HP 4284A - Page 190

parallel capacitance value as the REF A value and the sp ecied D
value as the REF B value with C
p
-D function.
Note
If the REF A and REF B values are entered with the C
p
-D function,
measurements with other functions (such as the j Z j -  function) can
be performed.
Using the Pre-Measured Device for the LOAD
Even if you have no standard which has sp ecied reference values,
you can p erform a LOAD correction using a device such as a general
purpose capacitor or resistor. The pre-measured values of a device
are used for the REF A and REF B values. Follo w the pro cedure
shown in below to use a device for the LOAD standard.
1. Prepare a device, whose imp edance is as close as p ossible to the
DUT's imp edance, for the LOAD standard.
2. If the device has BNC connectors constructed in the four-terminal
pair conguration, measure the device directly, do not use a test
xture (connect it directly to the HP 4284A).
Measurement Procedure and Examples 6-21