The HP 54501A Digitizing Oscilloscope is a general-purpose, 100 MHz bandwidth Oscilloscope The HP 54501A has four input channels, two of which have limited input attenuation. Channels 2 and 3 are limited to an attenuation factor of 10 and optimized for digital signals. Full programmability has been incorporated into the HP 54501A and may be used in a broad range of HP-IB applications, from high-speed ATE to device characterization in a research and development environment. The HP 54501A Digitizing Oscilloscope features powerful triggering, easy waveform storage, automatic measurements and instant hardcopy output.