What is an OSA-RTS
The Open Systems Architecture:
- IEEE 1641 (Signal Modelling)
- IEEE 1671 (ATML)
- IEEE 1636 (SIMICA)
The OSA (Open Systems Architecture) comprises of :
- References Model showing the typical ATS components and their key interfaces
- The set of standards required to satisfy each of these interfaces
- Standardising the interfaces allows for interoperability.
- Whilst it is not essential to use all the identified interfaces, any that are used must be compliant with the standards.
Modular in Design, the OSA utilizes widely supported and consensus based Standards for the Key interfaces which have been subjected to successful validation and verification tests to ensure their openness.
The principles and characteristics of the OSA:
- Architectural Attributes: Adaptable, Upgradable, and Reconfigurable System Architecture
- Design Requirements: Open Standards and Protocols
- Design Considerations: Modular and Open Systems Design Benefits and Concerns
- Business Strategies: Gain Access to Competitive Sources of Supply; Effectively Manage Technological Obsolescence
Using the interfaces and data exchange formats defined by both IEEE 1641 and ATML, a software framework has been written to bring together COTS tools and test information, in an application that sees ATML Test Description through to UUT test pin.
ATML Core Components
The ATML demonstrations used core components to share information across a variety of traditional ATE platforms and In-Circuit testers.This walkthrough examines these core components to provide a detailed critique for other user of ATML, identifying the different methods and lessons learnt when creating ATML files for describing TPS files.The core components considered are
Describes the UUT Interface, test points, components and schematic interconnects associated with the UUT
1641 Signal Translator
Mapping test signal requirements onto test resource capabilities (making use of ATML Test Station Description).
Connecting test resources to UUT pins
Implementing a 1641 runtime interface with calls to underlying test resources.
Signal Model Libraries
1641 Test Signal Framework IDL
COTS tools have been chosen from three different manufacturers, encompassing test program generation, test signal allocation and switch path routing. Each of these manufacturers has participated in the standards development and their products have been developed to adhere to those standards, to ensure interoperability.
Other ATML components and files used in these demonstartion but not neseccarly shared across all demonstrations include
- UUT Instance
- ITA Instance
- ATML Capabilities
- Test Station Description
- Test Station Instance