MAtched Adapters

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.

NON-INSERTABLE DEWCE

1. TRANSMISSIOf4 CAL USING ADAPTER A

2 REFLECTION CAL USING ADAPTEP R LENGTH OF ADAPTERS MUST BE EQJAl

3. MEASURE DUT USING ADAPTER 6.

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Figure 5-15. Calibrating for Noninsertable Devices

‘Ib use this method, refer to Figure 5-15 and perform the following steps:

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

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HP 8753E manual MAtched Adapters, NON-INSERTABLE Dewce