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Keysight E4981B User Manual page 103

120 hz/ 1khz/ 1mhz capacitance meter

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Preparation for Accurate Measurement (Executing Correction)
Obtaining Correction Data
Defining standard for LOAD correction (setting up LOAD reference value)
Before measuring the data for the LOAD correction, you must define the value
of the standard used in LOAD correction. You can define the standard for the
LOAD correction by using one the following parameter combinations.
Table 5-1
Definition parameters of the standard for LOAD correction
Defining parameters when using a resistance standard
When using a resistance standard (a standard that has been valued in the R-X
format) as the standard for LOAD correction, you must convert it to the Cs-Rs
format because the E4981B does not allow you to enter a value directly in the
R-X format as the definition value. The conversion expression is given below.
Equation 5-1
Conversion expression for a standard valued in the R-X format
Rs
Cs
where f denotes the measurement frequency.
Definition procedure
The procedure to define the standard value for the LOAD correction is
described below.
Step 1.
Press the [Meas Setup] key.
Step 2.
Press the CORRECTION softkey.
Step 3.
Use the cursor keys to select the LOAD Cp-D field.
Step 4.
Press the appropriate softkey (Cp-.../Cs-...) to select the primary parameter.
Step 5.
Press the appropriate softkey to select the secondary parameter.
Step 6.
Use the cursor keys to select the REF A/B field.
Step 7.
Use the entry keys to enter the reference value for load.
Keysight E4981B 120 Hz/1 kHz/1 MHz Capacitance Meter
Primary parameter
Cp
Cs
=
R
1
=
- - - - - - - - -
2fX
Secondary parameter
D, Q, G, Rp
D, Q, Rs
103

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E4981b/001E4981b/002