User`s guide

6-53
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:
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