can gpib query command at one time

[williamlee1982]

HI all,

I now try to write a small program using Labview, my GPIB card is attached to the oscilloscope, my question is can I query 3 commads(let say:MEAS:VMIN?;MEAS:VMAX?:IDN?? at one time , and read it at one time(suppose three data)?? if can ,how to do it or if there any workaround method?? cos I try to using MAX somehow, it just give the result that for first command only.

Many thanks

william lee

[WiMAX_Eng]

Hi,

You can do what you are trying (just tried it myself with a spectrum analyser) but remember the amount of data coming back.  You'll need to set the timeout and bytes to receive sufficiently high to capture what you want/expect.

Regards

[Dennis_Knutson]

Well, I would say that it's instrument specific whether it would work or not. Sometimes the instrument will generate a query interupted error if you don't send each query separately followed by a read.