Since the EIA-485 port transmitted the signals in different mode, the port IC of all the connected equipment are directly connected in the electric circuit. In the engineering application, the electric surge impact resulting from the various factions will destroy the port IC of all the equipment. This makes the whole lighting control system to a paralysis state. How can make the lighting control system work safely and reliability?

The standard of DMX512 restricts the length of the data transmitting cable to ensure the decrease of the digital signals in the suitable range. In the engineering application, the length of the data transmitting cable sometimes has to be longer than the allowed length. How can we accord the DMX512 standard and satisfy the engineering application?

EIA-485 prescribes that the number of the equipment connected in a data bus can't exceed 32. In the engineering application, specially in the large the engineering application, the number of the equipment connected in a data bus exceed 32 largely. How can we accord the DMX512 standard and satisfy the engineering application?

In the engineering application, CODE SDA4 Distributor can solve the above problems.

CODE SDA 4 has 3 main functions: relaying, tidying and amplifying the signals function, light isolated function, and 4 channel distributing function.

There are 5 independent light isolated port (1 input, 4 output) in the system. The trouble locale can be isolated, and so the whole lighting control net is prevented from the paralysis state.

Since the signals are relayed, tidied and amplified, the length of the cable can be prolonged to a double length in theory. 4 isolated ports are equivalent to prolonging the length of the cable to 4 times. Another 1 DMX direct port is used to connect other equipment (not isolated ports).