Downconverter VCO Level Adjustment

(M9391A)

This adjustment records the amplitude (power vs. frequency) of the VCO used in the field alignment circuit. A Pairing Cal will be performed when the adjustment is finished.

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

Required Test Equipment

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
  1. Refer to the main required equipment list for a list of available adapters and cables.
  2. Refer to the main required equipment list for alternative models.
  3. 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.

Connections and Setup Procedures