Adapter Removal Calibration; General Theory; Noninsertable Device Configurations - Keysight Technologies 85052C User's And Service Manual

Adapter Removal Calibration

NOTE Adapter Removal calibration is NOT the most accurate calibration method for the PNA. For
information on PNA calibration methods for measuring non-insertable devices, refer to your
PNA's embedded Help system. To view PNA Help online, go to
PNA Help in the Search box.

General Theory

The following sequence describes the adapter removal method of calibration for measurement of a
noninsertable device. Although this technique does require two separate 2-Port calibrations, it remains the
only traceable method for minimizing the uncertainty in this measurement. The three precision adapters in
this calibration kit provide the parts required to make the process relatively easy.
Detailed information about the adapter removal calibration is contained in Product Note 8510-13. To
download a free copy, go to
The previous calibration sequence assumed that the device under test is insertable; it has a male connector
on one port and a female connector on the other port. Thus, the measurement system can be calibrated and
then the test device inserted without changing the system test port connectors.
However, the majority of devices used in microwave systems are noninsertable. Of interest here are devices
having either both male or both female 3.5 mm connectors on Port 1 and Port 2.

Noninsertable Device Configurations

Female to Female
If the device you are measuring has two female connectors, your setup would look like the figure below. The
female-to-female precision adapter is substituted for the DUT to accomplish this calibration.
Figure 3-31 Female-Female Device Under Test
Male to Male
If the DUT you are measuring has two male connectors, your setup would look like the figure below. The
male-to-male precision adapter is substituted for the DUT to accomplish this calibration.
85052C
www.keysight.com and enter literature number 8510-13 in the Search box.
Use, Maintenance, and Care of the Devices
Adapter Removal Calibration
www.keysight.com and type
3-27