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Thank you for purchasing the WT1801E, WT1802E, WT1803E, WT1804E, WT1805E, or WT1806E 
Precision Power Analyzer. This User’s Manual explains how to use this instrument. To ensure correct use, 
please read this manual thoroughly before beginning operation.
Keep this manual in a safe place for quick reference in the event a question arises.
List of Manuals
The following manuals, including this one, are provided as manuals for this instrument. Please read all 
the manuals.
Manual Title Manual No. Description
WT1801E, WT1802E, WT1803E, 
WT1804E, WT1805E, WT1806E 
Precision Power Analyzer 
Features Guide
IM WT1801E-01EN
The supplied CD contains the PDF file of this manual. 
This manual explains all the features of this instrument 
other than the communication interface features.
WT1801E, WT1802E, WT1803E, 
WT1804E, WT1805E, WT1806E 
Precision Power Analyzer 
User’s Manual
IM WT1801E-02EN This manual. The supplied CD contains the PDF 
file of this manual. The manual explains how to 
operate this instrument.
WT1801E, WT1802E, WT1803E, 
WT1804E, WT1805E, WT1806E 
Precision Power Analyzer 
Getting Started Guide
IM WT1801E-03EN This guide explains the handling precautions and 
basic operations of this instrument.
WT1801E, WT1802E, WT1803E, 
WT1804E, WT1805E, WT1806E 
Precision Power Analyzer 
Communication Interface 
User’s Manual
IM WT1801E-17EN
The supplied CD contains the PDF file of this manual. 
This manual explains the communication interface 
features of this instrument and how to use them.
WT1801E, WT1802E, WT1803E, 
WT1804E, WT1805E, WT1806E  
Precision Power Analyzer
IM WT1801E-92Z1 Document for China
The “EN” and “Z1” in the manual numbers are the language codes.
Contact information of Yokogawa offices worldwide is provided on the following sheet.
Document No. Description
PIM 113-01Z2 List of worldwide contacts
Notes
•  The contents of this manual are subject to change without prior notice as a result of continuing 
improvements to the instrument’s performance and functionality. The figures given in this manual 
may differ from those that actually appear on your screen.
•  Every effort has been made in the preparation of this manual to ensure the accuracy of its 
contents. However, should you have any questions or find any errors, please contact your nearest 
YOKOGAWA dealer.
•  Copying or reproducing all or any part of the contents of this manual without the permission of 
YOKOGAWA is strictly prohibited.
•  The TCP/IP software of this product and the documents concerning it have been developed/created 
by YOKOGAWA based on the BSD Networking Software, Release 1 that has been licensed from 
the Regents of the University of California.
3rd Edition: October 2017 (YMI)
All Rights Reserved, Copyright © 2016 Yokogawa Test & Measurement Corporation