Perform The Lrm Calibration - Agilent Technologies 8753ET User Manual

Calibrating for Increased Measurement Accuracy
LRM Error Correction
Label the Calibration Kit
18.Press
LABEL KIT
"LRM KIT1" and press
19.To save the newly defined kit into nonvolatile memory, press:
KIT DONE (MODIFIED)

Perform the LRM Calibration

1. You must have a LRM calibration kit defined and saved in the USER KIT, as shown in
"Modifying Calibration Kits" on page
This must be done before performing the following sequence.
NOTE
2. Press
Cal
CAL KIT
CALIBRATE MENU TRL*/LRM* 2-PORT
3. To measure the "LRM THRU," connect the "zero length" transmission line between the
two test ports.
4. To make the necessary four measurements, press:
THRU THRU
5. To measure the "LRM SHORT," connect the short to PORT 1, and press:
S11 REFL: SHORT
6. Connect the short to PORT 2, and press:
S22 REFL: SHORT
NOTE If loads can be connected to both port 1 and port 2 simultaneously, then the
following LRM load measurement can be performed using the
DO BOTH FWD+REV
7. To measure the "LRM LOAD," disconnect the short and connect the LRM load to
PORT1.
8. Press
LINE/MATCH
displayed trace settles, press the softkey corresponding to the load used. If a sliding
load is used, press
press
SLIDE IS SET
9. When all the appropriate load measurements are complete, the load data is measured
and the
LN/MATCH1 LOAD
10.Connect the load to PORT 2 and press
11.Repeat the previous LRM load measurement steps for PORT 2.
6-56
and create a label up to 8 characters long. For this example, enter
.
DONE
SAVE USER KIT
7-57.
SELECT CAL KIT
softkey.
LN/MATCH1 LOAD
to access the Sliding Load menu. Position the slide and
SLIDING
.
softkey label is underlined.
LN/MATCH2 LOAD
USER KIT RETURN
.
to access the No Loads menu. When the
.
RETURN