MARSON MT82W 2D Wide Angle Scan Engine Installation Guide

: June 12, 2024
: MARSON

MARSON MT82W 2D Wide Angle Scan Engine

MARSON MT82W 2D Wide Angle Scan Engine

INTRODUCTION

The MT82W 2D Wide Angle Scan 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.

The MT82W 2D Scan Engine consists of 2 illumination LEDs, 1 aimer LED and a high-quality image sensor with a microprocessor that contains powerful firmware to control all aspects of operations and enable communication with the host system over the standard set of communication interfaces.

Two interfaces, UART & USB, are available. UART interface communicates with the host system over TTL-level RS232 communication; USB interface emulates a USB HID Keyboard or Virtual COM port device and communicates with the host system over USB.

Block Diagram

Electric Interface

Pin Assignment

Electric Interface
Contact points of connector are facing upwards

Pin#	Definition	I/O	Description	Schematic Example
1	NC	————	Reserved	Leave it unconnected.
2	VCC	————	Supply voltage input.

Must always be
connected to 3.3V
power supply|
3| GND| ————| Power and signal
ground.|
4| RX| Input| UART TTL data input|

Schematic Example Sipex® Vendor P/N: SP232ACT

5| TX| Output| UART TTL data output.|

Schematic Example Sipex® Vendor P/N: SP232ACT

6| DN| Bidirectional| USB Differential Signal
Transmission (USB D-)|
7| DP| Bidirectional| USB Differential Signal
Transmission (USB D+)|
8| NC| ————| Reserved| Leave it unconnected.
9| BUZZ| Output| When scanning is successful (Good Read), it outputs a PWM signal. 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.|
10| LED| Output| When scanning is successful (Good Read), it outputs a high- level pulse with a duration of approx 300ms. The LED signal output pin has a limited load capacity and cannot directly drive the LED. A matching LED driver circuit is required.|
11| NC| ————| Reserved| Leave it unconnected.
12| nTRIG| Input| High: Stop Scanning
Low: Start Scanning| Schematic Example

Electric Characteristics

Operating Voltage

Ta=25°C

Symbol	Ratings	Min	Standard	Max	Unit
V DD	Interface supply voltage	3.2	3.3	3.5	V
V IH	Input high level	V DD x 0.7	—	—	V
V IL	Input low level	—	—	V DD x 0.2	V
V OH	Output high level	V DD x 0.9	—	—	V
V OL	Output low level	—	—	V DD x 0.1	V

*Note:

Exposure to maximum rating conditions for extended periods may affect device reliability

Operating Current

Ta=25°C, VDD=3.3V

Operating Current	Standby Current	Unit
245mA	30mA	mA

Power Requirement

Power input must be allowed after the MT82W is connected. If the MT82W (with hot plug) is plugged or unplugged while the cable is live, the electronic components of the MT82W 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 MT82W to be in a stable, normal state of operation and maintain a stable power input.

The MT82W does not actively control the power supply itself. In the application, the power can be cut off to stop the operation to achieve the lowest consumption.

MT82W 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 MT82W 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).

SPECIFICATIONS

Technical Specifications

Optic & Performance

Light Source| White LED
Aiming| Visible red LED
Sensor| 640 x 480 pixels
Resolution| 3.9mil/ 0.0975mm (1D)

5mil/ 0.125mm (2D)

Field of View| Horizontal 74°
Vertical 58°
Scan Angle| Pitch Angle ±70°
Skew Angle ±70°
Roll Angle 360°
Print Contrast Ratio| 20%
Width of Field| 87mm (13Mil Code39)
Typical Depth Of Field (Environment: 800 lux)| 5 Mil Code39: 28 ~ 64mm
13 Mil UPC/EAN: 28 ~ 86mm
15 Mil Code128: 27 ~ 109mm
15 Mil QR Code: 19 ~ 93mm
6.67 Mil PDF417: 25 ~ 70mm
10 Mil Data Matrix: 23 ~ 77mm
Physical Characteristics
Dimension| W22 x L14.6 x H11.7 mm
Weight| 3.3g
Color| Black
Material| Plastic
Connector| 12pin ZIF (pitch=0.5mm)
Cable| 12pin flex cable (pitch=0.5mm)
Electrical
Operation Voltage| 3.3VDC±5%
Working Current| 175mA (Typ.) 220mA (Max)
Standby Current| 140mA (Typ.)
Sleep Current| 20mA (Typ.)
Connectivity

Interface

| UART (TTL-level RS232)
USB (HID Keyboard)
USB (Virtual COM)
User Environment
Operating Temperature| -10°C ~ 70°C
Storage Temperature| -40°C ~ 70°C
Humidity| 5% ~ 95%RH (Non-condensing)
Ambient Light| 100,000 Lux (Sunlight)
**1D Symbologies| UPC-A / UPC-E EAN-8 / JAN-8 EAN-13 / JAN-13
Code128 / GS1-128 / ISBT 128
Code39 / Code32 Code93
Code11 Codabar
Interleaved 2 of 5
Industrial 2 of 5
Matrix 2 of 5
Standard 2 of 5 MSI Plessey Plessey
GS1 Databar
GS1 Databar Limited GS1 Databar Expanded
2D Symbologies| QR Code
Micro QR Code PDF417
MicroPDF417 Data Matrix Aztec
Han Xin
Regulatory
ESD| Functional after 4KV contact, 8KV air discharge (It requires housing that is designed for ESD protection and stray from electric fields.)
Environmental**| RoHS 2.0

Interface

UART Interface

Below are default communication protocols:
Baud rate: 9600
Data Bits: 8
Parity: None
Stop Bit: 1
Handshaking: None
Flow Control Timeout: None
ACK/NAK: OFF
BCC: OFF

Interface Configuration Barcode:

UART

USB HID Interface

Interface Configuration Barcode:

USB HID (Default)

USB VCP Interface

Interface Configuration Barcode:

USB VCP

Operation Method

At power-up, the MT82W sends the Power-Up signals over Buzzer and LED pins as an indication that the MT82W enters Standby Mode and is ready for operation.
Once the MT82W triggered by either hardware or software method, MT82W will emit a beam of light which is aligned with the sensor’s field of view.
The area image sensor captures the image of barcode and produces an analog waveform, which is sampled and analyzed by the decoder firmware running on the MT82W.
Upon a successful barcode decoded, the MT82W turns off the illumination LEDs, sending the Good Read signals over Buzzer and LED pins and transmitting the decoded data to the host.

Mechanical Dimension

(Unit = mm)

Front view

Side view

Bottom view

Connector Specification

The figure below is a schematic of the MT82W 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).

NSTALLATION

The scan engine is designed specifically for integration into customer’s housing for OEM applications. However, the scan engine’s performance will be adversely affected or permanently damaged when mounted into an unsuitable enclosure.

Warning: The limited warranty is void if the following recommendations are not adhered to when mounting the scan engine.

Electrostatic Discharge Cautions

All scan engines are shipped in ESD protective packaging due to the sensitive nature of the exposed electrical components.

ALWAYS use grounding wrist straps and a grounded work area when unpacking and handling the scan engine.
Mount the scan engine in a housing that is designed for ESD protection and stray electric fields.

Installation Recommendations

When securing the scan engine by utilizing the machine screws:

Leave sufficient space to accommodate the maximum size of the scan engine.
Do not exceed 1kg-cm (0.86 lb-in) of torque when securing the scan engine to the host.
Use safe ESD practices when handling and mounting the scan engine.
Do not enclose the scan engine with thermal insulation material. Failure of heat dissipation may deteriorate the scan engine’s performance.

Installation Orientation

When the MT82W 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 MT82W correctly corresponds to its orientation.

Window Materials

Following are descriptions of three popular window materials:

Poly-methyl Methacrylic (PMMA)
Allyl Diglycol Carbonate (ADC)
Chemically tempered float glass

Cell Cast Acrylic (ASTM: PMMA)

Cell cast Acrylic, or Poly-methyl Methacrylic is fabricated by casting acrylic between two precision sheet of glass. This material has very good optical quality, but is relatively soft and susceptible to attack by chemicals, mechanical stress and UV light. It is strongly recommended to have acrylic hard-coated with Polysiloxane to provide abrasion resistance and protection from environmental factors. Acrylic can be laser-cut into odd shapes and ultrasonically welded.

Cell Cast ADC, Allyl Diglycol Carbonate (ASTM: ADC)

Also known as CR-39TM, ADC, a thermal setting plastic widely used for plastic eyeglasses, has excellent chemical and environmental resistance. It also has an inherently moderate surface hardness and therefore does not require hard- coating. This material cannot be ultrasonically welded.

Chemically Tempered Float Glass

Glass is a hard material which provides excellent scratch and abrasion resistance. However, un-annealed glass is brittle. Increased flexibility strength with minimal optical distortion requires chemical tempering. Glass cannot be ultrasonically welded and is difficult to cut into odd shapes.

Property	Description
Spectral Transmission	85% minimum from 635 to 690 nanometers
Thickness	< 1 mm
Coating	Both sides to be anti-reflection coated to provide 1% maximum

reflectivity from 635 to 690 nanometers at nominal window tilt angle. An anti- reflection coating can reduce the light that is reflected back to the host case. Coatings will comply with the hardness adherence requirements of MIL-M-13508.

Window Placement

The window placement distance is obtained by measuring the distance between the MT82W 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 MT82W is no more than 3mm, and the vertical distance between the near end face of the window and the front end face of the MT82W 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.

Window Care

In the aspect of window, the performance of MT82W will be reduced due to any kind of scratch. Thus, reducing the damage of window, there are few things have to be noticed.

Avoid touching the window as much as possible.
When cleaning the window surface, please use non-abrasive cleaning cloth, and then gently wipe the host window with the cloth that is already sprayed with glass cleaner.

Ambient Light

The MT82W 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 reduced due to interference.

Safe Use

The MT82W 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.

REGULATIONS

The MT82W scan engine conforms to the following regulations:

Electromagnetic Compliance – TBA
Electromagnetic Interference – TBA
Photobiological Safety – TBA
Environmental Regulations – RoHS 2.0

DEVELOPMENT KIT

MB130 Demo Kit (P/N: 11D0-A020000) includes an MB130 Multi I/O Board (P/N: 9014-3100000) and a micro USB cable. MB130 Multi I/O Board serves as an interface board for MT82W and accelerates the testing and integration with the host system. Please contact your sales representative for ordering information.

MB130 Multi I/O Board (P/N: 9014-3100000)
Development Kit

PACKAGING

Tray (size: 24.7 x 13.7 x 2.7cm): Each tray contains 8pcs of MT82W.
Box (size: 25 x 14 x 3.3cm): Each Box contains 1pc of tray, or 8pcs of MT82W.
Carton (size: 30 x 27 x 28cm): Each Carton contains 16pcs of boxes, or 128pcs of
MT82W.