GPIB Read Speed PRODIGIT 3250

[Qia.sky]

I use PRODIGIT 3250 to develop my test system. But I found when I send a measure command to GPIB port, I can read it very slow about 1000ms or so from the device of 3250. But I found I send a setting command like set the Preset current value, it only cost 100ms or so. So someone here can tell me how can I improve the speed of reading data from PRODIGIT 3250. By the way PRODIGIT 3250 has a serial port and I test it too, but the reading speed also can reach highest speed only 1000ms. I doubt whether it is the device 's problem or my program.

I attach my test sample program, so someone here can help me.

Thanks in advanced.

[Qia.sky]

Does anyone here use this device?

Please give me some hint

Thanks in advance.

I really appreciate that

[Noel]

As someone responded in the info-labview forum, it is likely the instrument requires time to take the measurement.  You might want to check the instrument manual to see if there are settings which might impact the measurement time.  For example, the instrument might default to use an "auto setup" routine to select measurement parameters.  "Autosetup" for each measurement is relatively slow.  If, on the other hand, the instrument allows you to pre-set the resolution and other measurement parameters, this will likely improve performance. 

To avoid any possible overhead in LabVIEW, you should be running your write-read operation in While loop instead of using the continuous run button.  Also, you want to reuse the same session from one loop to the next.

Attached is your VI updated to run in a While loop. 

Thanks,

Noel Adorno