Service manual

4-3. ELECTRICAL SPECIFICATIONS
3.1 Standard cond itions
3.2 POWER
3.2.1 Power supply
3.2.2 Power Management
3.3 Acceptable timing
If your timing is within following specification, this LCD display can automatically function with a certain
position.
Horizontal: Sync frequency: 30~81 kHz
Vertical: Sync frequency: 56~75Hz
Input voltage
90~240 Volts
Power frequency
50 / 60 Hz, +/-3 Hz
Input current
< 1.5 Arms @90Vac
< 0.75Arms @265Vac
Inrush current
90A(Max) at 230Vac
Power consumption
48W(Max)
Output Voltage
@0-4.8A Load 12Vdc+/- 5%
Display area 338 x 270
Video signal 0.7 Vpp
Contrast Max.
Brightness Max.
Ambient 20 +/- 5 C
Input AC
Warming up > 30
Display 1280 x1024
3.4 Signal level and input impedance
3.4.1 Video Signal level This LCD display is adjusted at the factory using 0, 7 Vp-p Video signal.
3.4.2 Sync Signal level
H/V Separate: TTL level
3.4.3 Input impedance
Video input: 75 ohms
Sync input: > 1 k ohms
ViewSonic Corporation
6
Confidential – Do Not Copy
VG700b-2
State Power Indicator
On 48Watts Green
Standby <3Watts Amber
Off <3Watts None