ESD Susceptibility
Contrast Enhancement
Controller Circuits, Power
Calculations, and Display Dimming
The display has an ESD
When used with the proper
contrast enhancement filters,
the display is readable in
sunlight.
susceptibility ratings of CLASS
3 of MIL-STD-883E, HBM. It is
recommended that normal
CMOS handling precautions be
observed with these devices.
Refer to Application Note 1016,
Using the HDSP-2000
Alphanumeric Display Family,
for information on controller
circuits to drive these displays,
how to do power calculations,
and a technique for display
dimming.
Refer to Application Note 1029,
Luminous Contrast and
Sunlight Readability of the
HDSP-235X Series Alpha-
numeric Displays for Sunlight
Viewable Applications, for
information on contrast
enhancement for sun-light and
daylight ambient. Refer to
Application Note 1015, Contrast
Enhancement Techniques for
LED Displays, for information
on contrast enhancement in
moderate ambients.
Soldering and Post Solder Cleaning
These displays may be soldered
with a standard wave solder
process using either an RMA
flux and solvent cleaning or an
OA flux and aqueous cleaning.
For optimum soldering, the
600
500
400
300
solder wave temperature should
°
be 245 C and the dwell time
200
100
0
for any display lead passing
through the wave should be 1.5
to 2 seconds. For more detailed
information, refer to Application
Note 1027, Soldering LED
Components.
2.0
2.5
V
3.0
3.5
4.0
4.5
5.0
Night Vision Lighting
– COLUMN VOLTAGE – V
COL
When used with the proper
NVG/DV filters, HCMS-235x
display may be used in night
vision lighting applications. For
a list of NVG/DV filters and a
discussion on night vision
lighting technology, refer to
Application Note 1030, LED
Displays and Indicators and
Night Vision Imaging System
Lighting.
Figure 2. Peak column current vs. column
voltage at T = 25°C.
A
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Data subject to change.
Copyright © 2004 Agilent Technologies, Inc.
August 13, 2004
5989-1320EN
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
