Data Magnified 40X... 30 Search Events Found

Exclusive Wave Inspector Controls

Wave Inspector^® Navigation

Imagine trying to efficiently use the Internet if search engines such as Google and Yahoo didn’t exist, web browser features such as Favorites and Links didn’t exist, or Internet Service Providers like AOL or MSN weren’t around. Now you know how most modern oscilloscope users feel when trying to actually use the long record length in their digital oscilloscope. Record length, one of the key specifications of an oscilloscope, is the number of samples it can digitize and store in a single acquisition. The longer the record length, the longer the time window you can capture with high resolution (high sample rate). The first digital oscilloscopes could capture and store only 500 points which made it very difficult to acquire all relevant information around the event being investigated. Over the years, oscilloscope vendors have provided longer and longer record lengths to meet market demands for long capture windows with high resolution to the point that most mid-range oscilloscopes either come standard with, or can be optionally upgraded to, multi-million-point record lengths. These million-point record lengths often represent thousands of screens worth of signal activity. While standard record lengths have increased greatly over the years and can now satisfy the vast majority of applications in the market-place, tools for effectively and efficiently viewing, navigating and analyzing long record length acquisitions have been sorely neglected until now. The DPO3000 Series addresses the need for working with long record lengths with the following innovative Wave Inspector controls:

Zoom/Pan - A dedicated, two-tier front-panel knob set provides intuitive control of both zooming and panning through acquired records. The inner knob adjusts the zoom factor (or zoom scale); turning it clockwise activates zoom and goes to progressively higher zoom factors, while turning it counter-clockwise results in lower zoom factors and eventually turning zoom off. The outer knob pans the zoom box across the waveform to quickly get to the portion of the waveform you are interested in. The outer knob also utilizes force-feedback to determine how fast to pan on the waveform. The farther you turn the outer knob, the faster the zoom box moves. Pan direction is changed by simply turning the knob the other way. No longer do you need to navigate through multiple menus to adjust your zoom view.

Play/Pause - A dedicated play/pause button on the front panel scrolls the waveform across the display automatically while you look for anomalies or an event of interest. Playback speed and direction are controlled using the intuitive pan knob. Once again, turning the knob further makes the waveform scroll faster and changing direction is as simple as turning the knob the other way.

User Marks - See something interesting on your waveform? Press the Set Mark button on the front panel to leave one or more “bookmarks” on the waveform. Navigating between marks is as simple as pressing the Previous (←) and Next (→) buttons on the front panel.

Search Marks - Don’t want to take the time to inspect the entire acquisition to find the event you’re looking for? The DPO3000 Series features robust waveform search that allows you to search through your long acquisition based on user-defined criteria. All occurrences of the event are highlighted with search marks and are easily navigated to, using the front panel's Previous (←) and Next (→) buttons. Search types include edge, pulse width, runt, logic, setup and hold, rise/fall time and I²C, SPI, CAN, LIN, RS232/422/485/UART packet content.

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