Agilent Technologies 8753ET User Manual page 312

Calibrating for Increased Measurement Accuracy
Frequency Response and Isolation Error Corrections
8. To measure the standard, when the displayed trace has settled, press:
The analyzer displays WAIT - MEASURING CAL STANDARD during the standard measurement. The
analyzer underlines the
error coefficients.
9. Connect impedance-matched loads to PORT 1 and PORT 2, as shown in
that you would include for your device measurement.
Figure 6-5 Standard Connections for a Response and Isolation Error Correction for Transmission
Measurements
NOTE If you will be measuring highly reflective devices, such as filters, use the test device,
connected to the reference plane and terminated with a load, for the isolation standard.
10. To help remove crosstalk noise, set the analyzer as follows:
a. Press
Avg AVERAGING ON
averages than desired during the device measurement.
b. Press
Cal MORE
11. To measure the calibration standard, press:
Cal RESUME CAL SEQUENCE
12. Return the averaging to the original state of the measurement. For example, reduce the averaging factor
by at least four times or turn averaging off.
13. To compute the isolation error coefficients, press:
Cal RESUME CAL SEQUENCE
The analyzer displays the corrected data trace. The analyzer also shows the notation Cor at the left of
the screen, indicating that the correction is switched on for this channel.
6-18
softkey after it measures the calibration standard, and computes the
THRU
AVERAGING FACTOR
ALTERNATE A and B
ISOL'N STD
DONE
THRU
Figure
and enter at least four times more
to eliminate one crosstalk path.
RESP ISOL'N CAL
6-5. Include the adapters