Talking to TDS2000 through GPIB with Labview 4.1

[xiaoming]

Sorry to ask a question about such an ancient version of Labview, but the setup I have resurrected is from about a decade ago, runs on windows 95, and my super doesn't want me to change anything out of fear of having to re-implement quite a few things.

That aside, I am trying to request a curveform from a Tektronics TDS2000 series scope through a GPIB connection.  My GPIB Write commands all get through (fac reset, saving traces to references, etc.)  however when I request an output, I am unsure how to go about that.  I've tried wiring the error of write into the error of a GPIB Read, but the data remains blank.  Should I use another function for this?

As it is labview 4.1, I unfortunately cannot use any of the drivers from the website.  However I am hoping that this isn't too difficult a matter.

Thanks,

Ming

[Dennis_Knutson]

Wiring the error clusters makes for good dataflow but what's important is what is the command you are sending to get the waveform? The driver uses the CURVE? command. There's quite of bit of other code in the driver in order to get the trace such as setting the data source (i.e. DATA:SOUR CH1), number of points to read, the encoding, and since the driver requests a binary transfer, the conversion to floating point. Unforturnately, I don't know of an easy way to get all of necessary steps to a version 4.1 VI. It may take a lot of slogging through the programming manual.