RF Response Adjustment

This adjustment applies to the following models:

M9381A

This adjustment procedure measures the output power of the IQ modulator at several frequencies in each of eight RF filter paths. Once all frequencies in the filter path have been measured, the phase change across the band is calculated resulting in both magnitude and phase information. This information is used to adjust the filters.

Required Test Equipment

Test Equipment	Recommended Models¹
Power meter	N1914A
Power sensor	E9304A H20
50 W terminator 3 required	909D
Adapter, Type-N (f) to 3.5 mm (m)	1250-1750
100 MHz reference	M9300A

Refer to the main Required Equipment table for a list of alternative models.

Connections and Setup Procedures

Setup for Power Meter Calibration

Setup for RF Response Adjustment