Hi,
I am trying to output two digital pulse trains to act as a TTL signal controlling two lasers.
To do this, I first generate a hardware counter on Dev1/ctr0 at a user defined frequency. This counter then serves as the source (Dev1/Ctr0InternalOutput) for the Digital Output on Dev1/port0/0:7 which uses a user defined 1-D waveform input.
The desired output would be:
Dev1/port0/0 --> on off on off on off ... at the desired ctr0 frequency
Dev1/port0/1 --> off on off on off on ...
However on my current setup (NI PCIe-6351 + BNC-2111) I don't have direct access to port0 thus I tried outputting the digital signal on Dev1/port1. This gives me an error 201062, indicating port0 does not support hardware timed digital output. (http://forums.ni.com/t5/Multifunction-DAQ/Error-201062-when-performing-continuous-reading-of-a-Digital/td-p/534789)
My question is: How would I gain access to the port0 and connect to a BNC connector, via extra hardware or otherwise?
and if this is not possible,
How would I recreate the above using either an analogue output or using more than one counter (Ctr) outputs?
Sorry for the length of the message.
Any help would be much appreciated.