Chapter 3 Electrical characteristics

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.

1D EAN-8、EAN-13、EAN-13 2 add-on、 EAN-13 5 add-on、ISSN、ISBN、UPC-A、UPC-E、

Code 11、Code 32、Code 39、Code 39FULLASCII、、Code 93、Code 128、Codabar、

Industrial 2 of 5、Interleaved 2 of 5、Matrix 2 of 5、ISBT、GS1-128、GS1 DataBar

（RSS14）、 GS1 DataBar Limited、 GS1 DataBar Expanded

2D PDF417、MicroQR、 Data Matrix、QR-code、Aztec

Aiming Indication

TheE4000's aiming is to aim with a red strip of red light, white illumination.


CATALOG Chapter 1 Introduction ................................................................................................................................ 1

General Requiremetns ........................................................................................................................ 1 ESD ............................................................................................................................................. 1 Dustproof ...................................................................................................................................... 1 Envoirnmental................................................................................................................................ 1 Thermal considerations.................................................................................................................... 1

Chapter 2 Installation ................................................................................................................................. 2 Mounting orientation ............................................................................................................................ 2 Optical correlation ............................................................................................................................... 2

Window placement ......................................................................................................................... 2 Window material and color .............................................................................................................. 3 Window scratch and coating ............................................................................................................. 3 Aimbent Light................................................................................................................................ 3 Safe Use ........................................................................................................................................ 3 Mounting ...................................................................................................................................... 3

Chapter 3 Electrical characteristics ............................................................................................................ 4 Power requirement................................................................................................................................. 5 Ripple noise.......................................................................................................................................... 6 DC characteristics.................................................................................................................................. 7

Operating Voltage .......................................................................................................................... 7 Operating Currenct ......................................................................................................................... 7

Interface Description .............................................................................................................................. 8 Connector............................................................................................................................................. 9 Flat Cable ............................................................................................................................................. 9

Chapter 4 Interfaces................................................................................................................................. 13 Communication Interface : .................................................................................................................... 13 Trigger control .................................................................................................................................... 13 Buzzer signal ...................................................................................................................................... 14 Decode LED signal .............................................................................................................................. 15


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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. Dust particles or contaminants can degrade engine performance and even affect

engine usage.

Envoirnmental

The normal use of the E4000 is subject to the following environmental requirements.

Operatin Temperature -20℃ ~ 55℃

Storage Temperature -20℃ ~ 60℃

Humidity 5% ~95%

Thermal considerations

The E4000 emits heat during operation. In the case of continuous operation at full speed for a long time, the heat will

accumulate to increase the temperature of the CIS chip and the decoder chip. Although the E4000 can be adapted to work

in high temperature environments, in high temperature environments, the image noise of the CIS is increased to degrade the

image quality, and the reading performance may be degraded. When considering the application of the E4000 in a high-

temperature environment, it is recommended to test whether the possible read performance degradation is within an

acceptable range, and then determine whether to perform proper heat dissipation design.

At the time of design, the E4000 is reserved for space that can form natural convection or forced convection.

Avoid wrapping the E4000 with insulation such as rubber.


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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.

Optical correlation

Window placement

The window is made of transparent media mounted on the front of the E4000engine to isolate the inside and

outside of the product and preserve the light path for the E4000 to read the bar code. The window should be placed so

that the illumination and aiming beams are emitted as much as possible and the reflections are prevented from entering

the engine. If the illumination beam is reflected into the engine, it will reduce the engine's read performance.

The window placement distance is obtained by measuring the distance between the E4000 front plane and the farthest

plane of the window. In order to ensure good reading performance, the vertical distance between the far end face of the

window and the front end face of the E4000 is no more than 3mm, and the vertical distance between the near end face of

the window and the front end face of the E4000 is not more than 2mm.

If the window needs to be tilted, the distance requirement is the same as the parallel installation. The tilt angle should

ensure that there are no various beams that can be reflected into the lens to ensure read performance.


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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. . PMMA or optical glass is usually used, and

the window material has a red light transmittance of more than 90% and a haze of less than 1%. Whether or not the coating

is applied to the window material depends on the specific material and application.

Window scratch and coating

Scratch on the window will reduce the reading performance of the E4000. It is recommended to consider the window

anti-scratch and anti-fouling design. Consider choosing a high-abrasion material or a wear-resistant coating on the window

material.

Aimbent Light

The E4000 can achieve better performance in the presence of ambient light, and can be well adapted to the fluorescent

flicker of 50~60Hz common lighting AC, but in high frequency pulse flash environment, performance may be due to

interference. reduce.

Safe Use

The E4000 uses light-emitting diodes (LEDs) to form the aiming indication pattern. The wavelength range of the light

wave generated by the LED under normal use is safe, but it should still avoid direct-viewing the LED or directing the beam

to the human eye during use to avoid causing Discomfort.

Mounting

When integrating the E4000, refer to the following physical size specifications. Structural design Note that other

components cannot oppress the E4000 device.


4

E4000 Front view（：mm）

E4000 Side View（：mm）

E4000 Top view（：mm）


5

E4000 Elevation view（：mm）


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.

Poor power connections, or short-closed power-off operations, or excessive voltage-dropping pulses may cause the

E4000 to be in a stable, normal state of operation and maintain a stable power input.

The E4000 does not actively control the power supply itself. In the application, the power can be cut off to stop the


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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. It is recommended to control the ripple noise to within 50mV (peak-to-

peak), at least not to exceed 100mV.(peak-to-peak).


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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 0

.7*VDD

- - V

VIL Input low level - - 0.2*

VDD V

VOH Output high level 0

.9*VDD

- - V

VOL Output low level - - 0.1*

VDD V

Operating Currenct

Ta=25 ℃，VDD=3.3V

Operating Current Sleep Current

142mA 70mA mA

Chapter 4 Interfaces

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Interface Description

The table below lists the names and signal descriptions for the individual pins of the E4000's 12-pin connector.

。

PIN# Signal Name I/O 说明

1 NC NC -

2 VDD - 3.3V power input

3 GND - GND

4 RX Input TTL-232 input

5 TX Output TTL-232 output

6 USB_D- Input/output

USB_D-signal

7 USB_D+ Input/output

USB_D+signal

8 NG - Null

9 Buzz output

10 LED Input

11 NG -

12 nTrig Input Trigger key input signal, hold low level for more than 10ms to trigger

reading.


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Connector

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. To ensure the reliability and

stability of the connection, use a reinforcing material at the connection end of the cable and reduce the impedance on

the wire.

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页


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.

The TTL-232 serial communication interface available on the E4000 supports speeds from 2400bps to 115200bps. The

default configuration of the serial communication interface of the E4000 is 9600bps, 8 data bits, no parity, and 1 stop bit.

The hardware flow control and software flow control functions of the serial communication interface are not provided on the

E4000.

Trigger control

The nTrig pin (PIN12) indicates a trigger on a low level input and a high level indicates that the trigger is stopped (or

released). The E4000 starts reading after receiving the trigger. After the reading is successful, it will output the decoding

information, and then wait for the trigger signal to stop (or release). During the reading process, the trigger signal is stopped

(or released) and the reading process is terminated. A new reading process requires a re-generation of the trigger signal.

The reading process requires steps such as image acquisition, barcode recognition and interpretation. It is recommended that

the interval between two trigger signals be no less than 50ms. Refer to the following trigger circuit

design:

第 14 页共 14

页

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.

The buzzer drive circuit that can be referred to is as follows:

第 15 页共 15 页

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.

Refer to the matching LED prompt drive circuit as shown below:

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Chapter 3 Electrical characteristics