06-12-2015 01:24 PM
Hello,
I ran the sample program
C:\Users\Public\Documents\National Instruments\NI-DAQ\Examples\DAQmx ANSI C\Digital\Generate Values\Write Dig Chan-Ext Clk, but got a message as below:
DAQmx Error: Requested value is not a supported value for this property. The pro
perty value may be invalid because it conflicts with another property.
Property: DAQmx_SampTimingType
Requested Value: DAQmx_Val_SampClk
You Can Select: DAQmx_Val_OnDemand
Task Name: _unnamedTask<0>
Status Code: -200077
End of program, press Enter key to quit.
I'm using USB-6001 and nothing is connected to it except usb cable.
Could you give any advice regarding this error?
Thanks!
06-12-2015 02:50 PM
The digital lines on the 6001 are software timed (a.k.a. "On Demand") only as per the device specifications.
Best Regards,
06-12-2015 03:42 PM
Is it possible to send two outputs as below with an accurate delay time with USB-6001?
Could you please suggest any way to implement it?
06-12-2015 03:53 PM - edited 06-12-2015 03:54 PM
If you can use the Analog Output lines for this task (i.e. you are not already using them for something else) you will be much better off--they can be clocked at up to 5 kHz.
If not, you'll have to use software-timed digital output--I wouldn't consider the timing of this particularly accurate but it might be useable for some applications.
Best Regards,