The Hewlett-Packard Model 1742A is a dual channel, 100-MHz, delayed-sweep oscilloscope designed for general-purpose bench or field use. The dual-channel dc to 100 MHz vertical deflection system has 12 calibrated deflection factors from 5 mV/div to 20 V/div, A maximum sensitivity of 1 mV:div to 40 MHz is provided on both channels by means of a 5X vertical magnification. Selectable input impedance of either 50 ohms or 1 megohm permits impedance selection that best meets measurement applications.