The SI 9002 is a 25MHz Active Differential Probe with 1:20/1:200 attenuation ratio, extends the measurement capability of oscilloscopes in electronic power converters, inverters, motor speed controls, switch mode power supplies and many applications. The BNC output connector and an auxiliary grounding terminal are connected to the oscilloscope, input leads of the differential probe connect to sprung hooks that come with the probe and sprung hooks are connected safely to test points in circuits under measurement.