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6. Fixture Compensation
Fixture compensation reduces the parasitic error existing between the test xture electrode
and the test head APC-7 R
compensation consists of OPEN, SHORT and LOAD compensations. For basic measurements, the
OPEN and SHORT compensations are required.
Performing SHORT Compensation
SHORT Compensation compensates for the residual impedance due to the test xture.
When you use a shorting device supplied with the 4286A (with option 004) or xture (with
option option 010), be sure to select the device of the same size as or at least closest to that of
the DUT. The dimensions for each shorting device are shown in Table 3-3.
Four shorting divices of di erent dimensions are supplied with each xture. The shorting
device that is closest to the size of the DUT should be used. The dimensions for each shorting
device are shown in Table 3-4.
connector (where the measurement accuracy is speci ed). Fixture
Figure 3-16. Fixture Compensation
Table 3-3. Dimension of Shorting Devices
Dimension (mm)
2
2
1.0
0.5
0.5
2
2
1.6
0.8
0.8
2
2
2.0
1.25
0.8
2
2
3.2
1.6
0.8
Agilent Part Number
16191-29005
16191-29006
16191-29007
16191-29008
Basic Measurement Procedures
3-15
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