cFP-AI-118
4
ni.com
Measuring Voltage with the cFP-AI-118
Figure 2 shows how to connect a voltage source to one channel of
the cFP-AI-118.
Figure 2.
Voltage Source without External Power Supply
Installing the Ferrite on Signal Wires
In order to suppress radiated emissions from the Compact
FieldPoint system, you must install the ferrite shipped with the
cFP-AI-118. Install the ferrite 2–3 in. from the ends of the I/O
signal wires, as shown in Figure 3.
Figure 3.
Installing the Ferrite on Signal Wires
1
Ferrite
2
cFP-CB-
x Connector Block
V+
V–
cFP-AI-11
8
Volt
a
ge
S
o
u
rce
+
–
Amplifier
1 M
Ω
Inp
u
t
Imped
a
nce
1
2
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