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RT214 Integration Guide

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Summary of Contents for RT214

Page 1: ...RT214 Integration Guide 3 RT214 Integration Guide...

Page 2: ...sign 7 Optics 7 Window Placement 7 Window Material and Color 8 Coatings and Scratch Resistance 9 Window Size 10 Roll Skew and Pitch 11 Ambient Light 12 Eye Safety 12 Power Supply 13 Ripple Noise 13 DC...

Page 3: ...code reading It includes an illumination LED and an aiming LED LED Compliance Statement The RT214 complies with IEC 62471 2006 for LED safety The RT214 contains a CMOS image sensor and its lens an LED...

Page 4: ...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...

Page 5: ...tion is not provided on the engine s I O interface It is advised to take corresponding protection measures when integrating the engine The engine is shipped in ESD safe packaging Always exercise care...

Page 6: ...performance Given that the following precautions should be taken into consideration when integrating the RT214 Reserve sufficient space for good air circulation in the design Avoid wrapping the RT214...

Page 7: ...RT214 Integration guide 6 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: ...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...

Page 9: ...2 3 When using a clear plastic window it is recommended to apply anti reflection AR coating on it PMMA Cell cast acrylic When fabricated by cell casting has very good optical quality and low initial...

Page 10: ...eflection AR coatings can be applied to window surfaces to reduce reflected light from the window back into the engine Multi layer AR coatings on windows help to achieve less than 0 5 reflectance and...

Page 11: ...RT214 Integration guide 10 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: ...fferent 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 en...

Page 13: ...cy pulsed light can result in performance degradation 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...

Page 14: ...to place a 22uF and a 100nF X5R or X7R ceramic capacitor beside the power input pin on the connector which is soldered on the board The capacitor mounted on the external input power supply is recomme...

Page 15: ...14 RT214 Integration guide Working Current Figure 3 1 Working Current Aimer off Figure 3 2...

Page 16: ...15 RT214 Integration guide Working Current Illumination off Figure 3 3 Max Impulse Current When Powered On Figure 3 4...

Page 17: ...recommended that the external VDD should provide at least a current of 500mA Ensure that Rdc of the cable is controlled within 0 35 by shortening FPC cable increasing power line and ground line width...

Page 18: ...0 8 V VIH Except nTRIG pin 2 V VIL 1 Only nTRIG pin 2 2 VDD 1 1 V VIH 1 Only nTRIG pin 2 9 VDD 0 4 V VOL Iol 4mA 16mA 0 4 V VOH Ioh 4mA 16mA 2 4 V Note The high and low level threshold of nTRIG is re...

Page 19: ...RT214 Integration guide 18 Timing Sequence Power Up Timing Sequence VDD BUZ TXD RXD USB_D USB_D nTRIG nRST Figure 3 5 215ms 25ms 5ms 185ms A B C D E...

Page 20: ...C_3V3 reaches 3 3V 3 Ensure that all communication interface data has been transmitted before powering off 4 The RT214 has a 100K pull up on the nTRIG signal During the period between power on and boo...

Page 21: ...ion guide 20 Power Down Timing Sequence VDD TXD RXD 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...

Page 22: ...ou don t use 13pin out please ignore this and refer to the 12 pin definition below Table 4 1 PIN Signal I O State Function Remark 1 GND Power supply ground 2 nTRIG I Pull up Trigger signal input 100k...

Page 23: ...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 For the external LED circuit design please see the Good R...

Page 24: ...nd 4 RXD I TTL level 232 receive data 5 TXD O TTL level 232 transmit data 6 USB_D USB_D signal 7 USB_D USB_D signal 8 NC 9 BUZ O Beeper output 10 LED O Good Read LED output 11 nRST I Reset signal inpu...

Page 25: ...e visit https www hirose com Note 1 In order to improve the connecting stability using the downward connectionpriority 2 Do not close the connector before inserting the FPC cable 3 Please avoid operat...

Page 26: ...and R2 as 33 C1 is used to eliminate the vibration of mechanical keys Generally 1nF 10nF ceramic capacitors are recommended When ESD protection is required ESD protector can be added to the external c...

Page 27: ...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 For exte...

Page 28: ...K 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 sig...

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