47 Advanced OperationUsing the SERIAL connectorThe serial connector which is on the side connector panel of the projectorconforms to the RS-232C interface specification, so that the projector can becontrolled by a personal computer which is connected to this connector.ConnectionNOTE:• Use a proper communicationcable which is suitable for thepersonal computer to connect theserial connector and the personalcomputer.Pin layout and signalnames for SERIALconnectorD-Sub9p (male)Communication cableSERIAL(female)ComputerBasic formatThe data sent from the computer tothe projector is transmitted in theformat shown below.NOTE:• The projector can not receive thecommand for 10 seconds after thelamp is switched on. Wait 10seconds before sending thecommand.• If sending multiple commands,check that a response has beenreceived from the projector for onecommand before sending the nextcommand.• When a command which does notrequire parameters is sent, thecolon (:) is not required.• If an incorrect command is sentfrom the personal computer, the“ER401” command will be sentfrom the projector to the personalcomputer.Communications settings1 56 9D-SUB 9-pin connector seen fromoutsideSignal level RS-232CAsynchronousSync. methodBaud rateParity9 600 bpsNoneCharacter length 8 bitsStop bit 1 bitX parameter NoneS parameter NoneSTX Command : Parameter ETXStart byte(02h) 3 bytes1 byte1 byte–5 bytesEnd byte(03h)PinNo.Signalname Contentsq NCw TXD Transmitted datae RXD Received datar NCt GNDy DSRu CTS Connected internallyi RTSNCo
