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Yokogawa has launched the DL850 Scopecorder – its latest combined oscilloscope and data recorder targeted at power electronics, automotive, mechatronics and energy-saving applications.

The Yokogawa DL850 combines a high-speed oscilloscope and those of a traditional data acquisition recorder in a single, portable instrument.

The Scopecorder can be used for measuring physical and electrical parameters in application sectors such as the automotive industry, mechatronics, transport, power electronics and alternative energy.

A dedicated version for the automotive industry – the DL850V Vehicle Edition – includes a module for monitoring the CAN in-vehicle serial bus.

Compared to earlier Scopecorder units, the DL850 features higher-speed acquisition over a larger number of channels, the ability to carry out real-time recording, a user interface and a range of PC interfacing capabilities for wider functionality.

With acquisition speeds up to 100 megasamples per second (MS/s), it achieves 10 times the sample rate, display and memory handling speeds as its predecessor, according to Yokogawa.

A key feature for electrical measurements is the Isopro 1kV isolated input module that, when combined with the 100MS/s acquisition speed and the 12-bit resolution, makes the DL850 suited to measurements on high-speed switching invertors – a core technology in the alternative energy sector.

The DL850 Scopecorder can accommodate up to 128 channels of assorted types including isolated, simultaneously sampled modules.

For users that do not require the highest sample rates, a 16-channel multiplexed module or a choice of three universal voltage input modules allow speed to be traded off against higher 16-bit voltage resolution, better accuracy and wider input ranges.

With its modular architecture, the DL850 Scopecorder is said to be able to handle nearly every type of electrical or physical signal.

Users can combine eight different modules out of a range of 15 unique module types, supporting direct input of sensors such as thermocouples, accelerometers, strain gauges, tachometers and more.

For electrical measurements, an RMS coupled mode makes it possible to monitor and trigger off changes in RMS levels.

The DL850 incorporates a 10.4in LCD display, an internal hard disk drive and a thermal printer.

Three USB ports, an Ethernet port, an e-SATA port, a video port, a GPIB port and a SD-card slot populate the unit’s left side panel.

On the right side, the DL850 has room for eight input modules.

As a diagnostic tool, the DL850 Scopecorder offers all the measurement and analysis tools of a modern digital oscilloscope, including cursors, waveform parameter calculations, mathematics and DSP channels, fast Fourier transforms and more.

In most cases, users will be able to analyse data immediately and get results without the need for offline post-processing.

Up to two billion points of data can be recorded continuously at 100MS/s on each channel of the Scopecorder.

Regardless of memory size, the Scopecorder’s Gigazoom2 engine allows the user to smoothly zoom in and out of a signal, even while acquisition is in progress.

The architecture of the DL850 Scopecorder automatically allocates its memory to best accommodate the user’s test strategy.

Once the desired sample rate is set, Yokogawa said that its ‘history’ feature intelligently utilises the remainder of the available memory – allowing the user to view and save previously captured acquisitions.

The dual-capture function allows both high-speed and low-speed rates to be configured.

In this mode, the DL850 continuously logs data at the slow speed until a trigger condition is met.

At the higher sample rate, the Scopecorder acquires a transient waveform, with multiple waveforms for multiple triggers, all while continuously logging at the low speed rate.

Electro-mechanical systems demand a different set of measurement techniques than pure electrical systems and the DL850 is claimed to deliver higher vertical resolution, channel count, isolation, filtering and abundant acquisition memory compared to general-purpose oscilloscopes.

This makes it suitable for viewing small changes, even across large dynamic ranges and monitor more signals simultaneously.

It also means that there is no need for external signal-conditioning components and that high sample rates can be maintained for longer observation periods.

The DL850 Scopecorder uses familiar oscilloscope controls, triggers and analysis functions.

Unattended operation is enabled in the DL850 by functions such as ‘action on trigger’ or ‘action on stop’.

The DL850 Scopecorder can also automatically send an email, print captured data, sound an alarm and save data to a file when it detects a fault condition.

Whether observation times are microseconds or months, the Scopecorder will remain operational and save data until the user is ready for it.

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