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28 Chapter 1
the system is on.
LCD
Item Specification
Vendor & model name QDI QD141X1LH12 LG LP150E02-A2P1
Hitachi TX38D81VC1CAB
AU B150XG01
Mechanical Specifications
LCD display area (diagonal, inch) 14.1 15.0
Display technology TFT TFT
Resolution XGA (1024x768) SXGA (1400X1050)
Supports color 16.7 million 16.7 million
Optical Specifications
Brightness control Keyboard hotkey Keyboard hotkey
Contrast control No No
Suspend/Standby control Yes Yes
Electrical Specifications
Supply voltage for LCD display (V) 3.3 3.3
Supply voltage for LCD backlight
(Vrms)
660 (typ.) 690 (typ.)
AC Adapter
Item Specification
Vendor & model name Delta 75W ADP-75FB A(WPFC) 3P
Lite-on 75W PA 1750-02CA(WPFC) 3P
Input Requirements
Maximum input current (A,
@90Vac, full load)
<1.5A @ 90Vac
<1.125A @ 180Vac
Nominal frequency (Hz) 47 - 63
Frequency variation range (Hz) 47 - 63
Nominal voltages (Vrms) 100 - 240
Inrush current The maximum inrush current will be less than 75A and 188A when the adapter is
connected to 100Vac(60Hz) and 240Vac(50Hz) respectively.
Efficiency It should provide an efficiency of 83% minimum, when measured at maximum
load under 115V(60Hz)
Output Ratings
DC output voltage +18.8V~20.0V including the effects of line voltage variation, load current, ripple
and noise
Noise + Ripple 400mvp-p(20MHz bandwidth) for resistor load
Output current 0~3.95A
Input rated voltage 100/240V
Input currentt 1.5A @90Vac for Delta / 1.125A @90Vac for Lite-on
Dynamic Output Characteristics
Turn-on delay time 3 sec.
Hold up time 5 ms min. (115Vac, input full load)
Over Voltage Protection (OVP) 29 V
Short circuit protection Output can be shorted without damage
Electrostatic discharge (ESD) +/- 15kV (at air discharge)
+/- 8kV (at contact discharge)
Dielectric Withstand Voltage