The Marine navigation signal sometimes no how to repair

Marine navigator is a kind of navigator widely used in ships at present. Its basic principle is to use the basic characteristics of GPS to find the position by means of radar signal. Marine navigation is a kind of precision mechanical and electrical integrated equipment, its maintenance effectiveness directly affects the safety of navigation of ships and ship operating economy. Marine navigation signal is one of the keys to its normal use.

The ship at fault phenomenon is: the GPS signals are often on the navigator suddenly disappeared, no shipping data, close the GPS for a few minutes after the restart, GPS signals back to normal again.

1. Check and repair

The engineer went on board and found that the GPS signals output to other devices need to pass through a signal distributor (diffuser box). The signal measured from GPS at the input end of the distributor was normal. After careful inspection of the wiring port at the output end of the distributor, it was found that the wiring of one road (just to the navigator) was loose.

2. Special tips

Usually, GPS signals are output to other pass-through devices through the diffuser. In addition to loose wiring, the diffuser itself amplifies the output, which is also the main reason for no output. The direct current voltage range of the pointer type multimeter can be used for measurement.