LO Output Power Option EXM Adjustment

This adjustment applies to the following models with Option EXM:

EXA — N9010A/B/N
MXA — N9020A/B
MXA — N9021B
PXA — N9030A/B
UXA — N9040B

This adjustment adjusts the External LO Output amplitude to +16.5 dBm. In this adjustment, a power sensor is connected to the EXT MIX port. The signal analyzer is placed in External Mixing mode and the center frequency is stepped in 75 MHz increments. At each center frequency, an internal DAC is adjusted until the power meter reads +16.5 dBm, and the DAC value is saved. The center frequency is then tuned to the next frequency and the process is repeated.

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Required Test Equipment

Test Equipment	Recommended Model Number
Power meter	N1914B
Power sensor	N8485A
3.5 mm (f) to Type-N (m) (8485A adapter)	08485-60005
Adapter, 3.5 mm (m) to 3.5 mm (f)	83059C

Connection Setups

In the following setups, cables are designated as solid lines and direct connections are designated as dashed lines.

Power Meter Calibration (Channel A)

LO Output Power Setup

Occasionally, due to manufacturing tolerances, the front panel may prevent the power sensor from fully seating on the External LO Connector. If this situation occurs, a 3.5 mm (m) to 3.5 mm (f) adapter (such as the 83059C) should be used to position the power sensor further from the front panel.