Problem communicating with DL750

[Tickle]

Hi,

I want to use LabVIEW to control and acquire strain measurements using a Yokogawa Scopecorder DL750. I have downloaded the drivers (third party) and accessed the examples in the driver folder. However when I try to run the VIs I get error messages, for instance if I try to run application example 2, I get the following error code...

Error -1073807346 occurred at VISA Write in YKDL750 Wait Update.vi->YKDL750 Application Example2.vi

Possible reason(s):

VISA:  (Hex 0xBFFF000E) The given session or object reference is invalid.

On a different instance, if I try to run the 'auto balance' VI, I get an error message on the DL750 display saying 'undefined header'

I am not sure how to proceed...I am new to Labview, and strain measurements and hence feeling bit lost. Any suggestions would be most appreciated.

I am using Labview 2009, and communicating with the equipment using a 232 serial cable.

Thanks in advance.

Regards,

Tickle

[NathanT]

Hello Tickle, (Is that your first name or last name?  )

      This looks like a great opportunity to use the Instrument Driver Troubleshooting Guide.  RS-232 communication can sometimes require a little more work to get configured correctly, but after that, it usually works reliably.  You might also find this KnowledgeBase Article useful, since it explicitly covers the VISA error that you are receiving.  Please let us know if follow the recommendations in the two documents does not resolve your communication challenge.

Cheers,

NathanT

[Tickle]

Hi NathanT,

Thanks for your help with my query....I've been able to go past some of the VI's like initialize, execute autobalance etc..using the info from knowledgebase, much thanks. I have a new problem that I have no idea how to solve. I am getting a message on the instrument 'waiting for trigger' which then leads to a timeout error on the VI. This obviously means there's a trigger condition or setting that I need to change...but I cannot see where to do that. Any suggestions how I can go past this?

Regards

Tickle (..this is my 'second' first name..)

[Albert.Geven]

Hi

you probably armed the scope and then wait for data that only comes when the scope is triggered.

which example do you use?

[Tickle]

Hi,

I am trying to run application example 2 to understand how it runs as a starting point.

[Dennis_Knutson]

As you should be able to see from the functions used, a trigger condition is not set at all. So either manually change it from what you have it set to or add the function from the library. The other example does set the trigger.