custom square wave duty cycle in signal express

[awatkins88]

Hey everyone,
  I am using an USB X Series Multifunctional DAQ Model 6361, with labview signal express 11 on windows7 (version 9.3.5) and I am trying to figure out if i can change the duty cycle of a square wave.  I need to have one period be at 75% duty cycle and another 25% or something along these lines.
thanks!
Adam 

[James-D]

Hi Adam,

I believe another Applications Engineer has corresponded with you concerning this issue already. If you are looking to generate a truly custom square wave where the duty cycle changes from one period to the next then you will need LabVIEW as this functionality is not supported in SignalExpress. 

Using the Analog Output along with the Create Analog Signals options will allow you to specify one fixed duty cycle for your square wave, but this will remain constant throughout the generation. 

Regards,

[awatkins88]

Yes I am currently in contact with a NI support engineer about this topic.  I will get more details concerning this issue via email support.