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Good Read LED

The EM3396 provides a pin (LED, PIN 10) on the host interface connector that can be used by an external

driver circuit to drive an LED to indicate a Good Read status. When a good read occurs, the LED pin

produces a high level output for about 300ms, and then the signal is back to a low level. This Good Read

LED output is not strong enough to drive an LED, so an LED driver circuit is needed.

The following Good Read LED driver circuit is provided for reference.

2N3904

R1 1K

LED

10K

VDD

Содержание NLS-EM3396

Страница 1: ...NLS EM3396 OEM Scan Engine Integration Guide...

Страница 2: ......

Страница 3: ...unction or design at any time without notice The information contained herein is subject to change without prior notice The products depicted in this manual may include software copyrighted by Fujian...

Страница 4: ...ronment section in Chapter 2 2 Modified the Operating Voltage and Operating Current sections in Chapter 3 October 26 2016 V1 0 2 Updated the front side and bottom views in Chapter 2 June 28 2018 V1 0...

Страница 5: ...Thermal Considerations 3 Installation Orientation 3 Optics 4 Window Placement 4 Window Material and Color 4 Scratch Resistance and Coating 5 Window Size 5 Ambient Light 6 Eye Safety 6 Mounting 7 Front...

Страница 6: ...Interfaces 12 Host Interface Connector 12 Dimensions of the Host Interface Connector unit mm 13 FFC Cable unit mm 14 Communication Interfaces 15 Control Interface 16 Reset 16 Trigger 16 Beeper 17 Good...

Страница 7: ...rTM RSS Limited Stacked Expanded versions TM Illumination The EM3396 has two red LEDs for supplementary lighting The illumination can be programmed On or Off The EM3396 uses red LEDs for illumination...

Страница 8: ...reas are used Note The EM3396 s laser diode circled in the figure below is ESD sensitive and rated Class 1A Human Body Model HBM 270V thus ESD protection measures such as the ones mentioned above must...

Страница 9: ...for an extended period may cause temperatures to rise on CIS and decoder chip The following precautions should be taken into consideration when integrating the EM3396 Reserve sufficient space for goo...

Страница 10: ...he window should not exceed a a 0 6mm and the thickness of window should not exceed 2mm If the window is required to be in a tilted position the above distance requirements should be met and tilt angl...

Страница 11: ...atly reduce the performance of the EM3396 It is suggested to use abrasion resistant window material or coating Window Size The window must not block the field of view and should be sized to accommodat...

Страница 12: ...result in performance degradation Eye Safety The EM3396 uses red LEDs to create illumination beam The LEDs are bright but testing has been done to demonstrate that the engine is safe for its intended...

Страница 13: ...7 Mounting The illustrations below show the mechanical mounting dimensions for the EM3396 The structural design should leave some space between components Front View unit mm Side View unit mm...

Страница 14: ...8 Bottom View unit mm...

Страница 15: ...engine Unstable power supply or sharp voltage drops or unreasonably short interval between power ons may lead to unstable performance of the engine Do not resupply the power immediately after cutting...

Страница 16: ...D Voltage Drain Drain 3 0 3 3 3 6 V VIH High Level Input Voltage VDD 0 5 V VIL Low Level Input Voltage 0 5 V VOH High Level Output Voltage VDD 0 3 V VOL Low Level Output Voltage 0 3 V Operating Curren...

Страница 17: ...der chip 2 In the diagram above D shows the reset time If no additional operation is performed to manipulate the Reset signal the power up time can be measured from the point when VDD reaches 3 3V 3 B...

Страница 18: ...B_D differential data signal optional 7 USB_D I O USB_D differential data signal optional 8 NC Not connected 9 Buzz O Beeper output For the information of beeper driver circuit see the Beeper section...

Страница 19: ...nsions of the Host Interface Connector unit mm The EM3396 uses a 12 pin FPC ZIF socket bottom contact model 10051922 1210EHLF manufactured by FCI The socket can be connected to a host device with a FF...

Страница 20: ...sed to connect the EM3396 to a host device The cable design must be consistent with the specifications shown below Use reinforcement material for the connectors on the cable and reduce cable impedance...

Страница 21: ...and 1 stop bit Besides the EM3396 can also communicate with the host device via its USB interface optional 1 USB HID KBW Based on USB connection the engine s transmission is simulated as USB keyboard...

Страница 22: ...EM3396 waits for the voltage at the nTrig pin to turn high or the trigger to be released after sending the data to the Host If the trigger is released during a scan attempt the EM3396 immediately sto...

Страница 23: ...iver circuit for generating audible feedback to the user to indicate statuses like power up or good read The PWM output is not strong enough to drive a beeper thus a beeper driver circuit is needed Th...

Страница 24: ...ate a Good Read status When a good read occurs the LED pin produces a high level output for about 300ms and then the signal is back to a low level This Good Read LED output is not strong enough to dri...

Страница 25: ...driver circuit LED LED driver circuit trigger reset button TTL 232 to RS 232 converter TTL 232 to USB converter RS 232 USB interfaces etc The EM3396 can be connected to the EVK via a 12 pin FFC cable...

Страница 26: ...emont Blvd Fremont CA 94538 USA Tel 510 490 3888 Fax 510 490 3887 Email info newlandna com Web www newlandamerica com Newland Latin America Tel 1 239 598 0068 Fax 1 239 280 1238 Email info newlandla c...