Filter
Top Products
30
•
Operation Theorem
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.
AIHn
AILn
n = 0, ..., 8
Differential
Signal
Source
To A/D Converter
VG1 VG2
Vcm = VG1 - VG2
GND
Figure 4.2.3 Differential source and differential input
If your signal source is both floating and local ground, you should use the
differential mode, and the floating 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 4.2.4 Floating source and differential input
n =
0,
n =
0,