Help with USB 6501 to signla a digital exposure controller

[Thordon]

I am trying to use the NI USB 6501 to control the shutter from a Spectra-Physics Digital Exposure Controller. The shutter can be controlled using a coaxial cable with a BNC connector.  I dot not have much experience with digital outputs.  I have connected the "main pin" and ground but after that I could use some help.  I have also looked into the write digital channel vi.  Any help would be greatly appreciated.

Here is the link to the product....http://www.newport.com/Exposure-Control-Instruments-for-Large-Area-Illum/378091/1033/info.aspx

[nyc_(is_out_of_here)]

Any reason you don't want to use RS232 which is apparently on the instrument?

[Thordon]

the manual says that a the BNC connecter (J4) controls the shutter.  I believe I have it working now tho.