MARSON MT684 2D Scan Engine User Guide

: June 4, 2024
: MARSON

Table of Contents

MARSON MT684 2D Scan Engine
SPECIFICATIONS
MECHANICAL DIMENSIONS
ELECTRIC INTERFACE
Reference Circuit Design
OPERATIONAL TIMING
VERSION HISTORY
References
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MARSON MT684 2D Scan Engine

SPECIFICATIONS

Light Source	white LED
Sensor	640 x 480 pixels

Resolution

| 5mil/ 0.125mm (1D barcode)

10mil/ 0.25mm (2D barcode)

Field of View

| Horizontal 68°

Vertical 50°

Scan Angle

| Pitch Angle ±60°

Skew Angle ±60°

Roll Angle 360°

Print Contrast Ratio| 25%

Typical Depth of Field

| UPC/EAN 13Mil: 8 ~ 181mm Code 128 15Mil: 5 ~ 143mm

QR Code 15Mil: 2 ~ 119mm

Dimension| W61.5 x L65 x H30.7 mm

Connector

| Micro USB Port

12 pin ZIF (pitch=0.5mm) 9pin Wafer (pitch=1.0mm)

Operation Voltage

| 3.3VDC ± 5%

5V (USB)

Working Current| < 120 mA

Interface

| UART TTL USB HID

USB VCP

1D Symbologies

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

Code 128

Code 39 Codabar Interleaved 2 of 5

| Industrial 2 of 5

Matrix 2 of 5

Code 11 MSI Plessey

GS1 Databar

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2D Symbologies

| QR Code PDF417

Data Matrix

ESD

| Functional after 4KV contact, 8KV air discharge (requires housing that is designed for ESD

protection and stray from electric fields)

Environmental| WEEE, RoHS 2.0

MECHANICAL DIMENSIONS

(Unit = mm)

ELECTRIC INTERFACE

3-1. 12-pin ZIF Connector (Pitch 0.5mm, bottom contact)

Pin#	Signal	Description	I/O
1	NC	–	–
2	VCC	3.3V power supply	–
3	GND	Ground	–
4	RXD	TTL receive	I
5	TXD	TTL send	O
6	DN	USB D-	I
7	DP	USB D+	I
8	NC	–	–
9	BEEP	Good read buzzer indicator	O
10	DLED	Good read LED indicator	O
11	NC	–	–
12	TRIG	Trigger Input	I

Below is the drawing of FFC cable that connects to ZIF connector.

3-2. 9-pin Wafer Connector (Pitch 1.0mm)

Pin#	Signal	Description	I/O
1	TRIG	Trigger Input	I
2	DLED	Good read LED indicator	O
3	BEEP	Good read buzzer indicator	O
4	DP	USB D+	I
5	DN	USB D-	I
6	TXD	TTL send	O
7	RXD	TTL receive	I
8	GND	Ground	–
9	VCC	3.3V power supply	–

Reference Circuit Design

Reference design for external trigger (TRIG) driver circuit

Reference design for external buzzer (BEEP) driver circuit

Reference design for external LED (DLED) driver circuit

After a barcode is successfully read, both BEEP and DLED pin will send a high- level pulse.

OPERATIONAL TIMING

Power Up

When power is initially applied, the MT684 is activated and begins the process of initialization. Once initialization (duration≧1000mS) is completed, the MT684 emits power-up beeps, enters Standby Mode and is ready for barcode scanning.

Decode Timing

By default MT684 is in Continuous Mode, in which it takes at least 80mS for MT684 to complete a scanning operation (decode + data output + buzzer signal). When MT684 is configured in Trigger Mode, the Trigger signal must be kept low for at least 20mS to activate scanning. Therefore in Trigger Mode it takes at least 100mS for MT684 to complete a scanning operation (trigger signal + decode + data output + buzzer signal).

Summary of Operational Timings

The minimum duration of initialization is 1000mS.
In Continuous Mode (default), the minimum duration of scanning operation is 80mS.
In Trigger Mode, the minimum duration of valid Trigger signal is 20mS and minimum duration of scanning operation is 100mS

VERSION HISTORY

Rev.	Date	Description	Issued
0.1	2021.09.07	Preliminary Draft Release	Shaw
0.2	2021.09.22	Added Vertical Field of View Angle & Scan Rate	Shaw
0.3	2021.10.15	Updated Specifications Added Operational Timing	Shaw
0.4	2022.05.09	Updated Specifications	Shaw
0.5	2022.09.07	Removed Scan Rate	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