JVC DLA-X30B Instructions - Page 87
RS-232C Interface
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ENGLISH RS-232C Interface It is possible to control this machine, if it is connected by an RS-232C cross cable (D-Sub9 pin) to a PC. Otherwise, this machine can be controlled via a computer network by connecting it with a LAN cable and sending of control commands. Please use it after you have understood this by reading professional books, or by discussing it with a system administrator. RS-232C Specifications This unit Pin No. 2 3 5 1,4,6 - 9 Signal RxD TxD GND N/C Function Receive data Transmit data Signal ground - Signal Direction PC→This unit This unit→PC - ● PC refers to the controller such as a personal computer. Mode Non-synchronous Character Length Parity 8 bit None D0 D1 D2 D3 D4 D5 D6 D7 Start Bit 1 Stop Bit 1 Start Bit Stop Bit Data rate 19200 bps Data format Binary TCP/IP-connection Before you can control it via LAN, you have to establish a TCP-connection via a "3-way-handshake". It is necessary for a connection authentication to send from the projector "PJ_OK" and - within 5 seconds after sending a "PJREQ" - to receive "PJACK". Please perform this operation - after confirming the operating status of the projector - again after establishment of a TCP connection, if you cannot send within 5 seconds "PJ_NG" or could not receive "PJNAK". Within 5 seconds Projector ̥̟_̤̠ ̥̟̖̘̠ TCP-layer connection establishment TCP port number 20554 Three-way handshake Projector Control Control PC ̧̥̟̦̚ Connection authentication procedure Others 87