The TAS 400 Series brings leading-edge innovation to low-cost analog scopes with a comprehensive set of features. Auto Setup instantly delivers meaningful waveforms. Pressing AUTOSET button automatically adjusts the horizontal, vertical, and triggering controls to display a stable signal. Autosetup is indispensable when trying to trigger and display unknown waveforms and helps inexperienced users display useful waveforms quickly. Comprehensive Video Triggering simplifies triggering on complex video waveforms. With line or field (odd, even, or both) composite video selections and positive or negative sync, you can cleanly trigger on any NTSC, PAL, or SECAM video signal. The dual time bases let you zoom in on any portion of a waveform for closer examination. The TAS455 Two Channel Analog Oscilloscope has a rise time of < / = 3.5 ns. Features Bandwidth: 60 MHz Auto Setup Store/Recall of Four Setups Video Triggering Dual Time Base Measurement Cursors Trigger Level Indicator CRT Readout