1. Cov ntim me me, cov qauv tsim tshwj xeeb, kev ua haujlwm yooj yim.
2. Yuav tsum haum rau kev tiv thaiv tsis taus pa, yuam kom hloov pauv. Tsis siv neeg xoom -tracking, cia xoom thaum fais fab ntawm. Kev sib txuas lus sib cuam tshuam.
3. Los ntawm kev nres nkoj hauv kev nres tsheb calibration qhov ntsuas hluav taws xob hnyav (chaw nres nkoj serial calibration hloov).
4. RS485 tawm.
5. Lub zog txuag kev ua haujlwm: Nkag mus rau cov hluav taws xob txuag tau tom qab txog 5 feeb ntawm kev ua haujlwm tsis muaj nyees