Newland NLS-EM2037 Series Use and care manual

NLS-EM2037 Series
Scan Engine
Integration Manual

Disclaimer
Fujian Newland Auto-ID Tech. Co., Ltd. (“Newland”) reserves the right to make changes in specifications and other
information contained in this document without prior notice, and the reader should in all cases consult Newland to
determine whether any such changes have been made. The information in this publication does not represent a
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© 1999-2012 Fujian Newland Auto-ID Tech. Co., Ltd. All rights reserved.
Other product names or marks mentioned in this document may be trademarks or registered trademarks of other
companies and are the property of their respective owners.
Web Address: www.nlscan.com
Version History
Revisions Description Date
Pre-Released Pre-released version. 2012-06-28

Table of Contents
About EM2037....................................................................................................................................................................... 1
Introduction................................................................................................................................................................................ 1
Main Features............................................................................................................................................................................. 1
Unpacking the Engine................................................................................................................................................................. 1
Outline ........................................................................................................................................................................................ 1
Electrical Specifications ......................................................................................................................................................... 2
Introduction................................................................................................................................................................................ 2
Host Interface Connector............................................................................................................................................................ 3
Host Interface Connector Pin Out........................................................................................................................................... 3
Host Interface Signal Descriptions .......................................................................................................................................... 3
DC Characteristics....................................................................................................................................................................... 4
Operating Voltage (T=23°C) .................................................................................................................................................... 4
Operating Current (VIN=3.3V, T=23°C) ................................................................................................................................... 4
DC Operating (VDD=3.3V, VSS=0V, T=23°C)............................................................................................................................4
Interface Circuit .......................................................................................................................................................................... 4
TTL Level 232 .......................................................................................................................................................................... 4
USB.......................................................................................................................................................................................... 5
Decode LED Circuit..................................................................................................................................................................5
Beeper Driving Circuit ............................................................................................................................................................. 6
Sleep LED Driving Circuit......................................................................................................................................................... 6
Trigger Circuit.......................................................................................................................................................................... 7
Host Interface External Circuit.................................................................................................................................................... 7
Interface Circuit for Decode LED............................................................................................................................................. 7
Interface Circuit for Beeper .................................................................................................................................................... 7
Interface Circuit for Sleep LED ................................................................................................................................................ 8
Interface Circuit for Trigger .................................................................................................................................................... 8
Interface Circuit for Sleep/Wake ............................................................................................................................................ 8
Mechanical Specifications...................................................................................................................................................... 9
Introduction................................................................................................................................................................................ 9
Features and Dimensions ........................................................................................................................................................... 9
Front View of the Engine ........................................................................................................................................................9
Right View of the Engine......................................................................................................................................................... 9

Bottom View of the Engine ................................................................................................................................................... 10
Top View of EM2037 EVK...................................................................................................................................................... 10
Imager Interface Connector...................................................................................................................................................... 11
Imager Connector and Decoder Board Imager Interface Connector....................................................................................11
Connector Mechanical .......................................................................................................................................................... 11
Imager Flex Circuit ................................................................................................................................................................ 11
Host Interface Connector.......................................................................................................................................................... 12
Connection between Flex Strip and Host Interface .............................................................................................................. 13
Host Interface Connector Dimensions.................................................................................................................................. 13
Host Flex Circuit .................................................................................................................................................................... 14
Design Proposal........................................................................................................................................................................ 14
Window .................................................................................................................................................................................... 14
Thermal Considerations............................................................................................................................................................ 14
Depth of Field ...................................................................................................................................................................... 15
Introduction.............................................................................................................................................................................. 15
Depth of Focus for RN............................................................................................................................................................... 15
Depth of Focus for RM.............................................................................................................................................................. 15
Depth of Focus for RF ............................................................................................................................................................... 15
Development Tools.............................................................................................................................................................. 16
Introduction.............................................................................................................................................................................. 16
EVK2037 ................................................................................................................................................................................... 16

1
About EM2037
Introduction
EM2037 is designed for OEM applications based on Newland`s image acquisition system. This high-performance decoded
image engine can easily be integrated into various devices such as kiosks, ticketing machines and PDA's. 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.
Main Features
Small size, easy for integration into various applications.
Support all 1D and 2D bar codes, as well as Chinese Sensible Code (Han Xin Code).
Fast and high-accuracy reading and decoding performance based on high-performance processor and decode board.
Easy for configuration and firmware upgrade.
Unpacking the Engine
After you open the shipping carton containing the engine, please check to make sure everything you ordered is present and also check
for damage during shipment. Report damage or short item immediately to your supplier. The shipping container is suggested to be
saved for later storage or shipping.
EM2037 is shipped in ESD safe packaging. Use care when handling the engine outside its packing. Be sure grounding wrist straps
and properly grounded work areas are used.
Outline
Below is the exterior appearance of EM2037 (with EVK).
EM2037 (with EVK)

2
Electrical Specifications
Introduction
The EM2037 Series are small decoded output engines that can read 1D and 2D bar codes and have image capture capabilities. The
EM2037 Image Engine is specifically designed for easy integration into most existing applications. The decoder module supports a
TTL level 232 interface which, in most cases, does not require any hardware modifications for integration. This module also supports
USB interface.
The following information is presented to assist you in integrating the EM2037 module into an OEM application.

3
Host Interface Connector
Host Interface Connector Pin Out
The interface connector is a CviLux Corporation 0.5mm vertical surface mount FFC/FPC connector.
PIN TTL level 232 I/O USB I/O
1 232INV I NC -
2 VIN - VIN -
3 GND - GND -
4 RXD I D- I/O
5 TXD O Reserved -
6 CTS I D+ I/O
7 RTS O Reserved -
8 PWRDWN O,od PWRDWN O,od
9 nBEEPER O,od nBEEPER O,od
10 nGoodRead O,od nGoodRead O,od
11 nWake I nWake I
12 nTrig I nTrig I
I=Input,O=Output,od=Open Drain
Host Interface Signal Descriptions
Warning: Do not connect a flex strip to the host interface connector when power is present on the flex strip. Damage to the
image could result.
TTL Level 232
Signal Description
232INV Reserved
VIN Power-Supply voltage input
GND Power-Supply and signal ground
RXD Input-TTL level 232 receive data
TXD Output-TTL level 232 transmit data
CTS Input-TTL level 232 clear to send signal
RTS Output-TTL level 232 request to send
PWRDWN Output-Open Drain; 10K Pull up; active high indicator that EM2037 is in power down mode.
nBEEPER Output – Open Drain; idle high signal that can be an active low DC or PWM controlled AC signal used to drive
anexternal beeper.
nGoodRead Output – Open Drain; active low signal for driving a low current Good Read LED circuit.
nWake Input, 100K Pull up – When in power down mode active low wake up signal to the EM2037.
nTrig 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.

4
USB
Signal Description
D- Input/Output with 22 Ohm series termination resistor; USB D- differential data signal.
D+ Input/Output with 22 Ohm series termination resistor; USB D+ differential data signal. A USB speed indication
resistor (menu selectable based on terminal ID) is also incorporated.
DC Characteristics
Operating Voltage (T=23°C)
Parameter Min Typ Max
VIN 3.2 5.0 5.5
Operating Current (VIN=3.3V, T=23°C)
Parameter Typ Unit
Max Working Current 450 mA
Average Working Current 330 mA
Idle Current 75 mA
Deep Sleep Current 900 uA
DC Operating (VDD=3.3V, VSS=0V, T=23°C)
Parameter Min Typ Max 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
Interface Circuit
EM2037 supports two kinds of interfaces, i.e. TTL Level 232 and USB. Users can select either one as per need.
TTL Level 232
This is the illustration of interface circuit based on TTL Level 232.

5
USB
This is the illustration of interface circuit based on USB.
Decode LED Circuit
Illustration for Decode LED Circuit is as below.
Here is the decode LED driving circuit. When a bar code is decoded, GPIO_LED pin will output high level signal and thus drives on
the LED.

6
Beeper Driving Circuit
The illustration for beeper driving circuit is as below. When EM2037 is powered on or decodes a bar code successfully, PWM signal
will be output on PWM_BUZ pin and thus drives the beeper to sound.
Sleep LED Driving Circuit
Illustration for sleep LED driving circuit is as below. When the engine is in sleeping mode, GPIO_PWD pin will output low level and
PWRDWN pin on FPC 12PIN interface will be in high level, indicating EM2037 is in sleeping mode.

7
Trigger Circuit
When the engine is in manual trigger mode, pull down the nTRIG pin will activate the engine to read.
Host Interface External Circuit
When using EM2037, please refer to the below circuits for connection.
Interface Circuit for Decode LED
nGoodRead signal is the LED for a good read, which should be connected to Resistance R4. The brightness of LED depends on the
resistance value of R4. Users can select a resistance value as per need.
T7
Volt_T
LED
D1
R4
1k
nGoodRead
SYS_5V
Interface Circuit for Beeper
nBEEPER signal is the beep for power on or good read. This pin should be connected to Resistance R5. Meanwhile a schottky diode
D2 should be connected to the other end of beeper so as to avoid back-emf rising from no work of beeper.

8
Interface Circuit for Sleep LED
PWRDWN signal is the sleep LED when the engine enters sleeping mode. When the engine is under work, PWRDWN outputs low
level and LED D3 will not light; when the engine enters sleeping mode, PWRDWN outputs high level and the LED D3 lights.
2N3904
Q8
R1 1K
PWRDWN
R3
1k
LED
D3
R2
10K
SYS_5V
Interface Circuit for Trigger
nTRIG signal is the trigger signal. Press S1 switch so that the engine will capture image and decode once.
T10
Volt_T
B3F-4000
S1
2 3
1 4
5 6
C3
100pF CBW1608/60R
L1
C4
100pF
nTrig
Interface Circuit for Sleep/Wake
nWAKE is a wake signal. Press S2 switch when EM2037 is in sleeping mode will make the engine back into work.
T11
Volt_T
B3F-4000
S2
23
14
C5
100pF CBW1608/60R
L2
C6
100pF
nWAKE

9
Mechanical Specifications
Introduction
This chapter describes the mechanical interface of the engine.
Features and Dimensions
Front View of the Engine
Unit : mm
Right View of the Engine
Unit : mm

10
Bottom View of the Engine
Unit : mm
Top View of EM2037 EVK
Unit : mm

11
Imager Interface Connector
EM2037 series (EM2037-RN, EM2037-RM and EM2037-RF) realize connection between Imager and Decoder Board through 23
PIN connector.
Imager Connector and Decoder Board Imager Interface Connector
Connector Mechanical
Imager Flex Circuit
The imager flex circuit is a custom component, there are two flex circuit options avaliable:one for bracketed and non-bracketed
application and a longer one for non-bracketed application only.
The 55.88mm flex strip,which is for non-bracketed applications only,is illustrated below.

12
Unit: mm
The 21.00mm flex strip, which is for bracketed applications only,is illustrated below.
Unit: mm
Host Interface Connector
The host interface connector is a CviLux Corporation CF20121V0R0-LF,12PIN 0.5mm pitch vertical surface mount FFC/FPC
connector.

13
Connection between Flex Strip and Host Interface
Host Interface Connector Dimensions
Unit: mm

14
Host Flex Circuit
The host interface flex should be compatible with a CviLux Corporation CF20121V0R0-LF style connector, the following is an
example of a flex circuit.
Unit: mm
Design Proposal
Space for EM2037 and flex strip should be taken into consideration during structure design so as to avoid any extrusion on
components of EM2037 or any damage on flex strip.
Window
The distance and the angle of the tilt should be such that the illumination light will not be reflected into lens
Thermal Considerations
In a continuous scanning or high use environment, the engine temperature can rise. When integrating the engine, please avoid
winding of heat insulation material on EM2037.

15
Depth of Field
Introduction
The depth of field is defined as the distance over which the EM2037 is able to resolve and decode a bar code symbol. This distance is
referenced from the end of the EM2037 lens tube. All depth of field data is verified at T = 23°C (73°F), Vin=5V, ambient light =
300lux.
Depth of Focus for RN
Code Size Near Distance(mm) Far Distance(mm)
CODE 39 5mil 36 140
UPCA 13mil 50 185
CODE 39 20mil 43 235
PDF417 6.67mil 25 130
Data Matrix 10mil 20 105
QR 20mil 30 190
Depth of Focus for RM
Code Size Near Distance (mm) Far Distance (mm)
CODE 39 5mil 65 180
UPCA 13mil 50 320
CODE 39 20mil 35 450
PDF417 6.67mil 48 185
Data Matrix 10mil 40 115
QR 20mil 32 300
Depth of Focus for RF
Code Size Near Distance(mm) Far Distance(mm)
CODE 39 5mil 105 250
UPCA 13mil 60 410
CODE 39 20mil 50 640
PDF417 6.67mil 100 210
Data Matrix 10mil 90 210
QR 20mil 42 395

16
Development Tools
Introduction
This section describes the development tools for EM2037.
EVK2037
Here is a brief introduction to EM2037 Evaluation Kit, EVK2037 (Size: 50mm*65mm). Below is the layout for EVK2037 circuit
board. The board contains beeper, Decode LED, Sleep LED, RS232 or USB Switch, 3.3V or 5V Switch, Trigger and Wake Button.
Meanwhile there are USB and RS232 interfaces for communication.