Newland NLS-EM3090 Скачать руководство пользователя страница 21

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Good Read LED

The EM3090 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 signal

from the LED pin turns from a low level into alternation of high and low levels and a while later 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 LED driver circuit is provided for reference.

Содержание NLS-EM3090

Страница 1: ...NLS EM3090 OEM Scan Engine Integration Guide...

Страница 2: ...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 3: ...Revision History Version Description Date V1 0 0 Initial release August 14 2015...

Страница 4: ......

Страница 5: ...Thermal Considerations 2 Installation Orientation 3 Optics 3 Window Placement 3 Window Material and Color 4 Scratch Resistance and Coating 4 Window Size 4 Ambient Light 5 Eye Safety 5 Mounting 5 Fron...

Страница 6: ...Connector 10 Dimensions of the Host Interface Connector 11 FFC Cable 11 Cable Connection 12 Communication Interfaces 12 Control Interfaces 13 Reset 13 Trigger 13 Beeper 14 Good Read LED 15 Chapter 5 D...

Страница 7: ...w finder that produces a bar shaped aiming pattern 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...

Страница 8: ...onment The following environmental requirements should be met to ensure good performance of the EM3090 Operating Temperature 20 to 55 Storage Temperature 40 to 80 Humidity 5 95 non condensing Thermal...

Страница 9: ...tance is measured from the front of the engine housing to the furthest surface of the window Avoid unwanted reflections and use thin material for window so as to reach better reading performance As sh...

Страница 10: ...with spectral transmittance of illumination and aiming beams over 90 and haze less than 1 Whether to use an anti reflection coating or not depends on the material and application needs Scratch Resist...

Страница 11: ...ting has been done to demonstrate that the engine is safe for its intended application under normal usage conditions However the user should avoid looking into the beam Mounting The illustrations belo...

Страница 12: ...mm Left View unit mm Bottom View unit mm The bottom view shows the mounting screw specification M2 machine screw with an internal diameter of 2mm Note that the part of mounting screws into the engine...

Страница 13: ...y short interval between power ons may lead to unstable performance of the engine Do not resupply the power immediately after cutting it off The minimum interval must exceed 2 seconds Ripple Noise The...

Страница 14: ...8 Current Ta 25 VCC 3 3V Parameter Average Maximum Unit IOP 190 mA IStandby 7 mA ILow power 5 uA...

Страница 15: ...put Output USB D differential data signal 7 D Input Output USB D differential data signal 8 GND Power supply ground 9 BUZ Output Beeper output For the information of external beeper driver circuit see...

Страница 16: ...s host interface connector is a 12 pin ZIF socket bottom contact which can be used to connect a host device e g software development board EVK with an FFC cable The following figures show the locatio...

Страница 17: ...be used to connect the EM3090 to a host device The cable design must be consistent with the following specifications shown below Use reinforcement material for the connectors on the cable and reduce...

Страница 18: ...m architectures For those requiring RS 232 a TTL 232 to RS 232 conversion circuit is needed USB HID KBW Based on USB connection the engine s transmission is simulated as USB keyboard input It works on...

Страница 19: ...r low for a specified time period causes the EM3090 to start a scan and decode session The time period varies from one scan mode to another Anti shake mechanism is used in level trigger mode For this...

Страница 20: ...output to an external driver circuit for generating audible feedback to the user to indicate statuses like power up good read or operation error The PWM output is not strong enough to drive a beeper s...

Страница 21: ...LED to indicate a good read status When a good read occurs the signal from the LED pin turns from a low level into alternation of high and low levels and a while later back to a low level This Good Re...

Страница 22: ...ircuit LED LED driver circuit trigger reset buttons TTL 232 to RS 232 converter TTL 232 to USB converter RS 232 USB interfaces etc The EM3090 can be connected to the EVK via a 12 pin FFC cable type 1...

Страница 23: ...s TEL 31 0 345 87 00 33 FAX 31 0 345 87 00 39 Email info newland id com WEB www newland id com Tech Support tech support newland id com Newland North America Inc Address 46559 Fremont Blvd Fremont CA...