DG3 Controller – Installation and Operation
Manual
540846-3 page 8 of 64 25/09/2015
RS485 - the main electrical communications standard used for communications between signs and
controller
RTC - Real Time Clock
RX - reception channel of serial port
SAE J1708 - communications standard. SAE International, formerly the Society of Automotive Engineers,
is a U.S.-based, globally active professional association and standards organisation for engineering
professionals in various industries
sign - equipment used to present text and graphics for viewing by passengers, usually located on the front,
side or rear of, or inside a bus
Super-X - display control language for determining the way text is presented on a sign
TX - transmit channel of serial port
UTC - Coordinated Universal Time: the primary time standard by which the world regulates clocks and
time. It is one of several closely related successors to Greenwich Mean Time (GMT). For most purposes,
UTC is synonymous with GMT
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