Hi,
       I am trying to read the frequency which is set to 1kHz and Duty cycle of 50% and amplitude of 1V.   I am using 
DAQmxReadCtrFreq(taskHandle, 1, 30, DAQmx_Val_GroupByChannel, DataArrayFreq, DataArrayDutyCycle, NoOfSamples, SampsPerChanRead, NULL); function. 
 
I am using Dev1/ctr0 of PCI 6229 for the measurement. 
 
First time I tried with measuring of 10 samples, 10sec Timeout. 
Next time I tried with measuring of 1sample and 30sec timeout. 
But for both the cases I am getting error as in the attachment.
Anyone help me on this.
Thanks and Regards
Nagaraj B