LIGO Document E1600261-v1

ECR Timing System: 0.5Hz LED Fix

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E - Engineering documents
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We propose to upgrade the FPGA code in the timing system to eliminate the blinking LEDs during normal operations. The current LED typically have 3 states: off, on and blinking. This will be changed to off, blinking and on. We will also add a diagnostics capabilities to request individual timing boards to blink at a specified frequency.
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ECR timing

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