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Firmware update for U1273A Handheld Digital Multimeter

Always update your handheld digital multimeters with the latest firmware to maximize the performance of the instrument. Please follow all the instructions below to ensure the firmware installation is successful.

Release Date Version Version Description
2013-08-05 V1.95 U1273A Firmware V1.95.

How to Download

  • 1. Connect the multimeter to your PC via the U1173A IR-USB connectivity cable and turn on the multimeter.
    2. Go to Start > All Programs > Agilent > Agilent U1273A Firmware Update > Agilent U1273A Firmware Update (Version 1.95).
    3. Click "Auto Search COM Port" button to search and detect the unit. The model number, serial number and current firmware version of the multimeter will be displayed in the "Model Number",

How to Install

  • Installing the software:
    1. Unzip the zip file to a folder.
    2. Go to folder PL2303_XPVistaWin7_Driver, click on the "PL2303_XPVistaWin7Driver. Exe" to install the U1173A IR-USB cable driver.
    3. Double click the Setup.exe file to install the program.
    Uninstalling the software:
    1. Go to Start > Control Panel, then double-click Add or Remove Programs.
    2. In the Currently installed programs window, select the program that you want to remove, then click Remove.


  • Does Not Require a License

Supporting Documentation


Installs on:


Operating System

  • Windows 7
  • Windows Vista
  • Windows XP
  • Windows 2000


  • No specific pre-requisites

Supported Instruments

  • U1273A