Tektronix 5A22N is a high-gain differential amplifier that is compatible with Tektronix 5100-5Series Oscilloscopes. The features high sensitivity, direct-coupled inputs, high common-mode rejection, variable DC offset, and an illuminated knob skirt for deflection factor readout. The 5A22N has a maximum bandwidth capability of DC to one megahertz with selectable high and low-frequency limits. It also has a DC offset feature that allows for small signal variations on relatively large DC levels to be displayed on-screen.