The TDS544A is a high bandwidth, high resolution digitizing oscilloscope. Features and Specifications Bandwidth: dc to 500 MHz Vertical Sensitivity: 1 mV/div to 10 V/div 4 input channels Sample rate: 2 GSa/s Sweep speed: 5 s/div to 500 ps/div Color LCD display Interfaces: GPIB, VGA out, RS-232, Centronics BNC(f) input connectors 1 megohm or 50 ohm input impedance