The Tektronix 465 Oscilloscope is a dual-channel portable instrument. The dual-channel dc-to-100 MHz vertical system provides calibrated deflection factors from § millivolts to 5 volts/division. The sweep trigger circuits are capable of stable triggering over the full bandwidth capabilities of the vertical deflection system. The horizon- tal deflection system provides calibrated sweep rates from 0.5 second to 0.05 microsecond/division along with delayed sweep features for accurate relative-timemeasurements.