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EM2039 Series OEM Scan Engine Integration Guide...
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Please read through the manual carefully before using the product and operate it according to the manual. It is advised that you should keep this manual for future reference. Do not disassemble the device or remove the seal label from the device. Otherwise, FuJian Newland Auto-ID Tech. Co., Ltd. does not assume responsibility for the warranty or replacement.
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Revision History Version Description Date V1.0.0 Initial release. May 21, 2013...
Chapter 1 Introduction Product Overview NLS-EM2039 series embedded 2D barcode scan engines, armed with the Newland patented computerized image recognition system, bring about a new era of 2D barcode scan engines. The EM2039s’ decoder chip ingeniously blends technology and advanced chip design &...
Illumination The EM2039 has two red LEDs (wavelength: 625± 10 nm) for supplementary lighting, making it possible to scan barcodes even in complete darkness. The illumination can be programmed On or Off. Since red light is used as illumination and the engine’s lens imaging system is coated with AR film which has obvious anti-reflection effect against red light, the engine shows better reading performance on barcodes printed in non-red colors.
Chapter 2 Installation General Requirements ESD protection has been taken into account when designing the EM2039 and the engine is shipped in ESD safe packaging. Always exercise care when handling the engine outside its package. Be sure grounding wrist straps and properly grounded work areas are used. Dust and Dirt The EM2039 must be sufficiently enclosed to prevent dust particles from gathering on the imager and lens.
Optics 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). The window should be mounted close to the front of the engine (parallel). The maximum distance is measured from the front of the engine housing to the farthest surface of the window.
Window Material and Color Wavelengths of illumination and aiming beams should be taken into consideration when choosing window material and color, to achieve the possible highest spectral transmission, lowest haze level and homogeneous refractive index. It is suggested to use PMMA or optical glass with spectral transmittance over 90% and haze less than 1%.
Fig. 2-5 Fig. 2-6 Ambient Light The EM2039 shows better performance with ambient light. However, high-frequency pulsed light can result in performance degradation. Eye Safety The EM2039 has LEDs that create the aiming and illumination beams. These LEDs are bright, but testing has been done to demonstrate that the engine is safe for its intended application under normal usage conditions.
Mounting The EM2039s provide combined type (imager and decoder board assembled on an L-shaped bracket) and discrete type (imager and decoder board separated) to cater for different mounting needs. For the combined type, the user can simply mount the EM2039 on the target device. The combined type is easy for integration and is suitable for devices with enough space inside.
Chapter 3 Electrical Specifications Power Supply Do not power up the EM2039 until it is properly connected. Be sure the power is cut off before connecting a flexible cable to or disconnecting a flexible cable from the host interface connector. This could damage the engine.
DC Characteristics Operating Voltage T=23° C Parameter Minimum Typical Maximum Unit Operating Voltage Current (@3.3V) Idle Low power I/O Requirements VDD=3.3V, VSS=0V, T=23° C Parameter Minimum Maximum Unit -0.3 0.2*VDD 0.7*VDD VDD+0.3 VDD-0.4...
Chapter 4 Interfaces Connections & Pinouts The EM2039 is equipped with 12-pin FPC connector and Micro USB connector. 12-pin FPC connector can be used as TTL-232 interface or USB interface. Micro USB connector can only be used as standard USB interface. Fig.
TTL-232 The table below describes the pin functions of FPC connector used as TTL-232 interface. PIN# Signal Name Function 232INV Output: High = TTL-232 interface; Low = USB interface Power: supply voltage input Ground: power and signal ground Input: TTL level RS-232 receive data Output: TTL level RS-232 transmit data nCTS Input: TTL level RS-232 clear to send...
The table below describes the pin functions of FPC connector used as USB interface. PIN# Signal Name Function 232INV Output: High = TTL-232 interface; Low = USB interface Power: supply voltage input Ground: power and signal ground Input/Output: USB D- signal Reserved Pin function reserved Input/Output: USB D+ signal...
Host Interface Connectors The EM2039 is equipped with 12-pin FPC connector and Micro USB connector. 12-Pin FPC Connector The EM2039 uses an FFC/FPC connector (CF20121V0R0-LF) manufactured by CviLux. Fig. 4-2...
External Circuits Good Read LED Circuit The circuit below is used to drive an external LED for indicating good read. The left part shows internal Good Read LED driver circuit on the decoder board and the right part shows external circuit that users may utilize in actual application.
Sleep Mode LED Circuit The circuit below is used to drive an external LED for indicating that the engine is in sleep mode. The left part shows internal Sleep Mode LED driver circuit on the decoder board and the right part shows external circuit that users may utilize in actual application.
Wake-Up Circuit The circuit below is used to wake the engine from sleep mode. The right part shows internal driver circuit on the decoder board and the left part shows external circuit that users may utilize in actual application. The nWAKE signal is from Pin 11 of the 12-pin FPC connector. Users can adjust the external circuit and its function as per actual needs, on condition that the external circuit matches the internal circuit.
Chapter 5 Development Tools The EM2039’s development tools include both software and hardware and can be utilized for engine performance evaluation, application development and engine configuration. The EVK is provided to help users to test and evaluate the EM2039, which contains beeper & beeper driver circuit, LED &...
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