If the device Auto Ranges to a single range and is used for multiple measurements, but the signal rises outside of that range, the DMM will return NaN. The caveat to this is less accuracy. The larger the voltage range, the lower the resolution of the. All my energy values display NaN for all voltage, current, power values. Is this likely a configuration issue, or might I have introduced a hardware fault? Helpful post? (0) Have you calibrated your device? Calibration can be done via GUI, go to Web App->Tools->see Calibration section, or do it in. I am having issues with a few averages that are displaying NaN in Serial and my tft display. Some models also offer additional functions such as fault alarms, harmonic analysis, data statistics, and time logging. Multifunction power meters are widely used in substation automation, power. I'm trying out the Current and Power Adapter with the provided Waveforms workspace and even though the current and voltage readings are ok (0. 5A and 12V) the power isn't calculated (the trace is off the scale high on the scope window; the Measurement window shows a blank for the value of p; a nan. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Not looked at this extensively but I have been able to replicate an issue a user reported here https://www. html apply a non-integer value to power and readings on. The first step in troubleshooting any electrical device is to ensure it has a stable power supply. Faulty wiring or loose connections can lead to erratic behavior or failure of a meter. Examine all terminal connections.