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Paper: Giga-bit VLBI Data Recorder, New Concept of Formatter Independent
Volume: 144, Radio Emission from Galactic and Extragalactic Compact Sources, IAU Colloquium 164
Page: 395
Authors: Nakajima, J.; Koyama, Y.; Sekido, M.; Kiuchi, H.; Hama, S.; Kondo, T.; Takahashi, Y.; Kawaguchi, N.; Chikada, Y.; Miyoshi, M.
Abstract: A high performance VLBI recorder project using advanced digital technology started in 1995. TOSHIBA GBR1000 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.
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