AQ7270 Optical Time Domain Reflectometer


This firmware is intended to upgrade the AQ7270 to the latest version.

How to check the current firmware version

  1. Press [F1] key (OTDR) at initial screen after turn on power.
  2. Press [F5] key (Next 1/2)
  3. Press [F4] key (System)
  4. Press [F1] key (Information). Version information is showed.


 In case updating firmware from less than R2.08 to R3.01 or later, internal memory must be formatted before update.
 Please do the file backup and memory format as following before update.

1. File backup;
 - File backup to PC with USB storage function *Ref. IM 19-1
 1) Turn on AQ7270
 2) Press [F1] key (OTDR)
 3) Press [SETUP]
 4) Press [F5] (System setup)
 5) Move the cursor to [USB]
 6) Select [Storage] by using [Enter] or rotary key
 7) Connect AQ7270 to PC with USB cable
 8) Copy the file in AQ7270 to PC by PC operation.

- File backup to USB memory *Ref. IM 18-2, 18-4
 1) Turn on AQ7270
 2) Press [F1] key (OTDR)
 3) Press [FILE]
 4) Press [F1] (Action)
 5) Select [Copy] or [Copy Folder] by using [Enter] or rotary key
 6) Copy the file to USB memory.

2. Format the internal memory;
 1) Turn on AQ7270
 2) Press [F1] key (OTDR)
 3) Press [FILE]
 4) Press [F1] (Action)
 5) Select [Format] by using [Enter] or rotary key
 4) Press [F5] (Format)

Revision History

Version Release Date Content
R03.08 Sep 4,2015

Improved functions

  • Solved the problem when file overwrite.
R03.07 Nov 22,2013

Improved functions

  • Two selections available in memory initializing function.
       - initialize setting value.
       - initialize setting value and internal memory.
R03.04 Feb 7,2012

Improved functions

  • Add the menu of to store file to internal memory when using schedule function
  • Improves event searching function.
  • Improves losing USB setting when using backup function.

Previous version 



Please read Software Agreement carefully before downloading.


Version R03.08
Release Date Sep 4, 2015
File Name 4.5 MB


Type Firmware* Registration is required to download.


* 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.

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