Phase Noise Performance Test

(M9393A)

Phase noise is a measure of the stability of the signal analyzer LO. Short term frequency changes in the LO are caused by thermal noise, pops, and flicker noise. These small random changes in frequency cause the LO power to be spread over a frequency spectrum. Phase noise is defined as an offset power relative to the fundamental amplitude. The amplitude difference is normalized to a 1 Hz resolution bandwidth. The measurement unit is dBc/Hz.

The phase noise measurement is essentially a noise measurement. The measurement is corrected for the logging effect of the signal analyzer, the distribution of noise, and the noise bandwidth of the resolution bandwidth filters.

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Required Test Equipment

Test Equipment1

Recommended Models2

Signal generator

PSG models
(see equipment list)

Frequency reference module

M9300A
  1. Refer to the main required equipment list for a list of available adapters and cables determined by the source ETE configuration.
  2. Refer to the main required equipment list for alternative models.

Connections and Setup Procedures