Service manual

ViewSonic Corporation Confidential - Do Not Copy VA702-3_VA702b-3
10
3. ELECTRICAL SPECIFICATIONS
3.1 Standard conditions
Display Area
338 x 270 mm
Video Signal
0.7 Vpp
Contrast
70%
Brightness
Max.
Ambient
20 +/- 5 °C
Input
AC
Warming up
> 30 min
Display
1280 x 1024
3.2 POWER
3.2.1 Power supply
Input Voltage 90 -240 ~Volts
Power Frequency
Input current
50/ 60 Hz +/-3Hz
<1.5Arms @ 90Vac
<0.75Arms@240Vac
Inrush current 90A(max.) at 230Vac
Power consumption 50Watt
Output Voltage @0-3.0A load 12Vdc +/-5%
3.2.2 Power Management
State Power Indicator
On 36Watt Green
Standby <1Watt Amber
Off <1Watt
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 : 56~85Hz(1280x1024,75Hz)
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
4. SIGNAL CABLE : Signal cable with Mini D-Sub 15P connectors at both ends. Length : 1.8 meter.