Panasonic PT-L759U Service Manual page 13

3.8. External Interface (RS-232C)
3.8.1. Outlined Function
Through connection with external equipment (e.g. personal computer), it can control the
projector from outside or can inquire about status.
3.8.2. Requirements for Receiving
- Lamp control command or inquiry command can be received
ordinarily.
- Other commands can be received when lamp is set at ON only. /
(When lamp is set at OFF, it does communication response to
command only and does no actual work.)
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