What is the Vsup pin and how to connect to NI 9932 backshell?

[calico_cat]

I am using the NI 9474 with the NI 9932 backshell connector it came with. I have the EE skills of a rock, so I apologize for these elementary questions:

What is the Vsup pin, and what does the "sup" stand for?

I'm trying to connect LED's to the NI 9474 (I know there are some on the module already; I would like to try some store-bought ones). Does anyone know how do I go about this?

Thanks in advance.

[bstreiff · Accepted solution]

The 9474 requires an external 5-30 VDC power supply; this is what connects to Vsup. The 'sup' stands for 'supply'.

• NI 9472/74 Operating Instructions and Specifications

[calico_cat]

Thanks. I had been staring at that manual for awhile, but things just clicked now. Oh well, that's a Monday for you.