Features: Safe floating measurements 15 MHz bandwidth 700 V maximum input voltage Works with any 1 MΩ input oscilloscope Specifications: Attenuation ÷10 / ÷100 Bandwidth 15 MHz Input R 4 MΩ Differential Mode Range ±70 V / ±700 V DC + Peak AC Common Mode Range ±700 V DC + Peak AC CMRR 86 dB @ 50 Hz Power Source (four AA batteries) 56 dB @ 200 kHz The AP031 is a low cost, battery operated active differential probe intended for measuring higher voltages. The differential techniques employed permit measurements to be taken at two points in a circuit without reference to the ground, allowing the oscilloscope to be safely grounded without the use of opto-isolators or isolating transformers.