Tektronix 7A21N The 7A21N Direct Access Plug-In is

The 7A21N Direct Access Plug-In is designed specifically for the AC coupling of high-frequency or fast risetime signals directly into the wide-bandwidth CRT of the 7900-Family Oscilloscopes. Two front-panel input connectors allow single-ended or differential operation (internally selected). Vertical trace positioning is accomplished by a front-panel control. Bandwidth: 20kHz to 1GHz Deflection Factor: Less than 4 V/div Input impedance: 50-ohms