TEKTRONIX 1011A

POWER SUPPLY.
The 1101A has two power receptacles that will power up to two independent probes.
The 1101A is a power supply provides external power to probes when the oscilloscope used does not have the capability to supply probe power.

Two external probe power supplies
87-128/174-250 Vac; 48-440 Hz operation
Selectable 50 ohm, termination for use with 50 Ohm or 1 Mohm inputs
Overload protected
Variable DC offset, up to ±200 V
Compatible with the P6201, P6202A and P6230