V1.11 Aug 24, 2015

If you are unable to download software, please check the following:
  • Please register a my HIOKI account and then use it to log in to the my HIOKI service.
  • Product firmware (product upgrades) and computer application software can only be downloaded for products you have registered on the my HIOKI service.
firmware (
Procedure on how to update the firmware (LR8431-20VupProcedures.pdf)

Version upgrade should be conducted by a qualified technician familiar with the functions and operations of Model LR8431-20.
If you are uncertain as to how to proceed, please contact your local HIOKI distributor for assistance.

・All software provided here is freeware and the best version currently available.
・If the problems or errors during this download and install lead to malfunction, please contact your dealer or Hioki representative.

・The ownership, intellectual right and all other associated rights relating to the software provided here belong to HIOKI E.E. CORPORATION.

If you have read and understand the information above and wish to proceed then please download the designated files.
As for version upgrade procedure, please download ”Procedure on how to update the firmware” which describes the preparation and procedure for upgrading firmware after downloading the files.

Precaution when updating software:
・During the version upgrade process, DO NOT turn off the power to the LR8431-20 or remove the PC card or USB memory stick from the slot. Turning power off will result in failure to upgrade the LR8431-20 and the instrument must be returned to the HIOKI factory for repair.
・To conduct the version update, a USB Memory Stick or HIOKI-issued PC Card is required.

Software for the Model LR8431-20

The current newest software versions are shown below. A version update is highly recommended if you are running older software.

Firmware Version :V1.11

Before you proceed

・Check the version number by accessing the SYSTEM tab on your HiLOGGER. The version number is located on the top left corner of the screen
・If the version number on your Model LR8431-20 is Ver 1.11, there is no need to upgrade your instrument. A version update is highly recommended for all LR8431-20′s operating with firmware that is earlier than the newest version.
・To download the file, it is necessary to register your customer information as well as serial number(s) of your Model LR8431-20.

Version Upgrade History

V1.11 (August 2015) Newest Version
Resolved bugs:
1.Fixed trigger mark display when loading the MEM file.
2.When CSV save, it was fixed header description of the scaling conversion ratio of the pulse channel.

V1.02 (November 2013)
Resolved bugs:
1. Add a weight to the process when you insert a CF card, CF card of some hard to recognize now being recognized.(Even when difficult to recognize, it is recognized to be re-inserted into the CF card in a little early action.)
1.When real-time split save, not the folder of date with reference to the time on the clock, it was changed to save it to a folder of the date with reference to the record time of measurement data.