MARSON MT40 Linear Image Barcode Scan Engine Installation Guide

MT40 Linear Image Barcode Scan Engine, Integration Guide, V2.3

MT40 (3.3-5V Long Range Barcode Scan Engine)
MT4OW (3.3-5V Wide Angle Barcode Scan Engine)
Integration Guide

INTRODUCTION

The MT40 Linear Image Barcode Scan Engine is designed for 1D high performance barcode scanning with optimal performance and easy integration. MT40 is ideal for integration into data terminals and other small mobile devices. Wide-angle version (MT40W) is also available.
The MT40 consists of 2 illumination LEDs, a high-quality linear image sensor and 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 Keyboard device and communicates with the host system over USB.

1-1. MT 40 Block Diagram

1-2.. Electric Interface
1-2-1. Pin Assignment

Pin#| UART| USB| I/O| Description| Schematic Example
---|---|---|---|---|---
1| VCC| VCC| ————| Supply voltage input. Must always be connected to 3.3 or 5V power supply.|
2| RXD| ————| Input| UART TTL data input.|
3| Trigger| Trigger| Input| High: Power-up/Standby Low: Scanning Operation
*Warning:
1. Pull low at power-up will prompt the scan engine into firmware update mode.| Once trigger is pressed (pull low), scanning operation continues until a barcode is successfully decoded or the trigger is released (pull high). To proceed to the next scanning operation, release (pull high) first and press (pull low) the trigger again.
Pin#| UART| USB| I/O| Description| Schematic Example
---|---|---|---|---|---
4| Power Enable| Power Enable| Input| High: Scan Engine Off Low: Scan Engine On
*****Except:
1. During data transmission
2. Writing parameters to non-volatile memory.| ****

When Power Enable pin is pull high, scan engine will be shut down with power consumption of less than 1uA.

5| TXD| ————| Output| UART TTL data output.|
6| RTS| ————| Output| When handshaking is enabled, MT40 requests permission from host to transmit data on TXD line.|
7| GND| GND| ————| Power and signal ground.| **
8| ————| USB D+| Bidirectional| Differential Signal Transmission|
Pin#| UART| USB| I/O| Description| Schematic Example
---|---|---|---|---|---
9| LED| LED| Output| Active high, it indicates the status of Power-Up or a successful barcode decoded (Good Read).| **
10| CTS| ————| Input| When handshaking is enabled, host authorizes MT40 to transmit data on TXD line.| **
11| Buzzer| Buzzer| Output| Active high: Power-Up or a successful barcode decoded.
PWM controlled signal can be used to drive an external buzzer for a successful barcode decoded (Good Read).|
**
12| ————| USB D-| Bidirectional| Differential Signal Transmission|

1-2-2. Electric Characteristics

*Note:

1. Power Supply: VDD= 3.3 or 5 V
2. Exposure to maximum rating conditions for extended periods may affect device reliability.

1-2-3. Flex Cable

The flex cable is used to connect MT40 with the host side. There are 12 pins on both the engine (MT40) side and the host side. Please see Chapter 2-10 for more details of flex cable.

Flex cable
(P/N: 67XX-1009X12)

Pin#| Pin Assignment To Host
1| VCC
2| RXD
3| Trigger
4| Power Enable
5| TXD
6| RTS
7| GND
8| USB D+
9| LED
10| CTS
11| Buzzer
12| USB D-

*Note: Conforms to MARSON MT742(L)/MT752(L) pin assignment.

1-3. Operational Timing
This chapter describes the timing associated with the various operating modes of the MT40 including Power Up, Sleep Mode, and Decode Timing.
1-3-1. Power Up
When power is initially applied, the MT40 is activated and begins the process of initialization. Once initialization (duration =: 10mS) is completed, the MT40 enters Standby Mode and is ready for barcode scanning.
1-3-2. Sleep Mode
The MT40 may enter Sleep Mode after a programmable time period has elapsed without any activity. Please see Chapter 6 for more details about Sleep Mode.
1-3-3. Decode Timing
In Standby Mode, the MT40 is activated by the Trigger signal which MUST be kept low for at least 20 ms until the successful scan is achieved, as indicated by the Buzzer/LED signals.
In Sleep Mode, the MT40 can be waken up by the Trigger signal which MUST be kept low for at least 2 mS, which will prompt the scan engine into Standby Mode.
The total scan and decode time is approximately equal to the time from the Trigger signal going low to the Buzzer/LED signal going high. This time will vary slightly based on several factors including barcode quality, barcode type and the distance between MT40 and the barcode scanned.
Upon a successful scan, the MT40 outputs the Buzzer/LED signal and keeps this signal for the duration of the transmission of the data decoded to the host side. The duration is about 75 ms.

Therefore, the total duration of a typical scanning operation (from Trigger turning low to the end of Buzzer PWM signal) is also approximately 120mS.

1-3-4. Summary of Operation Timings

1. The maximum duration of initialization is 10mS.
2. The maximum duration of scanning operation in Standby Mode is 120mS.
3. The minimum duration of waking up MT40 from Sleep Mode by Trigger signal is about 2 ms.
4. The maximum duration of waking up MT40 from Sleep Mode by Trigger signal and completing decode (when barcode is within optimal focus) is about 120ms

SPECIFICATIONS

2-1. Introduction
This chapter provides technical specifications of the MT40 scan engine.
Operating method, scanning range and scan angle are also presented.
2-2. Technical Specifications

Optic & Performance

Light Source| 625nm visible red LED
Sensor| Linear Image Sensor
Scan Rate| 510 Scans/ sec (Smart Detection)
Resolution| MT40: 4mil/ 0.1mm ; MT40W: 3mil/ 0.075mm
Scan Angle| MT40: 40°; MT40W: 65°
Print Contrast Ratio| 30%
Width of Field (13Mil Code39)| MT40: 200mm; MT40W: 110mm
Typical Depth Of Field (Environment: 800 lux)| Code \ Model| MT40| MT40W
3 mil Code39| N/A| 28 ~ 70mm (13 digits)
4 mil Code39| 51 ~ 133mm (4 digits)| 19 ~ 89mm (4 digits)
5 mil Code39| 41 ~ 172mm (4 digits)| 15 ~ 110mm (4 digits)
10 mil Code39| 27 ~ 361mm (4 digits)| 13 ~ 213mm (4 digits)
15 mil Code39| 42 ~ 518mm (4 digits)| 22 ~ 295mm (4 digits)
13 mil UPC/ EAN| 37 ~ 388mm (13 digits)| 21 ~ 231mm (13 digits)
Guaranteed Depth Of Field (Environment: 800 lux)| 3 mil Code39| N/A| 40 ~ 65mm (13 digits)
4 mil Code39| 65 ~ 120mm (4 digits)| 30 ~ 75mm (4 digits)
5 mil Code39| 60 ~ 160mm (4 digits)| 30 ~ 95mm (4 digits)
10 mil Code39| 40 ~ 335mm (4 digits)| 25 ~ 155mm (4 digits)
15 mil Code39| 55 ~ 495mm (4 digits)| 35 ~ 195mm (4 digits)
13 mil UPC/ EAN| 50 ~ 375mm (13 digits)| 35 ~ 165mm (13 digits)
Physical Characteristics
Dimension| (W)32 x (L)24 x (H)11.6 mm
Weight| 8g
Color| Black
Material| ABS
Connector| 12pin (pitch = 0.5mm) ZIF
Cable| 12pin (pitch = 0.5mm) flex cable
---|---
Electrical
Operation Voltage| 3.3 ~ 5VDC ± 5%
Working Current| < 160 mA
Standby Current| < 80 mA
Idle/Sleep Current| < 8 mA    (see Chapter 6 for Sleep Mode)
Power Down Current| < 1 uA    (see Chapter 1-2-1 for Power Enable pin)
Surge Current| < 500 mA
Connectivity
Interface| UART (TTL-level RS232)
USB (HID Keyboard)
User Environment
Operating Temperature| -20°C ~ 60°C
Storage Temperature| -25°C ~ 60°C
Humidity| 0% ~ 95%RH (Non-condensing)
Drop Durability| 1.5M
Ambient Light| 100,000 Lux (Sunlight)
Symbologies| UPC-A/ UPC-E EAN-8/ EAN-13
Matrix 2 of 5
China Postal Code (Toshiba Code) Industrial 2 of 5
Interleaved 2 of 5
Standard 2 of 5 (IATA Code) Codabar
Code 11
Code 32
Standard Code 39 Full ASCII Code 39 Code 93
Code 128
EAN/ UCC 128 (GS1-128)
MSI/ UK Plessey Code Telepen Code
GS1 Databar
Regulatory
ESD| Functional after 4KV contact, 8KV air discharge (it requires housing that is designed for ESD protection and stray from electric fields.)
---|---
EMC| FCC – Part15 Subpart B (Class B)
CE – EN55022, EN55024
Safety Approval| IEC 62471 (Exempt Group)
Environmental| WEEE, RoHS 2.0

2-3. Interface
2-3-1. UART Interface

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

Characteristics:

1. Configurable by scanning configuration barcodes or Ez Utility’ (a PC-based software utility, available for download at www.marson.com.tw)
2. Supports both hardware and software triggers
3. Supports bi-directional communication (serial command)

Interface Configuration Barcode:

Scanning above barcode will set your MT40 to UART interface.

2-3-2. USB Interface
Characteristics:

1. Configurable by scanning configuration barcodes or Ez Utility® (a PC-based software utility, available for download at www.marson.com.tw)
2. Supports hardware trigger only
3. Emulates a USB Keyboard device

Interface Configuration Barcode:

Scanning above barcode will set your MT40 to USB HID interface.

2.4 Operation Method

1. At power-up, the MT40 sends the Power-Up signals over Buzzer and LED pins as an indication that the MT40 enters Standby Mode and is ready for operation.
2. Once the MT40 triggered by either hardware or software method, it will emit a narrow, horizontal slab of light which is aligned with the sensor’s field of view.
3. The linear image sensor captures the linear image of barcode and produces an analog waveform, which is sampled and analyzed by the decoder firmware running on the MT40.
4. Upon a successful barcode decoded, the MT40 turns off the illumination LEDs, sends the Good Read signals over Buzzer and LED pins and transmits the decoded data to the host.
5. The MT40 may enter Sleep Mode (Please see Chapter 6 for more details) after a period of inactivity in order to reduce power consumption.

2.5 Mechanical Dimension

(Unit = mm)

2-6. Scanning Range
2-6-1. Typical Scanning Range
Test Condition – MT40

Barcode Length: Code39 – 4 characters
EAN/UPC – 13 characters
Bar & Space Ratio: 1 to 2.5
Print Contrast Ratio: 0.9
Ambient Light: > 800 lux

Typical Minimum & Maximum Scan Distance of MT40

Typical Maximum Scan Width of MT40

Symbology| Resolution| Barcode Length| No. of Encoded Characters
---|---|---|---
Standard Code 39 (w/o checksum)| 13 Mil| 200 mm| 37 char.

Test Condition – MT40W
Barcode Length: Code39 3mil – 13 characters, Code39 4/5/10/15mil – 4 characters
EAN/UPC – 13 characters
Bar & Space Ratio: 1 to 2.5
Print Contrast Ratio: 0.9
Ambient Light: > 800 lux

Typical Minimum & Maximum Scan Distance of MT40W 

Typical Maximum Scan Width of MT40W

Symbology| Resolution| Barcode Length| No. of Encoded Characters
---|---|---|---
Standard Code 39 (w/o checksum)| 13 Mil| 110 mm| 19 char.

2-6-2. Guaranteed Scanning Range
Test Condition – MT40
Barcode Length: Code39 – 4 characters
EAN/UPC – 13 characters
Bar & Space Ratio: 1 to 2.5
Print Contrast Ratio: 0.9
Ambient Light: > 800 lux

Guaranteed Minimum & Maximum Scan Distance of MT40 

Guaranteed Maximum Scan Width of MT40

Symbology| Resolution| Barcode Length| No. of Encoded Characters
---|---|---|---
Standard Code 39 (w/o checksum)| 13 Mil| 200 mm| 37 char.

Test Condition – MT40W
Barcode Length: Code39 3mil – 13 characters, Code39 4/5/10/15mil – 4 characters
EAN/UPC – 13 characters
Bar & Space Ratio: 1 to 2.5
Print Contrast Ratio: 0.9
Ambient Light: > 800 lux

Guaranteed Minimum & Maximum Scan Distance of MT40W 

Guaranteed Maximum Scan Width of MT40W

Symbology| Resolution| Barcode Length| No. of Encoded Characters
---|---|---|---
Standard Code 39 (w/o checksum)| 13 Mil| 110 mm| 19 char.

2-7. Pitch Angle, Roll Angle and Skew Angle
Be aware of the tolerance for the pitch, roll and skew angle of bar code you are trying to scan.

2-8. Specular Dead Zone
Do not place the MT40 directly over the barcode. The light reflecting directly back into the MT40 from the barcode is known as specular reflection, which can make decoding difficult. The specular dead zone of MT40 is up to 5° depending on target distance and substrate glossiness.

2-9. Curvature Degree

2-10. Flex Cable Specification
The curvature degree of a scanned barcode is specified as below:

2-11. Screw Specification
Below is the drawing of M1.6×4 screws(P/N: 4210-1604X01) that come with MT40.

2-12. Connector Specification
Below is the drawing of 12-pin 0.5-pitch FPC Connector(P/N: 4109-0050X00) of MT40.

INSTALLATION

The MT40 scan engine is designed specifically for integration into customer’s housing for OEM applications. However, the MT40’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 MT40.
3-1. Electrostatic Discharge Cautions
All MT40s 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 MT40.
2. Mount the MT40 in a housing that is designed for ESD protection and stray electric fields.

3-2. Mechanical Dimension
When securing the MT40 by utilizing the machine screws:

1. Leave sufficient space to accommodate the maximum size of the MT40.
2. Do not exceed 1kg-cm (0.86 lb-in) of torque when securing the MT40 to the host.
3. Use safe ESD practices when handling and mounting the MT40.

3-3. Window Materials

Following are descriptions of three popular window materials:

1. Poly-methyl Methacrylic (PMMA)
2. Allyl Glycol Carbonate (ADC)
3. 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-39™ , 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.

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.

3-4. Window Specifications

Window Specifications for MT40 Integration

Distance| Tilt Angle (a)| Minimum Window Size
Horizontal (h)| Vertical (v)| Thickness (t)
0 mm (b)| 0| 0| 32 mm| 8 mm| < 1 mm
10 mm (c)| > +20°| < -20°| 40 mm| 11 mm
20 mm (c)| > +12°| < -12°| 45 mm| 13 mm
30 mm (c)| > +8°| < -8°| 50 mm| 15 mm
Window Specifications for MT40W Integration

Distance| Tilt Angle (a)| Minimum Window Size
Horizontal (h)| Vertical (v)| Thickness (t)
0 mm (b)| 0| 0| 32 mm| 8 mm| < 1 mm
10 mm (c)| > +20°| < -20°| 45 mm| 11 mm
20 mm (c)| > +12°| < -12°| 55 mm| 13 mm
30 mm (c)| > +8°| < -8°| 65 mm| 15 mm

The window size must increase as it is moved away from MT40 and should be sized to accommodate the field of view and illumination envelopes shown below:

The window size must increase as it is moved away from MT40W and should be sized to accommodate the field of view and illumination envelopes shown below:

3-5. Window Care
In the aspect of window, the performance of MT40 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
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 MT40 scan engine conforms to the following regulations:

1. Electromagnetic Compliance – CE EN55022, EN55024
2. Electromagnetic Interference – FCC Part15 Subpart B (Class B)
3. Photobiological Safety – IEC 62471 (Exempt Group)
4. Environmental Regulations – RoHS 0, WEEE

DEVELOPMENT KIT

MARSON MB100 Demo Kit (P/N: 11A0-9801A20) enables the development of products and systems using the MT40 on the MS Windows OS platform. Besides the Multi I/O board (P/N: 2006-1007X00), the MB100 Demo Kit provides the software and hardware tools required for testing the MT40 applications before integrating it into the host device. Please contact your sales representative for ordering information

MB100 Demo Kit Accessories
O: Supported
X : Not Supported

(P/N: 7090-1583A00)
Internal Y-cable| o| o| o
(P/N: 5300-1315X00)
Micro USB Cable| x| o| o
(P/N: 7005-9892A50)

Due to the advantage of its small size, MB100 Multi I/O board is also suitable for being installed inside the host system, as an interface board connecting MT40 to the host device

SLEEP MODE

The Sleep Mode is enabled by default. To configure the “Sleep Timeout”, or the period of inactivity before MT40 enters Sleep Mode, please follow below steps.
Method A – Configuration Barcode
Steps:

1. Scan SET MINUTE [.B030$] or SET SECOND [.B029$]
2. Scan two digit from the numeric barcode table below.
3. Scan SET MINUTE [.B030$] or SET SECOND [.B029$]

Notes:
Sleep Timeout – Min: 0 min & 1 sec, Max: 60 min & 59 sec (To disable Sleep Mode, simply set 0 min & 0 sec)

Method B – Serial Command

Sleep Timeout (0 min & 1 sec ~ 60 min & 59 sec), the period of inactivity before the scanner enters Sleep Mode.
To disable Sleep Mode , simply set Sleep Timeout** as 0 min & 0 sec.

Example:
Send {MT007W0,10} to MT40 in the case of 10 seconds Sleep Timeout. MT40 will return {MT007WOK} to Host if it is successfully configured.
Notes:

1. Curly braces “{ }” must be included at both ends of each command.
2. To wake up MT40 from Sleep Mode, send any command or pull low at Trigger pin.

PARAMETER SETUP

You can set up your MT40 using one of the following methods:

1. Barcode Configuration:
   Scan configuration barcodes from 1D Scan Engine User Manual, available for download at www.marson.com.tw

2. Serial Command:
   Send software commands from the host according to full list of software commands in Serial Commands Manual, which is available for download at www.marson.com.tw.

3. Software Application:
   Use PC-based software application, Ez Utility®, to connect and configure scan engine. It is also available for download at www.marson.com.tw

VERSION HISTORY

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

References

• Barcode Scanner & Scan Engine - Custom Manufacturer Marson

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