Minimum Voltage Range

[Naser1363]

Hello,

I want to know about difference between Minimum Voltage Range, Minimum Voltage Range Accuracy and Minimum Voltage Range Sensitivity.

Would you please help me about this.

Best regards 

[Ali M]

Hello Naser,

Please specify these terms in relation to the measurement/device/application you are working on.

Thank you,

Regards,

Ali M

Applications Engineer

National Instruments

[Naser1363]

Thank yo for your reply. I see this sentence in a DAQ multifunction.

[Ali M]

Hello Nasir,

The values listed in the Specifications Summary page of a Multifunction DAQ product are also discussed in further detail in the product Specifications Manual. e.g  DAQ devices have a built in amplifier to enhance the signal to better fit the range of the Analog to Digital Converter (ADC), therefore the Minimum Voltage Range refers to the minimum range value that your device can allow good use/utilize the resolution of the ADC. AbsoluteAccuracy = Reading · (GainError) + Range · (OffsetError) + NoiseUncertainty. Sensitivity is the smallest voltage change that can be detected (It is a function of noise). I have included a link below as an example for additional information, (see page 5 of the NI-625x).

1. NI 625x Specifications: http://www.ni.com/pdf/manuals/371291h.pdf 

Thank you,

Regards,

Ali M

Applications Engineer

National Instruments

Message Edited by Ali M on 03-19-2010 05:45 PM