Error Term Descriptions - Agilent Technologies 8719ET Service Manual

Error Terms

Error Term Descriptions

Error Term Descriptions
The error term descriptions in this section include the following information:
• significance of each error term
• typical results following a full 2-port error-correction
• guidelines to interpret each error term
The same description applies to both the forward (F) and reverse (R) terms. The plots
shown with each are typical of a working system following a full 2-port calibration as
performed in "Measurement Calibration Procedure" on page
The illustrations depicting the analyzer display were made using an 8722ES
NOTE
model. Other analyzer displays may appear different, depending on model
and options.
It may be helpful to define some of the terms used in the error term descriptions that
follow:
• R signal path: refers to the reference signal path. It includes the A58 M/A/D/S, A64 R
sampler, and associated semirigid coax cables.
• A input path: refers to the port 1 input path and includes the A58 M/A/D/S, A69 step
attenuator, A74 transfer switch, A61 bias tee, A62 directional coupler, A65 A sampler,
and associated semirigid coax cables.
• B input path: refers to the port 2 input path and includes the A58 M/A/D/S, A69 step
attenuator, A74 transfer switch, A60 bias tee, A63 directional coupler, A66 B sampler,
and associated semirigid coax cables.
11-10
8719ET/20ET/22ET
8719ES/20ES/22ES
RF Network Analyzers
11-4.
Service Guide