Planar LC640.480.33-AC manual Cable Length, Cleaning, Avoiding Image Retention

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Vent Clearance

The LC640.480.33-AC display is a wide temperature display utilizing convection cooling. It is imperative to allow ambient air unrestricted access to the cooling vents in order to reliably operate the display at high temperatures

The vents for the lamp cavity are along the top and bottom edges of the display with the openings facing the rear. The vents for the inverter cavity are along the top and bottom faces of the display: four along the top surface and four along the bottom surface. Refer to the mechanical outline drawing in Figure 15 for vent locations.

Isolation/Air Gap

The display generates high voltage AC to drive the CCFL tubes. High voltage is present at numerous points on the backlight/inverter ECA which forms the rear surface of the display, so your application should not place metal too near the ECA. In the interests of both high voltage isolation and airflow for cooling, it is recommended that an air gap of

.197" (5 mm) or greater be maintained behind the display.

Ambient Light Sensor Clearance

Two backlight dimming modes utilize automatic brightness control (ABC). If the display is to be operated in either of these modes, the ambient light sensor located on the front bezel must be unobstructed. If the sensor is placed behind the same protective window as the display active (viewing) area, the sensor operation may be affected due to light scattering and reflections from display-generated light coupling to the sensor via the window.

Cable Length

Due to the high frequencies present on the video interface, unterminated video cable lengths of more than two feet (600 mm) are discouraged.

Cleaning

Care should be taken to minimize scratching. Clean the display front with a dry, soft cloth such as a professional photographic lens cleaner. Disposable cleaning cloths are recommended to minimize the risk of inadvertently scratching the display with particles embedded in a re-used cloth. Particular care should be taken when cleaning displays with polarizers or anti-glare and anti-reflective films. These films may delaminate if exposed to certain chemicals.

Avoiding Image Retention

Image retention may occur when a fixed pattern is displayed for a long time. Use a screen saver or image inversion to avoid image retention on the display.

LC640.480.33-AC Operations Manual (OM600-01)

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Contents LC640.480.33-AC Date Description Contents Figures LC640.480.33-AC Display Features and BenefitsMounting ECA Face Down Installation and HandlingMounting the Display Mounting Display Face DownCable Length CleaningAvoiding Image Retention Environmental Characteristics SpecificationsEnvironmental Characteristics Mechanical CharacteristicsReliability and Backlight Life Optical CharacteristicsSafety and EMI Optical CharacteristicsControl Basics Power RequirementsPower Sequencing LCD only Interfacing and OperationBacklight Signal DC Characteristics Backlight SignalsVideo Modes Video SignalsVideo Signal Characteristics Video Signal DC CharacteristicsVideo signal timing Signal TimingVertical mode video signal timing Timing Diagram, 480-line mode Timing Diagram, 400-line mode Timing Diagram, 350-line mode Video Data Color/Grayscale Map Video CharacteristicsPixel Position ConnectorsVideo Connector J3 Pinouts Video Connector J3Backlight Power Connector J1 Pinouts Dimming Connector J2Backlight Power Connector J1 Dimming Connector J2 PinoutsDimming Optical FeaturesViewing Angle Response TimesDimming Control Interfacing Backlight Dimming ModesBacklight Dimming Modes Inverting the Display Inverting the DisplayLuminance Variation Due to Ambient Temperature Temperature ConsiderationsThermal Shutdown Warm-up Characteristic Display DimensionsDisplay Dimensions Support and Service Description of WarrantyOrdering Information OM600-01