Matched Adapters - HP 8753E User Manual

With this method, you use two precision matched adapters which are "equal. n lb be equal,
the adapters must have the same match, ZO, insertion loss, and electrical delay. The adapters
in most HP calibration kits have matched electrical length, even if the physical lengths appear
different.
Figure 5-15. Calibrating for Noninsertable Devices
1. Perform a transmission calibration using the first adapter.
2. Remove adapter A, and place adapter B on port 2. Adapter B becomes the effective test
port.
3. Perform a reflection calibration.
4. Measure the test device with adapter B in place.
The errors remaining after calibration with this method are equal to the differences between
the two adapters that are used.
6 4 6 Optimizing Measurement Results
NON-INSERTABLE DEWCE
ADAPTER A
2 REFLECTION CAL USING
ADAPTERS MUST BE EQJAl
3. MEASURE DUT USING
ADAPTER 6.