Chapter 3 Electrical characteristics Introduction The E4000 barcode reading engine uses the world's leading intelligent image recognition technology to combine advanced image recognition algorithms with advanced chip design and manufacturing technology, which greatly simplifies the design difficulty of one-dimensional barcode reading products and establishes one-dimensional images. An excellent benchmark for high performance, high reliability and low power consumption.
Chapter 3 Electrical characteristics CATALOG Chapter 1 Introduction ................................................................................................................................ 1 General Requiremetns ........................................................................................................................ 1 ESD ............................................................................................................................................. 1 Dustproof ...........
Chapter 3 Electrical characteristics Chapter 1 Introduction General Requiremetns ESD The E4000 has been designed to protect against static electricity and uses anti-static packaging. However, anti-static measures should be taken during unpacking and use, such as grounding wrist straps and grounding of the work area. Dustproof The E4000 must be sufficiently sealed during storage and use to prevent dust, particles or other contaminants from adhering to the lens, circuit board, etc.
Chapter 3 Electrical characteristics Chapter 2 Installation Mounting orientation When the E4000 is properly placed or installed, its front view looks like the picture below. In the middle is the lens, the two sides are aimed, the upper is the decoding circuit board, and the screw mounting holes are below. At this time, the relative orientation of the image captured by the E4000 correctly corresponds to its orientation.
Chapter 3 Electrical characteristics Window material and color The material and color of the window should be chosen in consideration of the illumination of the E4000 and the wavelength of the light wave that the CIS can respond to (mainly red and white), so that the light transmittance is as high as possible, while ensuring the lowest possible blur and uniform refractive index. .
Chapter 3 Electrical characteristics E4000 Front view（：mm） E4000 Side View（：mm） E4000 Top view（：mm） 4
Chapter 3 Electrical characteristics E4000 Elevation view（：mm） Chapter 3 Electrical characteristics Power requirement Power input must be allowed after the E4000 is connected. If the E4000 (with hot plug) is plugged or unplugged while the cable is live, the electronic components of the E4000 may be damaged. Make sure that the power is turned off while the cable is being inserted.
Chapter 3 Electrical characteristics operation to achieve the lowest consumption. E4000 is less than 4s from power on to completion. After turning off the power, it is recommended to allow the power input to be turned on again after more than 500ms. Ripple noise Since the power input of the E4000 is directly supplied to the image sensor and the decoder chip, a low ripple noise power input is required to ensure stable operation.
Chapter 3 Electrical characteristics DC characteristics Operating Voltage Ta=25℃ parameter Describe Min Standard Max VDD Interface supply voltage 3 . 2 3. 3 3.5 V VIH Input high level - - V VIL Input low level - 0.2* VDD V VOH Output high level - - V VOL Output low level - 0.1* VDD V 0 . 7 *V D 0 D . 9 * V D D Operating Currenct Ta=25 ℃，VDD=3.
Chapter 4 Interfaces Interface Description The table below lists the names and signal descriptions for the individual pins of the E4000's 12-pin connector. 说明 PIN# Signal Name I/O 1 NC NC 2 VDD - 3.
Connector Chapter 4 Interfaces The figure below is a schematic of the E4000 connector. It uses a ZIF 12 PIN lower contact socket and is connected to the peripheral (host) with a flexible cable. The lower icon shows the size of the socket (unit: mm). Flat Cable The 12PIN flexible cable used in the E4000 connector can be designed as the same or different-sided cable according to the application. The specifications must meet the following requirements.
Chapter 4 Interfaces Communication Interface : The E4000 communicates with the host computer in the following ways: TTL TTL level signal (TTL-232): This interface accommodates most system architectures. For some systems that require an RS-232 form factor, a TTL-232 to RS-232 conversion circuit is required. USB HID-KBW: A USB-based keyboard emulation device that can be directly connected to a PC without the need to install a driver.
Buzzer signal The Buzzer (Beeper) signal output is provided in the E4000 using the PWM mode in the Buzz pin (PIN9). When the E4000 is started, the reading is successful, etc., the PWM signal is output on the Buzz pin according to the setting. The signal output can drive the buzzer to sound a sound through an external matching circuit. The Buzz pin has limited load capacity and cannot directly drive the buzzer to sound, so as not to damage the chip on the E4000.
Decode LED signal The LED (PIN 10) pin of the E4000 provides a level cue signal when decoding is successful, and is typically used as an input control signal for externally decoded LED cues. When the decoding is successful, the LED pin will output a high-level pulse with a duration of approximately 300ms and eventually return to a low level. The LED signal output pin has a limited load capacity and cannot directly drive the LED. A matching LED driver circuit is required.
