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USER MANUAL
LT3BC Series
LED backlights
v1.1 - eng
LIGHTING

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Table of Contents
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Summary of Contents for opto engineering LT3BC Series

  • Page 1 USER MANUAL LT3BC Series LED backlights v1.1 - eng LIGHTING...
  • Page 2: Table Of Contents

    Contents GENERAL INFORMATION Disclaimer ........Forbidden use .
  • Page 3 Connectors and pinout ....... . . Electrical specifications ....... . . Electrical protections .
  • Page 4: General Information

    1 GENERAL INFORMATION 1.1 Disclaimer Always use and store Opto Engineering® products in the prescribed conditions in order to ensure their proper operation: failing to comply with the prescribed conditions may shorten the product lifetime and/or result in malfunctioning, performance degradation or failure.
  • Page 5: Revisions

    LT3BC | USER MANUAL • This device has limited protection against transients caused by inductive loads. If necessary, use external protection devices like fast diodes or other specific transient protectors; • Do not allow foreign objects to enter the unit or drop into holes, terminals and other openings or gaps.
  • Page 6: Ordering Code

    LT3BC | USER MANUAL 1.4 Ordering code The product part number is composed as follows: LT3BCZZZYYY-X where ZZZ is the label of the illumination area height, YYY is the label of the illumination area width and X is the label of the color variant. The ordering code is explained more precisely in Table 2. SIZE Code Description...
  • Page 7: Warranty And Certifications

    LT3BC | USER MANUAL 2 WARRANTY AND CERTIFICATIONS 2.1 Warranty The device warranty is 12 months from the effective delivery date with reference to the device serial number. Warranty covers the replacement or the repair of the defective part (components, device or part of it) with the exclusion of dismantling and shipping costs.
  • Page 8: Rohs, Reach And Weee

    LT3BC | USER MANUAL • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver isconnected. • Consult the dealer or an experienced radio/TV technician for help. 2.4 RoHS, REACH and WEEE LT3BC products are conformal to the following directives and standards: •...
  • Page 9: Introduction

    3 INTRODUCTION 3.1 Manual and conventions Opto Engineering® SpA, with its registered office in Strada Circonvallazione Sud 15, 46100 Mantova (Mn) - Italy, hereinafter the manufacturer, provides all the necessary information in this installa- tion, use and maintenance manual in a clear and simple way to install, use and service the LT3BC products.
  • Page 10: Storage And Use Conditions

    LT3BC | USER MANUAL This label is used to identify the part number and serial number of the product and contain some basic information on power consumption and current draw. A box label example is shown in Fig- ure 1. A cable tag label example is shown in Figure 2. Figure 1: Example of box label.
  • Page 11: Photobiological Safety

    3.4 Photobiological safety LT3BC series has been tested against EN 62471:2008 (photobiological safety of lamps and lamp system). The norm classifies LED lightings in 4 distinct groups, according to their hazardousness...
  • Page 12 ZZZ+YYY > 600 Exempt Exempt Exempt Continuous: 1 Strobe: Exempt -IR850 Continuous: 1 Strobe: Exempt Table 5: EN62471 risk group of LT3BCZZZYYY-X (see Section 1.4). degree. For LT3BC series, the risk group is reported in Table 5. v1.1 - eng...
  • Page 13: Cleaning And Maintenance

    LT3BC | USER MANUAL 3.5 Cleaning and maintenance When cleaning the product, please remember: • To avoid disassembling the product. • To avoid liquids or inappropriate cleaning chemicals like benzene, alcohol, spray-like clean- ers. • To use an appropriate soft cloth or soft brush. The opaline of the product can be cleaned using compressed air or a cotton swab soaked with isopropyl alcohol.
  • Page 14: Getting Started

    LT3BC | USER MANUAL 4 GETTING STARTED 4.1 Overview LT3BC products are high power LED backlights with integrated electronics. LT3BC LED backlights are designed to operate in both continuous and pulsed mode with an easy hardware interface. Also the boosted mode is allowed, which offers the possibility to have in- creased continuous power delivered for a time duration up to 4.2 Accessories As schematized in Table...
  • Page 15 LT3BC | USER MANUAL Parameters Value Thickness Transmission Degree of polarization 99.98 Extinction ratio < 0.01 Spectral range Table 7: Technical specifications of the additional accessory polarizing filters PLLT3BC-H and PLLT3BC-V. Notice that the polarizing filter is not available for the LT3BCZZZYYY-IR850 models and for the models with ZZZ,YYY Parameters Value...
  • Page 16: Technical Specifications

    LT3BC | USER MANUAL 5 TECHNICAL SPECIFICATIONS 5.1 LED color The product is available with different LED color options depending on the specific model. In Table you will find the correspondence between the model suffix and the color with its peak wave- length.
  • Page 17 LT3BC | USER MANUAL -B LED color spectrum -IR850 LED color spectrum Wavelength [nm] Wavelength [nm] Figure 4: LED’s emission spectrum of each color model. v1.1 - eng...
  • Page 18: Connectors And Pinout

    LT3BC | USER MANUAL 5.2 Connectors and pinout The M12 straight plug male connector is schematized in Figure in order to show the pins. The functionality of the pins are shown in Table 10. It is important to notice that the variants with ZZZ or YYY (see Section 2) exhibit two connectors.
  • Page 19: Electrical Specifications

    LT3BC | USER MANUAL CAUTION: For models that require two or more power inputs, ensure to connect all power cables to the same power supply source. 5.3 Electrical specifications The voltage supported by the pins in Figure for the standard variant device are: Voltage 1: Power V (Maximum Working voltage),...
  • Page 20: Operating Modes

    LT3BC | USER MANUAL 5.6 Operating modes The LEDs can operate in three different modes: the continuous mode, the boosted mode and the strobe mode that are schematized in Figure and described more precisely in the following sec- tions. Figure 6: LED power delivered in the three modalities. The time scale of the strobe mode is different from the other ones.
  • Page 21: Continuous Mode

    LT3BC | USER MANUAL 5.6.1 Continuous mode Continuous operations are available with the possibility of delivering continuous electrical power on the LED. In order to select the -continuous mode, there are two different options: 100% 1. the pin NPN must be kept at N P N 2.
  • Page 22: Strobe Mode

    LT3BC | USER MANUAL 5.6.3 Strobe mode Operations in strobe mode are available with the possibility of delivering pulsed electrical power on the LEDs (about % of peak power with respect to the continuous mode power). When V or V, the LEDs are turned on for a time duration that corresponds to >...
  • Page 23: Signal Timing

    LT3BC | USER MANUAL 5.6.4 Signal timing Figure 8: Scheme of the input trigger signal and of the corresponding LED output. For strobe mode and boosted mode, let’s refer to Figure for the definitions of . The of f period is .
  • Page 24: Analog Regulation Use

    LT3BC | USER MANUAL 5.6.5 Analog regulation use The electrical power delivered on the LED in continuous mode can be regulated with power mod- ulation by means of the connection of the Pin 5 (analog input) to an input voltage 100% V, without using the PNP and NPN input signals.
  • Page 25: I/O Circuitry

    LT3BC | USER MANUAL 5.8 I/O circuitry 5.8.1 NPN input Figure 10: Scheme of the NPN input. The NPN logic input scheme is depicted in Figure 10. Please note that the NPN input is in pull-up configuration. Thus, it could be a current source with respect to the controller connected. v1.1 - eng...
  • Page 26: Pnp Input

    LT3BC | USER MANUAL 5.8.2 PNP input Figure 11: Scheme of the PNP input. The PNP logic input scheme is depicted in Figure 11. Please note that the PNP input is a current sink with respect to the controller connected. v1.1 - eng...
  • Page 27: Analog Dimming Input

    LT3BC | USER MANUAL 5.8.3 Analog dimming input Figure 12: Scheme of the analog dimming input. The analog dimming input scheme is depicted in Figure 12. The DC input impedance is = 11.5 . A low-pass filter (cut-off frequency KHz) cuts high-frequency input signals. Ω...

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