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Published byBrodie Tone Modified over 10 years ago
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256 channel data acquisition system for VISTA focal plane to readout sixteen 2k x 2k VIRGO detectors Largest ever such system
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The ESO’s Infrared Array Control Electronics, IRACE, is used to control and read out the VISTA focal plane, which contains sixteen 2k x 2k Raytheon VIRGO detectors.
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The IRACE system has been adapted for the VISTA IR camera. It contains 27 VME size boards, which are distributed in three separate VME crates, sixteen boards are ADC boards each board accommodating 16 video channels.
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All three boxes are connected together by digital isolated differential signal cables to distribute the system clock, the convert pulses and some other control signals. In this way we can synchronize all ADC’s without timing jitter and ground loops.
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First light of the system with four VIRGO bare multiplexers at the Rutherford Appleton Laboratory.
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