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B4621A Bus Decoder for DDR2 and DDR3 Validation

The Keysight B4621A DDR memory bus decoder, used with a Keysight Technologies logic analyzer, allows you to decode and view transactions, commands, and data from a DDR2 or DDR3 memory bus in your target system.

To use the B4621A Bus Decoder for DDR2 and DDR3 Validation Software, please do the following:

  1. Ensure that you have the Logic and Protocol Analyzer Software loaded.
  2. Load the B4621A Bus Decoder for DDR2 and DDR3 Validation Software
  3. Load the required add-in: DDR Setup Assistant and Eyefinder

Optional Add-ins:

  • B4622A DDR2/3 Protocol Compliance and Analysis Tool
  • B4623A Bus Decoder for LPDDR and LPDDR2 Validation
  • Enhanced Turbo Trigger Tool (for 1695X modules only)
Release Date Version Version Description
2015-02-09 05.90 For installing the compatible DDR2 and DDR3 bus decoder software package.

How to Download

  • Click the download button, select file and save.

How to Install

  • After you have downloaded the software, double click on the setup file then follow the instructions which are displayed.


  • Requires a License

Supporting Documentation

Add-On Software / Utilities


Installs on:

PC / Instrument

Operating System

  • Windows 8
  • Windows 7
  • Windows Vista
  • Windows XP SP3
  • Windows XP SP2
  • Windows 8.1
  • Windows Server 2003 SP2
  • Windows Server 2008 SP2
  • Windows Server 2008 R2 SP1


Supported Instruments

  • 16950B, 16962A, U4154A Logic Analyzers

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