Hi Andrew-
Dennis is correct- the only way to create this pulse would be to run the operation in a loop and invert the output on subsequent runs. From the E Series Help (http://digital.ni.com/manuals.nsf/websearch/05A25C65C755D8DB86256FD30081687D), the rise time for digital outputs on the PCI-6032E is 1.1 nS.
I have attached a sample VI that will write to port0:line1 of the device based on a rate specified on the front panel.
EDIT: Please keep in mind (as Dennis mentioned) that this is a software-timed operation and performance will vary based on system utilization by this application and others.
Regards,
Message Edited by Tom W. on 04-21-2005 09:43 AM
Tom W
National Instruments