Power Measurement Application Software

Yokogawa's Power Analyzer software manages numeric, waveform, and harmonic data measurements. It enables data logging and instrument configuration from your computer.

  • IS8000 comprehensive test and measurement software
  • Accelerate engineering workflow 
  • Integrate timing, control, and data collection from multiple instruments

WTViewerE software enables PC connectivity for Yokogawa power analyzers such as the WT5000, WT3000E/ WT3000, WT1800E/ WT1800 , WT500 and WT300E/WT300 through Ethernet, USB, GPIB or RS232. This connectivity allows users to easily control, monitor, collect, analyze, and save measurements remotely.

The WTViewerFreePlus software captures measured numeric values, harmonic values, and waveform data. Users can view and save data on a PC using USB, GPIB, RS-232, or Ethernet.

The WTViewerEfree is free software for power analyzer models that include WT series*. The software simplifies instrument configuration and gathering of measurements.

*WT5000/ WT3000E/ WT3000/ WT1800E/ WT1800/ WT500/ WT300E/ WT300

The WTViewer is an application software tool that reads numeric, waveform, and harmonic data measured with the WT3000E /WT3000 /WT1800E /WT1800 /WT500 Digital Power Analyzer.

The PowerViewerPlus (part #760811) enables PC-based remote control, acquisition and analysis of high-frequency and transient power signals from a PX8000 Precision Power Scope.

For use with WT5000, WT3000, WT3000E, WT1800, WT210, WT310 and WT310E. Conforms to IEC62301 Ed2.0(2011) and EN 50564:2011 testing methods.

761922 Harmonic/Flicker Measurement Software

IEC61000-3-2, IEC61000-3-12, IEC61000-3-3, IEC61000-3-11 Harmonic and Flicker Compliance Software


We have added a harmonics current/flicker measuring function to the WT3000 Precision Power Analyzer with world-leading accuracy of power measurement. We have also created PC software for harmonics current/flicker measurement. This PC software and the WT3000 comply with the IEC61000- 3-2 harmonics current standard and IEC61000-3-3 voltage fluctuation/flicker standard, thus enabling the electrical power, harmonics current and flicker of electrical equipment to be measured precisely with a single unit. This paper outlines the harmonics current standard and voltage change/flicker standard, along with the measurement principle and PC-based software of the WT3000.

  • Electric Motor Power Measurement and Analysis
  • Improving/optimizing electric motor performance and efficiency
  • Understand how electric current is measured

Can Xviewer.exe be run as multiple instance?   No - not at this time. Xviewer can not control two or more DL850 chassis. Xviewer can not connect to two or more instruments at the same time. Two or more Xviewer ...


The following softwares have been tested for Windows 7 compatibility. WTViewer Xviewer SL1000 Acquisition Software USB Instrument Drivers for all USB supported instruments TMCTL Library Files for programming with VB, ...


To use the data streaming feature, make sure you have a fixed voltage and current range. Data streaming will not work if the voltage and current are set to auto range.

When using WTViewerFree to automatically save data in CSV format, a lack of memory may occur due to increasing load on anti-virus software such as Virus Buster. As the data save time becomes longer, the CSV file will ...

To programmatically read all 500 harmonic orders measurement values, please use the ":NUMERIC:LIST" command set. The maximum number of items for the :NUMERIC:LIST:VALUE? command is 64.  However, 1 LIST ITEM can ...

It is possible to lock out all the keys, including LOCAL, on the WT210/WT230 using a GPIB specific or controller specific command.For the GPIB controller from National Instruments, the command is called LLO or Local ...
If you want to know the condition of the "Check Range" LED indicator for voltage and current, you will need to read three bits in the Extended Event Register. "Bit-6", "Bit-7", and "Bit-8" needs to be read to know the ...

Although WTViewer is not officially supported under the Linux environment, users have successfully done so using WINE (flavor of Linux) via RS232. For connectivity to WT210/WT230, WTViewer requires that the meter be set ...


The IEC Harmonic analysis on the DL/DLM series oscilloscopes provides a rough analysis and estimation for harmonic testing. The scope will perform an FFT on the current waveform and can be used to measure the general ...


To use USB interface on the WT500 and WT1800 Power Analyzer from NI LabVIEW environment, you will need to use the USB driver from National Instruments. This USB driver is usually installed when you install NI-VISA and is called the ...

There are several items you will need to check and verify to solve this issue. Verify the GP-IB connectionSome instruments have a D/A output connector located next to the GP-IB connector. There have been some ...
You can use the Power Viewer (Model 253734) software. However if you only need to view waveforms, we recommend you use the Waveform Viewer (Model 700919, version 1.23 or later) software. The trial version of the Power ...

When making a WT230 Digital Power Meter RS232C connection using GateWT, please verify the following RS232C communication settings on the instrument: Mode = 488.2 Hand = 0 For = 0 Baud Rate = 9600 Terminator Cr+Lf Even though you can run ...

You can read the average active power during continuous integration mode (just before the integral resets) for the WT230, by monitoring the status of the ITG or ITM bits of the extended event register.   Bit 1 ITG is ...
Yes, you can use DL Term with the WT1800 using an Ethernet (VXI-11) or USB connection.
For the WT1600, to view the harmonic data in the Bar Graph window of WTViewer, you have to select all the harmonic orders in the Numeric window. WTViewer's Bar Graph window display follows the harmonic items activated ...
  • WTViewer Save Setting feature will only save WTViewer setting information
  • Will NOT save the setting information of the instrument
Technical Article
Edition 1

Yokogawa Test&Measurement WT5000 Precision Power Analyzer training module series. These videos detail available software and integration platforms for communicating with the WT5000 Precision Power Analyzer.


Part 17 - Part 20 of the Yokogawa Test&Measurement IS8000 Integrated Test and Measurement Software Platform training module series. These videos provide information on some additional features including PTP synchronization, report generation, screen capture, and high-speed camera synchronization. 


Part 8 - Part 16 of the Yokogawa Test&Measurement IS8000 Integrated Test and Measurement Software Platform 20-video training module series. These trainings detail waveform display settings and analysis options.


Part 1 - Part 7 of the Yokogawa Test&Measurement IS8000 Integrated Test and Measurement Software Platform training module series. These videos provide a big picture look at the software.


This training module covers the following topics:

  • Introduction & Installation
  • Connecting to Instrument
  • Setup, Measure, and Analyze
  • File Operations: Saving and Loading Data
  • Video Demonstrations

For standby power measurement and energy certification maintenance, we rely on Yokogawa Test&Measurement instruments. Their precision, accuracy, and ease-of-use are unrivaled. When given a choice between other test and measurement equipment and Yokogawa, our technicians always go for Yokogawa first. The support team provides thoughtful insights based not just on our industry but also our company’s specific needs. My team has used Yokogawa Test&Measurement instruments for decades and will continue to do so well into the future.

—Director of Technology Laboratories, International Multi-Brand Manufacturer of Major Home Appliances


When I started with my company almost 20 years ago, Yokogawa Test&Measurement instruments were already in use and the engineers had no intention of switching. In fact, we still routinely use some of the older instruments because, well, they just work! The equipment doesn't really become obsolete, and they support their instruments as long as is feasible, which ultimately saves us money. Even so, as things change in our industry Yokogawa adjusts to meet those changes. From our sales representative through technical support and more, I can count on the Yokogawa team to really listen and work with us to provide a specific solution for unique problems.

—Senior Lab Technology Engineer, EMI/EMC, Large Power Systems, Testing, Global Design of Commercial and Industrial Power, Cooling, and IT Infrastructure

Product Overviews


    The IS8000 Integrated Software Platform software platform is an integrated solution that accelerates engineering workflow. It is a revolutionary software that tightly integrates the timing, control, and data collection from multiple instruments, creating a comprehensive measurement suite that delivers confidence, efficiency, and unity.


    Test and measurement engineering work groups can have differing priorities and requirements, which often results in multiple instrumentation systems and data file formats, as well as incompatible reporting. This lack of effective communication between groups and instruments causes decreased efficiency and quality and increased spending and time to market. Unify test and measurement instrumentation, software, and data across engineering teams with a suite of solutions that caters to the different needs of engineering work groups, including accurate power data, fast sampling rates, long recordings of multiple different input types, and insights into waveform data.




    While DC power measurements are relatively straight forward, AC power measurements that include distorted waveforms, varying power factors, and multiple phases can add complexity to an otherwise simple measurement. During this webinar, we cover multiple fundamentals of power measurement.

    Key topics include:

    • Multi-phase measurements
    • Measurement techniques
    • Measurement applications
    • Real-world examples and more

    You know the basics of electrical power measurements, have set up your dyno, and made key measurements – which is great. But as your motor and drive projects progress, the complexities of system drive requirements can change frequently. Control algorithms, networked communications, and mechanical systems form a complex web of interactions that need sorting. This 60-minute webinar explains how to get past ground-level measurements and delve into comprehensive solutions that leverage test and measurement instruments including power analyzers, high-speed data acquisition, and real-time software.

    Topics include:

    • How to avoid the “gotcha's” of inverter-based measurements
    • Computations for field-oriented control
    • The integration of CAN bus communications
    • Correlations in the frequency domain
    • Other advanced motor and drive topics

    The technical presentation includes an audience Q&A.


    Continual improvements and innovations in motor and inverter technologies are key to furthering the goal of global decarbonization in the transportation industry.

    During this webinar, engineering professionals who develop motor and inverter systems will learn how to more effectively benchmark data for and troubleshoot issues with energy efficiency in EV powertrains.

    Key topics include:

    • Baselines for system efficiency and inverter control signal analysis at the systems level
    • Critical measurements to benchmark inverter input, inverter output, and motor output
    • Analysis of motor control signals like torque control variables, positional sensors, and PWM and torque measurements

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