BK Precision 885 Manual De Instrucciones página 33

3-Terminal uses coaxial cable to reduce the effect of the
parasitic capacitor (Figure 3.2). The shield of the coaxial cable
should connect to guard of the instrument to increase the
measurement range up to 10M.
H
CUR
H
POT
L
POT
L
CUR
(a) CONNECTION
1m 10m 100m 1
(c) TYPICAL IMPEDANCE MEASUREMENT RANGE(£[)
 4-Terminal (4T)
4-Terminal connection reduces the effect of the test lead
DUT
10
A
V
(d) 2T CONNECTION WITH SHILDING
A
V
(b) BLOCK DIAGRAM
3T
100 1K 10K 100K 1M
Figure 3.2
30
R
o L
o
Co
R L
o o
10M
DUT
DUT
Co does n't
effec t
meas urement
res ult