Some newer mac os x versions may be in conflict with USB dongle’s driver (chipset = CH340) leading to a computer crash when the dongle is inserted in any USB port. The problem is solved by removing the old driver and installing a new one (more details and help here or here).
A functional setup should see data coming from the Charge Doctor, check it using an ascii console set at 9600 bds.
Data can be plotted using a grapher, for example “Plot2”. Probably not the best one because of its un-intuitive and ugly user interface but still good enough for the purpose. A free version exists (with some nag screens) and is downloadable from the App Store.
attribution : images & data by Henrik M.