How can I convert a 0-50mA signal to 0-5 VDC for use by a PCI-6014 DAQ?

I have a PCI-6014 DAQ card. I am trying to measure the output of a closed-loop current sensor, which has an output of 0-50mA. When I tried using a 100 ohm resistor as a load (to measure across the resistor to get a voltage input for the DAQ) I get an AC voltage reading! I do not know how to convert the AC Voltage to a varying DC voltage. Most AC-DC converters output a fixed DC voltage (3.3V, 12V, 15V, etc.). Can the PCI-6014 measure the current directly OR is there a method to measure the VARYING 0-5 volt AC voltage? Please be specific, if possible. Thanks in advance!

Hello,
PCI-6014 can measure an AC voltage directly. The Test Panels in MAX will show the peak voltage level of a signal, and not the root mean square (RMS) voltage. For example, if you measure the 120 VAC 60 Hz sinusoidal waveform that is available from a standard North American wall outlet, you will see a wave with a peak of about 170 V.
The conversion between VRMS and Vo is VRMS = Vo/√2.
You will need to determine whether you expect your AC signal to be in units RMS or peak-voltage and make the conversion, if necessary, using the formula above.
-Arun V

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How can I convert a 0-50mA signal to 0-5 VDC for use by a PCI-6014 DAQ?

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