DAQmx write Function Generator

[labJunky]

Hello,

I am trying to write a very simple labview program to play a sin wave on my PXI 6723 card. I am trying to use the DAQmx Create Channel (AO-FuncGen).vi to do this. However, I get an error message below:

Error -200432 occured at DAQmx Create Channel (AO-FuncGen).vi

Selected physical channel does not support the output type required by the virtual channel you are creating.

Create a channel of an output type that is supported by the physical channel, or select a physical channel that supports the output type.

Property: AO.OutputType
You have requested: Function Generation
You can select: Voltage

The error message is quite clear! But I don't understand why my PXI 6723 Ao0 channel doesn't support that operation. Can someone explain.

Thanks,
Paul

[Dennis_Knutson]

That board's not an NI function generator is it? I think it's just a analog output board. In which case you have to select Analog Output>Voltage as the type.

[labJunky]

hi,

you are right, it is just an analog output board. But I thought the function generators use the FGEN driver and not the DAQmx driver? Do you know which boards support this DAQmx function?

thanks,
paul.

[stilly32]

That task type was added for as yet unrealesed products. It may be expanded to add support for additional DAQmx AO devices in a future driver release. For your application, take a look at the LabVIEW shipping examples -the Cont Gen Wfm Int Clk example is a great place to get started.

hope this helps,

Andrew S 

[KSPriya]

Hi,

I have a similar problem. I am using the PXI-6229 card to generate a function (sine) on analog output channel. I am getting the same error message. What could be the issue?

Kindly let me know.

Thanks,

Priya.

[Dennis_Knutson]

The issue is exactly what is explained already. You don't have an FGen board and cannot use AO FGen. What part of the answers do you not understand?