Provides a safe means of measuring circuits with floating potentials up to 1000V (DC & peak AC) from ground and 1300V (DC & peak AC) differential Converts high voltage differential input signal to low voltage ground referenced signal for display on any oscilloscope The output BNC is calibrated to drive a high impedance (1MΩ) load (please note that attenuation is x40, x10, x400 into 50Ω load)