How to acquire graph from hp4155b with labview

[rachel-d]

Hello,

I am trying to acquire graph data from the hp/agilent 4155b with labview 7.1. I am using GPIB, and can see and communicate with the instrument using MAX. I am trying to use the getting started.vi from the driver. I give the instrument descriptor "GPIB1::17::INSTR" as it shows in the VISA interactive control.  I receive the error "HP415x Sys-Error Query.vi: +195,"Cal/Diag failed. Cannot use unit." Any idea what is wrong?

[Dennis_Knutson]

That's a message from the instrument returned with the SYST:ERR? query. It's possible that the instrument failed it's internal self-test. Power cycle the instrument and run this query in MAX. The instrument should also support the *TST? command. You can also run this. If the SYST:ERR? or the *TST? queries return the same message, you will have to have the instrument calibrated or repaired by Agilent or a third-party.

[rachel-d]

Thank you. The getting started.vi is working now. Do you know how to save the graph as image to insert into a Word document? Thank you for your help. 

[Dennis_Knutson]

Yes I do know. You can create a reference to the graph and use the Get Image method. The image data can be passed to the Write JPEG File function.

Message Edited by Dennis Knutson on 04-10-2007 09:47 AM

[harkirat.guron@wispry.com]

Hi I am also trying to capture real time graph or data from HP4155B. I am using Visa resources.

It only updates the graph at the end of test. Is there any way to update the graph along with test sequence.

Thanks

Hark 

[Dennis_Knutson]

Do you mean that you want to display what is happening during a sweep? If that's so, then probably not. Doing the download trace function would probably interupt the sweep but you can give it a try. The Op-Start-Start function would have to be set to not wait until finished

[harkirat.guron@wispry.com]

Yes Dennis, I want to capture it while sweeping. But i think i have to live with what i have now. As i can't put more delay in sweep to read values.

Thanks for your quick response.