Instruction manual

Chapter 6 117
Calibration and Compensation
Calibration and Compensation Functions
6. Calibration and
Compensation
Calibration reference plane and required calibration and
compensation
Actual measurement is performed with the desired combinations of calibration and
compensation functions given in
Table 6-1 on page 116. Basically, either method A or B
shown in Table 6-2 is selected, depending on the position of the calibration reference plane.
NOTE No calibration or compensation other than open/short/load calibration is required when the
DUT connection terminal is used as a calibration reference plane (B in Table 6-2).
*1. These calibration data can normally be used to measure DC resistance (Rdc). If required, a dedicated standard can
be prepared to perform a separate DC open/short/load calibration to obtain data for measuring DC resistance.
*2. Included in the “Agilent 16195B 7-mm calibration kit.”
Table 6-2 Calibration reference plane and required calibration and compensation
Calibration reference
plane
Required calibration and
compensation
Position and method
A. Coaxial terminal of test
head
*1
Open/short/load calibration For this calibration, connect a coaxial
compensation kit
*2
to the test head
coaxial terminal (used as a calibration
reference plane).
low-loss capacitor calibration (only
when high-accuracy high-Q
measurement or low dissipation factor
calibration is required at about 1 GHz
or more)
For this calibration, connect a low-loss
capacitor to the calibration reference
plane.
*3
Port extension compensation
(fixture selection)
Enter the electrical length data from the
calibration reference plane through to
the sample connection plane into the
Agilent 4287A.
*4
Open/short compensation For this compensation, keep the DUT
connection terminal open or shorted
out.
B. DUT connection
terminal
Open/short/load calibration For this calibration, connect a working
standard
*5
to the DUT connection
terminal (used as a calibration reference
plane).
*1. Indicates the 3.5-mm terminal of the test head or one equipped with an adapter.
*2. Includes Agilent 16195B 7-mm calibration kit.
*3. Since the low-loss capacitor is designed as a 7-mm type capacitor, calibration is possible only when the calibration
reference plane uses a 7-mm connector.
*4. When you use a dedicated test fixture with a registered electrical length, you simply have to select the fixture
model number.
*5. A reference device valued at the same contour as the DUT. Option 004 (working standard set) or similar can be
used.