Teledyne Lecroy's Sierra M244 SAS protocol analyzer

Teledyne LeCroy introduces SAS 4.0 analyzer with Jammer capability

  • Teledyne LeCroy has released a new Serial Attached SCSI 4.0 (SAS) Protocol Analyzer platform with integrated Jammer capability for testing and verifying 24Gb/s SAS controllers, devices and systems.
  • Building on the capabilities of the SAS/SATA error injection system, the InFusion option can programmatically alter or corrupt traffic allowing to create sophisticated test cases for verifying next-generation SAS 4.0 protocol.

The Sierra M244 operating as an analyzer can record “4-wide” links with full support for 3Gb/s, 6Gb/s, 12Gb/s and 24Gb/s SAS links as well as 3Gb/s and 6Gb/s SATA. When licensed with the InFusion Jammer option, the M244 provides a real-time error injector that can corrupt traffic on 1, 2, or 4 ports. The system can simultaneously record traffic over the same physical link selected for error injection. By default, the analyzer will use two channels to monitor before and after the error (A-J-A mode).
“Our early work with the Sierra M244 proves the InFusion system goes far beyond simple error injection and provides an almost unlimited ability to intercept frames and primitives and change, delete or modify their contents”, said Nick Kriczky, Managing Director at Austin Labs. “The system has the flexibility to change individual frames while preserving the outbound frame structure, including recalculating the FEC and CRC. The response transmitted from the device-under-test will pass through the Sierra system without modification, allowing true end-to-end system testing.”

In analyzer mode, a complement of hardware-based triggering tools are available to pinpoint protocol traffic of interest. Common protocol errors are flagged automatically including forward error correction (FEC) errors and incomplete commands. Also available in this release the Link Tracker DWORD based display which shows every SPL segment across all four physical links in a separate column allowing easy lane-to-lane timing measurements. The Sierra M244 platform is available with full SAS 4.0 support. Configurations are also available with SAS 3.0 (12 Gb/s) support that are upgradeable to 24Gb/s in the future.

The Sierra M244 analyzer features both sequential and hierarchical displays, protocol traffic summaries, detailed error reports, and raw views of the 150-bit SPL packet structures allowing developers to troubleshoot low-level problems and deliver the high quality SAS 4.0 solutions.