That means the 14-bit resolution

Hello

The '14-bit resolution' refers to the data entry for the PXI-5412 (via niFgen_CreateWaveformFromFileI16 or niFgen_CreateWaveformFromFileF64), the output of the PXI-5412 through channel 0, or both?  To clarify a bit, I know that niFgen_CreateWaveformFromFileI16 reads a 16-bit data source values, but the values contained in these 16 bits must be within a range of 14-bit?

Some background information...  I use a system that contains a PXI-5412.  I am executing the example C code and change it to some arbitrary waveforms.  I have a Spectrum Analyzer, connected to the output of the PXI-5412 and tries to understand the results.  I use a data file that contains a chirp waveform.

Generate data of chirp via Matlab.  I can save try it in different formats, but began to record off the coast under 16-bit.  In my application, I load the data using niFgen_CreateWaveformFromFileI16 and start the generation.  The output is fed to a Spectrum Analyzer, but the result doesn't look like a sizzle.  However, if I record the same data on as a double and use the SAME code (do NOT change the niFgen_CreateWaveformFromFileI16 function), I see a Twitter.  This result leads me to my question.

Moreover, it is in the talk discussion page wrong forum.  You must go to the site below next time:

http://forums.NI.com/T5/signal-generators/BD-p/310

Thank you

Tags: NI Hardware

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