I've had my weather station (Davis Pro2 with Envoy) up and running for 7 years and have never had a problem. The software is WeatherCat running on an iMac. All of a sudden I'm getting strange results. The WeatherCat gauge window reports a communications error and hangs, so I have to force quit the software, and when restarted, it seems to run fine for a day or so. (It's as if the envoy is pulling an interrupt, but not giving any data up to the software.)
I looked in the data and here are some suspicious lines:
23476 t:170716 T:7.44 Ti:16.83 D:5.42 Pr:1001.1819 W:11.27 Wd:270 Wc:5.34 Wg:24.14 Ph:0.00 P:3.56 H:87 Hi:58 S:0 U:0.0 Pm:49.79 Py:720.86 Ed:0.00 Em:0.00 Ey:0.00 Sy1:0.00 Sy2:0.00 Sy3:0.00 Sy4:0.00 Sy5:0.00 C:"N/A" V:4
23506 t:170746 T:7.44 Ti:16.83 D:5.42 Pr:1001.1819 W:11.27 Wd:270 Wc:5.34 Wg:24.14 Ph:0.00 P:3.56 H:87 Hi:58 S:0 U:0.0 Pm:49.79 Py:720.86 Ed:0.00 Em:0.00 Ey:0.00 Sy1:0.00 Sy2:0.00 Sy3:0.00 Sy4:0.00 Sy5:0.00 C:"N/A" V:4
23536 t:170816 T:7.44 Ti:16.83 D:5.42 Pr:1001.1819 W:11.27 Wd:270 Wc:5.34 Wg:24.14 Ph:0.00 P:3.56 H:87 Hi:58 S:0 U:0.0 Pm:49.79 Py:720.86 Ed:0.00 Em:0.00 Ey:0.00 Sy1:0.00 Sy2:0.00 Sy3:0.00 Sy4:0.00 Sy5:0.00 C:"N/A" V:4
23566 t:170846 T:7.44 Ti:16.83 D:5.42 Pr:1001.1819 W:11.27 Wd:270 Wc:5.34 Wg:24.14 Ph:0.00 P:3.56 H:87 Hi:58 S:0 U:0.0 Pm:49.79 Py:720.86 Ed:0.00 Em:0.00 Ey:0.00 Sy1:0.00 Sy2:0.00 Sy3:0.00 Sy4:0.00 Sy5:0.00 C:"N/A" V:4
I don't know what the Sy1 - Sy5 indicate, but they don't appear on other lines.
I've replaced batteries in the weather station itself and in the envoy (which also has plug power).
One can see strange activity on some of the graphs on my weather page.
Has anyone seen this kind of problem and are there any suggestions as to how to fix it?
--Rick
http://www.timberhillassociation.org/weather/