©
National Instruments Corp.
9
NI 9234 Operating Instructions and Specifications
Figure 3.
Connecting a Floating Signal Source to the NI 9234
The NI 9234 can also provide an IEPE excitation c
u
rrent for each
channel to meas
u
re gro
u
nd-referenced or floating IEPE sensors.
Typical IEPE sensors have a case that is electrically isolated from
the IEPE electronics, so connecting the sensor to the NI 9234
res
u
lts in a floating connection even tho
u
gh the case of the sensor
is gro
u
nded.
NI 9234
AI+
AI–
+
–
Signal
Source