you connected a computer to the projector's Computer
port, you can also connect an external
monitor to the projector. This lets you see your presentation on
the external monitor even when the projected image is not visible.
If you want to output images to an external monitor when the
projector is turned off, you need to select Communication On as the Standby Mode setting and Always On as the A/V
Output setting in the projector's menu system.
that use a refresh rate less than 60 Hz may not be able to display