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We appreciate your patience as we improve our online experience.
10-04-2012 03:46 PM
Hello everybody,
I'm a beginner with LabView, so maybe my problem is very easy to fix.
I need to generate a digital output using a USB-6501. This TTL signal will then be used as switch for a device. Basically I need the digital output to be continuously at high TTL level until a user activated start is given. Then the digital output must stay at low TTL level until another user activated stop is given.
Does somebody have any suggestion of how to do this? I haven't managed so far to get anything different from a TTL high level from my usb 6501.
Many thanks.
Solved! Go to Solution.
10-05-2012 11:54 AM
10-05-2012 03:22 PM
the DO of your DAQ is an "open collector", tie a pullup 4.7Kohm to the DO and connect the other end of it to the 5Vdc output of the DAQ. in your vi, supply a lo(F) to it and you will see a lo ttl ouput, supply a hi(T) and it will pull up to the 5Vdc output.
10-05-2012 04:40 PM
Many thanks. That helped a lot.
10-10-2012 04:25 AM
The example given is for Labview 9.0 ad above. Do you have the example for labview 8.5?
10-10-2012 11:20 AM - edited 10-10-2012 11:22 AM
There you go!
05-18-2017 09:12 AM
Here is how you would have it output continuously a 1 second TTL on a device like a 6508.