Agilent Technologies E5070B, User Manual

Page: 109 / 769

Chapter 4 103
Calibration
Checking Calibration Status
4. Cal
ibra
tion
trace.
For details on the trace status area, see “5-5. Trace Status Area” on page 48.
Acquisition status of calibration coefficient for each channel
You can check the acquisition status of the calibration coefficient for each channel with the
calibration property.
The calibration property displays the acquisition status of the calibration coefficient
between test ports for each channel in matrix format. Figure 4-2 shows an example of when
the calibration coefficients have been acquired for the full 2-port calibration between test
ports 1 and 2, the response calibration for test port 3, and the response calibration (THRU)
between test ports 4 and 3.
Figure 4-2 Example of calibration property display
NOTE The simplified full 3/4-port calibration and the simplified 3/4-port TRL calibration are not
discriminated from the normal full-port and TRL calibrations, and
F
is displayed.
Conditions for clearing already acquired calibration coefficients
In the following cases, already acquired calibration coefficients are cleared.
o Executing preset clears all calibration coefficients.
o If S parameters required to calculate the calibration coefficient for the specified
calibration type and test ports and those required for the existing calibration coefficient
overlap, executing the acquisition of the calibration coefficient (measuring necessary
data and then pressing the
Done
softkey) clears the calibration coefficient for which
necessary S parameters overlap. Taking Figure 4-2 as an example, if you acquire the
calibration coefficient of the 1-port calibration for test port 4, neither calibration
coefficient is cleared. On the other hand, if you acquire the calibration coefficient for
the full 2-port calibration between test ports 2 and 3, the calibration coefficient of the
full 2-port calibration between test ports 1 and 2 and that of the response calibration for
test port 3 are cleared.
NOTE An asterisk (*) may appear in the upper-right area of the softkey displayed when selecting
a test port. This indicates that the existing calibration coefficient will be cleared if you
select the test port and execute the acquisition of the calibration coefficient.
Procedure to turn on/off calibration property display
Follow these steps to turn on/off the calibration property display.