ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / Today's telemetry systems need to be highly configurable and easily extensible to support a constantly growing number of data acquisition/transmitting components from different manufacturers. One way to achieve this goal is through a standardized descriptive language that can define the system structure as well as end-node devices. The integrated Network Enhanced Telemetry (iNET) program has explored such a possibility by creating a series of standards to define how devices are configured and interoperate with each other. As one of the standards created by the iNET program, the Metadata Description Language (MDL) specifies a common interchange language that defines and configures a Telemetry Network System (TmNS). MDL Instance Documents are used to exchange test requirements, data formats and configuration information among the devices within a TmNS system. MDL, together with other standards created in the iNET program, serve as a foundation for assembling a modern telemetry system. This paper starts with an overview of the MDL-based system description architecture. A typical configuration workflow of an MDL-based system is then described. iNET functionality implementations for new and legacy devices are used as examples to illustrate the power of MDL-based design, as well as the challenges and issues associated with the implementation of the MDL standard. We explain and evaluate the design decisions for a new product, the L-3 NetDAS Recorder, as the case study. We also discuss how a legacy Data Acquisition Unit (DAU) acting as an LTC Data Source Unit can be updated to support MDL based iNET functionality. Our practice shows that more efficient data acquisition systems can be designed and implemented using the metadata definition language as a core tool for equipment and system description. We conclude the paper with design tradeoffs and discussions.

International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California / MIL-STD-1553 has served the flight community well. However, in recent years several new high-speed bus standards have emerged that outperform 1553 in various respects such as data throughput and increased address space. During this time, mission requirements - including video and audio - have become more data intensive. Although some of these busses were not initially designed for the avionics industry (such as Ethernet, FireWire, and FibreChannel), they are potentially of interest as high-speed commercial off-the-shelf (COTS) solutions for both set-up and data acquisition. These busses offer not only improved overall system performance, in terms of aggregate sampling rates, but also simplify existing data acquisition system architectures. They require fewer high-bandwidth links which can serve for both set-up and data. This paper examines some of these issues, focusing in particular on IEEE1394, better known as FireWire.

ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NV / In modern flight test installations there is a continuing trend to move the data acquisition closer to the sensors. As a consequence the data acquisition chassis needs to be mounted in locations that are small, inaccessible and subject to harsh environmental conditions. On top of this there are an increasing number of measurements required for each new flight test campaign. This paper discusses the challenges of designing a small lightweight data acquisition chassis which can provide hundreds of channels of measurement capability while operating in tight spaces which are exposed to fluids, high vibration and extremes of temperature. The paper suggests ways of designing and installing the data acquisition chassis in order to optimize the available installation space while mitigating the effects of the harsh environmental conditions.

International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / The Common Airborne Instrumentation System (CAIS) was developed under the auspices of the Department of Defense to promote standardization, commonality, and interoperability among flight test instrumentation. The central characteristic of CAIS is a common suite of equipment used across service boundaries and in many airframe and weapon systems. The CAIS system has many advanced capabilities which must be tested during ground support and system test. There is a need for a common set of low cost, highly capable ground support hardware and software tools to facilitate these tasks. The ground support system should combine commonly available PC-based telemetry tools with unique devices needed for CAIS applications (such as CAIS Bus Emulator, CAIS Hardware Simulator, etc.). An integrated software suite is imperative to support this equipment. A CAIS Ground Support Unit (GSU) has been developed to promote these CAIS goals. This paper presents the capabilities and features of a PC-based CAIS GSU, emphasizing those features that are unique to CAIS. Hardware tools developed to provide CAIS Bus Emulation and CAIS Hardware Simulation are also described.

International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The US Government originally funded the development of the Common Airborne Instrumentation System (CAIS) to address industry-wide compatibility, maintenance, and commonality issues. Although initially targeted for US Department of Defense (DoD) programs, CAIS is also being used throughout the world in many commercial applications. This paper provides a fresh look at the evolution of the CAIS concept starting with some historical background of the CAIS Program, an overview of the CAIS System Architecture and recent trends in the use of “Commercial Off The Shelf (COTS)” products and technology.

The classical Nykodym theorem (1933) asserts that a set H of countably additive complex measures defined on a sigma-algebra S which is bounded for each element of S, then H is uniformly bounded on S. It is well known that this theorem fails if we replace the sigma-algebra S simply by an algebra. Let A be the algebra of subsets of a nonempty set, and consider the Banach space ba(A) of all real (or complex) finitely additive measures of bounded variation defined on A. A subset B of A is said to have the N-property (Nikodym property) if every B-pointwise bounded subset M of ba(A) is uniformly bounded on A. Recall the classical Nikodym-Dieudonné-Grothendieck's theorem which says that each sigma-algebra has the N-property. Moreover B is said to have the strong N-property if for each increasing countable covering (B_{m})_{m} of B there exists B_{n} which has the N-property. Valdivia proved in 1979 that each sigma-algebra has the strong N-property. The aforementioned Valdivia's theorem motivated to prove that each sigma-algebra S of subsets of a set has web-N-property, that is, if (B_{m_1})_{m_1} is an increasing countable covering of S and if (B_{m_1},_{m_2},....,_{m_p},_{m_{p+1}})_{m_{p+1}} is an increasing countably covering of B_{m_1},_{m_2},....,_{m_p}, for each natural numbers p, mi, with i = 1, 2,..., p, then there exists a sequence (n_{r})_{r} such thatB_{n_1},_{n_2},....,_{n_r} has the N-property for every r = 1, 2, 3, ...... . In this thesis it is proved that nearly all infinite chains in the increasing web (B_{m_1},_{m_2},....,_{m_p}: m_i=1,2,... , i=1,2,...,p, and p=1,2,.....} are composed of sets that have web-N-property. In the main result in this thesis it is proved that the algebra J(K) of Jordan measurables subsets of a compact k-dimensional interval K contained in R^k has the web-N-property. This result imporves the 2013 Valdivia's theorem stating that J(K) has the strong Nikodym property, which in turns was a grest improvement of Schachermayer's result of N property of J([0; 1]). The analysis of the demonstration of this result has allowed us give a sufficient condition in an algebra of subsets of a set that implies the property **wN. This sufficient condition is verified by each sigma-algebra as well as by the algebra J(K), whence the properties wN of any sigma-algebra and of J(*K) could have been presented like corollaries of this sufficient condition. It has seemed more natural to follow the chronological order, such as it has done in the Thesis. In the chapter 5 the problem proposed by Valdivia in 2013 is considered, i.e., to prove if it is true or not that when an algebra A of subsets have the property N then it has the property sN. In the section 5.2 this problem is considered in the most general context of normed spaces, because a subset B of an algebra A has the property N if each subset M of finitely additive bounded measures pointwise bounded in the sets of B verifies that M is a bounded subset of the Banach space of bounded finitely additive measures in the algebra A endowed with the supreme norm, what carries to the study of the sets DAU that determine the uniform boundedness of a normed space. Several applications of the obtained results to problems of location of vectorial averages and of convergence of sequences as well as several open problems are presented. The limitation of number of characters prevents to comment other results. We finish this summary indicating that we have proved that the properties wN, w(sN) and w(wN) are equivalents. / El clásico teorema de Nykodym (1933) afirma que si un subconjunto H de medias complejas numerablemente aditivas definidas en una sigma-algebra S está acotado en cada elemento de S, entonces H está uniformente acotado en S. Es bien conocido que este teorema no es cierto en general si se sustituye la sigma-álgebra S por un álgebra. Sea A un álgebra de subconjuntos de un conjunto no vacío, y consideremos el espacio de Banach ba(A) de las medias reales (o complejas) finitamente aditivas de variación acotada definidas en A. Un subconjunto B of A se dice que tiene la propiedad N (propiedad de Nikodym) si para cada subconjunto M of ba(A) que sea B-puntualmente acotado se tiene que M es uniformemente acotado en A. Recordemos que el clásico teorema de Nikodym-Dieudonné-Grothendieck's dice que cada sigma-algebra tiene la propiedad N. Además se dice que B tiene la propiedad N-fuerte si cada para cada cubrimiento numerable creciente (B_{m})_{m} de B existe B_{n} que tiene la propiedad N. Valdivia demmostró en 1979 que cada sigma-algebra tiene la propiedad N-property. Este teorema de Valdivia motivó demostrar que cada sigma-algebra S de subconjuntos de un conjunto tiene la propiedad N para mallas crecientes, es decir, si (B_{m_1})_{m_1} es un cubrimiento numerable creciente de S y si (B_{m_1},_{m_2},....,_{m_p},_{m_{p+1}})_{m_{p+1}} es un cubrimiento numerable creciente de B_{m_1},_{m_2},....,_{m_p}, para cada números naturales p, mi, con i=1, 2,..., p, entonces existe una sucesión (n_{r})_{r} tal que B_{n_1},_{n_2},....,_{n_r} tiene la propiedad N para cada r = 1, 2, 3, ...... . En la tesis se prueba que casi todas las cadenas infinitas en una malla creciente (B_{m_1},_{m_2},....,_{m_p}: m_i=1,2,... , i=1,2,...,p, and p=1,2,.....} están compuestas de conjuntos que tienen la propiedad N para mallas crecientes. El resultado principal de la tesis prueba que el algebra J(K) de los subconjuntos Jordan medibles de un intervalo compacto k-dimensional K contenido en R^k tiene la propiedad N para mallas crecientes. Este resultado mejora el resultado de Valdivia de 2013 de que J (K) tiene la propiedad fuerte de Nikodym, que a su vez mejoraba un resultado anterior de Schachermayer, quien probó que J ([0; 1]) tiene la propiedad N. El análisis de la demostración de este resultado nos ha permitido dar una condición suficiente en un álgebra de subconjuntos de un conjunto que implica la propiedad wN. Esta condición suficiente la verifican tanto las sigma-álgebras como el álgebra J (K), por lo que las propiedades wN de cualquier sigma-álgebra y de J(K) se podían haber presentado como corolarios de dicha condición suficiente. Ha parecido más natural seguir el orden cronológico, tal como se ha hecho en la Tesis. En el capítulo 5 se considera el problema planteado por Valdivia en 2013. Consiste en averiguar si el que un álgebra A de conjuntos tenga la propiedad N implica o no el tener la propiedad sN. En la sección 5.2 se considera este problema en el contexto más general de los espacios normados, pues un subconjunto B de un álgebra A tiene la propiedad N si cada subconjunto M de medidas acotadas, finitamente aditivas y puntualmente acotadas en el conjunto de funciones características de los conjuntos de B verifica que M es un subconjunto acotado del espacio de Banach de dichas medias finitamente aditivas y acotadas definidas en A con la norma supremo, lo que lleva al estudio de los conjuntos DAU que determinan la acotación uniforme en un espacio normado. Se presentan varias aplicaciones de los resultados obtenidos a problemas de localización de medias vectoriales y de convergencia de sucesioens de medias y varios problemas abiertos. La limitación de número de caracteres impide comentar otros resultados. Terminamos este resumen indicando que hemos probado que las propiedades wN, w(sN) y w(wN) son equivalentes. / El clàssic teorema de Nykodym (1933) afirma que si un subconjunt H de mesures complexes numerablement aditives defiides en una sigma-àlgebra S és acotat en cada element de S, aleshores H és uniforment acotat en S. És ben conegut que aquest teorema no és cert en general si es sustitueix la sigma-àlgebra S simplement per una àlgebra. Siga A una àlgebra de subconjunts d'un conjunt no buit, i considerem l'espai de Banach ba(A) de les mesures reals (o complexes) finitament aditives de variació acotada definides en A. Un subconjunt B de A es diu que té la propietat N (propietat de Nikodym) si cada subconjunt M de ba(A) que siga B-puntualment acotat es té que M és uniformement acotat en A. Recordem que el clàssic teorema de Nikodym-Dieudonné-Grothendieck's diu que cada sigma-àlgebra té la propietat N. A més a més es diu que B té la propietat forta N si per a cada cubrimient numerable creixent (B_{m})_{m} de B existeix B_{n} que té la propietat N. Valdivia va provar en 1979 que cada sigma-àlgebra té la propietat N. L'esmentat teorema de Valdivia va motivar demostrar que cada sigma-àlgebra S de subconjunts de un conjunt té la propietat N per a malles creixents, és dir, si (B_{m_1})_{m_1} és un cubrimient numerable creixent de S i si (B_{m_1},_{m_2},....,_{m_p},_{m_{p+1}})_{m_{p+1}} és un cubrimient numerable creixent de B_{m_1},_{m_2},....,_{m_p}, per a cada nombres naturals p, mi, amb i = 1, 2,..., p, aleshores existeix una successió (n_{r})_{r} tal que B_{n_1},_{n_2},....,_{n_r} té la propietat N per a cada r = 1, 2, 3, ...... . En la tesi es prova que gairebé totes les cadenes infinites en una malla creixent (B_{m_1},_{m_2},....,_{m_p}: m_i=1,2,... , i=1,2,...,p, and p=1,2,.....} estan composades de conjunts que tenen la propietat N per a malles creixents. El resultat principal de la tesi prova que l'àlgebra J(K) dels subconjunts Jordan mesurables d'un interval compacte k-dimensional K contingut en R^k té la propietat N per a malles creixents. Aquest resultat millora el resultat de Valdivia de 2013 de que J (K) té la propietat forta de Nikodym, que alhora millorava un resultat anterior de Schachermayer, qui va provar que J([0; 1]) té la propietat N. L'anàlisi de la demostració d'aquest resultat ens ha permès donar una condició suficient en un àlgebra de subconjunts d'un conjunt que implica la propietat wN. Aquesta condició suficient la verifiquen tant les sigma-àlgebres com l'àlgebra J(K), per la qual cosa les propietats wN de qualsevol sigma-àlgebra i de J(K) es podien haver presentat com a corol·laris d'aquesta condició suficient. Ha semblat més natural seguir l'ordre cronològic, tal com s'ha fet en la Tesi. En el capítol 5 es considera el problema plantejat per Valdivia en 2013. Consisteix a esbrinar si el que un àlgebra A de conjunts tinga la propietat N implica o no el tenir la propietat sN. En la secció 5.2 es considera aquest problema en el context més general dels espais normados, doncs un subconjunt B d'un àlgebra A té la propietat N si cada subconjunt M de mesures acotades, finitament additives i puntualment acotades en el conjunt de funcions característiques dels conjunts de B verifica que M és un subconjunt acotat de l'espai de Banach d'aquestes mesure finitament additives i acotades definides en A amb la norma suprem, la qual cosa porta a l'estudi dels conjunts DAU que determinen l'acotació uniforme en un espai normat. Es presenten diverses aplicacions dels resultats obtinguts a problemes de localització de mitjanes vectorials i de convergència de **sucesioens de mitjanes i diversos problemes oberts. La limitació de nombre de caràcters impedeix comentar altres resultats. Acabem aquest resum indicant que hem provat que les propietats wN, w(sN) i w(wN) són equivalents. / López Alfonso, S. (2016). Conjuntos que determinan la acotación uniforme [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/75266 / TESIS