How do I caculate the buffer size if I want to generate the continuous pattern output at 13.56MH?

[bluesky2000]

I tried to generate 13.56MHZ pattern output. I modified the sample code. It had a 100843 error if I only modified frequency to 13.56MHZ. I have to modified buffer size (number of updates) to 102400. I think we can caculate the exactly buffer size it needs. but I don't know. Please tell me if some body knows. Thanks.

[Tim_Ousley]

I can't find any info on error 100843. Did it have a description with the error? Which card are you using to output at 13.56 MHz? Are you generating continuously or only a finite buffer?

[bluesky2000]

I use PCI 6534 and generating output continuously.