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When I display the graph of my chamber definition window data logging stops after about an hour. What is happening?

April 26, 2017chamber Data definition display Graph happening hour logging Stops window

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When I display the graph of my chamber definition window data logging stops after about an hour. What is happening?

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A. If using Synergy Manager with a USB to RS232/RS485 converter to communicate with the physical chamber data logging will seem to stop after about an hour on versions prior to 1.28.82. Actually it has just been slowed down by the graph updating method and the latency of the USB converter. Upgrade to Synergy Manager version 1.28.82 or later. Also the parameters of the USB converter may have to be adjusted to minimize latency. Please see the user manual of the USB converter in use for details on how to accomplish this. A good application note to read is AN232B-04 “Data Throughput, Latency & Handshaking” available from the FTDI website www.ftdichip.com. FTDI makes the chips that are used in many of the USB to RS232 converter designs on the market today. The application note explains USB latency and offers some general workarounds to try.