NuDAQ ACL-8112 Series, User Manual

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Signal Connections
Figure 3.5 Ground source and differential input
A differential mode must be used when the signal source is differential. A
differential source means the ends of the signal are not grounded. To
avoid the danger of high voltage between the local ground of signal and
the ground of the PC system, a shorted ground path must be connected.
Figure 3.6 shows the connection of differential source.
Figure 3.6 Differential source and differential input
If your signal source is both floating and local ground, you should use the
differential mode, and the fl oating signal source should be connected as
the Figure 3.7 .
AIHn
AILn
n = 0, ..., 8
Floating
Signal
Source
To A/D Converter
High
Low
GND
Figure 3.7 Floating source and differential input
3.3 Analog Output Signal Connection