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Theory of Operation
1. AC/DC Adapter
Input voltage :
Input current :
Inrush current :
Output voltage :
Output current :
Over Current Protection : 3.0 ~5.0Adc (At 115Vac / 230Vac)
2. DC/AC INVERTER
Input voltage :
Input current :
Output current :
Frequency(switching) :
Output power :
On/off control voltage :
3 . Video circuit
Input signals are amplified by a preamp TDA9206, then a gain of R.G.B Signal are changed by
controlling Color Temperature(OSD Adjust). Amplified video signals are input to the
ADC(Analog to Digital Converter) and converted to digital signals.
Again,digitized video signals are input to the MX88271(or MX88281:Video Processor), and
output to the LCD module as synchronized timing after it execute the function of Zooming,
Scaling, Frame Rate Conversion, Brightness, Contrast, Dithering, Gamma compensation etc...
4. Clock(H-size)
Clock generator, CXA3106A(PLL Chip), is controlled by MCU.
Pixel clock is changed according to each video mode.
5. DPMS MODE
Reference to DPMS files
Signal
Status
H-Sync V-Sync Video
on
Pulse
Pulse Active
No
Suspend
Pulse
Pulse
No
No
off
Pulse
Pulse
90 ~ 264 Vac, 50/60 Hz
Max 1.5A (Vin : 90Vac , 50Hz)
15A peak (At 115Vac Max . Load)
30A peak (At 230Vac Max. Load)
18Vdc (At 115Vac / 230Vac Max , Load)
2.5Adc (Max. Load)
DC 12V
2.0A(Max)
15.0mA(Max) , 3.0mA(Min)
40KHz
4.5W(Max)
5.0V
Power
Consumption
40W
Blank
Less Than 10W
Blank
Less Than 5W
Recovery
Time
-
Within3
Sec
Within 3
Sec
--7--
LED
Indicator
Green
Green/Orange(about 0.5 sec)
Orange
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