A common problem manual, which introduces the installation, license, backup, restore, cancellation, migration, communication setting, no data returned error problem, total station in floating dock measurement should pay attention to the problem, block software black screen and installation plug-in patch problem, ecomes software measurement process will appear data loss, industrial handheld PDA sometimes appear automatic shutdown restart situation, industrial handheld PDA in a long time crash when ecomes data will be lost, the total station in the measurement time response is slow, continuous measurement interval of two seconds software will appear can not convert the result, one-time reflector due to the angle is not good can not return data, data bias, total station measurement data and tape measurement data bias, industrial handheld PDA program unstable and other problems and solutions