Tektronix TM501A

This 1 Slot Power Mainframe for TM 500 with a Tektronix AM 503A Current Probe Amplifier Plug in.

The AM 503 is a plug in modular current-probe amplifier that operates in TM 500 Mainframes.

It allows display of current/division on any oscilloscope with 10mV/div sensitivity, 50 Ohms or 1 megohm input, and at least 100MHz bandpass.

The amplifier attenuator is calibrated in 12 steps with a 1, 2, 5 sequence, and the knob skirt is illuminated to indicate current per division.

Coupling may be switch selected to AC or DC.

AC coupling offers a convenient means of measuring low amplitude ac signals on a high level DC current.