LeCroy (www.lecroy.com) has released its Disk Drive Analysis (DDA) Series oscilloscopes, which enable engineers to view, capture and analyze complex, high-speed, waveform signals with integrity and speed. The company’s X-Stream architecture integrates a specialized high-speed streaming bus design and SiGe “digitizer on a chip” technology to allow easy transfer of data from the ADC to an acquisition memory. With this architecture, disk drive engineers can easily, quickly and accurately analyze and measure disk drive signals.
The DDA 5005A is specifically developed for media noise analysis, signal fidelity, whole track analysis and acquisition for read channel, and head parametrics with the broadest acquisition memory standard. The Disk Drive Analysis 3000 offers the convenience of choosing 50 O or 1 MΩ inputs, as well as provides similar measurement capability at a lower bandwidth.
To enable users to work efficiently, LeCroy has integrated tools in its DDA Series. The DDA 3000 comes with standard capture memory of 100 Mpts and a two-channel mode, while the DDA 5005A XXL allows multiple drive sectors to be automatically acquired with its 5 milliseconds of single-shot 20 GS/s capture on two channels.
The series can acquire up to 5 GHz of a head signal. Users can QuickZoom it via the front panel as the DDA automatically copies and expands the drive signals. To examine any sector, users simply have to scroll vertically and horizontally. Multiple zooms allow users to see up to a maximum of eight different areas of the head signal. Each zoom is featured in a distinct color. Horizontal and vertical cursors provide accurate measurements of time between two different events. The scope’s parameters also allow users to characterize the pulse width signal or variation to noise ratio in a selectable ratio.
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