control 8 channels, with microsecond precision, outputs only

[EESteve1992]

P.S.  I found it easier to reference the digital counter pulse instead of an analog input sample clock, both are capable of a 1MHz frequency so this should not be a major factor correct?

[Great_Britton]

Hey,

Your architecture is actually pretty good, the only problem is that you need to :have one channel for all lines" selected, and you should be writing a 1D array of U8's to a digital write, one channel, multiple samples. That means you should also make your empty array of U8's going into the for-loop 1-dimensional.

[EESteve1992]

Wow, The scope readings are matching up perfectly now! my only concern now is running out of available buffer space.  The PCI 6220 has room for 2047 samples according to the spec sheet, approximately how many rows of data could I fit with this much room?

Thank you very much for your patience in walking me through this build, you're the kind of friendly knowledgeable engineer I hope to be myself one day!

[Great_Britton]

Hey,

If each row of data we're sending is 8 samples, and we can hold 2047 samples, then we can probably send about 255 rows before we run out of buffer space. One way we can get around this limit would be to write some of our samples, then start the task so that the device begins emptying, and then write more to the buffer after the task has been running for a little bit, but before the buffer is empty.

An easy way to do this would be to go through a time delay after the task starts, and then write again.

[EESteve1992]

Hello Britton,

I am creating a poster to present at a symposium which will highlight the key points of my program, because you were integral in helping me create the digital aspect of this program I would like to include you as a reference on my poster, I just need your permission to do so and your last name if possible.

[mikeporter]

What symposium?

Mike...

[EESteve1992]

Susquehanna Valley Undergraduate Research Symposium on August 5th, Taking place at the Henry Hood Research Center at Geisinger Hospital in Danville, Pennsylvania.  

[billko]

Holy Cow, I used to live in Tunkhannock, PA and used the Geisinger facilities all the time.  They are top-notch, I can tell you.

[Great_Britton]

Hey,

Sure, thanks