Calibrating For Non-Coaxial Devices (Es Analyzers Only); Trl Error Correction - Agilent Technologies 8753ET User Manual

Calibrating for Increased Measurement Accuracy

Calibrating for Non-Coaxial Devices (ES Analyzers Only)

Calibrating for Non-Coaxial Devices (ES Analyzers Only)

The analyzer has the capability of making calibrations using the TRL*/LRM* method. TRL* and LRM* are
implementations of the thru-reflect-line and line-reflect-match calibrations, modified for the three-sampler
receiver architecture in the analyzer.

TRL Error Correction

Create a User-Defined TRL Calibration Kit
In order to use the TRL 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 TRL (THRU, REFLECT, LINE)
standards. This example TRL kit contains the following:
• zero length THRU
• "flush" short for the REFLECT standard (0 second offset)
• 50 ohm transmission line with 80 ps of offset delay for the LINE
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
SPECIFY OFFSET
Enter a frequency greater than the maximum frequency range of the analyzer. For example, press
. Then, press
G/n
STD OFFSET DONE
6. For the purposes of this example, change the name of the standard by pressing
modifying the name to "LINE."
7. When the title area shows the new label, press:
Assign the Standards to the Various TRL Classes
6-50
DEFINE STANDARD
MODIFY
. (In this example, the
1 x1
SPECIFY OFFSET
STD DONE (DEFINED)
4 x1
DELAY/THRU
0
OFFSET DELAY
x1
6
DELAY/THRU
.08
OFFSET DELAY
.
DONE
standard is a
REFLECT
OFFSET DELAY
MODIFY STD DEFINITION
x1
STD OFFSET DONE
MODIFY STD DEFINITION
G/n
MAXIMUM FREQUENCY
STD DONE (DEFINED)
.)
SHORT
0
10
and
LABEL STD
.