BenQ SP831 - Manual (Page 50)

50 Operation
Operating in a high altitude environment
We recommend you activate High Altitude Mode when your environment is higher than
1500 meters (around 4920 feet) above sea level, or whenever the projector will be used for
extended periods of time (>10 hours) without shutdown.
To activate High Altitude Mode:
1.
Press MENU and then press / until the
Advanced Setup menu is highlighted.
2. Press to highlight High Altitude Mode.
3. Press / to select On. A confirmation
message displays.
4. Highlight Yes and press ENTER.
Operation under High Altitude Mode may cause a
higher decibel operating noise level because of
increased fan speed necessary to improve overall
system cooling and performance.
If you use this projector under other extreme
conditions excluding the above, it may display
auto shut-down symptoms, which is designed to
protect your projector from over-heating. In cases
like this, you should switch to High Altitude
Mode to solve these symptoms. However, this is
not to state that this projector can operate under
any and all harsh or extreme conditions.
Hiding the picture
In order to draw the audience's full attention to
the presenter, you can use BLANK to hide the
screen picture. The word 'BLANK' appears in the
lower right corner of the screen while the picture
is hidden. When this function is activated with an
audio input connected, the audio can still be
heard.
You can set a time length in the System Setup >
Blank Timer menu to restore the picture after a
period of time when there is no action taken on
the projector or remote control. The length of
time can be set from 5 to 30 minutes in 5-minute
increments.
If the preset time spans are not suitable for your
personation, select Disable.
No matter Blank Timer is activated or disabled,
you can press any key (except LASER) anytime
you want to restore the picture.
High Altitude Mode is used when the
environment is higher than 1500m.
Do you want to turn the High Altitude
Mode on?
Yes No
WARNING
Lamp
Audio
Pattern
High Altitude Mode
Password
Key Lock
Reset All Settings
Advanced Setup
EXIT Back Analog RGB
On
Language
Splash Screen
My Screen
Projector Position
Blank Timer
Auto Off
Sleep Timer
Background Color
Menu Settings
Input Source
System Setup
Analog RGB
English
BenQ
Disable
Auto Source Search
EXIT Back
Disable
Disable
Blue
On
Floor Front
Do not block the projection lens
from projecting as this could cause
the blocking object to become
heated and deformed or even cause
a fire.