BenQ MH750 User Manual page 55

FUNCTION
Baud Rate
Test Pattern
Closed
Caption
12V Trigger
55 Operation
DESCRIPTION
Selects a baud rate that is identical with your computer's so that you
can connect the projector using a suitable RS-232 cable and update
or download the projector's firmware. This function is intended for
qualified service personnel.
Selecting On enables the function and the projector displays the grid
test pattern. It helps you adjust the image size and focus and check
that the projected image is free from distortion.
Closed Caption Enable
Activates the function by selecting On when the selected input signal
carries closed captions.
• Captions: An on-screen display of the dialogue, narration, and
sound effects of TV programs and videos that are closed
captioned (usually marked as "CC" in TV listings).
Caption Version
Selects a preferred closed captioning mode. To view captions, select
CC1, CC2, CC3, or CC4 (CC1 displays captions in the primary
language in your area).
Enable or disable 12V trigger output. Used to trigger external device
such as an electric screen or light control, etc. Consult your dealer
for how to connect these devices.