How to set the point interval in Tektronix TDS220?

I am programming a program by LabVIEW which read and control a Tektronix TDS 220 through serial port. When I need to specify the data points into steps of 6.25E-5(s), I used the command "WFMPre:XINcr 6.25E-5" as the programmer manual points out. But the sampling interval still keeping as it was, not changed. I want to know which command can specify the interval in time domain? Thanks!

Please check the other thread that you posted to for a response.
Thanks.
A.S.
Anu Saha
Academic Product Marketing Engineer
National Instruments

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Solved!
Go to Solution.

Another question is in continuous mode, NI DAQmx uses Samples per channel to determine the buffer size. But according to the website you specified, it says if the acquisition is continuous (sample mode on the DAQmx Timing.vi is set to Continuous Samples), NI-DAQmx will allocate a buffer according to the following table. And for sample rate between 100 - 10,000 S/s, the buffer size is 10 kS. So if I set the sample rate to be 5000 S/s, and set the Samples per channel to be 20000, then what exactly the buffer size is? 20 kS or 10 kS?
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The attached file is the capture of my diagram. Thanks.
Attachments:
Capture.PNG ‏56 KB

How to set the out point beyond 9.95 seconds???

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Hi,
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Message was edited by: BobHarris

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How to set custmer master block for posting & how to set the status .....

< MODERATOR: Message locked. Please read the [Rules of Engagement|https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/rulesofEngagement] before posting next time. Use an appropriate subject in your message thread. >
Hi ...
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