Agilent Technologies 8719D, User Manual

Page: 242 / 673

Modifying Calibration Kit Standards
Hewlett-Packard strongly recommends that you read application note
before to view or modify standard definitions. The part number of
this application note is 5956-4352.
Although the application note is written for the HP 8510 family of network
analyzers, it also applies to the HP
Numerical data for most Hewlett-Packard calibration kits is provided in the
calibration kit manuals.
The following section provides a summary of the information in the application note,
as well as HP menu-specific information. For a detailed description of the
menus and located in this section, as well as information about when user-defined
calibration kits should be used, refer to Chapter 6, “Application and Operation Concepts.”
The following are definitions of terms:
n
A “standard” (represented by a number is a specific, physical device used
to determine systematic errors. For example, standard 1 is a short in the 3.5 mm calibration
kit.
n
A standard “type” is one of five basic types that the form or structure of the model to
be used with that standard (short, open, load, and arbitrary impedance); standard
1 is of the type short in the 3.5 mm calibration kit.
n
Standard “coefficients” are numerical characteristics of the standards used in the model
selected. For example, the offset delay of the short is 32 ps in the 3.5 mm calibration kit.
n
A standard “class” is a grouping of one or more standards that determines which of the eight
standards are used at each step of the calibration. For example, standard number 2 makes up
the reflection class.
The following steps are used to modify or user kit standard models, contained in the
analyzer memory. It is not possible to alter the built-in calibration kits; all modifications will be
saved in the user kit.
1. To modify a cal kit, select the kit to be modified. This is not necessary for
a new kit.
2. the standards For each standard, which “type” of standard it is and its
electrical characteristics
3. Specify the class where the standard is to be assigned.
4. Store the modified kit.
Optimizing Measurement Results