Emprex LCD Monitor LM-1702 - Manual (Page 15)

15
Advanced Power Saving M ode
1. Background
The traditional monitors have the function of electricity-saving dormancy. Bu t the interval of dormancy is difficult
to decide. If the interval is long, the purpose of saving electricity can not be achieved. While if the interval is
short, y our computer and LCD monitor will be dormant often. When the LC D monitor becomes dormant, the
back lights w ill be turned off immediately. The frequent turning-on and turning-off of lights will result in the
lightness being uneven and even, shortening the life of the lights.
2. Our solution to the dilemma – Monitor the Life-Extension function
In view of that, we have designed the function of Monitor Life-Extension. Once you s elect the option of
“Advanced
Power Saving Mode” in the OSD menu, and then you ca n not only save electricity, but extend the life of the
lights.
3.Working principle of the Monitor Life-Extension function
To minimize the impact of frequent turn-on and turn-off of L CD monitor,
the Life-Extension function decreases the electricity supplied to the
back-light of LCD monitor gradually , instead of cutting it off right away
when the P C enters sleeping or off mode. Please see the following
comparison graphics for details.
* Standard Power Saving Mode (without Monitor Life-Extension function)
Power
* Advanced Power Saving Mode (with Monitor Life-Extension function)
Power
ON Sleep Start Power Saving Start
This “Slow-Start-n-Delay-Off” approach minimizes the transit of electricity and temperature caused by the
turning-on and turning-off of the LCD monitor. Therefore, the decay of backlight s o f T FT -LCD ca n be
controlled at the certain level which is much less than it was.
4. The side effect of the Monitor Life-Extension function (why not preset Advanced Power
Saving Mode as default?)
According to the request of EP A (US Environmental Protection Agency) to power management of monitors, the power consumption of the
monitor must go down to below 3 watts within 3 seconds after the monitor s goes into power s aving mode. Bu t the Life-Extension
function decreases the electricity supplied to the backlights of LCD monitor gradually. Therefore, the Monitor L ife-Extension function has a
conflict with the requirement of E PA in the first 7 minutes after entering sleeping mode. Even though,comparing the advantage s o f both
conditions, we still recommend you strongly set your monitor to Advance d Power Saving mode.
Addendum