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Calibration of analog ports on Transport WR44 Telemetry 2 Card

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Does anyone know the right way to configure/use the analog ports of the telemetry2 card on a digi transport with an external power supply?

I followed carefully all the steps of the telemetry2 user guide but the ports are not showing me the right reading.
asked Jan 30, 2015 in Digi TransPort by fchavez14 New to the Community (7 points)

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2 Answers

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Could you provide more information regarding the symptom of the problem? For example, what is the expected reading vs. what you're seeing?
answered Jan 30, 2015 by jeremym Veteran of the Digi Community (1,673 points)
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Hi Jeremym,

I'm trying to measure voltage from an external power supply that varies between 12-15 V for which i'm using a resistor between the positive terminal of the power supply and the "In" terminals of one of the telemetry card ports.

Since the card uses 4-20 mA current loops i'm expecting 4 mA when the power supply is set at 12V and 20 mA when is set at 15V. What i'm getting right now is 15.58 mA at 12V and 18.23 mA at 15V.
answered Jan 30, 2015 by fchavez14 New to the Community (7 points)
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