D99-6F5E2P1B3M0 WEDC [White Electronic Designs Corporation], D99-6F5E2P1B3M0 Datasheet - Page 4

• Manufacturer Part Number: D99-6F5E2P1B3M0
• Description: RUGGEDIZED 5.6 DISPLAY HEAD ASSEMBLY w/ BACKLIGHT (320 x 234)
• Manufacturer: WEDC [White Electronic Designs Corporation]

White Electronic Designs Corp. reserves the right to change products or specifi cations without notice.
August 2003
Rev. 0
SPECIFICATION
This is the specifi cation for the high performance Backlight
System that is used to illuminate a 5.6-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. For
low-temperature operation, 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.
Pin
1
2
3
4
5
6
7
8
9
10
Signal Acronym
+28V_RTN
EXTSHDW
+CONTROL
+CONTROL_RTN
+28V
Not Used
LAMPMNT
Not Used
+12V
+12V_RTN
White Electronic Designs
Display Systems Division
SIGNAL DEFINITION
Input/
Output
Input
Input
Input
Input
Input
Output
Input
Input
Input
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 volt-
age 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 back-
light circuitry.
+12 volt return
4
INPUT SIGNALS
+12V, +12V_RTN : Power and Return for lamp and
control circuitry
+28V, +28V_RTN : Power and Return for heater
+CONTROL, +CONTROL_RTN : 0 to 5V Input for
luminance control voltage
LUMINANCE
Luminance Range:
Note: All measurements @ 25°C.
Tolerance:
Noise & Ripple:
Current Cap:
Recommended Cabling:
Tolerance:
Noise & Ripple:
Current Cap:
Recommended Cabling:
Control Voltage:
Noise & Ripple:
Current Cap:
Recommended Cabling:
Low: 0.1fl max
High: 100fl min
Control Voltage: 0.000 to 5.000 Volts (The
adjustment range is monotonic with 8 BIT
resolution.)
Uniformity:
Display Systems Division • Hillsboro, OR • [phone] • www.wedc.com
Pin 1
Pin 2
*Looking at component side of PCB.
Part Number 69168-110
D99-6F5E2P1B3M0
30% measured at 5 spots
Dupont/Berg
Original specifi cations created by Sharp.
± 5.0%
1.4 Amps max
1.0 Amp max
0 to +5 V
< 10mVp-p
1mA
150mv
#24 AWG Twisted
+/-5%
150mv
#24 AWG Twisted
#24 AWG Twisted
r-p
r-p
Pin 10
Pin 9