Agilent Technologies 8753ET User Manual

6-52
Calibrating for Increased Measurement Accuracy
Calibrating for Non-Coaxial Devices (ES Analyzers Only)
Perform the TRL Calibration
1. Press
.
2. To measure the "TRL THRU," connect the "zero length" transmission line between the two test ports.
3. To make the necessary four measurements, press .
4. To measure the "TRL SHORT," connect the short to PORT 1, and press:
5. Connect the short to PORT 2 and press .
6. To measure the "TRL LINE," disconnect the short and connect the TRL line from PORT 1 to PORT 2.
7. Press .
8. The line data is measured and the and softkey labels
are underlined.
9. To measure the "ISOLATION" class, press .
❏ You could choose not to perform the isolation measurement by pressing
.
NOTE You should perform the isolation measurement when the highest dynamic range is desired.
To perform the best isolation measurements, you should reduce the system bandwidth or
activate the averaging function.
A poorly measured isolation class can actually degrade the overall measurement
performance. If you are in doubt of the isolation measurement quality, you should omit the
isolation portion of this procedure.
NOTE If loads can be connected to both port 1 and port 2 simultaneously, then the following
measurement can be performed using the softkey.
10. Connect a load to PORT 2, and press .
11. Connect the load to PORT 1, and press .
12. You may repeat any of the previous steps. There is no requirement to go in the order of steps. When the
analyzer detects that you have made all the necessary measurements, the message line will show
PRESS 'DONE' IF FINISHED WITH CAL. Press
.
The message COMPUTING CAL COEFFICIENTS will appear, indicating that the analyzer is performing
the numerical calculations of error coefficients.
NOTE You can save or store the measurement correction to use for later measurements. Refer to
Chapter 4 , “Printing, Plotting, and Saving Measurement Results” for procedures.
13. Connect the device under test. The device S-parameters are now being measured.
Cal
CAL KIT
SELECT CAL KIT
USER KIT
RETURN
RETURN
CALIBRATE MENU
TRL*/LRM* 2-PORT
THRU THRU
S11 REFL: TRLSHORT
S22 REFL: TRLSHORT
LINE/MATCH
DO BOTH FWD+REV
LN/MATCH1 LINE
LN/MATCH2 LINE
ISOLATION
OMIT ISOLATION
DONE TRL/LRM
DO BOTH FWD+REV
REV ISOL’N ISOL’N STD
FWD ISOL’N ISOL’N STD
ISOLATION DONE
DONE TRL/LRM

Agilent Technologies 8753ET Specifications

General

Brand	Agilent Technologies
Model	8753ET
Category	Measuring Instruments
Language	English