Yokogawa - WTViewerEfree For WT3000E/WT3000/WT1800

Yokogawa - WTViewerEfree For WT3000E/WT3000/WT1800
The WTViewerEfree is a free software for WT3000E/WT3000/WT1800, Precision Power Analyzer. In order to use the instruments easily & quickly, and to gather measured data into a PC smoothly, easy operation and a tool is required. This software will supply an powerful and useful measurement environment for users.


You can use the software to connect the WT3000E/WT3000/WT1800 series to a PC and use the following features.

  • Retrieve, display, and save data that the WT3000E/WT3000/WT1800 has measured and setup parameters.
  • Remotely control the WT3000E/WT3000/WT1800.

  • * Firmware Ver. 2.31 or later is required for WT1800.

You can use the software to control a single WT3000E/WT3000/WT1800 that is connected to the PC.

Setting Window

As well as using the WT3000E/WT3000/WT1800 series front panel to set up the power meter, users can use the software to quickly set up your favorite conditions. It also shows all the setting parameters and the status at a glance. SettingWindow LG

SettingWindow LG

Measurement Window

The software can display items which cannot be shown on a screen of the WT3000E/WT3000/WT1800 series, such as multiple numeric measurement parameters, the harmonics data of each other, bar graphs, trend graphs, vector, and voltage & current waveforms together. The free software thus adds additional visible capabilities to the WT3000E/WT3000/WT1800 series. MeasurementWindow LG



The software has the following menus.

Connection: Used to configure the communication between the WT3000E/WT3000/WT1800 and PC.

Setting: Used to set WT3000E/WT3000/WT1800's measurement conditions.

Measure: Used to display measured results in bar graphs, trend graphs, etc.

File: Used to save and load setup parameters.

Exit: Used to close the software.

Types of Display Screens

The following types of display screens are available.

  • Numeric

    Displays WT3000E/WT3000/WT1800's measurement data numerically. For models with the Advanced Calculation option 

    (/G6), harmonic measurement data is also displayed.
  • Numeric List

    Lists harmonic measurement data for each harmonic order.

    Numeric lists can be displayed when the WT3000E/WT3000/WT1800 is equipped with the Advanced Calculation option 

    (/G6 or /G5).
Numeric list
  • Numeric Matrix

    Displays WT3000E/WT3000/WT1800's measurement data for each element.
Numeric Matrix
  • Waveform

    Displays waveform display data that has been collected from the WT3000E/WT3000/WT1800.
  • Trend

    Displays changes in measured data over time on a trend graph.
Numeric Matrix
  • Bar Graph

    Displays measured harmonic components for each harmonic order.

    Bar graphs can be displayed when the WT3000E/WT3000/WT1800 is equipped with the Advanced Calculation option 

    (/G6 or /G5).
Bar graph
  • Vector

    Display harmonic measurement parameters (fundamental components) as vector. Vector can be displayed when the WT3000E/WT3000/WT1800 equips Advanced Calculation option (/G6 or /G5) and more the 2 sets of same input elements.


Measuring Mode Normal, harmonics, integration
Types of Files Waveform, calculated values, harmonics, settings
Display Screens Numerical, waveform, trend, harmonic Bar Graph* and Vector*

* /G6option is required on.
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 performance.*When the WT3000E/WT3000/WT1800 data update interval is shorter than the time it takes for the software to collect one set of measured data, there will be pieces of data that the software will not collect.

List of functions

Display Numeric Data Available
Waveform Available
Trend Available
Harmonic Bar graph Available
Vector Available
Types of Files Conversion to CSV Available
Data Acquisition Interval 50 ms at max. speed. Available

You can use the software to control a single WT3000E/WT3000/WT1800 that is connected to the PC.

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