Lrm Error Correction; Create A User-Defined Lrm Calibration Kit - Agilent Technologies 8719ES User Manual

Calibrating for Increased Measurement Accuracy

LRM Error Correction

LRM Error Correction

Create a User-Defined LRM Calibration Kit

In order to use the LRM technique, the calibration standards characteristics must be
entered into the analyzer's user defined calibration kit.
The following steps show you how to define a calibration kit to utilize a set of LRM (LINE,
REFLECT, MATCH) standards. This example LRM kit contains the following:
• zero length LINE
• "flush" short for the REFLECT standard (0 second offset)
• 50 ohm termination for the MATCH (infinite length line)
LRM with a zero length line is sometimes referred to as TRM (THRU,
NOTE
REFLECT, MATCH).
Modify the Standard Definitions
1. Press the following keys to start modifying the standard definitions:
Preset Cal
CAL KIT
2. To select a short, press
SHORT.)
3. Press the following keys:
SHORT MODIFY STD DEFINITION
x1
STD OFFSET DONE
4. To define the THRU/LINE standard, press:
DEFINE STANDARD
SPECIFY OFFSET
STD DONE (DEFINED)
5. To define the LINE/MATCH standard, press:
DEFINE STANDARD
6. For the purposes of this example, change the name of the standard by pressing
MODIFY STD DEFINITION
and then modify the name to "MATCH".
7. When the title area shows the new label, press:
DONE STD DONE (DEFINED)
6-54
MODIFY DEFINE STANDARD
. (In this example, the REFLECT standard is a
1 x1
SPECIFY OFFSET OFFSET DELAY
STD DONE (DEFINED)
4 x1
DELAY/THRU
0
OFFSET DELAY
3 x1
LOAD
LABEL STD
MODIFY STD DEFINITION
x1
STD OFFSET DONE
, if a previous title exists,
ERASE TITLE
0