3.5 Basic Operations
3-70 ZM2376
Measuring LOAD standard value
The LOAD standard value can be measured similarly to the normal DUT measurement.
Setting of measurement conditions
As a reference value is measured, the measurement accuracy should be as high as possible, and
the measurement variation should be small. Set the measurement signal level to 1V and the
measurement speed to SLOW or VSLO. Also, the measurement range, output impedance, trigger
delay time, and others need to be set properly.
Preparations for connecting the standard
Remove the connection circuit network between ZM2376 for the LOAD correction and DUT so
as to connect the standard and ZM2376 directly with a cable length of 0m. An additional error
should be much smaller than that of the connection circuit network for correction.
Disables OPEN correction and SHORT correction.
Connection of standard for LOAD correction.
Use a 4-terminal connection as much as possible. Otherwise, use a test fixture of 2-terminal
connection in an impedance range where the contact resistance has less impact.
Figure 3-11 Measurement of LOAD standard value
When a test fixture is used to connect the standard (part) and the LCR meter, an exact LOAD
standard value can be obtained only in lower frequencies where the additional error due to the test
fixture can be ignored. In higher frequencies, the test fixture itself generates an additional error
which needs the LOAD correction.
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