Agilent Technologies 8753ET User Manual page 401

Specify Class Menu
Once a standard has been defined, it must be assigned to a standard "class." This is a
group of from one to seven standards that is required to calibrate for a single error term.
The standards within a single class can be assigned to the locations listed in
according to their standard reference numbers.
A class often consists of a single standard, but may be composed of more than one standard
if band-limited standards are used. For example, if there were two load standards − a fixed
load for low frequencies, and a sliding load for high frequencies − then that class would
have two standards.
Table 7-2 Standard Class Assignments
Calibration Kit Label: _______________________
Disk File Name: _________________________________
Class
S A
11
S B
11
S C
11
S A
22
S B
22
S C
22
Forward Transmission
Reverse Transmission
Forward Match
Reverse Match
Response
Response and Isolation
TRL thru
TRL reflect
TRL line or match
The number of standard classes required depends on the type of calibration being
performed, and is identical to the number of error terms corrected. A response calibration
requires only one class, and the standards for that class may include an open, or short, or
thru. A 1-port calibration requires three classes. A full 2-port calibration requires 10
Standard Reference Numbers
1 2 3 4
Standard
Class
5 6 7 8 Label
Operating Concepts
Modifying Calibration Kits
Table 7-2
7-63