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Eight-channel MSO

YOKOGAWA'S DLM4000 SERIES of mixed- signal oscilloscopes (MSO) is comprised of two models with bandwidths of 350 MHz and 500 MHz. They feature sampling rates of 1,25 Giga-samples per second, expandable to 2,5 Giga-samples per second with interleaving. The instruments provide a memory for up to 62,5 Mega-points per channel and 125 Mega-points in interleave mode, allowing both long recordings and multiple waveforms to be acquired. A history memory function, which does not reduce the oscilloscope’s waveform acquisition rate, allows up to 20000 previously captured waveforms to be saved in the acquisition memory, with any one or all of them displayed on screen for cursor measurements to be carried out. Waveforms can be displayed one at a time, in order, or automatically played back, paused, fast-forwarded or rewound. The history memory in combination with the advanced waveform search features, enable users to capture and see the details of anomalies on individual waveforms when their characteristics are still unknown.

Measurement and analysis features include histogram and trending functions, digital filtering, zoom windows, user-defined mathematics and serial bus analysis. The instruments incorporate a 12,1-inch XGA display, and yet are housed in a body, which is less than 18 cm deep and weighs 6,5 kg. The display is enhanced by a fine grid, high luminance and viewing angle, and on-screen markers with simultaneous display of cursors and automatic parameters. Other features include backlit buttons, additional knobs and jog shuttle, on-screen information in English, German, French, Italian and Spanish, two zoom-windows with 80:20 or 50:50 zoom/main area split, and a choice of first-cycle or screen average mode for frequency measurement.

The DLM4000 Series comes with a variety of configurable triggers combining analog and logic inputs such as edge, enhanced and B-triggers. These also include the dedicated trigger functions CAN and other serial interfaces, as well as the ability to perform simultaneous analyses on two different buses operating at different speeds. This capability is enhanced by the extensive search facilities, allowing the user to look for specific data in the very long memory.

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