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Typical Configuration  

Typical Configuration

W2351EP DDR4 Compliance Test Bench software license

  • R-35A-001-A Node-locked license
  • R-36A-001-L 12 months upgrades and support - node-locked


Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications

Simulation-measurement correlation and workflow for DDR4 Compliance

Note: ADS Compliance Test Benches are delivered as Add-On Software to ADS 2015.01 or newer. For downloads, pre-requisites and installation details, refer to


The W2351EP DDR4 Compliance Test Bench helps solve the problem of simulation-measurement correlation. In the past, the pre-manufacture design could be simulated and tested using compliance tools from an EDA vendor. And the post-manufacture prototype could be bench tested using compliance tools from test and measurement instrument vendors. However, because of subtle differences between the two vendors independent approaches to compliance, it was almost impossible to correlate the two. This opened the possibility of the pre-manufacture design passing and the post-manufacture prototype failing, necessitating a time-consuming and expensive design spin. In contrast, DDR4 Compliance Test Bench leverages the exact same industry-leading Compliance App used on Keysight Infiniium oscilloscopes. It mimics a real hardware test bench, and, using a scripting technology called “Waveform Bridge,” emits the same waveforms that the Infiniium app receives when you are testing in your lab. Thus, the exact same tests – no ifs, ands, or buts -- are applied to both the pre-manufacture simulated design and the actual post-manufacture prototype.

The product itself consists of two parts: the Simulated Test Bench, and the Waveform Bridge script.

Simulated Test Bench

The simulated test bench is composed of subcircuits, namely a DDR controller, a channel, and a DDR memory chip. The circuit runs under the pre-requisite ADS Transient Simulator. The generic chip I/Os are represented by traditional IBIS models, but you can swap out one or both of these with either IBIS or netlist models that are more specific to your design. Likewise, any or all parts of the generic channel model cascade (consisting of the controller package, motherboard, DIMM connector, DIMM PCB, memory package) can be replaced with pre- or post-layout models. For example, an electromagnetic (EM) field solver can be used to create an S-parameter model of a byte lane on the post-layout motherboard.

Waveform Bridge script

Once the simulated testbench has been adopted to reflect your pre-manufacture design, the Transient simulation runs writing the appropriate waveforms to the dataset. The Waveform Bridge script is a post-processing step that takes waveforms in the data set and writes them to a file that the Infiniium Compliance Test Application can parse.

Use with N6462A DDR4 Compliance Test Application

The file that the Waveform Bridge writes can be read into the N6462A DDR4 Compliance Test Application for Infiniium 9000 and 90000 Series Oscilloscopes. This application is now available with an offline/remote mode, meaning that it can run not only on live data from an oscilloscope, but now also using stored (“offline”) data. In addition, you can now run the application in “remote” mode meaning that it can run on any Windows PC (including the one you run Advanced Design System (ADS) on), not just the PC embedded in the oscilloscope. In this way you can be assured that the tests you run on the pre-manufacture design simulation will be identical to the ones you will run when the prototype is subsequently manufactured.

Typical Configuration

  • W2210BP/BT ADS Core+Transient Convolution
  • W2351EP/ET ADS DDR4 Compliance Test Bench
  • N8900A-001 Infiniium Offline
  • N8900A-002 DSA Package (EZJIT Plus and SDA)
  • N6462A-1TP DDR4 Compliance Transportable License

Learn more about Advanced Design System (ADS) Simulation Elements