ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada / The adoption of commercial off the shelf networks, such as Ethernet, FireWire and FibreChannel, within the avionics community has dramatically changed the architecture of avionics busses and instrumentation networks. Higher bandwidth links and unified interconnects simplify existing infrastructure and wiring. But due to their point-to-point nature, networking topologies are fundamentally different from systems built on legacy bus technologies such as CAIS and MIL-STD-1553. Switched networks and ring topologies pose various challenges for the implementation of network monitoring hardware, and affect the design of bus monitors and distributed data acquisition systems. This paper discusses some of these issues. In particular we address deployment issues, architectural choices such as pass-through versus tap approach, as well as handling of bandwidth requirements and complex communication protocols. We illustrate on the basis of a FireWire monitoring system how these obstacles have been overcome for one given application.

International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / On reviewing current PCM on-board data acquisition systems design is not very uncommon to find lots of useful signals being generated together with the PCM stream, such as bit clocks, word clocks, minor and major frame pulses. The purpose of this paper is to demonstrate a conceptual design of a digital recording device that takes advantage of these signals to collect data directly into a computer compatible disk file. Such device can eliminate the need of further PCM signal processing after the test and speed up the conversion process of pure digital sampling values into floating point numbers.

International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper describes the Launcher Instrumentation and Data Acquisition System (LIDAS) that has been developed for real-time monitoring and simultaneous recording of a diverse set of data buses on a moving MLRS launcher. The launcher onboard instrumentation consists of a central Bus Data Conversion Module (BDCM) and several specialized, intelligent "break-in" boxes. The break-in boxes collect and tag the data by using the IRIG-B standard time-code, and transfer them to the BDCM using a unique asynchronous scheme. The BDCM is built around an Intel 80960CA processor board in a VME bus environment. It coordinates all the data traffic and also stores selected data to an onboard Flash ROM data storage unit. The data from different MLRS buses are combined into a 1 megabits per second RS4-22 serial stream and telemetered to a ground station, where the user interface is provided through an IBM PC/AT type computer with touch-screen controls. The developed PC software offers several data monitoring options with engineering-unit conversions and allows simultaneous recording on a hard-disk. Because of its interactive capabilities, the system is also well suited for personnel training.

ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Flight test instrumentation/data processing environments consist of three components: * Airborne Data Acquisition System * Telemetry Control Room * Post Test Data Processing System While these three components require the same setup information, most often they are configured separately using a different tool for each system. Vendor supplied tools generally do not interact very well with hardware other than their own. This results in the multiple entry of the configuration information. Multiple entries of data for large complex systems are susceptible to data entry errors as well as version synchronization issues. This paper describes the successful implementation of a single Microsoft Excel based tool being used to program the instrumentation data acquisition hardware, the real-time telemetry system, and the post test data processing system on an active test program. This tool leverages the XML interfaces provided by vendors of telemetry equipment.

ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California / One of the principle goals of the Integrated Network Enhanced Telemetry (iNET) program is to help flight-test engineers configure their data acquisition systems more rapidly. This will allow them to focus more of their energies on the collection of data rather than on the design and configuration of their data acquisition hardware. Currently most flight-test engineers spend the majority of their time configuring their data acquisition systems to acquire data for test flights. Typically, the flight test engineers must manually transform the requirements that are given to them into actual measurements from the data acquisition system. This process forces the flight test engineers to become experts in the implementation details of their data acquisition systems. This paper will discuss a possible design for an automatic hardware selection system. This system would allow flight test engineers to step away from the implementation details of their data acquisition system and focus instead on the parameter data that the system is acquiring. The key design goal for this system is to create a mechanism that can automatically transform the requirements for a flight test program into a list of hardware that can accomplish the desired task.

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This paper presents an open system architecture with wireless network centric telemetry and data acquisition over UDP/IP. This networked solution was designed and developed for iron bird and helicopter rotor applications which present a significant challenge for data acquisition and telemetry. Traditionally slip rings were used for data transfer however these result in issues with low bandwidth, electrical noise, installation complexity, and high maintenance costs. This paper describes a networked system using standardized technologies and protocols that was used for data acquisition and recording of parameters such as vibration, strain, and video on DAQ installed on the rotating part. The acquired data was transmitted in real-time via the network-centric wireless telemetry link which was synchronized with a ground-based DAQ used for real time processing of the rotor data.