NEC Display Solutions of America, Inc.PA521U/PA571W/PA621X Installation GuideDesktop and Ceiling Mount Rev 1.0www.necdisplay.com PA521U/ PA571W/PA621X Page 14 of 14PC Control CodesFunction Code DataPOWER ON 02H 00H 00H 00H 00H 02HPOWER OFF 02H 01H 00H 00H 00H 03HINPUT SELECT VGA 02H 03H 00H 00H 02H 01H 01H 09HINPUT SELECT BNC 02H 03H 00H 00H 02H 01H 02H 0AHINPUT SELECT HDMI 02H 03H 00H 00H 02H 01H 1AH 22HINPUT SELECT DisplayPort 02H 03H 00H 00H 02H 01H 1BH 23HINPUT SELECT BNC (CV) 02H 03H 00H 00H 02H 01H 06H 0EHINPUT SELECT BNC (Y/C) 02H 03H 00H 00H 02H 01H 0BH 13HINPUT SELECT NETWORK 02H 03H 00H 00H 02H 01H 1FH 27HINPUT SELECT HDBaseT 02H 03H 00H 00H 02H 01H 20H 28HPICTURE MUTE ON 02H 10H 00H 00H 00H 12HPICTURE MUTE OFF 02H 11H 00H 00H 00H 13HSOUND MUTE ON 02H 12H 00H 00H 00H 14HSOUND MUTE OFF 02H 13H 00H 00H 00H 15HON SCREEN MUTE ON 02H 14H 00H 00H 00H 16HON SCREEN MUTE OFF 02H 15H 00H 00H 00H 17HASPECT RATIO (4:3 Screen)4:3 03H 10H 00H 00H 05H 18H 00H 00H 00H 00H 30HLETTERBOX 03H 10H 00H 00H 05H 18H 00H 00H 01H 00H 31HWIDESCREEN 03H 10H 00H 00H 05H 18H 00H 00H 02H 00H 32HZOOM 03H 10H 00H 00H 05H 18H 00H 00H 03H 00H 33HASPECT RATIO (RGB)4:3 WINDOW 03H 10H 00H 00H 05H 18H 00H 00H 00H 00H 30H16:9 03H 10H 00H 00H 05H 18H 00H 00H 02H 00H 32H5:4 03H 10H 00H 00H 05H 18H 00H 00H 0BH 00H 3BH16:10 03H 10H 00H 00H 05H 18H 00H 00H 0CH 00H 3CH15:9 03H 10H 00H 00H 05H 18H 00H 00H 0DH 00H 3DHAUTO ADJUST 02H 0FH 00H 00H 02H 05H 00H 18HCable ConnectionCommunication Protocol:Baud Rate: 38400 bps (for cable lengths longer than 20’, it is recommended changing to 9600 bps in setup menu)Data Length: 8 bitsParity: No ParityStop Bit: One bitX on/off: NoneCommunications: Full duplexPC Control Connector (D-Sub 9P)NOTE 1 : Pins 1, 4, 6, and 9 are used inside the projector.NOTE 2: For long cable runs it is recommended to set communication speed within the projector to 9600 bps.NOTE 3: Jumper “Request to Send” and “Clear to Send” together on both ends of the cable to simplify cable connection.1 2 3 4 56 7 8 9To GND of PCTo RxD of PCTo TxD of PCTo CTS of PCTo RTS of PC