Contec AI-1604CI2-PCI, User Manual

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3. External Connection
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AI-1604CI2-PCI
Connection Example of Voltage Signal Source
The following figure shows an example of optional flat cable (PCA37P) connection.
Connect each input channel in CN1 and the corresponding analog ground in pairs to the signal source.
Analog Input 0..3
Analog Ground 0..3
BOARD CN1 Cable Signal Source
Figure 3.4. Connecting the Voltage Signal Source (Flat cable)
The following example connects a signal source to this product using a shielded cable such as a coaxial
cable. Use shielded cable if the distance between the signal source and this product is long or if you
want to provide better protection from noise. Connect each analog input channel in CN1 and the
corresponding analog ground to the signal source, using the core of the shielded cable and its shield
braid, respectively.
Analog Ground 0..3
Shield cable
Analog Input 0..3
BOARD CN1
Signal Source
Figure 3.5. Connecting the Voltage Signal Source (Shield cable)
CAUTION
- An input voltage signal should not exceed the maximum input voltage (relate to the analog ground).
If it exceeds the maximum voltage, this product may be damaged.
- Connect all the unused analog input channels to analog ground.
- As a long connection cable may fail to accurately input analog signals, the connection cable should
be as short as possible.
- If the connection cable receive noise, analog may not be input properly. Route the connection
cable as far apart from noise sources as possible.