Sending TTL signal to STG 4008 Stimulator

[anotherabby]

Hi,

I'm trying to generate this TTL signal to trigger a STG 4008 to start stimulation.

I'm not sure how to go about it. I have access to a PXIE-6363 and SCB-68A. 

I initially planned on using the DAQmx digital outputs to send the signal, but I ran into a problem with the sample clock because I don't have access to a timing device. Is there any other way to do this? 

I appreciate any help.

Thanks,

Abby. 

[Kevin_Price · Accepted solution]

So you just need to create the lower red signal and STG 4008 will react by producing the upper black one?

If so, then this looks like a pretty straightforward counter task.  Just start with the shipping example for "Counter - Continuous Output" (or "...Finite..." if you want to generate a specific # of total pulses). 

Pulse parameters are defined in pairs, either Freq/Duty Cycle or Low Time/High Time.  Why not take this opportunity to try both and learn a little more about counters?  There's a lot of pretty neat timing-related stuff you can do once you get familiar with them.  But they *are* different enough from the other kinds of I/O that getting familiar takes some time (ha!  see what I did there?) and experience. 

So anyway your red pulse train can be specified either as:

• Freq = 10000 Hz, Duty Cycle = 0.4 (assuming default of Idle State=Low), or
• Low Time = 60e-6 sec, High Time=40e-6 sec

Try both ways and see.

-Kevin P

[anotherabby]

I won't know for sure if this works until the BNC cable comes in, but it seems like it would and I'm not getting any errors. 

Thank you!!