2455A – Tektronix Analog Oscilloscopes
250MHz (Bandwidth)  The Tektronix 2455A portable oscilloscope has four vertical channels with DC to 250MHz bandwidth. Deflection factors run from 2 mV to 5 V per division, in a 1- 2- 5 sequence, with either 1 Megohm or 50 Ohm input resistance, in channels 1 and 2. Channels 3 and 4 give 0.1 V or 0.5 per division, with 1 Megohm input resistance, and DC coupling. The trigger systems work automatically for most siginals. Sweep speeds range from 1.5 s to 1 ns per division, including the effects on the X 10 magnifier and the calibrated variable between 1- 2- 5 steps. The SETUP features, AUTO, SAVE, and RECALL, save time and prevent errors whether you are a novice operator or a master. Digital reabouts of time, votlage, scale factors, trigger levels, and auxilliay information also save time and reduces errors.