Zero wire and fire wire are reversed, and ground wire is not connected. Will burn the equipment?

First of all, confirm that the power supply used by your instrument is AC or DC, if AC, please confirm that the instrument is domestic or imported, domestic instruments should not be much of a problem, if the imported instruments will sometimes have a fire and zero line divided into more stringent, there is also an imported instrument used by the frequency of the voltage, China's standard for 50Hz, 60Hz abroad, sometimes also affect the instrument.

You mentioned the instrument and the computer between the digital-to-analog converter, I guess there may be 232-422/485 communication module of the thing, or a special communication module, the computer side of the general for the serial port or USB, if you are using the computer with the 232 port, from the computer design itself, he is not with surge protection, but the computer side of the computer to do if you want to do the data transceiver, USB and the same. It is the same.