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I need the raw ADC output from a PCI-4462 using DAQmx

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I need the raw ADC output from a PCI-4462 using DAQmx

Is this possible or are only scaled engineering units availible.

 

Ken Manatt

kmanatt@jpl.nasa.gov

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There is a "Raw" version of DAQmx Read (see image).  That is probably what you are looking for.

 

-Alan

 

 

Message Edited by Alan [DE] on 05-19-2009 09:14 AM
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Thanks Alan,

 

This is exactally what I was looking for.

 

Ken

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Alan,

 

one question to the 'raw':

Is this the real ADC raw? 

How about internal filter, calibration,compensation, scale, gain, oversampling, ... all that stuff well packed into the FPGA/Asic to squeeze the last bit out of the hardware ? 

If you set the range to 0-5V and choose U16  0xFFFF is expected to be 5V, but what was the ADC(!) output?

Greetings from Germany
Henrik

LV since v3.1

“ground” is a convenient fantasy

'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'


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Henrik,

 

I think you will find the information here useful.

 

Regards,

Message Edited by Burban on 05-20-2009 09:43 AM
Ben

National Instruments
Certified LabVIEW Associate Developer
Certified TestStand Developer
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Thank you Burban,

 

is there something similar about the digitizer PXI-5922 and PXI-5124? 

Greetings from Germany
Henrik

LV since v3.1

“ground” is a convenient fantasy

'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'


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Yes Henrik, use the niScope Fetch Binary VI to achieve similar results with a digitizer.  You can find this VI by dropping a niScope Fetch and then selecting a a 1D I8, I16, or I32 based on the resolution of your instrument.
Ben

National Instruments
Certified LabVIEW Associate Developer
Certified TestStand Developer
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