measuring network voltage

[GoceJ]

I have scxi 1327. The gain is set to 1/100, so when i measure AC Voltage directly from the grid i have max 303V instead 222*sqrt(2)=313V (the grid voltage measured by a multimeter is 222V). In Measurment and automation studio everything is set correctly. Is it something about the max voltage that i can measure or... Thank you

[gbush]

A multimeter reads rms voltage(area under the curve) or .707 of peak voltage. LabVIEW will give you the actual peak voltage. You can either multiply 303 by .707 and diplay, or take the multimeter and multiply by 1.414

[Filipe A.]

Hello;

The multimeter will give you the RMS voltage of the measurement, while MAX and Labview will give you the actual instant value, which will register all picks of ths waveform that is being read.

Regards
Filipe A.
Applications Engineer
National Instruments