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ADC-16 Querries

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ADC-16 Querries

Postby Paul T » Wed Mar 12, 2003 8:48 am

Hi,
Is it possible to drop a 4-20mA signal over a 125 ohm resistor to get a
0.5-2.5v input suitable for use as a differential input to the ADC-16, if so is it possible to deal with the 0.5v offset within the software supplied, in order to zero? Is the software supplied suitable to run on XP.
Paul T
 

Postby matthew » Wed Mar 12, 2003 4:08 pm

Hi Paul,

The answer is not to compensate for the offset, you don't need to. The input will measure from 0 to 20mA with a 125Ohm resistor. Use a lookup table as follows:
0 0
2500 20

The software works fine under XP.

Best Regards,
Matt Everett

Pico Software Engineer
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