Lesser Known Capabilities of IEEE 1451 Lesser Known Capabilities of IEEE 1451.4 TEDS and TMS Software Support For Each April 2002

Core Functionality of IEEE 1451.4 Presentation Roadmap Core Functionality of IEEE 1451.4 Mixed-Mode Interface Self Identification Self Configuration Scalability Flexibility TMS Venona

Core Functionality of Dot 4 Define a Dot 4 Object Mixed Mode Interface From Host To Sensor Analog/Digital Digital Mode Accesses TEDS Transducer Electronic Data Sheet Self Identification Self Configuration

Core Functionality of Dot 4 Mixed Mode Interface To Sensors ICP®, IEPE Inverted Excitation Multi-Wire Sensors Use Existing Wires, or… Add Another The physical layer of Dot 4 specifies two different ways of implementing TEDS in legacy designs. Consider the two cases: CASE 1: No Additional Wires Mode Physical Wire A B Normal Power Ground Digital Mode Data Ground CASE 2: Additional Wires A B C Normal Power Ground <Not Existing> Digital Mode None Data Ground Of course, ICP® sensors fall into Case 1. Case 2 exists primarily to accommodate legacy B&K microphone equipment that is currently in the field. It also accomodates sensors that may have AC power excitation.

Core Functionality of Dot 4 Self Identification Determine What Type of Sensor It Is Excitation / Signal Conditioning Required Manufacturer ID, Serialization, Calibration Available Dot 4 Configurations TEDS (Transducer Electronic Data Sheet)

Core Functionality of Dot 4 Self Configuration Expose Multiple Configurations To Dot 4 Host Active or Passive Config (Multi-Drop Sensors) Multi-gain Config (Self-Attenuating Force Sensors) Filtering (Internally A, C Weighted Microphones)

Core Functionality of Dot 4 Self Configuration Expose Configurations To Dot 4 Host Active or Passive Config (Multi-Drop Sensors) Dot 4 Host Dot 4 XDCR Dot 4 XDCR Passive Passive Active Active Tranduction Tranduction Host MMI XDCR MMI XDCR MMI

Core Functionality of Dot 4 Self Configuration Expose Configurations To Dot 4 Host Selective Signal Conditioning In Sensor Dot 4 Host Dot 4 XDCR Tranduction Host MMI XDCR MMI

Presentation Roadmap Core Functionality of IEEE 1451.4 Scalability Flexibility TMS Venona

Current 256+64 Bit Memory (DS2430) 4 kBit Memory (DS2433) Scalability Current 256+64 Bit Memory (DS2430) 4 kBit Memory (DS2433) Multi-Chip Transducers Dot 4 Host Dot 4 XDCR MEMORY Tranduction Host MMI XDCR MMI

Presentation Roadmap Core Functionality of IEEE 1451.4 Scalability Flexibility TMS Venona

Divide Self-Identifying TEDS into 2 parts: Dot 4 Flexibility Divide Self-Identifying TEDS into 2 parts: Basic TEDS Contains common info for all 1451.4 transducers: Mfr., Model, Serial Extended TEDS Contains decoding information, calibration information, others...

< Field >,< Data > Dot 4 Flexibility Dot 4 Host Relies Upon External Templates To Decode The TEDS 1451.4 Templates Manufacturer Templates User Templates Decoded TEDS < Field >,< Data > T-BLOCK Software Binary TEDS < 0110 1010 0000 0101 0110 >

Manufacturer Templates User Templates Dot 4 Flexibility IEEE Templates Currently 22 templates (accels, microphones, charge amps) Manufacturer Templates Brings in other sensor types User Templates High end users, specific applications

All Groups Are Dot 4 Compliant Dot 4 Flexibility How Standard Is Your TEDS Template? All Groups Are Dot 4 Compliant 1451.4 Templates Manufacturer Templates User Templates Std. PCB Accels Std. Endevco Accels TMS Microphones B&K Microphones Force Sensors PCB Hammers others... TBD… More Recognized Less Recognized

Presentation Roadmap Core Functionality of IEEE 1451.4 Scalability Flexibility TMS Venona

Venona - A Cross-Platform TEDS Engine Independent of Host Hardware Applicable To All PCB Group Products 1451.4 Templates Manufacturer Templates User Templates LMS Templates Decoded TEDS < Field >,< Data > TMS Venona Binary TEDS < 0110 1010 0000 0101 0110 >

Venona - Layer Separation Remove Hardware Dependency Venona Direct Connection PDA For Display Serial Port Personal Computer Signal Conditioner