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Appendix
Technical Information
46 - ENGLISH
The serial connector which is on the connector panel of the projector conforms to the RS-232C interface
specification, so that the projector can be controlled by a personal computer which is connected to this connecter.
J Connection
J Pin assignments and signal names
J Cable specifications
(When connected to a personal computer)
J Basic format
The projector can not receive any command for 10 seconds after the lamp is switched on. Wait 10 seconds
before sending the command.
If sending multiple commands, check that a response has been received from the projector for one
command 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 the
projector to the personal computer.
Serial terminal
NOTE:
• You must use only an RS-232C Serial Interface Cable with a ferrite core, type ET-ADSER.
Pin No. Signal name Contents
A Connected internally
B Connected internally
C RXD Received data
D GND Earth
E TXD Transmitted data
F Connected internally
G NC
H NC
The data streaming from the computer will
start with STX, and proceed to Command,
Parameter and end with ETX. You can
add the required parameter.
D-sub 8 pin (male)
Computer
Serial terminal (female)
Serial terminal adapter
(ET-ADSER: Optional)
NC
NC
NC
NC
NC
NC
NC
NC
Projector
PC (DTE)
STX Command : Parameter ETX
Start byte
(02h)
1 byte End
(03h)
3 bytes
1 byte -
4 bytes