Technical InformationENGLISH - 47 AppendixThe serial connector which is on the connector panel of the projector conforms to the RS-232C interfacespecification, so that the projector can be controlled by a personal computer which is connected to this connecter.J ConnectionJ Pin assignments and signal namesJ Communication settingsJ Basic formatThe projector can not receive any command for approximately 10 seconds after the lamp is switched onand for approximately 1 second after the cooling fan stops operating and the projector has returned tostandby mode (approximately 90 seconds after the indicator switches off).Be sure to wait until the lengths of time mentioned above have passed before sending the command.If sending multiple commands, check that a response has been received from the projector for onecommand before sending the next command.When a command which does not require parameters to be sent, the colon (:) is not required.If an incorrect command is sent from the personal computer, the ER401 command will be sent from theprojector to the personal computer.Serial terminalPin No. Signal name ContentsA B F Connected internallyC RXD Received dataD GND EarthE TXD Transmitted dataG H NCSignal level RS-232C Character length 8 bitsSync. method Asynchronous Stop bit 1 bitBaud rate 9 600 bps X parameter NoneParity None S parameter NoneThe data streaming from the computer willstart with STX, and proceed to Command,Parameter and end with ETX. You canadd the required parameter.DIN 8 pin (male)COMPUTER1Serial terminal (female)Serial adapter(ET-ADSER:sold separately)1 26 853STX Command : Parameter ETXStart byte(02h)1 byte End(03h)3 bytes 1 byte -4 bytes