This performance verication test must be performed with the EMC analyzer set in the spectrum analyzer mode.
This test measures the displayed average noise level in both frequency bands. The EMC analyzer input is terminated in 50 . In Band 0 (9 kHz to 2.9 GHz), the test rst measures the average noise at 400 kHz and 1 MHz in zero span. The LO feedthrough is used as a frequency reference for these measurements. For the rest of Band 0 and for all of the remaining bands, the test tunes the analyzer frequency across the band, uses the marker to locate the frequency with the highest response, and then reads the average noise in zero span.
To reduce measurement uncertainty due to input attenuator switching and resolution bandwidth switching, a reference level oset is added. The CAL OUT signal is used as the amplitude reference for determining the amount of oset required. The oset is removed at the end of the test by pressing 4PRESET5.
Equipment Required
Cable, BNC, 23 cm (9 in)
Termination, 50
Adapter, Type N (m) to BNC (f)
Figure