Yokogawa has added two new instruments to its ScopeCorder family of portable multi-channel data-acquisition recorders and oscilloscopes. The new DL850E and DL850EV (Vehicle Edition) ScopeCorders incorporate a number of new features to allow engineers to measure and analyze a wealth of signals in real-time and to speed up development and fault finding in areas such as power electronics, mechatronics and transportation. In addition to the high-speed multi-channel capabilities plus long memory and isolated input channels found in Yokogawa’s established ScopeCorder family, the new DL850E instruments have the ability to carry out the real-time measurement and analysis of electrical power. 

“Yokogawa ScopeCorders are widely used in electro-mechanical applications where measurements of physical quantities need to be displayed and analyzed alongside electrical signals”, says Tom Quinlan, Yokogawa’s General Manager, Test & Measurement, for North America: “Their potential range of applications has suddenly become much wider with the ability to make real-time power measurement and analysis.” All products in the ScopeCorder family are equipped with a set of basic arithmetic mathematical functions such as addition, subtraction, division, multiplication, Fast Fourier Transformation and other computations, but the new DL850E 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. 

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 100 kS/s using a dedicated Digital Signal Processor (DSP) that is able to calculate and display up to 125 types of electrical power related parameters in real-time. This enables the user 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.  Harmonics can be displayed as trends of each order, bar-graphs and vector diagrams. Both RMS and power analysis modes are available.  In addition to the powerful power calculations, the /G5 option also contains all the functionality of the /G3 real-time mathematics option. Like existing products in Yokogawa’s ScopeCorder family, the DL850E combines features from a high-performance digital oscilloscope and a multi-channel data-acquisition recorder. It can capture and analyze both transient events and trends over time periods from milliseconds up to 200 days, storing acquired data in the large acquisition memory, the internal hard disk and/or an external PC hard disk.


  • long memory
  • set of basic arithmetic mathematical functions
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