Epson ELPLP29 - Supported Display Resolutions; Display Resolution Tables

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Cable Format
f Serial connection
• Connector type: D-Sub 9 pin(male)
• Projector input port type : RS-232C
<Projector> <Computer>
<Projector> (PC serial cable) <Computer>
Signal name Function
GND Signal line grounding
TD Transmitting data
RD Receiving data
DSR Data set ready
DTR Data terminal ready