The Tektronix 2245 A is a 4 Channel, 100 MHz Oscilloscope with auto-setup function. On-screen scale-factor readout Time measurements with cursors. Deflection factor range for channel 1 and 2 is 2 mV to 5 V/div, for channel 3 and channel 4 0,1 V/div and 0,5 V/div. Time base A has a sweep time range of 0,5 s/div to 20 ns/div, delayed sweep time base B has a range of 5 ms to 20 ns/div. All channels can be used as triggering source.