Yokogawa has added two new instruments to its ScopeCorder family of portable multi-channel data-acquisition recorders. The new DL850E and DL850EV (Vehicle Edition) ScopeCorders are enhanced by several new features enabling measurement and analyse of a range of signals in real time and for quicker development and fault finding in areas such as power electronics, mechatronics and transportation.

The instruments feature high-speed multi-channel capabilities in addition to long memory and isolated input channels. As a result the new DL850E instruments are able to carry out real-time measurement and analysis of electrical power.

“Today, ScopeCorders are widely used in industries such as automotive and aerospace where measurements of physical quantities need to be displayed and analysed alongside electrical signals”, says Terry Marrinan, Yokogawa’s Vice President, Test & Measurement, for Europe & Africa: “Their potential range of applications has suddenly become much wider with the ability to take real-time power measurement and analysis to a new level.”

All instruments in this range come with a set of basic arithmetic mathematical functions such as addition, subtraction, division, multiplication, fast Fourier transformation and other computations, however as an advanced feature set, the new versions also offer the /G5 option for real-time measurement of electrical power as well as the existing /G3 option for real-time mathematical computations and digital filtering and the /G2 option for user-defined computations.

The company advises, with the /G5 electrical power option, trend calculations such as active power, power factor, integrated power and harmonics can be carried out at data update rates up to 100kS/s using a specialised digital signal processor (DSP) that is able to calculate and display up to 126 types of electrical power related parameters in real time. This enables users to display raw waveform signals such as voltages and currents along with calculated power parameters as well as the capability to trigger on any or all of them.

Trend waveforms of each order of harmonics, bar-graphs and vector displays can be displayed. Both RMS and power analysis modes are available. In addition to the enhanced power calculations, the /G5 option also contains complete functionality of the /G3 real-time mathematics option.

Another enhanced feature of this latest variant is the added capability of capturing and analysing both transient events and trends over longer time periods from milliseconds up to 200 days. The device stores acquired data in its large acquisition memory or the internal hard disk and/or an external PC hard disk.

Flexible modular inputs enable combined measurements of electrical signals, physical parameters from sensors, and data from CAN/LIN serial buses. A choice of 17 input modules allows the instrument to be configured up to a maximum of 128 channels, allowing for a thorough insight into any application by synchronising the measurement of different types of electrical and physical signals.

Individually isolated and shielded input channels provide high resolution and high sample rates, whilst a special ‘dual capture’ feature allows transient signals to be captured during long-term measurements by recording at two different sampling rates.

The acquisition memory allows storage of up to 2 gigapoints of data and provides high sample rates of up to 100MS/s on multiple channels simultaneously. This history memory function allows users to quickly isolate and examine individual waveform records for detailed analysis.

The company advises, its ScopeCorder DE850EV Vehicle Edition is designed for engineers working in the automotive and railway industries. Common to these applications is the challenge of combining measurements of electrical signals, physical performance parameters acquired by sensors, and CAN- or LIN-bus data transmitted by the powertrain management system. In response the Vehicle Edition provides a thorough insight into the dynamic behaviour of the electromechanical system, saving a great deal of time compared to other approaches such analysis on a PC or the use of other software.

A DC power option allows the DL850EV to be used in a vehicle, with power being supplied by the vehicle’s DC battery. The DC power option allows AC and DC power supplies to be used together to ensure a highly reliable power source. If the AC power goes down, the device instantly switches to a DC input without interrupting the measurement.

For added support, the ScopeCorders are supported by a standard 3-year warranty.

Yokogawa Electric Corporation