BFFA0020; Trigger problem?

[Hilbert_Grandis]

I am using labview to acquire a waveform generated by a function generator. I connect the function generator to the Tektroniks TDS 784D scope and connect the scope via GPIB to my computer. Somehow I cannot acquire the waveform. The error that I get is: 

Tktds7x4 Configure Channel.vi<ERR>
Driver Status: (Hex 0xBFFA0020) Unknown channel or repeated capability name.

Secondary Error: (Hex 0xBFFC0006) Parameter 6 out of range, or error occurred while setting Parameter 6.

Elaboration: Probe Attenuation

I have no idea how I can solve this error/problem. I know that it goes wrong in the triggering but it should have a trigger. 

The program I use worked before, but then I was using a GPIB to USB connector.

Attached I send the block diagram of the program I use.

Hope that someone can help me.

[Nathan-P]

It sounds like there is a configuration setting mistake, as the driver is giving the error.  It sounds like the probe value in your control is not in the range of accepted values.  

Which version of LabVIEW are you using?  I'm using LabVIEW 2011 SP1 and when I installed the driver for your scope, it installed three example VI's:

"TKTDS 7XX Getting Started.vi"

"TKTDS 7XX Application Function.vi"

"TKTDS 7XX Application Statistics.vi"

Try running those examples and see if the error still occurs.  You could also try updating the scope driver, if its not the latest version.