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Giga-bit VLBI Data Recorder, New Concept of Formatter Independent

Published online by Cambridge University Press:  12 April 2016

J. Nakajima ,
Y. Koyama ,
M. Sekido ,
H. Kiuchi ,
S. Hama ,
T. Kondo ,
Y. Takahashi ,
N. Kawaguchi ,
Y. Chikada  and
M. Miyoshi
J. Nakajima
Affiliation:
Communications Research Laboratory, 893 Hirai Kashima Ibaraki 314, Japan
Y. Koyama
Affiliation:
Communications Research Laboratory, 893 Hirai Kashima Ibaraki 314, Japan
M. Sekido
Affiliation:
Communications Research Laboratory, 893 Hirai Kashima Ibaraki 314, Japan
H. Kiuchi
Affiliation:
Communications Research Laboratory, 893 Hirai Kashima Ibaraki 314, Japan
S. Hama
Affiliation:
Communications Research Laboratory, 893 Hirai Kashima Ibaraki 314, Japan
T. Kondo
Affiliation:
Communications Research Laboratory, 893 Hirai Kashima Ibaraki 314, Japan
Y. Takahashi
Affiliation:
Communications Research Laboratory, 893 Hirai Kashima Ibaraki 314, Japan
N. Kawaguchi
Affiliation:
National Astronomical Observatory, 2-21-1 Osawa Mitaka Tokyo 181, Japan
Y. Chikada
Affiliation:
National Astronomical Observatory, 2-21-1 Osawa Mitaka Tokyo 181, Japan
M. Miyoshi
Affiliation:
National Astronomical Observatory, 2-21-1 Osawa Mitaka Tokyo 181, Japan

Abstract

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A high performance VLBI recorder project using advanced digital technology started in 1995. TOSHIBA GBR 1000 and VLBI interface define 32 parallel, 32 MHz clock standard digital interface and support transparent recording/play-back to extremely high-speed digital bit stream. This is the formatter independent scientific recording bind the UTC to observed data. This highly reliable, low-bit-error-rate (10−16) recording system is also expected to be used in other scientific field. For the first example to examine the recorder performance in VLBI, we had been prepared 1024 Mbps sampler (256/512/1024 MSps, 2 bit, 4/2/1 ch). And here, an experimental giga-bit correlator specification for these VLBI acquisition system is introduced.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 164: Radio Emission from Galactic and Extragalactic Compact Sources , 1998 , pp. 395 - 396
Copyright
Copyright © Astronomical Society of the Pacific 1998

References

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