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81600B Tunable Laser Source Modules Firmware

This is a firmware package for optical power sensor modules and power head interface modules. Please use the module update program for installing this firmware file to your instruments

IMPORTANT: The Module Update Program is required for all module updates.

You can upgrade Keysight module firmware via GPIB. In some cases, LAN or a serial null-modem cable connection can also be used.


  • PC running Windows operating system.
  • To update via GPIB the PC must be fitted with a suitable interface card or adapter.
  • Alternatively, a serial null-modem cable is required, such as is supplied with your Keysight Lightwave mainframe.

Download and extract "ModuleUpdate.exe" to a directory on your PC's hard drive, then execute Module_Update.exe to install the module update program.

The readme.htm file asssociated with the module update program contains:

  • Notification of prerequisites,
  • Notification of known issues,
  • Detailed instructions for use.

Be sure to study this file before attempting to use the module update software.

Release Date Version Version Description
2006-10-18 4.11 Firmware for Keysight 81600B options 132, 140, 142, 150, 160, and 200, as well as earlier models used in the 8164 Slot 0.