MARSON MT82M Custom Scan Engines User Guide

MARSON MT82M Custom Scan Engines

Product Information

The MT82M is a 2D Scan Engine designed for integration into various devices. This Integration Guide provides detailed information on the electrical interface, pin assignment, external circuit design, and cable specifications.

Introduction
The MT82M Scan Engine is equipped with a 12-pin FPC connector for the physical interface.

Block Diagram
A block diagram illustrating the components and connections of the MT82M Scan Engine is provided in the Integration Guide.

Electric Interface
The MT82M Scan Engine uses a 0.5-pitch 12-pin FPC connector for the electrical interface.

Pin Assignment
The pin assignment for the MT82M Scan Engine is as follows:

D-)
7| D+| Output| Bidirectional USB Differential Signal Transmission (USB
D+)
8| PWRDWN/WAKE| Input| Power Down: When high, the decoder is in low power mode
Wake: When low, the decoder is in operating mode
9| BPR| Output| Beeper: Low current beeper output
10| nDLED| Output| Decode LED: Low current decode LED output
11| NC| —| Reserved
12| nTRIG| Input| Trigger: Hardware triggering line. Driving this pin low causes
the scanner to start a scan and decode session

External Circuit Design
The Integration Guide provides circuit designs for driving an external LED for good read indication, an external beeper, and a trigger circuit for the scan engine.

Good Read LED Circuit
The nDLED signal from pin 10 of the 12-pin FPC connector is used to drive an external LED for good read indication.

Beeper Circuit

The BPR signal from pin 9 of the 12-pin FPC connector is used to drive an external beeper.

Trigger Circuit
The nTRIG signal from pin 12 of the 12-pin FPC connector is used to provide a signal to trigger a decode session.

Cable Drawing
A 12-pin FFC cable can be used to connect the MT82M Scan Engine to a host device. The cable design must be consistent with the specifications provided in the Integration Guide. It is recommendedto use reinforcement material for the connectors on the cable and reduce cable impedance for reliable connection and stable performance.

Product Usage Instructions

To integrate the MT82M Scan Engine into your device, follow these steps:

1. Review the block diagram provided in the Integration Guide to understand the components and connections of the MT82M Scan Engine.
2. Ensure you have a suitable 12-pin FFC cable that meets the specifications mentioned in the Integration Guide.
3. Connect the 12-pin FPC connector of the MT82M Scan Engine to the corresponding connector on your host device using the FFC cable.
4. If you want to utilize external indicators, such as an LED or a beeper, refer to the circuit designs provided in the Integration Guide and connect them accordingly.
5. If you need to trigger a scan and decode session, use the nTRIG signal from pin 12 of the 12-pin FPC connector. Drive this pin low to initiate the scanning process.

By following these instructions, you can successfully integrate and utilize the MT82M Scan Engine in your device.

INTRODUCTION

• MT82M One-piece Compact 2D Scan Engine provides snappy scanning performance at a competitive cost and compact form factor. With its all-in-one design, MT82M 2D scan engine can be easily integrated with specific applications such as access control, lottery kiosk and consumer electronics.
• The MT82M 2D Scan Engine consists of 1 illumination LED, 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.
• Multiple interfaces are available. UART interface communicates with the host system over UART 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

• The physical interface of MT82M consists of a 0.5-pitch 12-pin FPC connector. Below figure illustrates the position of the connector and pin1.

External Circuit Design

Good Read LED Circuit
The circuit below is used to driver an external LED for good read indication. The nDLED signal is from pin10 of the 12-pin FPC connector.

Beeper Circuit
The circuit below is used to driver external beeper. The BPR signal is from pin9 of the 12-pin FPC connector.

Trigger Circuit
The circuit below is used to provide the scan engine with a signal to trigger a decode session. The nTRIG signal is from pin12 of the 12-pin FPC connector.

Cable Drawing

FFC Cable (unit: mm)
A 12-pin FFC cable can be used to connect the MT82M to host device. The cable design must be consistent with the specifications shown below. Use reinforcement material for the connectors on the cable and reduce cable impedance for reliable connection and stable performance

SPECIFICATIONS

Introduction

• This chapter provides technical specifications of the MT82M. Operating method, scanning range and scan angle are also presented.

Technical Specifications

Optic & Performance

Light Source| White LED
Aiming| Visible red LED
Sensor| 1280 x 800 (Megapixel)

Resolution

| 3mil/ 0.075mm (1D)

7mil/ 0.175mm (2D)

Field of View

| Horizontal 46°

Vertical 29°

Scan Angle

| Pitch Angle ±60°

Skew Angle ±60°

Roll Angle 360°

Print Contrast Ratio| 20%

Typical Depth Of Field

(Environment: 800 lux)

| 5 Mil Code39: 40 ~ 222mm
13 Mil UPC/EAN: 42 ~ 442mm
15 Mil Code128: 41 ~ 464mm
15 Mil QR Code: 40 ~323mm
6.67 Mil PDF417: 38 ~ 232mm
10 Mil Data Matrix: 40 ~ 250mm
Physical Characteristics
Dimension| W21.6 x L16.1 x H11.9 mm
Weight| 3.7g
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| < 400mA
Standby Current| < 70mA
Low Power Current| 10 mA ± 5%
Connectivity

Interface

| UART
USB (HID Keyboard)
USB (Virtual COM)
User Environment
Operating Temperature| -10°C ~ 50°C
Storage Temperature| -40°C ~ 70°C
Humidity| 5% ~ 95%RH (Non-condensing)
Drop Durability| 1.5M
Ambient Light| 100,000 Lux (Sunlight)

1D Symbologies

| UPC-A / UPC-E EAN-8 / EAN-13

Code 128

Code 39

Code 93

Code 32

Code 11 Codabar Plessey MSI

Interleaved 2 of 5

IATA 2 of 5

Matrix 2 of 5

Straight 2 of 5 Pharmacode GS1 Databar

GS1 Databar Expanded GS1 Databar Limited

Composite Code-A/B/C

2D Symbologies

| QR Code

Micro QR Code Data Matrix

| PDF417

MicroPDF417 Aztec MaxiCode DotCode

---|---
Regulatory

ESD

| Functional after 4KV contact, 8KV air discharge

(It requires housing that is designed for ESD protection and stray from electric fields.)

EMC| TBA
Safety Approval| TBA
Environmental| WEEE, RoHS 2.0

Interface

UART Interface
When the scan engine is connected to the UART port of a host device, the scan engine will automatically enable UART communication.

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:

USB HID Interface
The transmission will be simulated as USB keyboard input. The Host receives keystrokes on the virtual keyboard. It works on a Plug and Play basis and no driver is required.

Interface Configuration Barcode: USB VCP Interface
If scanner is connected to the USB port on a host device, the USB VCP feature allows the host device to receive data in the way as a serial port does. A driver is needed when using this feature.

Interface Configuration Barcode:

Operation Method

1. At power-up, the MT82M sends the Power-Up signals over Buzzer and LED pins as an indication that the MT82M enters Standby Mode and is ready for operation.
2. Once the MT82M triggered by either hardware or software method, MT82M will emit a beam of light which is aligned with the sensor’s field of view.
3. 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 MT82M.
4. Upon a successful barcode decoded, the MT82M 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)

INSTALLATION

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.

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

Mechanical Dimension
When securing the scan engine by utilizing the machine screws:

1. Leave sufficient space to accommodate the maximum size of the scan engine.
2. Do not exceed 1kg-cm (0.86 lb-in) of torque when securing the scan engine to the host.
3. Use safe ESD practices when handling and mounting the scan engine.

Window Materials
Following are descriptions of three popular window materials:

1. Poly-methyl Methacrylic (PMMA)
   Allyl Diglycol Carbonate (ADC)

2. 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.

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 should be positioned properly to let the illumination and aiming beams pass through as much as possible and no reflections back into the engine. An improperly designed internal housing or improper selection of window material can degrade the engine’s performance.

The front of the engine housing to the furthest surface of the window should not exceed a+b (a ≦ 0.1mm, b ≦ 2mm).

Window Size
The window must not block the field of view and should be sized to accommodate the aiming and illumination envelopes shown below.

Window Care

In the aspect of window, the performance of MT82M will be reduced due to any kind of scratch. Thus, reducing the damage of window, there are few things have to be noticed.

1. Avoid touching the window as much as possible.
2. 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.

REGULATIONS

The MT82M scan engine conforms to the following regulations:

1. Electromagnetic Compliance – TBA
2. Electromagnetic Interference – TBA
3. Photobiological Safety – TBA
4. Environmental Regulations – RoHS 2.0, WEEE

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 MT82M 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)

PACKAGING

1. Tray (size: 24.7 x 13.7 x 2.7cm): Each tray contains 8pcs of MT82M.
2. Box (size: 25 x 14 x 3.3cm): Each Box contains 1pc of tray, or 8pcs of MT82M.
3. Carton (size: 30 x 27 x 28cm): Each Carton contains 16pcs of boxes, or 128pcs of MT82M.

VERSION HISTORY

0.2

| ****

2022.07.26

| Updated Schematic Example, Scan Rate,

Operating Temp.

| ****

Shaw

0.3| 2023.09.01| Updated Development Kit| Shaw

0.4

| ****

2023.10.03

| Revised RS232 to UART Removed Scan Rate

Updated Typical D.O.F, Dimension, Weight,

Working Current, Standby Current

| ****

Shaw

Marson Technology Co., Ltd.
9F., 108-3, Minquan Rd., Xindian Dist., New Taipei City, Taiwan
TEL: 886-2-2218-1633
FAX: 886-2-2218-6638
E-mail: info@marson.com.tw
Web: www.marson.com.tw

References

• Barcode Scanner & Scan Engine - Custom Manufacturer Marson

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