Outputting single using FT245R card

[Elvan Arcy]

My end goal is to output a pulse train through a FT245R card utilizing the D0-D3 ports. I have downloaded the drivers and managed to get the example files to run. However, when I attempt to output a simple (arbitrary) signal to the output lines in the card, I see no change to the voltage at the outputs (using both LEDs as well as an oscilloscope). MAX does recognize the card and VISA is able to communicate with it. I have attempted this through a straight up VISA write command as well as utilizing the Instrument I/O assistant in LabVIEW. I am currently at a roadblock and out of ideas and would appreciate any advice.

[LV_Pro]

It would help if you code attach the part of your code that talks to the FT245R. There are a lot of things that make a program not work, but most are hard to diagnose without seeing the code. If you can attach code, please identify what version of LabVIEW it was created in, not all of the "listeners" here have all flavors installed.

[Elvan Arcy]

The code Im trying to get functioning is a simple write command with 8 Boolean inputs. As to "flavors" I have labview 2010 sp1 on a windows XP machine, as well as the d2xx drivers installed that go with the FT245R card. The card is recognized in the labview as the VISA, and is recognized in the VISA resource name control, as well as in MAX.

[kellis.wiseman]

Good afternoon Elvan, 

When you say you downloaded the drivers, can you post the location from which you downloaded them? Also, you mentioned that you got the example files to run. Are these examples on the same site? They would be helpful to see how the device is expecting to communicate. Have you tried looking on our site for examples of how to Send Binary Data via VISA? Thanks!

~kgarrett