scc analog input modules, e.g., ai07 or ai13

[louise]

On the SCC-AI series such as the AI-07, what is the relationship between physical channel inputs (ai0 and ai1) as seen in Measurement and Information Explorer (MAX) versus module pin numbers 1-2 and 3-4? Are pins 1-2 the same as ai0 and pins 3-4 the same as ai1 or is it the opposite? Neither the SCC Quick Start Guide nor the SCC AI Series User Guide nor the SCC Configuration Guide have this information. Thank you for any help!

[TimmTheEnchanter · Accepted solution]

Hi Louise,

Page six of the User Guide and Specifications shows a block diagram.

http://www.ni.com/pdf/manuals/371066d.pdf

On the right-hand side of this block diagram, you can see the E/M series DAQ Device inputs are AI (X) or AI (X+8).  Since these modules are signal conditioning modules, they do not actually perform a measurement, they simply condition the signal so that a measurement by the DAQ device can be taken.

AI (X) is going to be the channel you specify on the DAQ device (for instance, analog input channel zero).  If you are performing a differential measurement, the spacing must be eight apart, and AI (X+8) will be the other side of the signal that plugs into your DAQ device (in this example, analog input channel 0 + 8 = 8).

Please let me know if this helps.