Acquiring signals Oscilloscope Agilent 54642D AND settings

Hello

I would like to use LabVIEW to capture the signals already displayed on the screen of my Agilent Oscilloscope (model 54642D). With this waveform, I would get the current settings of the oscilloscope channel as well (volts/div, time/div, probe attention., delay, offset, sliders with freq/period, etc.). In other words, I acquire a signal with the scope (not), adjust the parameters of scope for my taste on the front panel of the oscilloscope, and then I would like to capture the exact waveform displayed on the scope WITH the oscilloscope settings.

I have been using the project-style driver, found here: http://sine.ni.com/apps/utf8/niid_web_display.model_page?p_model_id=724

It works to control the settings of the oscilloscope and acquire a waveform, but this isn't what I want. I just want to LabVIEW to capture the current state of the oscilloscope screen and the parameters used.

Thank you very much

Brad

Nothing will be mentioned in a textbook on LabVIEW or VISA. What is mentioned is orders SCPI to send to the device for a parameter. You have linked to the operating manual. There is probably a separate programming manual. This is the one you need. Most would be to use a VISA entry to send the request (IE CHAN1:COUP? for mating) and then a VISA read to get the value. You should always write first the instrument in order to tell what data it should return. There is a function to initialize the driver you have. Look at the block diagram, and you will see an entry VISA with a * IDN? written order and a VISA Read then returns the identification. You will make the same basic with commands written procedure.

In MAX, you have an option of VISA interactive command where you can make a request, a reading or writing. A query combines a writing and reading. This is what you will do if you can do all your tests in MAX. When you have the correct query command, you can copy it in LabVIEW.

Tags: NI Software

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