Downconverter Conversion Gain Adjustment

(M9391A)

This adjustment provides an absolute measurement of all the filter responses in the RF path.

During this adjustment, the lights of the PXIe signal generator will not be on even though it is running.

Test Equipment¹	Recommended Models²
Signal generator	M9381A Opt 1EA, F06
Power meter	N1914A³
Power sensor	E9304A Opt H20
Power splitter	11667B
Frequency reference module	M9300A
Refer to the main required equipment list for a list of available adapters and cables. Refer to the main required equipment list for alternative models. N1914A power meters with serial number prior to MY53040007 require Service Note N1914A-07 which fixes a power supply ground loop. The ground loop injects noise into the measurement circuits which can cause unstable measurements at low (-30 dBm) power levels.