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2.3.
Zeroing the meter
Zeroing the instrument gets better accuracy for impedance
measurements. The purpose of this procedure is to reduce the
parasitic effect of the test fixture.
Z
M
is the total impedance measured on the device under test (DUT)
by a test fixture which has some parasitic impedance.
Z
M
= (
Rs
+ j
ω
Ls
) + ((
Go
+j
ω
Co
)-1 ||
Z
DUT
)
Z
DUT
is the target impedance user wants to measure. It is necessary
to use the zeroing process to cancel the effect of
Rs+
j
ω
Ls
and
Go+
j
ω
Co
.
Ex. Operation for open and
short calibration with TL-21
Ex. Operation for open and short
calibration with .TL-22
Open Cal.
Short Cal.
Open Cal.
Short Cal.
Summary of Contents for DE-5000
Page 14: ...6 1 3 Equivalent circuit...
