Passive Probe 500MHz,10X. As new. The Tektronix P6139B is a 10X Passive Probe with a wide bandwidth of 500 MHz and high impedance. It is a compact probe for measuring sensitive switching elements. High input impedance on the probe tip: 10 Mohm, 8 pF Wide bandwidth: 500 MHz Attenuation factor: 10 X Input voltage: 300 V CAT II Integrated oscilloscope and probe measurements with smart communication, automatic scaling and adjustable units on oscilloscope display Excellent electric capacity Compensation range: 8 pF - 18 pF Robust and with easy operation TekProbe interface for direct BNC connector for oscilloscopes with 1 Mohm inputs