Newland EM2037 Series Use and care manual

EM2037 Series
Embedded 2D Barcode Scan Engine
Integration Manual

Disclaimer
© 2013 Fujian Newland Auto-ID Tech. Co., Ltd. All rights reserved.
Please read through the manual carefully before using the product and operate it according to the manual. It is advised that you
should keep this manual for future reference.
Do not disassemble the device or remove the seal label from the device. Otherwise, FuJian Newland Auto-ID Tech. Co., Ltd.
does not assume responsibility for the warranty or replacement.
All pictures in this manual are for reference only and actual product may differ. Regarding to the product modification and
update, FuJian Newland Auto-ID Tech. Co., Ltd. reserves the right to make changes to any software or product to improve
reliability, function, or design at any time without notice. Besides, the information contained herein is subject to change without
prior notice.
The products depicted in this manual may include software copyrighted by FuJian Newland Auto-ID Tech. Co., Ltd or a third
party. The user, corporation or individual, shall not duplicate, in whole or in part, distribute, modify, decompile, disassemble,
decode, reverse engineer, rent, transfer or sublicense such software without prior written consent from the copyright holders.
This manual is copyrighted. No part of this publication may be reproduced or used in any form without written permission from
Newland.
FuJian Newland Auto-ID Tech. Co., Ltd. reserves the right to make final interpretation of the statement above.
FuJian Newland Auto-ID Tech. Co., Ltd.
3F, Building A, No.1, Rujiang Xi Rd., Mawei, Fuzhou, Fujian, P.R. China. 350015.
http://www.nlscan.com
Revision History
Version
Description
Date
V1.0.0
Initial release.
December 28, 2012
V1.0.1
Updates: Corrected inappropriate expressions and misspellings
January 17, 2013

Table of Contents
Chapter 1 Introduction.................................................................................................................................................................1
About EM2037..................................................................................................................................................................1
Documents.......................................................................................................................................................................1
Aimer................................................................................................................................................................................1
Illumination.......................................................................................................................................................................1
Chapter 2 Installation...................................................................................................................................................................2
General Requirements .....................................................................................................................................................2
ESD Precautions......................................................................................................................................................2
Dust and Dirt............................................................................................................................................................2
Environment.............................................................................................................................................................2
Thermal Consideration.............................................................................................................................................2
Installation Orientation .............................................................................................................................................2
Optics...............................................................................................................................................................................3
Window Placement..................................................................................................................................................3
Window Material and Color......................................................................................................................................3
Abrasion-resistant and Coating................................................................................................................................4
Window Size............................................................................................................................................................4
Ambient Light...........................................................................................................................................................6
Eye Safety................................................................................................................................................................6
Mounting...........................................................................................................................................................................6
Mechanical Mounting Dimensions for Combined Type (Unit: mm)...........................................................................7
Mechanical Mounting Dimensions for Imager (Unit: mm) ........................................................................................8
Mechanical Mounting Dimensions for Decoder Board (Unit: mm)............................................................................9
Chapter 3 Electrical....................................................................................................................................................................11
Power Supply................................................................................................................................................................. 11
Ripple Noise................................................................................................................................................................... 11
DC Characteristics ......................................................................................................................................................... 11
Operating Voltage (T=23°C)...................................................................................................................................11
I/O Requirements...................................................................................................................................................11
Chapter 4 Interfaces...................................................................................................................................................................12
Interface Definition .........................................................................................................................................................12
TTL-232 .................................................................................................................................................................12
USB .......................................................................................................................................................................13
Micro USB..............................................................................................................................................................14
Connector.......................................................................................................................................................................14
12 PIN-FPC............................................................................................................................................................14

Micro USB..............................................................................................................................................................15
External Circuit...............................................................................................................................................................15
LED Circuit for Good Read ....................................................................................................................................15
Circuit for Beeper...................................................................................................................................................16
Circuit for Sleep Mode LED....................................................................................................................................16
Circuit for Activating the Engine.............................................................................................................................17
Circuit for Trigger ...................................................................................................................................................17
Chapter 5 Development Tools...................................................................................................................................................19
EVK................................................................................................................................................................................19
QuickSet / uExpress.......................................................................................................................................................19

1
Chapter 1 Introduction
About EM2037
TM
EM2037 is an embedded 2D Barcode Scan Engine with CMOS technology and Newland`s . It can
read barcodes on various carriers like paper and magnetic cards and is suitable to be integrated into
various OEM devices including handheld scanners, PDA, kiosks, etc.
The image acquisition interface, initial data interface as well as I/O interface are available for users,
which enables users to easily realize second development via Newland`s SDK.
Documents
Documents related to EM2037 include:
NLS-EM2037 series Embedded 2D Barcode Scan Engine
Integration Manual:
Describe how to integrate EM2037
NLS-EM2037 series Embedded 2D Barcode Scan Engine
User Guide:
Explain how to use and program
EM2037
Sample Barcodes:
Sample barcodes for test
Aimer
EM2037 provides a view finder that projects an aiming beam to help the user center the target barcode
and improve efficiency. The aimer can be programmed on and off, but it is suggested to be turned on
during scanning.
Illumination
EM2037 has two red LEDs for supplementary illumination so as to enable the engine to scan barcodes
even in complete darkness. The illumination can be programmed on and off.
Since the illumination is red light and the lens imaging system is coated byAR film which has obvious
anti-reflection effect against red light, the engine shows better reading performance on non-red barcdes.
For applications with red barcodes, it is suggested to adopt supplementary illumination lights of other
colors.

2
Chapter 2 Installation
General Requirements
ESD Precautions
ESD has been taken into consideration during the design of EM2037 and the engine is shipped in ESD
safe packaging. Use care when handling the engine outside its package. Be sure grounding wrist straps
and properly grounded work areas are used.
Dust and Dirt
EM2037must be sufficiently enclosed to prevent dust particles from gathering on the imager and lens.
Dust and other external contaminants will eventually degrade the engine`s performance.
Environment
Good operation of EM2037 requires environment to meet below standards:
Working Temperature
-20°C to 55°C
Storage Temperature
-40°C to 80°C
Humidity
5% ~95% (non-condensing)
Thermal Consideration
Care must be taken when designing the engine into any system. High-power components (like CPU, CIS,
LEDs and PMIC) on EM2037 may cause internal heating in high duty cycle scanning applications. In a
continuous scanning or high use circumstances, the engine sectional temperature can rise to 30°C .
When the ambient temperature is high, the image noise level may be increased and the image quality
may be degraded.
Methods below are suggested so as to reduce power consumption and heating:
Avoid long term use of LEDs in continuous mode
Reserve space for air convection during design.
Avoid wrapping EM2037 with heat insulation materials like rubber.
Installation Orientation
Figure 2-1 illustrates the proper position and front view for installation of EM2037.

3
Figure 2-1
Optics
Window Placement
The window functions as an isolation wall in front of EM2037 to separate the engine from other parts of
the entire device. Meanwhile the window placement should ensure that the illumination and aiming
beams can come out and no reflection into the engine, otherwise the reading performance might be
affected.
The window should be mounted close to the front of the engine (parallel, no tilt). The maximum distance
is measured from the front of the engine housing to the farthest surface of the window.Avoid reflection of
illumination beams back to the engine and adopt thin material for window so as to reach better reading
performance. As shown below, the maximum distance should be no more than 3mm and the distance
from the front of the engine housing to the nearest surface of the window should be no more than 2mm.
Figure 2-2
If the window is required to be placed tilt, the distance should meet the same requirements as placed
parallel and the tilt angle should ensure no reflection back into the lens.
Window Material and Color
The wave-length of illumination and aiming beams should be taken into consideration when choosing
window material and color, so as to realize the possible highest transmission rate. The window should be

4
clear and has even refraction. It is suggested to use PMMA or optical glass with transmission rate over
90% and vagueness rate less than 1%. Whether coated or not depends on materials and application
demands.
Abrasion-resistant and Coating
Scratch on window will severely reduce the reading performance. It is suggested to use high-abrasion
window material or use abrasion-resistant coating to prevent scratch and abrasion.
Window Size
The primary requirement for window design is to ensure the window will not obstruct the field of view.
Based on that, the less obstruction on illumination envelope the better. Window size diagrams are shown
below for design reference.
Window Size Diagram
Figure 2-3 Crosswise Section

5
Figure 2-4 Longitudinal Section
Optical Diagram of 37.5°Lens
Figure 2-5 Crosswise Section
Figure 2-6 Longitudinal Section
Optical Diagram of 42°Lens

6
Figure 2-7 Crosswise Section
Figure 2-8 Longitudinal Section
Ambient Light
EM2037 might show better performance with ambient light. For high-frequency impulse light, however,
the reading might be interfered.
Eye Safety
EM2037 adopts LEDs instead of laser for aiming and illumination. Such LEDs are safe to eyes in normal
circumstances. However, direct look in the eye of such LEDs should be avoided during use.
Mounting
The structure of EM2037 supports two kinds of integration, i.e. combined type and discrete type. For the
combined type, the decoder board and the imager are originally fixed as a whole on an L shape bracket
and thus the user can just mount the whole bracket on the target device. The combined type is easy for
integration and is suitable for devices with enough space inside. For discrete type, the decoder board
and the imager are separately mounted and are connected by flexible flat cable. The discrete type is
more flexible for integration and suits devices with smaller space inside.

7
When integrating the engine, the mechanical specifications below should be taken into consideration.
The structure should be designed with enough space so that the engine will not be oppressed by other
components. And sufficient space should be kept for the location of flexible flat cable.
Mechanical Mounting Dimensions for Combined Type (Unit: mm)
Front View
Figure 2-9
Bottom View
Figure 2-10
Top View

8
Figure 2-11
Mechanical Mounting Dimensions for Imager (Unit: mm)
Front View
Figure 2-12
Bottom View
Figure 2-13
Top View

9
Figure 2-14
Right View
Figure 2-15
Mechanical Mounting Dimensions for Decoder Board (Unit: mm)
Front View
Figure 2-16
Back View

10
Figure 2-17
Right View
Figure 2-18

11
Chapter 3 Electrical
Power Supply
Do not input power until the engine is connected properly, otherwise the components inside the engine
might be damaged. Be sure the power is cut off before connecting or disconnecting the flexible flat cable.
Unstable power supply or sharp voltage drop might make the engine under unstable state. Wait at least
for 2s before supplying power again.
Ripple Noise
The ripple noise of power supply should be within 50mV (peak-to-peak), and 50mV is the limit.
DC Characteristics
Operating Voltage (T=23°C )
Parameter
Symbol
Minimum
Typical
Maximum
Unit
Operating Voltage
VIN
（TTL232）
3.3
5.0
5.5
V
VIN（USB）
4.5
5.0
5.5
V
Operating Current
(@ 5.0V)
Operating
Current
-
330
-
mA
Idle Current
-
60
-
mA
Low Power
-
1.2
-
mA
I/O Requirements
VDD=3.3V, VSS=0V, T=23°C
Parameter
Minimum
Maximum
Unit
VIL
VSS-0.1
VDD*0.2
V
VIH
VDD*0.8
VDD+0.1
V
VOL
VSS
VSS+0.3
V
VOH
VDD-0.3
VDD
V

12
Chapter 4 Interfaces
Interface Definition
The interface of EM2037 consists of 12 PIN-FPC and Micro USB:
12 PIN-FPC can either be TTL232 or USB form.
Note: One product model supports either TTL-232 or USB form.
Micro USB can only be used as standard USB interface.
The location of 12 PIN-FPC connector and Micro USB connector are marked in below illustation.
For detailed signal definition of 12 PIN-FPC, please refer to the following sections about TTL232 and
USB interfaces.
Figure 4-1
TTL-232
When 12 PIN-FPC is set for TTL232 interface, the definitions for 12 PINs are as below:
PIN#
Signal
I/O
Description
1
Reserved
-
Reserved
2
VIN
-
Power-supply voltage input
3
GND
-
Power-supply and signal ground
4
RXD
I
Input-TTL level 232 receive data

13
5
TXD
O
Output-TTL level 232 transmit data
6
nCTS
I
Input-TTL level 232 clear to send signal
7
nRTS
O
Output-TTL level 232 request to send signal
8
PWRDWN
O
Output-Open Drain; 10K Pull up; active high indicator that
EM2037 is in power down mode.
9
nBEEPER
O,od
Output –Open Drain; idle high signal that can be an active low
DC or PWM controlled AC signal used to drive an external
beeper.
10
nGoodRead
O,od
Output –Open Drain; active low signal for driving a low current
Good Read LED circuit.
11
nWAKE
I,
Input, 100K Pull up –When in power down mode active low
wake up signal to the EM2037.
12
nTRIG
I
Input, Weak Pull up –signal can be used a trigger input to the
EM2037 to indicate trigger depressed and when programmed
for host notify mode.
I = Input; O = Output; od = Open Drain;
USB
When 12 PIN-FPC is set for USB interface, the definitions for 12 PINs are as below:
PIN#
Signal
I/O
Description
1
Reserved
-
Reserved
2
VIN
-
Power-Supply voltage input
3
GND
-
Power-Supply and signal ground
4
D-
I/O
USB D-signal
5
Reserved
O
Reserved
6
D+
I/O
USB D+signal
7
Reserved
O
Reserved
8
PWRDWN
O
Output-Open Drain; 10K Pull up; active high indicator that
EM2037 is in power down mode.
9
nBEEPER
O,od
Output –Open Drain; idle high signal that can be an active

14
low DC or PWM controlledAC signal used to drive an
external beeper.
10
nGoodRead
O,od
Output –Open Drain; active low signal for driving a low
current Good Read LED circuit.
11
nWAKE
I
Input, 100K Pull up –When in power down mode active low
wake up signal to the EM2037.
12
nTRIG
I
Input, Weak Pull up –signal can be used a trigger input to the
EM2037 to indicate trigger depressed and when programmed
for host notify mode.
I = Input; O = Output; od = Open Drain;
Micro USB
The signal definitions of USB interface on Micro USB connector conform to the standard definitions.
Connector
There are 12 PIN-FPC connector and Mirco USB connector on EM2037.
12 PIN-FPC
12 PIN-FPC connector is a CviLux Corporation FFC/FPC connector(Model No.:CF20121V0R0-LF).

15
Figure 4-2
Micro USB
Micro USB connector is a connector with standard definitions and can be used as stanard methods.
Figure 4-3
External Circuit
LED Circuit for Good Read
The illustration below shows the circuit of LED reminder for good read. The left part of Figure 4-5 is the
driver circuit on EM2037 decoder board. The right part of Figure 4-5 is provided for design reference.
nGoodRead signal comes from PIN10 of 12 PIN-FPC.

16
Figure 4-5
Circuit for Beeper
The illustration below shows the circuit of Beeper. The left part of Figure 4-6 is the driver circuit on
EM2037 decoder board. The right part of Figure 4-6 is provided for design reference. nBEEPER signal
comes from PIN9 of 12 PIN-FPC.
Figure 4-6
Circuit for Sleep Mode LED
The illustration below shows the circuit of External LED for indicating sleep mode. The left part of Figure
4-7 is the driver circuit on EM2037 decoder board. The right part of Figure 4-7 is provided for design
reference. PWRDWN signal comes from PIN8 of 12 PIN-FPC.
The host terminal can adjust the external circuit and its functions as per actual needs, but the external
circuit should match the circuit of the decorder board.
Driver Circuit inside Mainboard
Suggested External Driver Circuit
Driver Circuit inside Mainboard
Suggested External Driver Circuit