atSpeed Technologies

Products

Software

Oculus is a software suite for measurement and design. It comes in several configurations, each of which is a combination of one or more of the following modules:

• Extractor extracts vector S₂₁ data from TDT data. Bandwidths of approximately 10 GHz are routinely achieved. This module turns a TDR/TDT instrument into an inexpensive alternative to either a two port or a four port VNA. Please see the report titled Broadband Measurements in the Differential Mode in the atSpeed library for some examples of extracted data.
  
• VDPG generates eye-pattern diagrams (EPD) for a transmission channel from S₂₁ data, in software. In the standard version of VDPG, this channel consists of a source, a component (a cable, a connector, a circuit board trace, etc.), a load and, optionally, a passive equalization circuit. The EPD can be based on several data patterns including K28.5, CJTPAT and several PRBS. There is an optimization engine included that can optimize the values of the elements of the equalization circuit. The Matrix Cascade version has all of the features of the standard version enhanced by the means of being able to cascade a nearly unlimited number of components in series (cables, connectors, circuit board traces, etc.). Please see the report titled Advances in High-Speed Design... in the atSpeed library for some examples of generated EPD. Matrix Cascade also allows the user to create various discrete components (R, L, C) as well as variable length transmission channels such as lossy or lossless transmission lines and variable length stubs. Also, a six tap preemphasis component is available, the settings of which can be adjusted either manually or through the optimization engine.
  
• SxP allows Oculus to accept and import S-parameter data from other data sources such as simulators, VNA's, etc.
  

Hardware

TDR probes

atSpeed makes a line of TDR probes based on standardized high-speed connectors, such as the InfiniBand-1X or the InfiniBand-4X. Data sheets for some of our probes are shown below. The list is incomplete; if you have questions about a specific connector type please inquire at info@atspeed.net. Other probes based on DB-9, IEEE-1394, HSSDC and HSSDC-2, have been built as well.

• InfiniBand 1X [pdf 408 kb]
• InfiniBand 4X [pdf 1.58 Mb]