LeCroy LT344L - Store and Recall Waveform file into/from PC through GPIB

[Steve SO]

Hi All,

LeCroy LT344L scope can store/recall the waveform to/from Floppy or Internal Memory (M1,M2,M3,M4). In each stored waveform file, it also save the any parameters including the Time/Div, Voltage/div, No of samples . . .  If we recall the waveform file into LT344L, it can exactly show the waveform and other data. Now, i want to store the waveform file into PC through GPIB directly and also can recall the waveform file from PC into LT344L. As i need to store many waveform files so the Floppy and Internal Memory cannot satisfy my requirement. Once the above tasks can be solved, it will solve the limitation of storage problem.

Thanks&Regards,
Steve

[NathanT]

Hello Steve,
      Are you using an instrument driver for your instrument?  There is one available on IDNet.  What development environment are you using?

Cheers,

NathanT

[Steve SO]

Hi Nathan,

Thanks for your reply.

I am not using the Instrument driver. I develop it by the VISA (i.e Read & Write). Actually, i had download the above instrument driver before but it always output the error anytime.(That's why i refer the program code to develop it by VISA.)

Now, i had written down the program for saving the wavefrom file. Note that it is not the chart generated by LabVIEW. It is the binary file. (As same as we save the waveform file in Floopy).  We also can recall the waveform file into machine. Now, i finish the "Save the Waveform file " action. But  i do not know how to do "recall the waveform file from PC into machine".

Here is my part of program for saving the waveform file into PC. Please see it.

Thanks&Regards,

Steve

[alanjb]

Hi Steve,

Alan From LeCroy Tech Support here...

You look like you are on the correct track.  I recommend using the "Fetch Waveform" VI from the "lcwave" driver.  This VI is compatible with the LT series, although the driver as a whole is not. It's also a VISA driver, so you should be able to incorporate it into your program without too much difficulty. The VI uses the WAVEFORM? query (WF? for short) to read back the descriptor block and the datablock separately, and decodes the binary data to generate a waveform cluster.

You can find the driver within IDNET here... Let me know if you have any additional questions!

Best Regards,
Alan

[Steve SO]

Hi Alan,

I get your point and i had downloaded the "lcwave" driver before. Using "Fetch Wave form", it can show the current-state waveform data into LabVIEW chart.

BTW, as i need to save the waveform file into PC (done before.) and recall the saved waveform file into scope directly. It likes the below action by manually.

(i.e. Assume the waveform file into Floopy --> WAVE STORAGE --> RECALL WAVEFORM --> From Floopy --> to Memory M1,M2, M3,M4).

My action is similar this but the file source come from PC (i.e. the saved file path).

Thanks&Regards,
Steve