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
commitment on the part of Newland. Newland shall not be liable for technical or editorial errors or omissions contained
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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.