Probe power

Many Tektronix instruments provide power for active probes. There have been several distinct versions of probe power.

The first Tektronix instrument to provide probe power was the 513. It provides +225VDC, +6.3VDC, and a variable supply producing +15VDC to +150VDC.

The 128 provides +120VDC and +6.3VDC.

The 3S1 provides +100VDC and -12.2VDC.

7000-series scopes provide +15VDC, +5VDC, and -15VDC.