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Networked VAX/LSI/CAMAC Data Acquisition System Development

Melvin, J. D. and Mendenhall, M. H. and Tombrello, T. A. and Clark, D. L. (1983) Networked VAX/LSI/CAMAC Data Acquisition System Development. IEEE Transactions on Nuclear Science, 30 (5). pp. 3816-3822. ISSN 0018-9499. doi:10.1109/TNS.1983.4333017.

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Recent development of the Caltech data acquisition system installed in 1981, which runs on a VAX-11/750, a Peritek Q-bus network, LSI-11s, and CAMAC, is described. In this system, the DEC VMS and RT-11 operating systems are supported on the VAX "host" and LSI-11 "front-end" computers by a VMS device driver and network host program, and a bootable RT-11 device driver. Network "utility" and "control" programs provide general purpose support for communication between front-end and host software. Data acquisition software tools are provided for writing programs to run nuclear physics experiments. A system similar to Caltech's was installed at the University of Rochester in 1982. The network has been tested for speed and real-time response. After including all software overhead required by data acquisition, it was found that the system could transfer buffers and acknowledge their receipt at a net speed of 127 KB per second with a 35% load on the host computer. The network software is currently being rehosted on Ethernet hardware at Caltech in a multiple host - many front-end computer configuration. Compatibility with the current Peritek network software will be maintained.

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Clark, D. L.0000-0002-1203-764X
Additional Information:© IEEE. Date of Current Version: 12 November 2007. Thanks are due to the following Contributors to the systems described in this paper: At the W.K. Kellogg Radiation Laboratory, Caltech, K. McLoughlin, D. Potterveld, R. McKeown; in the Engineering Division at Caltech, P. Dimotakis; at the Nuclear Structure Research Laboratory, Uni versi ty of Rochester, T. Lund and P. Blazer. This project has been supported in part by NSF grants PHY79-23638 at the California Institute of Technology and PHY79-23307 at the University of Rochester. The rehosting of the network on Ethernet has also been supported in part by the Engineering Division of the California Institute of Technology.
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Caltech Engineering DivisionUNSPECIFIED
Issue or Number:5
Record Number:CaltechAUTHORS:20141107-134456391
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Official Citation:Melvin, J.D.; Mendenhall, M.H.; Tombrello, T.A.; Clark, D.L., "Networked VAX/LSI/CAMAC Data Acquisition System Development," Nuclear Science, IEEE Transactions on , vol.30, no.5, pp.3816,3822, Oct. 1983 doi: 10.1109/TNS.1983.4333017
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51450
Deposited On:07 Nov 2014 22:22
Last Modified:10 Nov 2021 19:11

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