OS-3000A Sweep oscilloscope: 1.dual channel/four trace,40/60MHz freq 2.X-Y mode, ... MCH Sweep Oscilloscope,os-3000A series, w/A&B sweep, dual channel. 40/60MHz frequencySpecifications: ModelSpecificationsOS-3040AOS-3060ABandwidth40MHz60MHzCRT6 inch rectangular screen ... witout prior notice. OS-3000A sweep oscilloscope, 40/60MHz frequency, dual channels/traces oscilloscope