembly. Failures at input power levels of less than -25 dBm may be caused by the A3 Digital IF Assembly (ADC).

This test might fail due to incorrect calibration data of the 8494 and 8496 step attenuators. Make sure you have entered the calibration data for the step attenuators that you're using. Please refer to the Enter Equipment Calibration Data section in the TME help for details on how to enter this data. You must enter the data for the following columns to obtain valid results: Attn(dB), Uncert(dB), and ReflSize.