Acer HS244HQ, Lifecycle Extension Manual

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ACER S190HQL
9
1.3.6 Power Adaptor Requirements:
The AC to DC power adaptor for this monitor shall be a DC power supply. This power adaptor shall have an
IEC receptacle for mains power input and provide sufficient power for backlight assembly, interface board and
panel. And it should meet all requirements specified in following Table.
AC TO DC Converter
Requirement
Input Voltage Range The opera ting range shall be from 90 to 264 VAC sinusoidal for all models specified.
Input Frequency
Range Input power frequency range shall be from 47 to 63Hz.
Power
Consumption
Power consumption for the monitor shall be less than 32 W over the specified voltage and frequency
ranges. In Power off mode the power consumption will be less than 0.6W (at 110VAC).
Lin e Fuse
The AC input shall be fused and become electrically open as a result on an unsafe current level. The
fuse may not user replaceable.
Initial Cold Start
The power adaptor shall start and function properly when under full load, with worst case conditions
of input voltage, input frequency, operating temperature, and cold backlight LED.
Inrush Current
The inrush current must be limited to when operated at 120VAC, and when operated at . Inrush
current is measured at an ambient temperature of 25
°
C, with the unit temperature stabilized in the
power off.
Hot Start Cycle
The power adaptor shall not be damaged when power ON for one second and OFF for one second
for seven
consecutive times after opera ting for one hour at full load, 25
°
C, and nominal input line
voltage.
Under Voltage
The power adaptor shall contain protection circuitry such that the application of an input voltage
below the
minimum specified in this table shall no t cause damage to the power adaptor unit nor
cause failure of the input.
Line Transient
The power adaptor shall operate within EN 61000-4-4 (+/-1KV) and EN 61000-4-5(+/-2KV).
The power adaptor shall operate and comply with CE mark.
1.3.7 Display Communications Channel:
The monitor shall provide a display communications channel that conforms to VESA DDC2B hardware
requirements. This configuration shall contain the 128-byte(or 256-byte) EDID file as specified by VESA
E-EDID Standard. Once the EDID is programmed the write protection function will enabled. So the
EEPROM data cannot be overwritten
1.4 Flat Panel:
1.4.1 General Requirements:
The panel shall be an WQHD resolution 34
” diagonal TFT-LCD
1.4.2 Panel Timings:
The controller in the monitor shall translate video timings from the PC to meet the timing requirements listed in
Panel specification. Under no circumstances may the controller supply the panel with timings that may result
in damage. The controller shall insulate the panel from the PC, so th at the panel shall always be driven
according to its specification regardless of the timings being sent from the PC.
1.4.3 Polarizer Hardness:
The outer face of the front polarizer panel shall be covered with a coating with a 3H hardness value.
1.4.4 Backlight Requirements:
1.4.4.1 General Requirements:
The LED shall have a continuous operating life of at least 30000 hours at 25°C. The operating life is
defined as having ended when the illumination of light has reached 50% of the initial value. The LED
shall extend a sufficient amount from the edge of the light guide that sputtering over the life of the
lamps shall not cause degradation of the luminance uniformity (such as non-illuminated bands along
the edges of the display).