We had issues this past Monday with our High School Race. We run dual courses through seperate S4 boxes. Both timers would stop communicating with the laptops at the same time. The remedy was to clear the timing logs in our Nastar software and then reboot the laptops/timers. We'd get 2-3 racers and the problem would repeat. We are connecting Windows 7 laptops via coolgear USB-Serial adapters. I disconnected the AC power from both the timers and laptops and that seemed to fix the issue up until our last girl racer and then the connection was lost again. It seems like a possible AC grounding issue, but I don't know enough to trouble shoot this. Battery power is ok for the timers, but I'm not sure the laptop batteries would have enough to carry an entire race.
Anyone else have similar experiences?
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