Zero Set

The zero set test verifies that a minimal amount of residual offset error is present after zeroing has been performed. The offset error is caused by contamination from several sources including the noise of the UUT itself. Zero set is the difference between the power level indicated by the UUT, after executing zeroing, and the true zero power. Ideally this difference should be zero.

Required Test Equipment

Instrument Recommended product Alternative product N8481A, 8481A, N8482A, 8482A,
N8481H,
N8482H,
N8481B,
N8482B,
N8486AR,
N8486AQ[1]		 N8485A, 8485A, 8485D[1] 8487A,
N8487A, N8488A[1]		 E9304A, E9304A Opt H18
Meter
Power Meter N1914B N1914A
E4419B
N1912A		 X X X X
Attenuator
30 dB Attenuator 11708A -   X
(8485D only)		    
Adapters
3.5 mm (f) to Type-N (m) 08485-60005 -   X    
2.4 mm (f) to Type-N (m) 08487-60001 -     X  

[1] Include all the supported power sensor options in this calibration application.

Zero Set Test Setup

For all UUT, except N8486AR and N8486AQ:




For UUT N8486AR and N8486AQ:




Power Meter and Power Sensor Calibration (Channel A)

For all UUT, except 8485D, N8486AR, and N8486AQ:




For UUT 8485D:




For UUT N8486AR and N8486AQ:




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