Trace Noise Test

This test applies to the following models:

N991xA/B, N995xA:

  • Test S21 if Option 210 is installed

  • Test S12 if Option 211 is installed.

N992xA:

  • Always test S21.
  • Test S12 if Option 211 is installed.

This test measures the stability of the Source/Receiver system. Trace noise is largely caused by FM-to-AM and PM-to-AM conversions in the receivers resulting from digital noise in ADC conversions and phase lock loop stability/performance in the receiver frequency conversion and the source. Since the standard deviation can be defined as the RMS about a zero mean, trace noise can be measured as the standard deviation of S21 and S12 traces. Measurements are made at individual CW frequencies.

Test type:

performance

Related specification:

Trace Noise

Related adjustment:

none

Required Test Equipment

Test Equipment

Recommended Model
(see main equipment list for alternative models)

Rigid thru cable, Type-N

Contact support at csg.servicedesk@keysight.com for part number

Rigid thru cable, 3.5 mm

Rigid thru cable, 2.4 mm

 

Connection Setups

The following notes apply to illustrations in the FieldFox Help:

  • Only a single representative model will be shown.
  • Some illustrations may differ than those in TME.

  • For procedures that apply to multiple ports, illustrations will show the setup on only one test port.

Trace Noise Test Setup