Tektronix tpp0502 passive voltage probe 500mhz bandwidth tektronix tpp0502 p the tektronix tpp0502 is a passive voltage probe that offers the industry s highest bandwidth of 500mhz and the lowest attenuation factor of 2x the probe is ideal for making low voltage measurements such as ripple a common measurement on the output of power supplies p p the low capacitive loading of the tpp0502 means long ground leads can also be used on this probe with minimal impact on measurement quality