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(+)
(+)
9 M
900 k
100 k
(+)
(–)
GND
U
iso
Isolation
Barrier
U
iso
U
diff
10 * U
diff
(–)
(–)
GND
U
iso
Non-isolated
system
Figure 15.5:
Isolated single
-
ended or Isolated unbalanced differential amplifier
with passive probe
l
Also referred to as
unbalanced
,
isolated
or
unbalanced differential
amplifier with probe
l
None of the inputs are connected to ground
l
The positive (system) input accepts ten times the input voltage of the
amplifier
l
The negative input has NOT CHANGED AT ALL
l
The measurement range is increased from + to
-
inputs,
BUT the isolation voltage from (
-
) to ground remains unchanged
l
Example is the GEN DAQ Basic XT Iso card with external Isolated
passive probe
l
The probes used need compensation. The compensation range needs to
match the input amplifier's capacitance range
GEN3t
I3995-3.1 en HBM: public
383
Содержание GEN3t
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