How to set the point interval in Tektronix TDS220?

[yjiang]

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!

[A.S.]

Hello,
I am not sure why you are getting this issue. It is something you should consult Tektronix with. We have instrument drivers form LabVIEW that you can use. Check out the following link:
http://search.ni.com/query.html?col=alldocs&layout=IDNet&qp=contenttype:instrumentdriver&qt="tds+220"

They are prebuilt drivers that will take care of all the low level commands so you don't have to individually send them to the instrument. I would recommend taking a look at that. But as far as the programming commands and methods you are using are concerned, I'm afraid Tektronix may be a better source to query.

Hope the Instrument Drivers help.

A.S.