delphi

[bigdutch]

Hi

I am connecting to a TDS 2002B scope in Windows 7 (x64) via USB using a combination of NIVISA (for 64 bit driver support) and TekVISA (for the ActiveX control I need using Delphi 7).

All I want to do is dump the waveform data to a chart (as in the TekVISA (ActiveX) Delphi example) which works fine. 

Under Delphi XE/XE2 the TekVISA ActiveX control fails (on one line of Pascal code) when importing which is a shame as the project will have to be developed using Delphi 7.

I know Delphi is not officially supported but has any other Delphi user had this problem when trying to use the TekVISA control in newer Delphi versions.

The Control does seem quite old (from the date of the OCX file and the control button graphics!) so it might be something I have to live with unless there is a newer version I don't know about.

Also the NIVISA ActiveS control only has the CW3D graph. I cannot seem to find the ActiveX control that uses the CWGraph (non 3D version). Again I expect the later version of NIVISA have moved on.

Best  Regards

Richard 

[Larry.C · Accepted solution]

Hi Richard,

Welcome to the National Instruments forums!

I would recommend contacting Tektronix or Delphi support and posting this question on their forums as you might get better answers when discussing TekVISA and Delphi compatibility.

Tektronix:  http://www.tek.com/

Delphi:  http://www.embarcadero.com/products/delphi

NI-VISA is a set of drivers which are used for communication with instruments and does not contain CW graphing controls. These controls are part of MeasurmentStudio CWGraph ActiveX controls.

I have found a couple of resources to do with CWgraphing which may be of use:

http://zone.ni.com/devzone/cda/epd/p/id/5402

http://digital.ni.com/public.nsf/allkb/FBDD8265C99866CA86256F770072A017?OpenDocument

http://digital.ni.com/public.nsf/allkb/5E205D2D81C37A5086256FEE006CB378?OpenDocument

I hope this information helps. If you have more questions or need more insight into the problem please do not hesitate to post.

Kind Regards,

[bigdutch]

Hi Laurence

Many thanks for your reply.

I will try and contact Tektronix!

Best Regards

Richard