Introduction to the FASTBUS standard data bus

Larsen, R. S.

doi:10.1016/0252-7308(82)90005-8

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…FASTBUS modules [3], even though known for their high channel density and thus long total module conversion times, usually had multi-event buffers, allowing readout of previous events while converting new ones, completely hiding the readout.…”

Section: Existing Solutionsmentioning

confidence: 99%

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VME Readout at and Below the Conversion Time Limit

Münch

Jensen

Löher

et al. 2019

IEEE Trans. Nucl. Sci.

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The achievable acquisition rates of modern triggered nuclear physics experiments are heavily dependent on the readout software, in addition to the limits given by the utilized hardware. This paper presents an asynchronous readout scheme that significantly improves the livetime of an otherwise synchronous triggered VME-based data acquisition system. A detailed performance analysis of this and other readout schemes, in terms of the basic data transfer operations, is described. The performance of the newly developed scheme as well as synchronous schemes on two systems has been measured. The measurements show excellent agreement with the detailed description. For the second system, which previously used a synchronous readout, the deadtime ratio is at a 20 kHz trigger request frequency reduced by 30 % compared to the nearest contender, allowing 10 % more events to be recorded in the same time. The interaction between the network and readout tasks for single-core processors is also investigated. A livetime ratio loss of a few percent can be observed, depending on the size of the data chunks given to the operating system kernel for network transfer. With appropriately chosen chunk size, the effect can be mitigated.

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Section: Existing Solutionsmentioning

confidence: 99%

“…by using the IACK backplane chain for communicating a token between the modules 2. Motorola's Embedded Communications Computing business was acquired by Emerson in 2007 3. CES was acquired by Mercury Systems, Inc. in 2016.…”

mentioning

confidence: 99%

VME Readout at and Below the Conversion Time Limit

Münch

Jensen

Löher

et al. 2019

IEEE Trans. Nucl. Sci.

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“…At a lower end, slower processes and experiments, where the cost of introducing CAMAC was somewhat prohibitive, led to nearly parallel development of the General Purpose Interface Bus (GPIB), soon standardized as IEEE Std 488 [32]. At the high end, speed and volume requirements of high-energy physics experiments soon led to the development of a Fastbus standard [33]- [34]. Since this paper focuses on the progress and evolution in instrumentation interfaces, we only make a brief note on Fastbus.…”

Section: Note On Fastbusmentioning

confidence: 99%

From Camac to Wireless Sensor Networks and Time-Triggered Systems and Beyond: Evolution of Computer Interfaces for Data Acquisition and Control. Part I

Zalewski¹

2016

IJC

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The objective of this paper is to present a historical overview of design choices for data acquisition and control systems, from the first developments in CAMAC, through the evolution of their designs operating in VMEbus, Firewire and USB, to the latest developments concerning distributed systems using, in particular, wireless protocols and time-triggered architecture. First part of the overview is focused on connectivity aspects, including buses and interconnects, as well as their standardization. More sophisticated designs and a number of challenges are addressed in the second part, among them: bus performance, bus safety and security, and others.

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