Tektronix tcp0030a ac dc current probe tektronix tcp0030a p the tektronix tcp0030a is a high performance easy to use ac dc current probe designed for use and direct connection without the need of an additional power supply to the tekvpi 8482 probe interface p p this ac dc current measurement probe provides greater than 120mhz of bandwidth with selectable 5a and 30a measurement ranges it also provides exceptional low current measurement capability and accuracy to current levels as