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LXI Standard – Current and Future

LXI Standard – Current and Future. David Owen – Pickering Interfaces TC Chair LXI Consortium david.owen@pickeringtest.com LXI – “It’s About Your Time”. LXI Consortium. Defined Ethernet based control interface for the T&M industry Built around other standards

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LXI Standard – Current and Future

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  1. LXI Standard – Current and Future David Owen – Pickering Interfaces TC Chair LXI Consortium david.owen@pickeringtest.com LXI – “It’s About Your Time”

  2. LXI Consortium • Defined Ethernet based control interface for the T&M industry • Built around other standards • Provide a precise definition of behavior within those standards • In 3 years since first publication • Over 500 products on the market • 15 vendors with compliance tested products • Over 50 vendors are members – almost all the key T&M players

  3. Product Breadth in just a few years • Spectrum Analyzers • Power Supplies • Switching • Multifunction Mainframes • Digital Multimeters • Signal Generators • Function/Arbitrary Waveform Generators • RF/Microwave Downconverters/Upconverters • IF Digitizers • Thermocouple Instruments • WTB Accessories • Bridges • Signal Analyzers • Oscilloscopes • Power Analyzers

  4. Why LXI? • LAN-based systems offer speed, simplicity, and low cost. • The ubiquitous nature of LAN, with its ongoing enhancements and backward compatibility, provides a perfect test and measurement platform. • System configuration is quick and easy through the intuitive Web interface • Programming is simplified, and there is greater software re-use through IVI drivers.

  5. Why LXI? (2) • LXI provides the ability to create hybrid systems that include LXI, GPIB, VXI, PXI, PCI, USB, and others. • LXI offers enhanced system performance and event handling via hardware- and LAN-based triggering modes. • Local and remote instruments can be synchronized through the IEEE 1588 precision time protocol.

  6. From small to large systems • Single or multiple controllers • Short to continental distances • IT industry standard cables and building blocks • High degree of building block independence • Operating systems • Controller technology

  7. LXI is a Different “_XI” • LXI not a Modular Standard Like PXI & VXI • No additional Slot 0 or 1 Controller • No Additional Chassis • Works in Harmony with These Standards

  8. Making it easy to configure and control • Through simple web based interfaces • Providing Soft Front Panels without drivers • Typically through Java programs

  9. 3 Classes of LXI • Ethernet standards • IVI driver • Instrument web pagePhysical Size / Shielding Power / Cooling Indicators / reset button • The baseline for common LAN connectivity Class C Class A Class B Class C Class B • Class C plus • IEEE 1588 time sync LAN messaging • Brings the potential to make systems “smarter” • Breaks the traditional PC centric system model with network and timing capabilities Class A • Class B & C plus • LVDS Hardware trigger bus • Tight sub 5ns local trigger allows module integration for performance products • All products have consistent LAN implementation • Functional classes may be in any physical size

  10. Bringing a sense of Time to a test system • IEEE1588 brings an accurate knowledge of time to instruments • Time stamp events, execute triggers in time, recover past event information • Easy to correlate between instruments • Schedule events across instruments • Off loading traffic at busy times • Minimizing device to device traffic • “

  11. Compliance Testing • LXI products have to be compliance tested • At an LXI Event or through an approved test house • Ensures interoperability between vendors • Ensures consistent specification interpretation • Provides direction for future clarification

  12. LXI Evolution (1) • Version 1.3 being published • Specification reorganised to aid clarity of reading • Adoption of mDNS Discovery mechanism • Commonly used mechanism for printers and other IT products • Adoption of 1588-2008 • Providing improved timing accuracy through use of transparent clocks

  13. LXI Evolution (2) • Very active TC looking forward to Version 2 with added user focussed features • Improved Event Log and Web based trigger support • Resource Management model to arbitrate between processes • Improved peer to peer communication • And probably more, the planning is starting

  14. Conclusion • LXI is a Well Thought Out Specification • Based on the collective knowledge of the leading players • Strong Acceptance in T&M Community • Growing Number of Products • Growing Acceptance by users • Designed for long market life • Ongoing improvements in the standard in response to user demand • With careful attention to legacy compatibility and usability • Bright Future

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