Controller Requirements; General Requirements; Video Stretching; Panel Timing And Interface - Acer S230HL Service Manual

10 ACER S230HL
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1.3.5 Controller Requirements:

1.3.5.1 General Requirements:

The monitor shall include a controller which is capable of converting the analog RGB signal
digital signal to the panel. The controller will include a PLL, A/D converters, TMDS receiver and other
circuitry necessary to perform its function. The PLL shall be stable enough to ensure a stable image.

1.3.5.2 Video Stretching:

The monitor shall have the function to "stretch" the video signal, so that an input signal from the
computer in any resolution smaller than 1920x1080 is automatically expanded to fill the entire
screen.

1.3.5.3 Panel Timing and Interface:

The controller supplied with the monitor shall control all panel timing. This controller shall adequately
insulate the monitor from the computer, so that no possible combination of input signals from the
computer shall cause damage to the flat panel or any other component of the monitor.
1.3.6 Power Adaptor Requirements:
The AC to DC power
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.
Input Voltage Range
Input Frequency Range Input power frequency range shall be from 47 to 63Hz.
Power Consumption
Lin e Fuse
Initial Cold Start
Inrush Current
Hot Start Cycle
Under Voltage
Line Transient
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 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. Product Specification
adaptor for this monitor shall be a DC power supply. This power adaptor shall have an IEC
AC TO DC Converter Requirement
The opera ting range shall be from 90 to 264 VAC sinusoidal for all models specified.
Power consumption for the monitor shall be less than 30 W over the specified voltage and frequency ranges. In
power off mode the power consumption will be less than 0.6W (at 110VAC).
The AC input shall be fused and become electrically open as a result on an unsafe current level. The fuse may
not user replaceable.
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.
The inrush current must be limited to when operated at 120VAC, and when operated at . In rush current is
measured at an ambient temperature of 25 ° C, with the unit temperature stabilized in the power off.
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.
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.
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.
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