WT500/ WT1600/ WT1800/ WT1800E/ WT3000/ WT3000E file reader software


This software allows you to display data saved in WT500/ WT1800/ WT1800E/ WT3000/ WT3000E on your PC and change it to .csv format.

System Requirements

PCA PC with a 80486DX2 CPU or later (Pentium or later recommended), and 8 MB or more of memory.

Premium4 1.5 GHz or higher (recommended)

1 GB or more (recommended)

Hard Disk
500 MB or more of free space

Microsoft Windows XP, Windows Vista, or Windows 7.(All English versions)

Communication Port

NI (National Instruments) AT-GPIB, PCI-GPIB, PCI-GPIB+, PCMCIA-GPIB, PCMCIA-GPIB+, or PCIe-GPIB with driver NI-488.2 version 1.60 or later (however, version 2.3 is not supported).

An available COM port on the PC

10BASE-T or 100BASE-TX compatible Ethernet port

A USB Rev. 1.1 or later USB port


1024 × 768 pixels or higher

Connecting the WT Series Instrument to a PC

GP-IB Interface to prevent electric shock, turn the power to the instrument OFF when connecting it to the PC. Connect a GP-IB cable from the GP-IB connector on the rear panel of the WT series instrument to the corresponding connector on the PC.

  • Setting the Address
    Set the GP-IB address according to the procedure given in the user's manual that came with the WT series instrument. For details about the GP-IB interface, refer to the information about the communications functions included in the user's manual.
  • RS-232C Interface
    To prevent electric shock, turn the power to the PC OFF when connecting the instrument to it. Connect an RS-232 cable from the RS-232 connector on the rear panel of the WT series instrument to the serial port of the PC.
  • Parameter settings
    Follow the procedure given in the user's manual of the WT series instrument to enter the following parameter settings. (Normally, operation can begin using the factory default settings.)
    Handshaking: select a method from 0 to 7.
    Data format: select a format from 0 to 3.
    Baud rate: select 75, 150, 300, 600, 1200, 2400, 4800, or 9600.
    Terminator: select CR+LF, CR, or LF.
    For details about the RS-232 interface, refer to the user's manual that came with the WT series instrument.


Before Installation

  • Backing up the program files
    Backup the program files you downloaded to a memory media like CF card or USB flash.


All four downloadable program files are self-extracting executables which, when double-clicked, create new files and folders on your hard drive. Two of those four programs require no further installation, but the other two create an additional Setup.exe file which must be executed to complete the installation.
Turn ON the PC and start Windows. Create a new folder on your hard disk with a name of your choice, and download the free software into the folder. Double-click the file necessary for your WT series model, then click OK in the dialog box. A new folder, YOKOGAWA, will be created on drive C and files will be extracted to it. Specify any changes you wish to make to the destination folder.

When the extraction is finished, check to see if the program executable file was created.
If so, installation is complete. If the Setup.exe file (rather than executable files) was created you will need to perform a few more steps to complete the installation. Double-click the Setup.exe file, and follow the on-screen instructions.

Creating Icons for the WT Free Software

After the program has been fully installed, you can use Explorer or the My Computer browser to create a shortcut to the program. Locate the executable file, right-click its icon, and select Create Shortcut from the shortcut menu. Running/Exiting the Software.

  • Running the software
    Double-click the program executable file or its shortcut to run the software. Or, if the program was installed using a Setup.exe file, select Start > Programs > Yokogawa, then the name of the program you wish to run.
  • Exiting the software
    Select File > Exit, or Close the program window.



Please read Software Agreement carefully before downloading.


Version 2.23
Release Date Feb 21, 2017
File Name wtfilereader223e.zip 4.0 MB


Type Software


* Software Agreement
  • The property rights, proprietary rights, intellectual property rights, and all other rights associated with the software are held by Yokogawa Test & Measurement Corporation.
  • Under no circumstances is any dumping, reverse compiling, reverse assembly, reverse engineering, or any other kind of alteration or revision of this software allowed.
  • This software is offered free of charge, but no unlimited warranties are made against any defects whatsoever.
  • Also, Yokogawa may not be able to accept inquiries regarding repair of defects in or questions about this software.
  • The contents of this software are subject to change without prior notice as a result of continuing improvements to the software's performance and functions.
  • Yokogawa bears no liability for any problems that may occur during download or installation of this software.
  • Use of the Yokogawa Web site is at the user's own risk.
  • Any parties contributing to the creation or distribution of the contents on the Yokogawa Web site shall bear no responsibility whatsoever for any damages occurring as a result of the use of said contents.
  • Note that you must agree to the contents of “Software License” for the software that encloses or displays the “Software License” as the conditions of use.
  • This software product may contain open source software (hereafter referred to as OSS). License terms appropriate for each OSS component are applicable in place of the terms of this license. If there is a discrepancy between the terms of the OSS license and the terms of this license, the license terms of the corresponding OSS take precedence.

Downloading of the software indicates acceptance of the software agreement.

Related Products & Solutions

Precision Power Analyzer WT3000

With 0.02% accuracy and 1MHz bandwidth, the WT3000 delivers where the highest precision measurements are required. It is the industry standard for R&D work on inverters, motor drives, lighting systems and electronic ballasts, UPS systems, aircraft power, transformer testing, and other power conversion devices.

WT1600 Digital Power Meter

The High-end WT1600 is designed for a wide range of applications, from energy-saving to large load applications. The WT1600 has a six element input capability to provide maximum flexibility, and Basic Power Accuracy of 0.1% with 1 MHz Bandwidth.

WT1800 High Performance Power Analyzer

The WT1800 Power Analyzer offers maximum flexibility with up to six wattmeter elements, high bandwidths, simultaneous high speed digitizing, and wide voltage and current ranges. Although this model is still available, the newer WT1800E offers higher accuracy.

WT1800E - High-Performance

  • Power, Harmonics (THD) Measurements (up to 500th order)
  • Electrical & Mechanical Efficiency of Inverters and Motors in EV and HEV



WT3000E - High Accuracy

  • High Accuracy Electrical & Mechanical Efficiency of Inverters and Motors in EV and HEV
  • IEC Harmonics (IEC61000-3-2 & IEC61000-3-12); Voltage Fluctuations and Flicker (IEC61000-3-3 & IEC61000-3-11)


WT500 - Mid Range

  • Power and Harmonic (THD) Measurements with Independent Range Controls
  • Efficiency measurements of AC/DC or DC/AC Inverters & Motors