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AUTOTESTCON '94. IEEE Systems Readiness Technology Conference. 'Cost Effective Support Into the Next Century', Conference Proceedings.

Date 20-22 Sep 1994

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Displaying Results 1 - 25 of 106
  • Achieving tester independence

    Publication Year: 1994 , Page(s): 321 - 327
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (664 KB)  

    Currently, the cost of avionics testing is extremely high. Typically experienced testing costs-as high as 50 percent of the product's cost-are a result of a continual need to reverse engineer at each stage in the product's life cycle to obtain essential information necessary to accomplish testing and the relative inability to reuse information gained at one stage in similar situations during subsequent stages. The root cause of this limited reuse capability is the dependency of the Test Program Set (TPS) on a particular software language, instrument(s) and/or technology. This dependency is manifested by the inability to capitalize on previous investments. In turn, this inability to reuse the components of the TPS causes each developed TPS to be an item of expense, rather than an opportunity to leverage a previous TPS development activity that would render each TPS an investment. This paper discussses a high-level view of some of the key reasons these dependency constraints exist and describes the efforts underway to leverage new programming techniques to turn the “typical” TPS development circumstance from an expense to an investment and, ultimately, drive down the cost of avionics testing View full abstract»

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  • Analog/mixed signal fault diagnosis algorithm and tool review

    Publication Year: 1994 , Page(s): 351 - 360
    Cited by:  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (676 KB)  

    The development of fault diagnosis algorithms for digital systems has been intensively studied, reported and ultimately implemented in commercial-grade toolkits for testing applications. But the analog/mixed signal fault diagnosis problem, which encompasses the digital problem domain, is only now receiving much more attention. Computer-aided tools using algorithms that efficiently diagnose the cause of any unacceptable circuit behavior are now indispensable testing resources for electronics manufacturing and maintenance processes. This report is a description of several analog/mixed signal fault diagnosis algorithms and their implementation in computer-based tools View full abstract»

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  • An object oriented ATLAS compiler

    Publication Year: 1994 , Page(s): 257 - 261
    Cited by:  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (344 KB)  

    Conventional compilers require a large amount of maintenance, and are difficult to adapt to changes in the language. They are limited to parsing a single version of a language. This paper presents an alternate design to conventional compilers, a method in which ease of maintenance and enhanced flexibility is the primary goal View full abstract»

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  • Reducing life-cycle costs in ATE technology insertion

    Publication Year: 1994 , Page(s): 439 - 442
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (268 KB)  

    As the procurement dollars dwindle we are faced with an increasing need to maintain fleet support with fewer financial resources. The Navy has taken an innovative approach to decreasing life-cycle costs while addressing the testability requirement. By using cost control and performance measurement techniques practiced in the private sector and inserting commercial-off-the-shelf equipment into aging test sets they can be made reliable and supportable. Replacing a 1970's computer with an 80486 computer and the associated hardware is discussed. Decreasing documentation costs by digitizing the technical manuals and using a CALS compliant software developed by the Army is presented View full abstract»

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  • Avionics testing on the CASS

    Publication Year: 1994 , Page(s): 25 - 28
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    In 1992 Naval Surface Warfare Center Crane was tasked to develop a test program for the band 10 sector front end for the Consolidated Automated Support System (CASS) test bench. This paper provides a description of our experience at avionics test development on the CASS. A brief history and description of the CASS is given as background View full abstract»

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  • Neural engineering utility with adaptive algorithms

    Publication Year: 1994 , Page(s): 709 - 716
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (496 KB)  

    The neural engineering utility with adaptive algorithms (NEUWAA) is a machine-based intelligence system for automatic test equipment, which integrates various technologies in an adaptive fault-detection environment. Computer enhancements and mathematical algorithms allow for the use of man-machine and intelligent applications. The human/machine interface optimizes the test environment by providing state-of-the-art adaptive algorithms to streamline test sequences and diagnostics. NEUWAA employs state-of-the-art diagnostics methodologies coupled with self-organizing evolution to provide an efficient test environment at any level. Highlighted visual images with dialogue of the unit under test provide interactive fault-isolation including guided-probe sequences to streamline fault/diagnosis. The system is completely interoperable with all other standard software packages. This paper outlines the neural engineering utility with adaptive algorithms system including its various characteristics and the techniques involved in its creation View full abstract»

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  • The anatomy of the test language standard required for autonomous, cooperative information exchange in a distributive open test environment (Test object reuse)

    Publication Year: 1994 , Page(s): 263 - 269
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (396 KB)  

    While numerous application tools and significant standards such as VXI have emerged, little has been done to enhance the use and reuse of key information required for test. This situation occurs because higher order test procedures, methods and standards required by high end users are not being pursued by the commercial sector. Required information infrastructures and their associated architectures and standards have not been evolving at a rate required to keep up with the technology needs. This situation results in the development of autonomous uncooperative (across applications) tools. C/ATLAS-94 has introduced a number of substantial improvements to ATLAS. In the incorporation of these improvements, a need to restructure the language became apparent. The introduction of complex signal, bus testing, new digital and the event enhancements reinforces this need. In addition, the current technology trends and efforts such as A Broad Based Environment for Test (ABBET) require standards that can accommodate an open architecture layered approach to information exchange View full abstract»

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  • Computer Aided Re-Engineering (CARE) for Automatic Test Equipment (ATE)

    Publication Year: 1994 , Page(s): 623 - 635
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (916 KB)  

    This paper addresses a current and future requirement to maintain out moded and obsolete Automatic Test Equipment (ATE) and their associated Test Program Set (TPS) software. There are two major issues with regard to this requirement; first, the ATE hardware is no longer supportable and must be replaced with newer computers and instrumentation. Second, the TPS software must be migrated to the new ATE hardware. This paper presents currently available Computer Aided Re-Engineering (CARE) techniques that will greatly assist the user with this migration View full abstract»

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  • Containing military autotest cost growth through the use of commercial standard equipment architectures

    Publication Year: 1994 , Page(s): 491 - 494
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    The recent past has been stressful for the commercial airline industry: fierce competition has caused the demise of several carriers. The resulting drive to slash operating expenses has bolstered development of avionics industry standards for automated test equipment. Rockwell's Collins Air Transport Division (CATD) has begun to market compliant test gear that airline maintenance departments wishing to acquire modern high-performance test systems without the development cost penalty have eagerly received View full abstract»

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  • Application of fiber-optic delay lines in radar phase noise measurement

    Publication Year: 1994 , Page(s): 179 - 182
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (196 KB)  

    A critical parameter in the performance of airborne radars is the phase noise of the radar's carrier frequency. Low phase noise is important for accurate long range detection of a target. Many phase noise test sets utilize waveguide delay lines as part of the test circuit. Because of its size, weight, and signal attenuation, the waveguide delay line has length limitation. Replacing waveguide with fiber-optic delay line allows for a major reduction in size and weight, as well as an added ability to improve the sensitivity of the test set in measuring phase noise close to the radar's carrier frequency. This paper describes characteristics of waveguide and fiber-optic delay line based phase noise test sets. The advantages and disadvantages of both types of delay lines are discussed along with recommendations for the use of one versus the other as well as a combination of both View full abstract»

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  • Emerging standards reduce product life-cycle costs

    Publication Year: 1994 , Page(s): 131 - 138
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (488 KB)  

    The product development lifecycle and in particular the transition in the product development lifecycle from the design phase to the test phase is hampered by the inability of point tools to be integrated into a common development environment. This paper describes the integration of test preparation tools from a board test system into an Electronic Design Automation (EDA) environment View full abstract»

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  • Behavioral stimulus generation for digital test programs

    Publication Year: 1994 , Page(s): 423 - 425
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    This paper describes a process, developed by Integrated Test Solutions, Inc. (ITS), that provides the test programmer with a new type of environment for developing true functional tests using ATPG. This process is called BEhavioral STimulus for TEST Development, or BestTest. BestTest allows for the development of true functional tests using much smaller test patterns than with conventional ATPG alone. Test vectors produced using the BestTest approach result in higher levels of fault detection at significantly lower cost. The heart of the BestTest approach is to provide the test programmer with a behavioral stimulus generation capability that provides for: the ability to generate conditional stimulus; the ability to create complex functions; and the ability to sense the state of the simulation at run time View full abstract»

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  • The application of an automated software tool for modeling test processes

    Publication Year: 1994 , Page(s): 307 - 310
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (240 KB)  

    To obtain a consensus model of a complex system utilizing a diverse group of people requires a standard automated modeling tool. Without this type of modeling tool various models must be interpreted to be incorporated into a single model. Misinterpretation of the different views is inevitable causing models to be incorrect. Use of an automated tool such as IDEFO will eliminate integration problems because of its ability to express the point of the model in a standard graphic way View full abstract»

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  • Mobile test systems for flightline and forward battle areas

    Publication Year: 1994 , Page(s): 507 - 508
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (152 KB)  

    Mobile testers are rapidly becoming a critical ingredient in present and future military automatic test equipment strategies and procurements. Lightweight, portable testers are required in flightline, at forward battle areas and in rapid deployment operations. These portable testers must have RF and microwave testing capabilities which until now have not been easily available in small, portable systems. This paper focuses on a systems approach in using digital signal processing (DSP) and monolithic microwave integrated circuits (MMIC) in developing portable testers. Leading edge MMIC technology has enabled RF/microwave systems to be downsized for completely portable flightline and field use. Future defense programs such as Joint Services Electronic Combat System Tester (JSECST) will emphasize this capability View full abstract»

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  • Replacing the HP2100 computer in US Navy test sets

    Publication Year: 1994 , Page(s): 443 - 449
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (404 KB)  

    The DOD has a large investment in ATE which has become increasingly difficult and costly to repair due to non-availability of parts and trained maintenance personnel. One example is the AN/DPM-22 Guided Missile Components Test Station, a 1970 vintage test set based on the Hewlett Packard 9500 Automated Test System. In order to increase the service life of the AN/DPM-22, the US Navy opted to replace the Hewlett Packard 2100S computer and its peripherals with an IBM-compatible 80486. One requirement was to retain the existing test equipment, which has an assortment of IEEE Standard 488 compatible and peculiar parallel interfaces. Another requirement was to minimize the software changes. This paper addresses the hardware and software designs which were implemented to achieve those goals View full abstract»

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  • Joint service missile testing-a CASS Navy/Air Force solution

    Publication Year: 1994 , Page(s): 19 - 23
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    The shrinking defense budget is applying increasing pressure on the armed services for standardizing ATE. Standardization of ATE for avionics and ground systems is well established, and has proceeded based on individual service demands and solutions. Recent decisions by OSD and Congress have mandated further ATE standardization cutting across service lines, with a special focus on maximizing the return on the Navy investment in CASS. Until recently the world of missile systems has not been included in standardization efforts and special test equipment applications still proliferate View full abstract»

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  • Virtual instruments: adding RF transmission line testing to an existing tester at almost no cost

    Publication Year: 1994 , Page(s): 705 - 708
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (228 KB)  

    The core of the virtual instrument (VI) concept is that many instruments can be implemented completely in software, supported by only a bare minimum of low-cost, commercial off-the-shelf hardware. To demonstrate the strong advantages of this approach, we demonstrated the Full Analytical Systems Tester (“FAST”), initially configured for end-to-end testing of electronic warfare (“EW”) suites. The authors added a full range of software instruments for transmission line testing, including insertion loss, return loss, and VSWR. Countering arguments that virtual instrument-based architectures are not sufficiently mature, FAST was successfully demonstrated in the field versus the US Air Force's and Navy's first line EW suites View full abstract»

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  • ATLAS language and new instruments technologies: the challenge

    Publication Year: 1994 , Page(s): 281 - 288
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    During last years we are facing a new challenge: The test equipment manufacturers are increasing their instrument features and making the instruments more powerful, meanwhile the C/ATLAS language is `stuck on the standard' and unable to follow the technology improvement. Solution: Addition to C/ATLAS language of new modifiers to extract all the power of ATE instrumentation. The ATE being developed at OGMA-Portugal (OGMATS), is a good example of coexistence between standard Atlas constructs and extensions regarding the compatibility with the basic language definition. This paper shows some examples of extensions and the advantages. Our objectives are: 1/ maintain C/ATLAS compatibility; 2/take advantage of instrument new features View full abstract»

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  • Diagnostic Inference Model error sources

    Publication Year: 1994 , Page(s): 391 - 397
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (484 KB)  

    Application of tools such as WSTA, DARTS, STAT and STAMP is now widely accepted as a viable approach to determining the testability of systems and developing rigorous and efficient test strategies. These tools an have one thing in common-the dependency model, more recently known as the diagnostic inference model. The author discusses error sources that can corrupt a dependency model and introduce significant error into the testability predictions and diagnostic sequence recommendations provided by inference model based tools View full abstract»

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  • An overview of the support equipment data acquisition and control system

    Publication Year: 1994 , Page(s): 563 - 570
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (740 KB)  

    The C-17 program developed Test Program Sets (TPS) at a single location. The concurrent aircraft avionics development plus the wide geographic C-17 avionics supplier base could have proven a significant roadblock to TPS deliveries. Support Equipment Data Acquisition and Control System (SEDACS) controls the communication links for TPS development and supplier electronic data. The benefits are a versatile conversational link with both data suppliers and users. Engineering productivity and centralized configuration management by SEDACS successfully provided a key tool for product deliveries to the first C-17 operational squadron, the 437th Airlift Wing at Charleston Air Force Base View full abstract»

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  • An expert systems approach for automating performance analysis of the air launch cruise missile tests

    Publication Year: 1994 , Page(s): 515 - 525
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (664 KB)  

    Ten years of automated field test data has been collected on random intervals for the required air launch cruise missile (ALCM) Level I primary stationary ground test quality control of ALCM testing can substantially be improved with proper utilization of the Level I database. Economic benefits derived from automating the Level I analysis provide the incentives to develop the expert system. An expert system will transform the raw data into relevant information concerning problem tests and problem missile serial numbers. The expert system approach will provide the means to examine the validity of ALCM Level I test data that varies over time. The expert system will provide trend analysis on test numbers which degrade over time, provide statistical information on consistently marginal test numbers, and expose missiles that do not perform well View full abstract»

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  • Factory to fleet maintenance concept

    Publication Year: 1994 , Page(s): 15 - 18
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (256 KB)  

    The recent designation of CASS (Consolidated Automated Support System) as part of DoD's standard family of ATS gives us the opportunity to successfully implement the “Factory to Fleet” concept. CASS is a tool that can help meet the challenge of cost effective ATS for DoD in the 21st century. The requirements enhanced maintenance as close to the source as practical. CASS can be a tool to help meet the requirement in a cost effective approach. “Factory to Fleet” testing will not occur on its own. It will require detailed planning early in the product life to develop an integrated development/test strategy that allows for factory acceptance testing, TPS development and life cycle support. Testability/diagnostics and life cycle maintenance must be integrated into the design process. Cooperation and communication between the program acquisition requirements and the OEM must be achieved. Successful implementation can provide significant marketing advantages both domestically and foreign View full abstract»

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  • Diagrammatic-graphical programming languages and DoD-STD-2167A

    Publication Year: 1994 , Page(s): 211 - 220
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (388 KB)  

    Many times it is assumed that diagrammatic programming environments such as National Instruments' LabVIEW and Hewlett-Packard's VEE-Test cannot be used for DoD software because of requirements to conform to DoD-STD-2167A. Frontier Engineering has developed government-acceptable TPS's in graphical programming environments to DoD-STD-2167A, by defining the following: a coding standard to address presentation and use of language features; a complexity metric to gauge the relative size and complexity of CSUs; an SDD format that addresses relevant requirements from DI-MCCR-80012A; configuration-management methods View full abstract»

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  • Tri-service automatic test system R&D program

    Publication Year: 1994 , Page(s): 485 - 489
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (408 KB)  

    Recent changes in the state-of-the-art in software development and test instrumentation has provided the Department of Defense with opportunities to reduce the cost of its automatic test systems (automatic test equipment and the software and information required to drive that equipment). In order to guide and enhance this evolution, the three Services (USN, USAF, USA) have developed an automatic test system research and development program consisting of three broad areas; automatic test system functional interface convergence, next generation test environment, and automatic test system modernization methods. This program, when funded, will provide the technology necessary to transition to the open architecture test systems of the future. The balance of this paper covers the eleven identified tasks under these broad areas, and how they form a coordinated, integrated basis for an improved acquisition strategy View full abstract»

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  • RF/microwave test simulator

    Publication Year: 1994 , Page(s): 199 - 203
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (320 KB)  

    The generation of quality RF/Microwave Test Program Sets (TPS) has always been a technically challenging and expensive task. The lack of an RF/microwave test simulator makes the generation of test and diagnostic vectors a very time consuming task. RF/microwave components exhibit multiple fault modes, i.e. gain, noise figure, etc..., as compared to the “1” or “0” fault mode of digital circuitry. Also, due to the parametric nature of an RF/microwave device, each failure mode is application specific and forces the development of multiple fault classes. The result has increased TPS costs and stretched schedules when compared to digital testing where test simulators do exist. This paper outlines an approach to developing an RF/microwave Test Simulator. Design simulation software is utilized to provide a behavioral model of the Unit Under Test (UUT). A multi-dimensional fault dictionary is generated based on this behavioral knowledge which enables the tester to consider the multiple fault modes and fault classes in order to achieve “probeless” diagnostics View full abstract»

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