Measuring instruments gain wider scope

| Information and Communication Technology

DLM5000 oscilloscope can be used with mixed signals of 8 analogue and 16 digital inputs

Mixed Signal Oscilloscope brings established test technology to new applications.

Yokogawa has developed an instrument that it describes as a new generation mixed signal oscilloscope with options for four or eight analogue inputs.

It is a successor to the previous 8-channel DLM4000 model with redesigned hardware, offering major improvements in both performance and operability, including a sampling rate double that of the earlier model.

Designed for adaptability and flexibility, the DLM5000 meets the needs of companies in industries such as mechatronics, power electronics, automotive, aerospace, railway and consumer electronics.

The flexibility these users need is achieved with up to eight analogue channels and 32 bits of logic, together with additional maths channels, vehicle serial bus analysis and numerous other analysis features.

A large number of channels are key to developing efficient and reliable high-performance electric motors. Based on modern inverters, successful development of these motors demands multi-channel, highspeed waveform measurement. These types of measurement often need more than four channels, which is why the DLM5000 offers eight true analogue inputs, giving engineers the tools they need for convenient and comprehensive measurement.

The DLM5000’s capabilities also make it ideal for the development of Electronic Control Units (ECU) for mechatronics systems. In this application, numerous I/O analogue, digital and serial-bus waveforms need to be measured. With the ability to monitor eight analogue channels and up to 32-bits of logic input, 16 as standard plus 16 optional, while simultaneously performing protocol analysis, the DLM5000 can speed up development when four channels are not enough.

Additionally, a new feature, which will be available soon, allows two DLM5000s to be linked and work together, extending measurements to gain more information about the performance and behaviour of electronic systems.

With this feature, connecting two DLM5000s with a dedicated cable enables sampling clock and trigger synchronous measurement of up to 16 analogue channels (8 + 8) plus 64 bit logic.

Alternatively, the eight channel and four channel models of the DLM5000 can be connected to give a configuration of “8 + 4 = 12 channels”.

Mixed Signal Operation

The DLM5000 can be used as an eight analogue and 16 digital input mixed signal oscilloscope, with all channels able to be used simultaneously. With the /L32 option, up to 32 logic signals can be measured. Also included are a Bus/State display and an optional DA calculation function, useful for evaluating AD/DA converters.

The DLM5000 features low residual noise, extensive voltage ranges and a variety of real-time low pass filters to ensure signal fidelity.

The instrument combines a large, highly responsive 12.1-inch touchscreen allowing easy monitoring of waveforms, not only when inputting eight channels, but also when the number of waveforms is increased by calculation or zooming. In addition to the touch screen, there is a traditional oscilloscope panel, allowing users to easily navigate through the unit’s analytics features.

Managing and accessing data is made easy through the DLM5000’s expanded memory, which can save up to 100,000 captured waveforms. With the History function, the user can display one or all of the captured waveforms on screen and perform cursor measurement, computation, and other operations on these displayed waveforms. The History function allows the analysis of rarely-occurring abnormal signals, even when an appropriate trigger condition is hard to find because its waveform shapes are not constant.

Numerous methods can be used to search for waveforms meeting characteristics defined by the user, while users can also automatically play back, pause, fast forward, and rewind the waveform history record.

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