Read, understand and follow all instructions, cautions and warnings attached to and/or packed with all test and measurement devices before each use.
Always wear approved eye protection.
Do NOT use on energized circuits or cabling systems.
Connecting the instrument to voltages above the Safety Extra Low Voltage range of less than 60V peak AC or DC may pose a safety hazard to the user.
The Ranger TDR internal components are protected up to 400V peak AC or DC. Connecting the instrument to voltages above this range may pose a safety hazard to the user and the instrument.