User manual HITACHI PJ-TX300 TECHNICAL SPECIFICATIONS

[. . . ] RS-232C communication 9 5 4 8 3 7 2 6 1 1 6 2 7 3 8 4 9 5 CONTROL port of the projector RS-232C cable(Cross) - (1) RD (2) TD (3) - (4) GND (5) - (6) RTS (7) CTS (8) - (9) (1) CD (2) RD (3) TD (4) DTR (5) GND (6) DSR (7) RTS (8) DTS (9) RI RS-232C port of a computer Connecting the cable (1) Turn off the projector and the computer power supplies. (2) Connect the CONTROL port of the projector with a RS-232C port of the computer by a RS-232C cable(Cross). [. . . ] Changing the projector settings (Set command) (1) Send the setting code Header + Command data (`01H'+`00H'+ type (2 bytes) + setting code (2 bytes)) from the computer to the projector. (2) The projector changes the setting based on the above setting code. (3) The projector returns the response code `06H' to the computer. Using the projector default settings (Reset Command) (1) The computer sends the default setting code Header + Command data (`06H'+ `00H'+ type (2 bytes) + `00H'+`00H') to the projector. (3) The projector returns the response code `06H' to the computer. Increasing the projector setting value (Increment command) (1) The computer sends the increment code Header + Command data (`04H'+ `00H'+ type (2 bytes) +`00H'+ `00H') to the projector. (2) The projector in creases the setting value on the above setting code. (3) The projector returns the response code `06H' to the computer. Decreasing the projector setting value (Decrement command) (1) The computer sends the decrement code Header + Command data (`05H'+ `00H'+ type (2 bytes) +`00H' + `00H') to the projector. (2) The projector decreases the setting value on the above setting code. (3) The projector returns the response code `06H' to the computer. When the projector cannot understand the received command When the projector cannot understand the received command, the error code `15H' is sent back to the computer. [. . . ] · Provide an interval of at least 40ms between the response code and any other code. · The projector outputs test data when the power supply is switched ON, and when the lamp is lit. [. . . ]