Chapter 1 27
Contrast control No No
Electrical Specificat ion
Supply voltage for LCD disp lay (V) 3.3 3.3
Supply voltage for LCD back light (Vrms) 700 660
AC Adapter
Item Specification
Vendor & model name Delta ADP-65DB B E
Input Requirements
Maximum input current (A,
@90Vac, full load)
1.5 A @ 90Vac
0.9 A @ 180Vac
Nominal frequency (Hz ) 47 - 63
Frequency variation range (Hz) 47 - 63
Nominal voltages (Vrms) 90 - 270
Inrush current The maximum inrush current will be less than 50A and 100A when the adapter
is connected to 100Vac(50Hz ) and 240Vac(60Hz) respective ly.
Efficiency It should provide an efficienc y of 85% minimum, wh en measured at maxim um
load under 240V(60Hz).
Output Ratings (CV mode)
DC output voltage +19.0V ~21.5V
Noise + Ripple 300mvp-pmax (20MHz bandwidth)
Load 0 A (min.) 3.5 A (max.)
Output Ratings (CC mode)
DC output voltage +12V ~ +19V
Constant output 4.5 ± 0.3 A
Dynamic Output Characteristics
Turn-on delay time 3 sec. (@100Vac)
Hold up time 6 ms min. (@ 100 Vac input, full load)
Over Voltage Protecti on (OVP) 25 V
Short circuit protection Output can be shorted without damage (no broken, no smoke)
Electrostatic dis charge (ESD) 15kV (at air discha rge)
8kV (at contact discharge)
Dielectric Withst and Voltage
Primary to secon dary 1500 Vac (or 2121 Vdc ), 10 mA for 1 sec ond
Leakage current 0.25 mA max. (@ 254 Vac, 60Hz)
Regulatory Requirements Internal filter meets:
1. FCC class B requirements. (USA)
2. VDE 243/1991 class B requirements. (German)
3. CISPR 22 Class B requirements. (Scandinavia)
4. VCCI class II re quirements. (Japan )
LCD
Item Specification