Optical voltage and electric field sensor based on the...

Optical voltage measuring apparatus

Optical voltage sensor

Optical voltage sensor

Optical voltage-electric field sensor

Optical wattmeter

Optically pumped magnetometer

Optically pumped magnetometer

Optimized data collection in a wireless fixed network...

Opto-isolator multi-voltage detection circuit

Optoelectronic sensor for an energy consumption meter

Oscillator activated continuity testing switch

Oscilloscope

Oscilloscope based signal level measurement system

Oscilloscope having auxiliary display of a labelled cursor

Oscilloscope having dual time base system for accurate...

Oscilloscope having external trigger display mode

Oscilloscope presentation of sheet profile from a scanning gage

Oscilloscope, analog to digital converter and memory to...

Outage indicating apparatus for meter telemetry systems...