4.2 Simple Operation for First Time Use
4
-
7
ZA57630
■ Example of measurement connection of DUT with one line grounded
Figure 4-2 Impedance Measurement Connection Example 2 (IMPD
−EXT, Measurement of DUT
with Grounding)
If a current probe or CT is used for current detection, the impedance of a DUT with
grounding can also be measured.
■ Example of measurement connection of high-impedance DUT (micro current)
Figure 4-3 Impedance Measurement Connection Example 3 (IMPD
−EXT, Measurement of
High-Impedance DUT)
Using a current-voltage conversion amplifier for current detection enables the detection of a
micro current of nA order or pA order in magnitude, which is difficult to measure with a
shunt resistor or current probe, so a high-impedance DUT can be measured with high
sensitivity. Amplifiers such as the
CA5350
Programmable Current Amplifier
and
SA-600
Series
Wideband Current Amplifier
can be used as the current-voltage conversion amplifier. For
details on these current-voltage conversion amplifiers, contact NF Corporation or its
authorized agent.
Current probe
conversion ratio K [V/A]
i
K i
OSC / H
CUR
PORT1 / H
POT
PORT2 / L
CUR
DUT drive amplifier
DUT
Zx
10:1 probe
v
0.1v
ZA57630
Current-voltage
conversion amplifier
i
−R
F
i
OSC / H
CUR
PORT1 / H
POT
PORT2 / L
CUR
DUT drive amplifier
DUT
Zx
10:1 probe
v
0.1v
ZA57630
+
−
R
F
Содержание ZA57630
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