B+K precision 885, Instruction Manual, Page: 48 / 52

H
CUR
H
POT
L
CUR
L
POT
Zdut
C
o
R
s
L
s
G
o
Z
m
Redundant
Impedance
(Z
s
)
Parastic
Conductance
(Y
o
)
Parastic of the Test Fixture
(a) Parastic Effect of the Test Fixture
H
CUR
H
POT
L
CUR
L
POT
C
o
R
s
L
s
G
o
(b) OPEN Measurement
Y
o
OPEN
Y
o
= G
o
+ j£sC
o
1
(R
s
+ j£s<< )
G
o
+j£sC
o
H
CUR
H
POT
L
CUR
L
POT
C
o
R
s
L
s
G
o
(c) SHORT Measurement
Z
s
SHORT
Z
s
= R
s
+ j£sL
s
Figure 3.7
46