PCIe-DIO6400 Users Manual (Rev 1.0)
-
10-
http://www.daqsystem.com
5. External Connection (INPUT)
DC
IN0
IN1
IN_COM0~3
EXT
POWER
[Figure 5-1. Input Port External Connection]
Ordinary noise and ground issue can occur if industry equipments operate to connect each other.
In ways to solve these issues, it use the isolated connection way that it was completely cut
electrically off. It is good example that used a photo-coupler.
As the Photo-coupler exchange a signal by the light not electrical signal, it can protect equipment
from noises and over-voltage. At this time, if board connect to external equipment and want
completely isolated connection, you should use an external power.
The above mentioned picture is a connection of an input part. If it connect external power to
IN_COM0 ~ IN_COM3 and give to minus(-) power at signal input part, it will be activated.
* 1. The input power voltage range is 5
– 24V.
