USB-6001 DAQmx_SampClk_Rate Error

[Emuka]

I am trying to digital out a square wave using USB-6001, using python with spyder.
Sorry for the rudimentary problem.
I get an error when I try to use the function about DAQmx_SampClk_Rate on my USB-6001.
Is USB-6001 incompatible with DAQmx_SampClk_Rate?
The version of nidaqmx is 0.7.0.

[Kevin_Price · Accepted solution]

The USB-6001 is a simpler device that doesn't support any kind of sample clock for output.  Only for analog input.   Output has to be software timed (i.e., a tight loop over calls to DAQmx_Write to generate individual sample values).  The effective rate will be relatively slow and much less consistent.

-Kevin P

[ZYOng]

USB-6001 Specifications

Surprisingly, USB-6001 actually supports hardware-timed output.

What is the error code reported? Did you configure the sample clock timing? Please attach the code so that we can understand better.

[Emuka]

Thank you for your answer.
I see that the sample clock output function does not exist on the USB-6001.
It may be difficult to control 1ms unit by software, but I will try.

[Emuka]

Sorry for my lack of words.
The error code indicated the following

DaqError: Specified property is not supported by the device or is not applicable to the task.
Property: DAQmx_SampClk_Rate

I see that this was stated in the specification.
I'll take the time to read it again.

[ZYOng]

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@Emuka wrote:

DaqError: Specified property is not supported by the device or is not applicable to the task.
Property: DAQmx_SampClk_Rate

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You cannot change this property if you don't configure the sample clock timing by calling DAQmxCfgSampClkTiming.

Check out the shipping example C:\Users\Public\Documents\National Instruments\NI-DAQ\Examples\DAQmx ANSI C\Analog In\Measure Voltage\Cont Acq-Int Clk