RTscan RT214 Integration Manual
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RTscan RT214 Integration Manual

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RT214 Integration Guide
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Summary of Contents for RTscan RT214

  • Page 1 RT214 Integration Guide...

  • Page 2: Table Of Contents

    Contents Introduction..........................................2 Illumination..........................................3 Aimer............................................3 Introduction..........................................4 General Requirements.......................................4 ESD.............................................4 Dust and Dirt........................................4 Ambient Environment..................................... 4 Thermal Considerations....................................5 External Optical Elements....................................5 Mounting............................................ 6 Housing Design.......................................... 7 Optics............................................7 Window Placement......................................7 Window Material and Color.................................... 8 Coatings and Scratch Resistance..................................9 Window Size........................................

  • Page 3: Introduction

    Introduction The RT214 is an area image engine for barcode reading. It includes an illumination LED and an aiming LED. The RT214 complies with IEC 62471:2006 for LED safety. LED Compliance Statement The RT214 contains: a CMOS image sensor and its lens an LED based illumination system •...

  • Page 4: Illumination

    Aimer The RT214 contains a red LED aimer to help the user to easily position the target barcode within the engine’s field of view to increase scan efficiency. The aiming pattern can be turned On or Off. It is advisable to turn it on when scanning barcodes in regular circumstances.

  • Page 5: Introduction

    Dust and Dirt The RT214 must be sufficiently enclosed to prevent dust particles from gathering on the lens and circuit board. Dust and other external contaminants will eventually degrade the engine’s performance.

  • Page 6: Thermal Considerations

    Thermal Considerations Electronic components in the RT214 will generate heat during the course of their operation. Operating the RT214 in continuous mode for an extended period may cause temperatures to rise on CPU, CIS, LEDs, DC/DC, etc. Overheating can degrade image quality and affect scanning performance. Given that, the following precautions should be taken into consideration when integrating the RT214.

  • Page 7: Mounting

    Mounting The illustrations below show the mechanical mounting dimensions (unit: mm) for the RT214. Figure 2-1 Note: Tolerance of dimension is ±0.15mm.

  • Page 8: Housing Design

    It is recommended to use baffles or matte-finished dark internal housing colors. Optics The RT214 uses a sophisticated optical system. An improperly designed internal housing or improper selection of window material can degrade the engine’s performance. Window Placement The window should be positioned properly to let the illumination and aiming beams pass through as much as possible and no reflections back into the engine (reflections can degrade the reading performance of the engine).

  • Page 9: Window Material And Color

    Figure 2-2 Table 2-2 Distance from the front of the engine housing (b) Minimum Angle (Tilted Window) 10mm 15mm 20mm Uncoated, minimum window positive tilt (+w) 35° 30° 28° Uncoated, minimum window negative tilt (-w) Window Material and Color Window material must be clear. Use only cell-cast plastics or optical glass. PMMA and chemically tempered glass are recommended.

  • Page 10: Coatings And Scratch Resistance

    Coatings and Scratch Resistance Scratch on the window can greatly reduce the performance of the RT214. It is suggested to use abrasion resistant window material or coating. The following introduces two commonly-used types of coatings: •...

  • Page 11: Window Size

    Window Size The window must not block the field of view and should be sized to accommodate the aiming and illumination envelopes shown below. Horizontal: Figure 2-3...

  • Page 12: Roll, Skew And Pitch

    Three different reading angles, roll, skew and pitch are illustrated in Figure 2-6. Roll refers to rotation around the Z axis, skew to rotation around the X axis and pitch to rotation around the Y axis. For the engine’s technical specifications, please visit the RTscan website or contact your dealer.

  • Page 13: Ambient Light

    Eye Safety The RT214 has no lasers. It uses LEDs to produce illumination beam. The LEDs are bright, but testing has been done to demonstrate that the engine is safe for its intended application under normal usage conditions. However, the user should...

  • Page 14: Power Supply

    Power Supply Do not power up the RT214 until it is properly connected. Be sure the power is cut off before connecting a cable to or disconnecting a cable from the host interface connector. Hot-plugging could damage the engine. Unstable power supply or sharp voltage drops or unreasonably short interval between power-ons may lead to unstable performance of the engine.
  • Page 15 Working Current Figure 3-1 Working Current（Aimer off） Figure 3-2...
  • Page 16 Working Current（Illumination off） Figure 3-3 Max Impulse Current When Powered On Figure 3-4...
  • Page 17 500mA. Ensure that Rdc of the cable is controlled within 0.35Ω by shortening FPC cable, increasing power line and ground line width, etc. Avoid using long cables to connect the RT214. Power consumption...

  • Page 18: I/O Voltage

    I/O Voltage VDD=3.3 V, GND =0 V, T=25°C Table 3-3 Parameter Condition Minimum Typical Maximum Unit Except nTRIG pin Except nTRIG pin Only nTRIG pin 2.2 (VDD-1.1) Only nTRIG pin 2.9（VDD-0.4） Iol= 4mA~16mA Ioh= 4mA~16mA Note: The high and low level threshold of nTRIG is related to the external voltage VDD. The input low level VIL of nTRIG should be below VDD-1.1, and the input high level VIH should be above VDD-0.4.

  • Page 19: Timing Sequence

    Timing Sequence Power Up Timing Sequence 215ms 25ms 185ms USB_D+ USB_D- nTRIG nRST Figure 3-5...
  • Page 20 Ensure that all communication interface data has been transmitted before powering off. The RT214 has a 100K pull-up on the nTRIG signal. During the period between power-on and bootloader execution, the user should not lower the nTRIG signal. If nTRIG is set high before power-on, it should meet the duration of E (E=0~1ms) as shown in Figure 3-4.
  • Page 21 Power Down Timing Sequence USB_D+ USB_D- nTRIG nRST Figure 3-8 Note: When powering down the RT214, cut off the power and ensure levels of TXD, RXD, USB_D+, USB_D-, nTRIG and nRST signal are kept low.

  • Page 22: Interface Pinouts

    The physical interface of the RT214 consists of a 13-pin FPC connector: 13-pin FPC connector can be used as TTL-232 interface or USB interface. • The figure below illustrates the position of the connector on the RT214, as well as the pin 1. Figure 4-1 13-pin FPC Connector The following table lists the pin functions of the 13-pin FPC connector (if you don’t use 13pin out, please ignore this and refer to the 12-pin...
  • Page 23 ※ 3 This output signal can be used by an external LED to indicate good read status. The nGoodRead pin produces a high output (default duration: 20ms, user-programmable) when a good read occurs. The Good Read LED can be programmed On or Off. To learn how to program these parameters, please see the RT214 user guide.
  • Page 24 Beeper output Good Read LED output nRST Reset signal input nTRIG Trigger signal input Note: please remember your device’s TXD should be connected to RXD of RT214, and RXD to TXD. The 12-PIN connector is shown as below. Figure 4-2...

  • Page 25: Connector Specifications

    Connector Specifications The RT214 is equipped with a 13-pin FPC connector. The connector is supplied by Hirose Corporation, Model No.: FH35C-13S- 0.3SHW(50). For more information about the connector, please visit https://www.hirose.com/. Note: In order to improve the connecting stability,using the downward connection priority.

  • Page 26: Beeper Circuit

    Beeper Circuit The circuit below is used to drive an external beeper. The nBEEPER signal is from PIN 5 of the 13-pin FPC connector. Figure 5-2 Trigger Circuit The circuit below is used to provide the engine with a signal to trigger a scan and decode session. The nTRIG signal is from PIN 2 of the 13-pin FPC connector.
  • Page 27 Figure 5-3 External Illumination Control Circuit Pin 6 (Ext.LED.Crtl) on the13-pin FPC connector is the external illumination control signal. I/O is in the Floating state before initialization. When the external illumination is not enabled, I/O is configured as the input pin. When enabled, I/O is the output pin in working mode and input pin in the sleep mode.

  • Page 28: Evk

    The EVK is provided to help users to test and evaluate the RT214, which contains beeper & beeper driver circuit, LED & LED driver circuit, and trigger, TTL-232 to RS-232 converter, RS-232 & USB interfaces, reserved signal debugging interface, etc. The RT214 can be connected to the EVK via a 13-pin FPC cable to 12-PIN FPC cable.

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