Marson MT84G Quick setup guide

MT84G 2D Mini Scan Engine, Integration Guide, V0.4
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MT T8 84 4G G
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2D D M Mi in ni i S Sc ca an n E En ng gi in ne e
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In nt te eg gr ra at ti io on n G Gu ui id de e
Version 0.4DATE: 2021/12/24

MT84G 2D Mini Scan Engine, Integration Guide, V0.4
TABLE OF CONTENTS
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1. . I IN NT TR RO OD DU UC CT TI IO ON N.........................................................................................1
1-1. Block Diagram .................................................................................1
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1- -2 2. . E El le ec ct tr ri ic c I In nt te er rf fa ac ce e..............................................................................2
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1- -2 2- -1 1. . P Pi in n A As ss si ig gn nm me en nt t.....................................................................2
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1- -2 2- -2 2. . E El le ec ct tr ri ic c C Ch ha ar ra ac ct te er ri is st ti ic cs s........................................................4
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1- -3 3. . O Op pe er ra at ti io on na al l T Ti im mi in ng g..........................................................................4
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1- -3 3- -1 1. . P Po ow we er r U Up p................................................................................4
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1- -3 3- -2 2. . S Sl le ee ep p M Mo od de e............................................................................4
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1- -3 3- -3 3. . D De ec co od de e T Ti im mi in ng g.......................................................................5
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1- -3 3- -4 4. . S Su um mm ma ar ry y o of f O Op pe er ra at ti io on n T Ti im mi in ng gs s...........................................5
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2. . S SP PE EC CI IF FI IC CA AT TI IO ON NS S.......................................................................................6
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2- -1 1. . I In nt tr ro od du uc ct ti io on n......................................................................................6
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2- -2 2. . T Te ec ch hn ni ic ca al l S Sp pe ec ci if fi ic ca at ti io on ns s.................................................................6
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2- -3 3. . C Co on nf fi ig gu ur ra at ti io on ns s.................................................................................8
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2- -4 4. . I In nt te er rf fa ac ce e............................................................................................9
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2- -4 4- -1 1. . U UA AR RT T I In nt te er rf fa ac ce e......................................................................9
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2- -4 4- -2 2. . U US SB B I In nt te er rf fa ac ce e.........................................................................9
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2- -4 4- -3 3. . U US SB B I In nt te er rf fa ac ce e.......................................................................10
2-4. Operation Method ..........................................................................10
2-4. Mechanical Dimension.................................................................. 11
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2- -5 5. . S Sc ca an nn ni in ng g R Ra an ng ge e............................................................................12
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2- -5 5- -1 1. . G Gu ua ar ra an nt te ee ed d S Sc ca an nn ni in ng g R Ra an ng ge e.............................................12
2-6. Pitch Angle, Roll Angle and Skew Angle .....................................13
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3. . I IN NS ST TA AL LL LA AT TI IO ON N.........................................................................................14
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3- -1 1. . E El le ec ct tr ro os st ta at ti ic c D Di is sc ch ha ar rg ge e C Ca au ut ti io on ns s.................................................14
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3- -2 2. . I In nt te eg gr ra at ti io on n a an nd d S So ol ld de er ri in ng g.............................................................15
3-3. Window Materials ..........................................................................16
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3- -4 4. . W Wi in nd do ow w S Sp pe ec ci if fi ic ca at ti io on ns s..................................................................17
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3- -5 5. . W Wi in nd do ow w C Ca ar re e..................................................................................19
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4. . R RE EG GU UL LA AT TI IO ON NS S.........................................................................................19
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5. . D DE EV VE EL LO OP PM ME EN NT T K KI IT T.................................................................................20
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6. . S SL LE EE EP P M MO OD DE E...........................................................................................21
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7. . P PA AR RA AM ME ET TE ER R S SE ET TU UP P................................................................................22
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8. . V VE ER RS SI IO ON N H HI IS ST TO OR RY Y..................................................................................23

MT84G 2D Mini Scan Engine, Integration Guide, V0.4
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1. . I IN NT TR RO OD DU UC CT TI IO ON N
The MT84G 2D Mini Barcode Scan Engine is the smallest 2D barcode scan engines
in the industry; it features middle range reading, high performance barcode scanning
with optimal performance and easy integration. MT84G is ideal for integration into
data terminals and small mobile devices with limited space.
The MT84G consists of 1 illumination LED, 1 aimer LED, a high-quality CMOS 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.
Three interfaces, UART, USB HID, USB VCP are available. UART interface
communicates with the host system over TTL-level RS232 communication; USB
interface emulates a USB keyboard device or virtual COM device and communicates
with the host system over USB.
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1- -1 1. . B Bl lo oc ck k D Di ia ag gr ra am m

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1- -2 2. . E El le ec ct tr ri ic c I In nt te er rf fa ac ce e
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1- -2 2- -1 1. . P Pi in n A As ss si ig gn nm me en nt t
(Front View) (Back View)
Pin# Definition I/O Description Schematic Example
1
Trigger Input High:
Power-up/Standby
Low:
Scanning Operation
(External pull-up
resistor 10K)
2
GND --- Ground
3
Buzzer Output Buzzer PWM output
BZ
2 1 1 2
220R Buzzer
NPN
VCC
Pin6
Pin1
Pin5
Pin10

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Pin# UART I/O Description Schematic Example
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Decode LED Output Decode LED output
LED1
GREEN
12
Q4
2N3904
R11
330R
R13 4K7
Decode LED
VCC
5
VCC --- 3.3V supply voltage
input
+3V3
6
UART RXD Input UART TTL data input
RS232 IC
Sipex® Vendor P/N: SP232ACT
7
UART TXD Output UART TTL data
output
8
USB_DM Input /
Output
USB Signal D-Differential Signal Transmission
9
USB_DP Input /
Output
USB Signal D+Differential Signal Transmission
10
GND --- Ground

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1- -2 2- -2 2. . E El le ec ct tr ri ic c C Ch ha ar ra ac ct te er ri is st ti ic cs s
Symbol
Ratings
Min
Max
Unit
VIH Input high level VDD x 0.7 --- V
VIL Input low level --- VDD x 0.3 V
VOH Output high level VDD - 0.3 --- V
VOL Output low level --- 0.4 V
*Note:
1. Power Supply:VDD=3.15 ± 0.15V
2. Exposure to maximum rating conditions for extended periods may affect device reliability.
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1- -3 3. . O Op pe er ra at ti io on na al l T Ti im mi in ng g
This chapter describes the timing associated with the various operating modes of
the MT84G including Power Up, Sleep Mode, and Decode Timing.
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1- -3 3- -1 1. . P Po ow we er r U Up p
When power is initially applied, the MT84G is activated and begins the
process of initialization. Once initialization (duration≧1000mS) is
completed, the MT84G emits power-up beeps, enters Standby Mode and
is ready for barcode scanning.
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1- -3 3- -2 2. . S Sl le ee ep p M Mo od de e
The MT84G will enter Sleep Mode after a programmable time period has
elapsed without any activity. Please see Chapter 6 for more details about
Sleep Mode.

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1- -3 3- -3 3. . D De ec co od de e T Ti im mi in ng g
In Standby Mode, the MT84G is activated by the Trigger signal which
MUST be kept low for at least 15mS until the successful scan is achieved,
as indicated by the Buzzer signal.
The total scan and decode time is approximately equal to the time from the
Trigger signal going low to the Buzzer signal going high. This time will vary
slightly based on several factors including barcode quality, barcode type
and the distance between MT84G and the barcode scanned.
Upon a successful scan, the MT84G outputs the Buzzer signal and keeps
this signal for the duration of the transmission of the data decoded to the
host side. The duration is about 80mS.
Therefore, the total duration of a typical scanning operation (from Trigger
turning low to the end of Buzzer PWM signal) is approximately 100mS.
In Sleep Mode, the MT84G can be waken up by the Trigger signal which
MUST be kept low for at least 15mS, to prompt the scan engine into
Standby Mode.
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1- -3 3- -4 4. . S Su um mm ma ar ry y o of f O Op pe er ra at ti io on n T Ti im mi in ng gs s
The minimum duration of initialization is 1000mS.
The minimum duration of valid Trigger signal is 15mS.
The minimum duration of waking up MT84G from Sleep Mode by Trigger
signal is also 15mS.
The minimum duration of scanning operation in Standby Mode is 100mS.
The minimum duration of waking up MT84G from Sleep Mode by Trigger
signal and completing decode is about 150ms.

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2. . S SP PE EC CI IF FI IC CA AT TI IO ON NS S
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2- -1 1. . I In nt tr ro od du uc ct ti io on n
This chapter provides technical specifications of the MT84G scan engine.
Operating method, scanning range and scan angle are also presented.
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2- -2 2. . T Te ec ch hn ni ic ca al l S Sp pe ec ci if fi ic ca at ti io on ns s
Optic & Performance
Light Source White LED
Red LED
Sensor 640 x 480 pixels
Scan Rate 30 Frames/ sec
Resolution 5mil/ 0.125mm (1D)
10mil/ 0.25mm (2D)
Scan Angle Horizontal 37°
Vertical 27.5°
Print Contrast Ratio 25%
Width of Field 141mm (13Mil Code39)
Guaranteed
Depth Of Field
(Environment: 800 lux)
5 mil Code39 55 ~ 115mm
13 mil UPC/ EAN 55 ~ 280mm
15 mil Code128 55 ~ 380mm
15 mil QR Code 40 ~ 200mm
10 mil Data Matrix
40 ~ 100mm
Physical Characteristics
Dimension W14 x L9.5 x H9.3 mm
W14 x L9.5 x H7.8 mm (when mounted on PCB)
Weight 1.2g
Color
Black
Material PC
Connector
Edge-board Contact x 10 pads
Electrical
Operation Voltage
3.15VDC±0.15VDC
Working Current < 156 mA
Standby Current
< 85 mA

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Idle Current (Sleep Mode)< 1.5 mA
Connectivity
Interface
UART (TTL-level RS232)
USB HID (HID Keyboard)
USB VCP (Virtual COM)
User Environment
Operating Temperature -20°C ~ 60°C
Storage Temperature -40°C ~ 70°C
Humidity 0% ~ 95%RH (Non-condensing)
Drop Durability 1.5M
Ambient Light 100,000 Lux (Sunlight)
1D Symbologies
UPC-A/ UPC-E0/ UPC-E1
EAN-8/ EAN-13
Code128
Code39
Code93
Codabar
Interleaved 2 of 5
Industrial 2 of 5
Matrix 2 of 5
Standard 2 of 5
China Post 25
Code11
MSI Plessey
Plessey
GS1 Databar
GS1 Databar Limited
GS1 Databar Expanded
2D Symbologies
QR Code
Micro QR Code
PDF417

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MicroPDF417
Data Matrix
Aztec
MaxiCode
Han Xin
Code16K
Regulatory
ESD
Functional after 4KV contact, 8KV a
ir discharge
(it requires housing that is designed for ESD
protection and stray from electric fields.)
EMC FCC – Part15 Subpart B (Class B)
CE – EN55032, EN55035
Safety Approval IEC 62471 (Exempt Group)
Environmental WEEE, RoHS 2.0
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2- -3 3. . C Co on nf fi ig gu ur ra at ti io on ns s
MT84G configurations include:
MT84G (P/N: 1084-A020000)
Standard Version, PCB Gold Finger x 10 pads
MT84G with interface board (P/N: 1084-A020001)
Demo Version, ZIF Connector x 12 pins, works with MB100 demo board. (see
Chapter 5 for details)