HP HP 8753E, User Manual, Page: 268 / 699

Adapters
With this method, you use two precision matched adapters which are “equal. lb be equal,
the adapters must have the same match,
insertion loss, and electrical delay. The adapters
in most HP calibration kits have matched electrical length, even if the physical lengths appear
different.
NON-INSERTABLE
CAL USING
ADAPTER A
2 REFLECTION CAL USING
LENGTH OF
ADAPTERS MUST BE
3. MEASURE USING
ADAPTER
Figure 5-15. Calibrating for Noninsertable Devices
use this method, refer to Figure 5-15 and perform the following steps:
1. Perform a transmission calibration using the 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.
646 Optimizing Measurement Results