CWAI problem when configuring card: The value of a numeric value is invalid

[Francisco]

Hi!

I'm not able to configure the CWAI object with Configure method. After I call that method, I always have the error: "The value of a numeric parameter is invalid".

Here's a sample of my program:

CWAI.Channels.Add("0", 10.0, -10.0, cwaiDIFF, cwaiDC);
CWAI.ChannelClock.Frequency := 10000;
CWAI.NScans := 1000;
CWAI.StartCondition.Type_ := cwaiNoActiveCondition; //Immediate start
CWAI.StopCondition.Type_ := cwaiContinuous;
CWAI.AcquiredDataEnabled := False;
CWAI.ProgressEnabled := False;
AI.CWAI.Configure;

I'm using Delphi 5 with NT SP6.

I can acquire data with MAX test panel.

What I'm doing wrong?

[Sastry V.]

Hi,

I would suggest you to take a look at the set of examples provided in your c:\program files\national instruments\ni-daq\examples\delphi folder. Also please do take a glance at the readme file.

Please do let me know if you still have questions.

Sincerely,
Sastry V.
Applications Engineer
National Instruments.