8-channel mixed-signal 500MHz oscilloscope supports up to to 2.5 GS/s

October 17, 2012 // By Julien Happich
The Yokogawa DLM4000 is what the company claims to be the industry's first mixed-signal oscilloscope to feature eight channels.

Combining the large screen and 8-channel capability of Yokogawa’s earlier 8-channel DL7480 oscilloscope with the mixed-signal technology of the company’s DLM2000 Series, the new instrument is well suited to test and debugging applications in the embedded systems, power electronics, mechatronics and automotive sectors.

The DLM4000 Series comprises two models, with bandwidths of 350 and 500 MHz and a sampling rate of 1.25 GS/s (gigasamples per second), expandable to 2.5 GS/s with interleaving. The channels can be allocated as eight analogue channels or seven analogue channels plus one 8-bit digital input.

A future option will add 16 more channels of logic to allow seven channels of analogue plus a 24-bit digital input. The new instruments feature exceptionally long memory (up to 62.5 M points per channel and 125 M 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 high waveform acquisition rate, allows up to 20,000 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 enables users to capture and see the details of anomalies on individual waveforms when their characteristics are still unknown.

The instruments incorporate a 12.1-inch high-resolution XGA display, yet are housed in a compact body less than 18 cm deep. 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 languages, 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