WTViewerE Application Software

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. With multichannel measurements, multi-unit connectivity and multilingual support, the WTViewerE allows users to easily control, monitor, collect, analyze, and save remote measurements from up to any 4 power analyzers simultaneously.


Test Application:
●Automotive Power Train
●Wind Power Inverter
●Home/Office Appliances
●Solar Power Inverter
Yokogawa WT Series
Power Analyzers


WT3000E /

ph H1 Front No Box S
WT1800E /

Power Measurement Software
  *Simultaneous connections of up to 4 units   Measurement , Remote Control
Multi-Unit Synchronization
Visualization and Analysis


Real-time Control
WTViewerE allows users to analyze and control remote measurements in real-time or use previously acquired data. In the online mode, users have real time control of measurements from each connected instrument, allowing them to remotely start or stop integration or collect live measurement values. In the offline mode as well users can analyze the latest acquired or previously stored data.

Multichannel Measurements
With the WTViewerE, users can simultaneously view up to 12 waveforms, 8 trends, 8 vectors and 6 harmonic bar graphs in split screen mode or zoom in using cursors for more detail on a particular area of interest. Users can also customize, save and load screen layouts as well as specify the data to be saved in CSV format. The software also allows users to create custom computations combining values from multiple power analyzers.
Latest Images
Measurement Screen (online)
Multi-unit Connectivity
WTViewerE enables synchronized measurement of up to four WT instruments in any combination regardless of model, element type or optional modules.
The software auto detects connected instruments and displays a list from which users can modify wiring systems, voltage and current ranges, update intervals, synchronization sources, display formats and other measurement conditions.

Analysis Screen (offline)
  With customizable split screen display of readings in numeric, bar, trend or vector formats, the WTViewerE simplifies the acquisition, storage and analysis of multichannel measurements from up to 4 power analyzers simultaneously.

Ideal for multichannel power measurements

The WTViewerE allows users to :

  • Connect, synchronize and configure up to four power analyzers in any combination via Ethernet, USB, GPIB or RS232
  • Remotely monitor, collect, and analyze live or stored multichannel measurements in a numeric, bar, trend, or vector formats
  • Perform user defined computations combining values from multiple power analyzers.
  • Save or load configurations, measurement data, screen layouts and more.


WT Series Models WT5000


WT3000 (760301/760302/760303/760304)
(firmware 6.11 or later)


(firmware 2.31 or later)

WT500 (760201/760202/760203)
(firmware 1.21 or later)


The WTViewerE allows simultaneous connection of different WT series models.
Example: WT3000E-WT1800E, etc.
It also allows simultaneous connection of the same models with different input element types/numbers or different options.
Display screen Measuring Item: Normal, harmonics, integration
Functions Display Screens: numeric, waveform*1, trend, harmonic list*2, Bar Graph*2 and vector*2*3
*1 Harmonic measurement option must be installed in the WT300 or WT300E.
*2 Harmonic measurement option must be installed in the WT.
*3 A vector window cannot be displayed on the WT300 or WT300E.
Data Acquisition Interval:50 ms at max. speed.
- The data storage period can be any custom settings (more than 20 seconds) and the data update rate of the product.

- Depends on your PC's processing speed, the communication interface is use, and the number of data points that the software is collecting from the WT.

- When the data acquisition interval is 500 msec or less, dropout of waveform data will occur on regular basis.
Data conversion
Numeric and Waveform data: CSV format (.csv)
Languages Supported English, Japanese, Simplified Chinese,
German, Italian, Korean, Russian,
Spanish, French, Hungarian

System Requirement

PC CPU Equivalent to Intel Core i5-2430M or better
Memory 4 GB or more recommended
Storage*4 1TB free space or more on the hard disk
OS English version of Windows 7, Windows 8.1, or Windows 10
Communication Board GP-IB NI (National Instruments)
On Windows 7: Use driver NI-488.2 Ver.2.7.2 or later.
On Windows 8.1: Use driver NI-488.2 Ver.3.1.0 or later.
On Windows 10: Use driver NI-488.2 Ver.3.1.0 or later.
On Windows 7: Use driver NI-488.2 Ver. 2.8.1 or later.
On Windows 8.1: Use driver NI-488.2 Ver.3.1.0 or later.
On Windows 10: Use driver NI-488.2 Ver.15.5.0 or later.
On Windows 7: Use driver NI-488.2 Ver. 14.0 or later.
On Windows 10: Use driver NI-488.2 Ver.15.5.0 or later.
RS-232 An available PC COM port
Ethernet 10BASE-T or 100BASE-TX compatible Ethernet port
USB A USB Rev. 1.1 or later USB port
Display, Printer, and Mouse Screen Resolution 1366×768 pixels or higher
Disk Drive A drive that can read CD-Rs
Operating System Must be compaible with the operating systems listed above.

*4 Storage Capacity
This software saves all displayed measured data.
Depending on the combination of setup items that affect the data size, the data may exceed 1 TB.


Conditions of setup items :

  • Connected model: WT1806/G6/DT/MTR
  • Number of connected devices: 1
  • Update interval: 1 s
  • Number of waveform display functions: 2
  • Number of numeric list display functions: 3
  • Number of bar display functions: 1

Measurement data acquisition time and size:

  • 10 minutes: Approx. 15 MB
  • 1 hour: Approx. 88 MB
  • 1 day: Approx. 2.1 GB
  • 1 month: Approx. 63 GB

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