Projector input port name: RS-232C
<At the projector> <At the computer>
<At the projector> (PC serial cable) <At the computer>
Signal Name Function
GND Signal wire ground
TD Transmit data
RD Receive data
DSR Data set ready
DTR Data terminal ready

Communications protocol

Default baud rate setting: 9600 bps
Data length: 8 bit
Parity: None
Stop-bit: 1 bit
Flow control: None
ESC/VP21 Commands
91