Page 4-14 GIA 63 Installation ManualRevision T 190-00303-054.3 GIA System ID ProgramThe GIA 63(X) utilizes a hard strapping method to assign a unit ID to a unit. Unit ID’s identify a unit asa #1, #2, #3, or #4 GIA.GIA SYSTEM ID PROGRAM*1 (P604, Pin 22)GIA SYSTEM ID PROGRAM*2 (P604, Pin 23)UNIT NUMBEROpen Open #1Ground Open #2Open Ground #3Ground Ground #44.4 Serial Data4.4.1 Serial Data Electrical Characteristics4.4.1.1 RS-232Pin Name Connector Pin I/OMAIN RS-232 IN 1 P603 41 InMAIN RS-232 OUT 1 P603 43 OutMAIN RS-232 IN 2 P603 44 InMAIN RS-232 OUT 2 P603 46 OutMAIN RS-232 IN 3 P603 47 InMAIN RS-232 OUT 3 P603 49 OutMAIN RS-232 IN 4 P603 50 InMAIN RS-232 OUT 4 P603 52 OutMAIN RS-232 IN 5 P603 53 InMAIN RS-232 OUT 5 P603 55 OutMAIN RS-232 IN 6 P603 56 InMAIN RS-232 OUT 6 P603 58 OutMAIN RS-232 IN 7 P603 59 InMAIN RS-232 OUT 7 P603 62 OutMAIN RS-232 IN 8 P603 63 InMAIN RS-232 OUT 8 P603 65 OutThe RS-232 outputs conform to EIA Standard RS-232C with an output voltage swing of at least ± 5Vwhen driving a standard RS-232 load.DRAFT Rev T 11/12/2010