Agilent Technologies 8753ET User Manual page 350

Calibrating for Increased Measurement Accuracy
LRM Error Correction
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.
14. 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"
15. Connect the device under test. The device S-parameters are now being measured.
NOTE When making measurements using the same port with uncoupled channels, the power level
for each channel must fall within the same power range setting of that single port. An error
message will be displayed if you enter two power levels that do not fall within the same
power range.
6-56
.
DONE TRL/LRM
for procedures.