alled CWCounter1.Configure which returned a success. Called CWCounter1.Start and got the following error: Run-time error '10123': Start DAQ operation Invalid paramID used. There is no param specified for this method in the doc. Any suggestions? Thanx.NI-DAQ 10123 is the generic error for an invalid parameter in counter configuration. Our counters can be used for many things (pulse and period measurement, edge seperation, event counting, etc.) and require different configuration settings. Without seeing the properties you chose and without knowing your specific application, I would recommend starting your development process with our wonderful counter examples that ship with CW. Pick the closest sample to your application and modify as needed. They are usually available in the MeasurementStudio\VB\Samples\DAQ\Counter directory. They should run with the default settings.
good luck
ben schulte
national instruments
