Test Pattern - BenQ TH671ST User Manual

HDMI • HDMI Range: Sets the HDMI Range to Auto, Full, or Limited.
Settings
Selects a baud rate that is identical with your computer's so that you can connect
Baud Rate the projector using a suitable RS-232 cable and update or download the projector's
firmware. This function is intended for qualified service personnel.
Adjusts the image size and focus and check that the
projected image is free from distortion.

Test Pattern

Select On enables the function and projector cooling time will be shortened from a
Quick Cooling
normal 90-second duration to approximately 15 seconds.
We recommend you use the High Altitude Mode when your environment is
between 1500 m –3000 m above sea level, and ambient temperature is between
0°C–30°C.
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
High Altitude
may display auto shut-down symptoms, which is designed to protect your projector
Mode
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.
Do not use the High Altitude Mode if your altitude is between 0 m and 1500 m and ambient
temperature is between 0°C and 35°C. The projector will be over cooled, if you turn the mode on
under such a condition.
For security purposes and to prevent unauthorized use, you may set up password
security for the projector. See
• Change Password
Password
You will be asked to enter the current password before changing to a new one.
• Power On Lock
Limits use of the projector to only those who know the correct password.
With the control keys on the projector locked, you can prevent your projector
settings from being changed accidentally (by children, for example).
When you select On to enable this function, no control keys on the projector will
Key Lock
function, except
To unlock the keys, press and hold
36 Menu operation
Utilizing the password function
POWER.
on the projector for 3 seconds.
for details.