System Introduction 1-15

Table 1-27 LCD Specifications

Item Specification
Supported colors -- -- 262,144 colors
Optical Specification
Contrast ratio 40 (typ.) 40 (typ.) 80 (typ.)
Brightness (cd/m2)70 (typ.) 70 (typ.) 70 (typ.)
Brightness control keyboard hotkey keyboard hotkey keyboard hotkey
Contrast control using keyboard
hotkey using keyboard
hotkey none
Electrical Specification
Supply voltage for LCD
display (V) 3.3 or 5 (typ.) 3.3 or 5 (typ.) 3.0 ~ 3.6 (typ.)
Supply voltage for LCD
backlight (Vrms) 630 (typ.) 630 (typ.) 595(typ.), 660(max)
1.3.25 AC Adapter

Table 1-28 AC Adapter Specifications

Item Specification
Vendor & model name Delta ADP-45GB Rev. E3, E5
Input Requirements
Nominal voltages (Vrms) 90 - 270
Nominal frequency (Hz) 47 - 63
Frequency variation range (Hz) 47 - 63
Maximum input current (A, @90Vac, full load) 1.5 A
Inrush current The maximum inrush current will be less than 50A and
100A when the adapter is connected to 115Vac(60Hz)
and 230Vac(50Hz) respectively.
Efficiency It should provide an efficiency of 83% minimum, when
measured at maximum load under 115V(60Hz).
Output Ratings (CV mode)
DC output voltage (V) +19.0V~20.5V
Noise + Ripple (mV) 300mvp-pmax (20Mhz bandwidth)
Output Ratings (CV mode)
Load (A) 0 (min.) 2.4 (max.)
DC output voltage (V) +12 ~+19
Constant output (A) 2.75 ± 0.2
Dynamic Output Characteristics
Turn-on delay time (s, @115Vac) 2
Hold up time (ms; @115 Vac input, full load) 5 (min.)
Over Voltage Protection (OVP, V) 26