Lrm Error Correction; Create A User-Defined Lrm Calibration Kit - Agilent Technologies 8753ET User Manual

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)
NOTE LRM with a zero length line is sometimes referred to as TRM (THRU, 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
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
then modify the name to "MATCH".
7. When the title area shows the new label, press:
DONE STD DONE (DEFINED)
MODIFY DEFINE STANDARD
. (In this example, the REFLECT standard is a SHORT.)
1 x1
SPECIFY OFFSET
STD DONE (DEFINED)
4 x1
DELAY/THRU
OFFSET DELAY
3 x1
LOAD
LABEL STD
Calibrating for Increased Measurement Accuracy
OFFSET DELAY
MODIFY STD DEFINITION
0 x1
STD OFFSET DONE
, if a previous title exists, and
ERASE TITLE
LRM Error Correction
0
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