D99-516E2P2B2M1 WEDC [White Electronic Designs Corporation], D99-516E2P2B2M1 Datasheet - Page 5

• Manufacturer Part Number: D99-516E2P2B2M1
• Description: Ruggedized 5.0 Display Head Assembly with Backlight
• Manufacturer: WEDC [White Electronic Designs Corporation]

SPECIFICATION
This is the specification for the high performance
Backlight System that is used to illuminate a 5.0-inch
AMLCD display head.
The backlight is a closed loop luminance sensed system.
A sensor monitors the bulb's luminance output and
compares it with the control voltage to regulate output.
The luminance is maintained over time and temperature
variations.
Our multi-bulb system offers built-in redundancy for
continued lighting in the event of single bulb failure. A
built-in lamp heater assembly maintains bulb temperature
at its optimum level. External shutdown of the heater and
lamp power are controlled via an external input. When
lamp replacement is required, an output pin signals
low.
External voltage input is a differential input that provides
common mode rejection of common mode noise. The
luminance output versus input voltage response is non-
linear to provide easy adjustments at low luminance.
White Electronic Designs Corp. reserves the right to change products or specifi cations without notice.
June, 2004
Rev. 3
Pin
1
2
3
4
5
6
7
8
9
10
* Looking at component side of PCB.
Part Number 69168-110
Signal
Acronym
+12V(2)_RTN
EXTSHDW
+CONTROL
+CONTROL_RTN
+12V(2)
Not Used
LAMPMNT
Not Used
+12V(1)
+12V(1)_RTN
Dupont/Berg
White Electronic Designs
Display Systems Division
SIGNAL DEFINITION
Input/
Output
Input
Input
Input
Input
Input
Output
Input
Input
Input
Pin 1
Pin 2
Description
Backlight heater return
Input signal used to shutdown the lamp
and heater power, the control circuitry will
still be powered.
Positive side of the differential voltage
control for the backlight.
Negative side of the differential voltage
control for the backlight. (Normally
Grounded)
This is the power for the internal backlight
heater.
Output signal to indicate the lamps need
replacement.
Shield of the control voltage cable.
+12 volt power used for the backlight
circuitry.
+12 volt return
Pin 10
Pin 9
5
INPUT SIGNALS
+12V(1), +12V(1)_RTN : Power and Return for lamp
and control circuitry
+12V(2), +12V(2)_RTN : Power and Return for heater
+CONTROL, -CONTROL_RTN : 0 to 5V Input for
luminance control voltage
LUMINANCE
Luminance Range: Low: 0.1 fl max.
Control Voltage:
(The adjustment range is monotonic with 8 BIT
resolution.)
Uniformity:
Note: All measurements at 25
VIDEO INTERFACE SPECIFICATIONS
FEATURES
Tolerance:
Noise & Ripple:
Current Cap:
Recommended Cabling:
Tolerance:
Noise & Ripple:
Current Cap:
Recommended Cabling:
Control Voltage:
Noise & Ripple:
Current Cap:
Recommended Cabling:
Dual Mode NTSC (M) and PAL F Timing for RGB
Video and NTSC Timing for Composite Video
Supports Two Sets of Analog RGB Video Signals
NTSC Composite or S-Video Signals
Display Resolution 320 x 234 (NTSC) and 320 x 273
(PAL)
External Clock Mode
Display Systems Division • Hillsboro, OR • [phone] • www.wedc.com
D99-516E2P2B2M1
High: 100fl min.
0.000 to 5.000 Volts
30% measured at 5 spots
0
C
± 5%
150mVp-p
1.4 Amps max
#24 AWG Twisted
±5%
150 mVp-p
1.0 Amp max
#24 AWG Twisted
0 to +5 V
< 10mVp-p
1mA
#24 AWG Twisted