Download Instructions for Firmware

  1. Select and Click on the "E4991A Firmware Revision 1.01" or "E4991A Firmware Revision 2.XX" according to the serial prefix of E4991A listed at below NOTE. Copy the file (.exe) to a temporary directory (e.g. C:TEMP) on your computer's hard drive.
  2. Extract the files by selecting the temporary directory and unzip the .exe file by double-clicking on the file.
  3. Click the "Firmware Update Procedure" listed below the page. The procedure to update the firmware will appear.
  4. Copy the files to three floppy disks using your computer's FDD and install the new firmware into the E4991A in accordance with the procedure.

Note:
"E4991A Firmware Revision 1.01" is for E4991A with serial prefix JP1KH, JP2KH, and MY432 ONLY.
"E4991A Firmware Revision 2.XX" is for E4991A with serial prefix MY433 and later ONLY.

Keysight recommends using the most current version, which includes the most up-to-date bug fixes and security patches available.
Release Date Version Version Description
2012-07-20 2.10 This version is for E4991A with serial prefix MY433 and later ONLY.
Release Date Version
2012-07-20 2.10
Version Description
This version is for E4991A with serial prefix MY433 and later ONLY.

How to Download

  • Click the download button and save the file to a temporary directory on your PC (or instrument).

How to Install

  • See Above

Licensing

  • Does Not Require a License

Installs on: Instrument

Operating System

  • Windows 2000

Prerequisites

  • No specific prerequisites

Supported Instruments

  • E4991A

How to Download

  • Click the download button and save the file to a temporary directory on your PC (or instrument).

How to Install

  • See Above

Licensing

  • Does Not Require a License

Installs on: Instrument

Operating System

  • Windows 2000

Prerequisites

  • No specific prerequisites

Supported Instruments

  • E4991A

How to Download

  • Click the download button and save the file to a temporary directory on your PC (or instrument).

How to Install

  • See Above

Licensing

  • Does Not Require a License

Installs on: Instrument

Operating System

  • Windows 95/98

Prerequisites

  • No specific prerequisites

Supported Instruments

  • E4991A

How to Download

  • Click the download button and save the file to a temporary directory on your PC (or instrument).

How to Install

  • See Above

Licensing

  • Does Not Require a License

Installs on: Instrument

Operating System

  • Windows 95/98

Prerequisites

  • No specific prerequisites

Supported Instruments

  • E4991A
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