Newland EM3000 Specification

NLS-EM3000

OEM Scan Engine

Integration Guide

Version 1.0

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Version Description Date

Pre-release Initial release 26-08-2009

Version 1.0 Support as from EM3000 firmware Version 3.02.001 and higher. 11-03-2010

Revisions

Disclaimer

No part of this publication may be reproduced, transmitted, or used in any form or by any means, electrical or

mechanical, without prior written permission from Newland Auto-ID. The material in this manual is subject

to change without notice.

All software, including firmware, is provided strictly on an “as is” basis and is provided without further

warranty. Newland Auto-ID grants to the user a non-transferable and non-exclusive license to use each

software or firmware program delivered hereunder (licensed program). Except as noted below, such license

may not be assigned, sublicensed, or otherwise transferred by the user without prior written consent of

Newland Auto-ID. No right to copy a licensed program in whole or in part is granted except as permitted

under copyright law or as hereinafter expressly provided. The user agrees to maintain Newland Auto-ID’s

copyright notice on the licensed programs delivered hereunder, and to include the same on any authorized

copies it makes in whole or in part. The user agrees not to decompile, disassemble, decode, or reverse

engineer any licensed program or product delivered to the user or any portion thereof.

Newland Auto-ID reserves the right to make changes and improvements to any software or product for

reliability, function, or design.

Newland Auto-ID does not assume any responsibility or liability arising out of, or in connection with, the

application or use of any product, circuit, or application described herein.

No license is granted, either expressly or implicitly, estoppels, or otherwise under any Newland Auto-ID

intellectual property rights. An implied license only exists for equipment, circuits, and subsystems contained

in Newland Auto-ID products.

Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation. All other

product or service names are the property of their respective owners.

Newland Auto-ID Tech. Co., Ltd,

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Table of Contents

Content

About this guide

Introduction ................................................................................................................................................. 1

Chapter Description ..................................................................................................................................... 1

Graphic Notations ........................................................................................................................................ 1

Newland Auto-ID Support Center ............................................................................................................... 2

About EM3000

Introduction .................................................................................................................................................. 3

Highlights of the EM3000 ........................................................................................................................... 3

Get Familiar With EM3000 ......................................................................................................................... 4

Unpacking ............................................................................................................................................. 4

Outline of EM3000 ............................................................................................................................... 4

EM3000 Decode Zone ................................................................................................................................. 5

EM3000 Overall Specifications ................................................................................................................... 6

Mechanical Interface

Introduction .................................................................................................................................................. 7

Dimensions of EM3000 Unit ....................................................................................................................... 8

EM3000 Front View ............................................................................................................................. 8

EM3000 Right Side View .................................................................................................................... 8

EM3000 Bottom View ......................................................................................................................... 8

Interface(24PIN-12PIN) .............................................................................................................................. 9

Interface Socket .................................................................................................................................... 9

Interface Cable ...................................................................................................................................... 9

Interface Socket Pin Assignment and Definition ................................................................................ 10

12-Pins End of Flexible Cable Pin Assignment and Definitions .........................................................11

Schematic of Interface Socket ............................................................................................................ 12

Sample Interface Flexible Cable Specifications ................................................................................ 13

Interface(12PIN-12PIN) ............................................................................................................................ 14

Interface Socket .................................................................................................................................. 14

Interface Cable .................................................................................................................................... 14

Interface Socket Pin Assignment and Definition ................................................................................ 15

Schematic of Interface Socket ............................................................................................................ 16

Sample Interface Flexible Cable Specifications ................................................................................ 17

Housing Design Considerations ................................................................................................................. 18

Housing Structure ............................................................................................................................... 18

Scan Window ...................................................................................................................................... 18

Temperature ........................................................................................................................................ 18

Electrical Interface

Introduction ................................................................................................................................................ 19

The 24 Pin to 12 Pin Signal map ............................................................................................................... 20

Interface Signal levels ......................................................................................................................... 20

Input signals ............................................................................................................................................... 21

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Output Signals ............................................................................................................................................ 21

A Sample Schematic of Beeper Driving Circuit: ............................................................................... 22

A Sample Schematic of LED Driving Circuit: ................................................................................... 22

Software Interface

Introduction ................................................................................................................................................ 23

Trigger EM3000 for a Reading .................................................................................................................. 24

Hard Trigger ........................................................................................................................................ 24

Auto Scan ............................................................................................................................................ 24

Continuous Scan Mode ....................................................................................................................... 24

Serial Port Communication ....................................................................................................................... 25

EM3000 Initiated Data Upload ........................................................................................................... 25

Barcode Message ...................................................................................................................................... 26

Host Initiated Commands .......................................................................................................................... 27

Development Tools

Introduction ................................................................................................................................................ 31

Evaluation Kit, EVK3000&1300 ............................................................................................................... 32

QuickSet ..................................................................................................................................................... 33

Software Development Kit ........................................................................................................................ 34

Programming the Engine

Introduction ................................................................................................................................................ 35

Code Programming ............................................................................................................................. 35

Command Programming ..................................................................................................................... 35

QuickSet Programming ...................................................................................................................... 35

Programming Notation .............................................................................................................................. 36

Code Programming On/Off........................................................................................................................ 37

Illumination ................................................................................................................................................ 38

Aiming ....................................................................................................................................................... 39

Beep ........................................................................................................................................................... 40

Decoding Beep .................................................................................................................................... 40

Decoding Beep Type ........................................................................................................................... 40

Decoding Beep Volume ...................................................................................................................... 41

Power On Beep ................................................................................................................................... 41

Beep Denotation (Beeper Definitions) ............................................................................................... 41

Reading Mode ............................................................................................................................................ 42

Reading Timeout and Delay ...................................................................................................................... 43

Sensitivity .................................................................................................................................................. 44

Exposure Imaging Mode ............................................................................................................................ 45

Default ....................................................................................................................................................... 46

Factory Default ................................................................................................................................... 46

User Default ........................................................................................................................................ 46

Query Product Information ........................................................................................................................ 47

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RS232 Interface

Introduction ................................................................................................................................................ 48

Serial Port .................................................................................................................................................. 49

Baud Rate ............................................................................................................................................ 49

Parity Check ........................................................................................................................................ 50

Hardware Auto Flow Control（only for HR200） ......................................................................... 50

Data Bits Transmitted ......................................................................................................................... 51

Stop Bits .............................................................................................................................................. 51

Symbols

Introduction ............................................................................................................................................... 52

General Options ......................................................................................................................................... 53

Disable Reading All ............................................................................................................................ 53

Enable Reading All ............................................................................................................................. 53

Enable Reading All 1D ....................................................................................................................... 53

Disable Reading All 1D ...................................................................................................................... 53

Enable Reading All 2D ....................................................................................................................... 54

Disable Reading All 2D ...................................................................................................................... 54

Code 128 .................................................................................................................................................... 55

Load Factory Default .......................................................................................................................... 55

Enable/Disable Code 128 ................................................................................................................... 55

Select Message Length ....................................................................................................................... 56

EAN-8 ........................................................................................................................................................ 57

Load Factory Default .......................................................................................................................... 57

Enable/Disable UCC/EAN-8 .............................................................................................................. 57

Check Digit ......................................................................................................................................... 57

2 Digits Addenda Code ....................................................................................................................... 58

5 Digits Addenda Code ....................................................................................................................... 58

EAN-8 expand to EAN-13 .................................................................................................................. 59

EAN-13 ...................................................................................................................................................... 60

Load Factory Default .......................................................................................................................... 60

Disable/EnableEAN-13 ...................................................................................................................... 60

Check Digit ......................................................................................................................................... 60

2 Digits Addenda Code ....................................................................................................................... 61

5 Digits Addenda Code ....................................................................................................................... 61

UPC-E ........................................................................................................................................................ 62

Load Factory Default .......................................................................................................................... 62

Disable/Enable UPC-E ....................................................................................................................... 62

Check Digit ......................................................................................................................................... 62

2 Digits Addenda Code ....................................................................................................................... 63

5 Digits Addenda Code ....................................................................................................................... 63

Transmit Default “0” ..................................................................................................................... 64

UPC-E Expand to UPC-A ................................................................................................................... 64

UPC-A ........................................................................................................................................................ 65

Load Factory Default .......................................................................................................................... 65

Disable/Enable UPC-A ....................................................................................................................... 65

Check Digit ......................................................................................................................................... 65

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2 Digits Addenda Code ....................................................................................................................... 66

5 Digits Addenda Code ....................................................................................................................... 66

Transmit Default “0” ...................................................................................................................... 67

Interleaved 2 of 5 ....................................................................................................................................... 68

Load Factory Default .......................................................................................................................... 68

Disable/Enable Interleaved 2 of 5 ....................................................................................................... 68

Select Message Length ....................................................................................................................... 69

Check Digit ......................................................................................................................................... 70

Specified Lengths ............................................................................................................................... 71

ITF-14 ........................................................................................................................................................ 72

ITF-6 .......................................................................................................................................................... 73

Code 39 ...................................................................................................................................................... 74

Load Factory Default .......................................................................................................................... 74

Enable/Disable Code 39 ..................................................................................................................... 74

Transmit Start & Stop Character......................................................................................................... 74

Select Message Length ....................................................................................................................... 75

Check Digit ........................................................................................................................................ 76

Decode ASCII ..................................................................................................................................... 76

Codabar ...................................................................................................................................................... 77

Load Factory Default .......................................................................................................................... 77

Enable/Disable Codabar ..................................................................................................................... 77

Select Message Length ....................................................................................................................... 78

Check Digit ........................................................................................................................................ 79

Transmit Start & Stop Character......................................................................................................... 80

Code 93 ...................................................................................................................................................... 81

Load Factory Default .......................................................................................................................... 81

Enable /Disable Code 93 .................................................................................................................... 81

Select Message Length ....................................................................................................................... 82

Check Digit ........................................................................................................................................ 83

UCC/EAN-128 ........................................................................................................................................... 84

Load Factory Default .......................................................................................................................... 84

Enable/Disable UCC/EAN-128 .......................................................................................................... 84

GS1 Databar ............................................................................................................................................... 85

Load Factory Default .......................................................................................................................... 85

Enable/Disable GS1 Databar .............................................................................................................. 85

Transmit AI(01) Character .................................................................................................................. 85

EAN·UCC Composite ................................................................................................................................ 86

Load Factory Default .......................................................................................................................... 86

Enable/Disable EAN·UCC Composite ............................................................................................... 86

Code 11 ...................................................................................................................................................... 87

Load Factory Default .......................................................................................................................... 87

Enable/Disable Code 11 ...................................................................................................................... 87

Select Message Length ....................................................................................................................... 88

Check Digit ......................................................................................................................................... 89

ISBN .......................................................................................................................................................... 90

Load Factory Default .......................................................................................................................... 90

Enable/Disable ISBN .......................................................................................................................... 90

Transmit .............................................................................................................................................. 90

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Industrial 25 ............................................................................................................................................... 91

Load Factory Default .......................................................................................................................... 91

Enable/Disable Industrial 25 ............................................................................................................... 91

Select Message Length ....................................................................................................................... 92

Check Digit ......................................................................................................................................... 93

Standard 25 ................................................................................................................................................ 94

Load Factory Default .......................................................................................................................... 94

Enable/Disable Standard 25 ................................................................................................................ 94

Select Message Length ....................................................................................................................... 95

Check Digit ......................................................................................................................................... 96

Plessey ....................................................................................................................................................... 97

Load Factory Default .......................................................................................................................... 97

Enable/Disable Plessey ....................................................................................................................... 97

Select Message Length ....................................................................................................................... 98

Check Digit ......................................................................................................................................... 99

MSI-Plessey ............................................................................................................................................. 100

Load Factory Default ........................................................................................................................ 100

Enable/Disable MSI-Plessey ............................................................................................................ 100

Select Message Length ..................................................................................................................... 101

Check Digit ....................................................................................................................................... 102

PDF417 .................................................................................................................................................... 103

Load Factory Default ........................................................................................................................ 103

Enable/Disable PDF417 .................................................................................................................... 103

Select Message Length ..................................................................................................................... 104

PDF417 Twin Code........................................................................................................................... 105

Forward/Positive Direction PDF 417 .............................................................................................. 105

QR Code .................................................................................................................................................. 106

Load Factory Default ........................................................................................................................ 106

Enable/Disable QR Code .................................................................................................................. 106

Select Message Length ..................................................................................................................... 107

QR Twin Code .................................................................................................................................. 108

Aztec ........................................................................................................................................................ 109

Load Factory Default ........................................................................................................................ 109

Enable/Disable Aztec ........................................................................................................................ 109

Select Message Length ......................................................................................................................110

Reading Multi-barcodes of an Image.................................................................................................111

The number of Multi-barcodes ..........................................................................................................112

Data Matrix ...............................................................................................................................................11 3

Load Factory Default .........................................................................................................................113

Enable/Disable Data Matrix...............................................................................................................113

Select Message Length ......................................................................................................................114

Data Matrix Twin Code .....................................................................................................................115

Rectangular Symbols .........................................................................................................................11 6

Forward/Positive Direction Data Matrix ..........................................................................................116

Maxicode ..................................................................................................................................................117

Load Factory Default .........................................................................................................................117

Enable/Disable Maxicode ................................................................................................................117

Select Message Length ......................................................................................................................118

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OCR

Introduction ...............................................................................................................................................119

Prefix/Suffix

Introduction .............................................................................................................................................. 120

General Programming .............................................................................................................................. 121

Disable or Enable Prefix/Suffix ........................................................................................................ 121

Prefix Sequences ............................................................................................................................... 122

Disable or Enable User Prefix .......................................................................................................... 123

Program User Prefix ......................................................................................................................... 123

AIM Prefix ............................................................................................................................................... 124

Code ID Prefix ......................................................................................................................................... 125

Code ID Default ................................................................................................................................ 125

Modify Code ID ................................................................................................................................ 126

User Suffix ............................................................................................................................................... 129

Disable or Enable User Suffix .......................................................................................................... 129

Program User Suffix ......................................................................................................................... 129

Stop Suffix ............................................................................................................................................... 130

Disable or Enable Stop Suffix .......................................................................................................... 130

Program Stop Suffix ......................................................................................................................... 130

Message Interception & Pack

Introduction .............................................................................................................................................. 131

Message Interception ............................................................................................................................... 132

Programming 1D Intercept Option ................................................................................................... 133

Programming 2D Intercept Option ................................................................................................... 134

Message Pack ........................................................................................................................................... 135

Introduction ....................................................................................................................................... 135

Normal Pack ..................................................................................................................................... 135

Batch Programming

Introduction .............................................................................................................................................. 136

How to build a batch command ............................................................................................................... 137

Produce setting code ................................................................................................................................ 138

Use batch setting code ............................................................................................................................. 139

Appendix

Digit Code ................................................................................................................................................ 140

Save and Abort ......................................................................................................................................... 142

Factory Default List ................................................................................................................................. 143

AIM ID List ............................................................................................................................................. 148

Code ID List ............................................................................................................................................. 149

Symbols ID Number ................................................................................................................................ 150

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About this guide

Introduction

This NLS-EM3000 (“EM3000”) Scan Engine Integration Guide provides general instructions for OEM

integration.

Chapter Description

About EM3000: The chapter of About EM3000 gives a brief description of the EM3000. It covers the

general, overall specifications of the EM3000.

Mechanical Interface: The chapter of Mechanical Interface describes the mechanical interface of the

EM3000. It includes the dimensions and locations of EM3000 mechanical components.

Electrical Interface: The chapter of Electrical Interface describes the electrical interface of the EM3000. It

mainly explains the EM3000 interface socket and flexible cable. Samples of schematics are also included.

Software Interface: The chapter of Software Interface describes the software interface of EM3000. It has the

serial communication protocols for queries and commands.

Development Tools: The chapter of EM3000 Development Tools lists the development tools and brief

descriptions of the tools.

Programming The Engine:The chapter of Configuration lists all the configurations of EM3000. The

configuration can be done through pre-printed configuration barcodes, serial port commands, and/or

Quickset, a Newland software package.

Graphic Notations

Tool – Handy item for a task.

Attention – Important subject to be aware of or to avoid.

Tips – Helpful information about a topic or a feature.

Example – Illustration of how to use a feature.

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About this guide

Newland Auto-ID Support Center

If you have any problem with your equipment, contact the Newland Support Center in your region. Before

calling, have the model number, serial number, and several of your barcodes at hand.

Call the support Center from a phone near the scanning equipment so that the service person can try to talk

you through your problem. If the equipment is found to be working properly and the problem is barcode

readability, the Support Center will request samples of your bar codes for analysis at our plant.

If your problem cannot be solved over the phone, you may need to return your equipment for servicing. If

that is necessary, you will be given specific directions.

Note: Newland Auto-ID Tech. is not responsible for any damages incurred during shipment.

For service information, warranty information or technical assistance contact or call the Support Center listed

below. For the latest service information go to

http://www.nlscan.com

If you purchased your Newland product from a Newland Business Partner, contact that Business Partner for

Service.

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About EM3000About EM3000

Introduction

EM3000 is an embedded barcode reading engine. Its gray scale CMOS image capturer and the Newland

patented

TM

, a Computerized Image Recognition System, ensure the fast scanning and decoding accuracy

on different barcode media such as paper, plastic card, and metal surface. It can be easily integrated into

OEM equipments or systems (hand-held, portable, and mounted) to provide solutions for image capture,

barcode reading, and barcode message processing.

EM3000 opens its image acquisition interface and camera control to OEM developers to allow their special

integration needs. EM3000 Software Development Kit is provided for easy and quick development of OEM

applications.

Highlights of the EM3000

Slim size allowing easy embedding into OEM equipments and systems. »

Outstanding decoding performance for major 1D and 2D barcodes. »

High performance CPU and image capture module ensuring fast and accurate scans. »

Easy OEM software development and firmware upgrade. »

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About EM3000

Get Familiar With EM3000

Unpacking

Remove EM3000 and accessories from the package. Check for missing parts and inspect for damage.

EM3000 is packed in anti-static bag. Please handle accordingly.

Outline of EM3000

The outline of EM3000 is shown below. The picture above is of EM3000 V3.4, and the one below is of

EM3000 V6.

If there is any damage or missing parts, please contact your supplier at once. Keep the origi-

nal package for return services, if necessary.

Aiming LED

24 Pins Cable Socket

Camera

CMOS Circuit

L-Bracket

LED

Aiming LED

12 Pins Cable Socket

Camera

CMOS Circuit

L-Bracket

LED

EM3000 V3.4

EM3000 V6

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About EM3000

EM3000 Decode Zone

The view angle of the camera is 36°. Following figure shows the fields of the view at different distances.

36°

0 50 100 150 200 250

45mm Code39(10mil) 155mm

60mm Code39(15mil) 185mm

45mm PDF417(10mil) 160mm

45mm PDF417(15mil) 175mm

35mm Data Matrix(10mil） 130mm

50mm Data Matrix(15mil） 150mm

35mm QR Code(10mil） 125mm

50mm QR Code(15mil） 160mm

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About EM3000

EM3000 Overall Specifications

Image Capture Specifications

Image Sensor

CMOS, gray scale

Resolution 752 x 480 pixels

Barcode Scan Specifications

Symbols

2D

PDF417, QR Code(Model 1/2), DataMatrix(ECC200, ECC000, 050,

080, 100,140),Aztec, Maxicode, etc.

1D

Code128, EAN-13, EAN-8, Code39, UPC-A, UPC-E, Codabar,

Interleaved 2 of 5, ISBN, Code 93, UCC/EAN-128, GS1 Databar, etc

Precision ≥ 5mil

Depth of Scan Field

Code39(10mil):45mm-155mm; Code39(15mil):60mm-185mm

PDF417(10mil):45mm-160mm; PDF417(15mil):45mm-175mm;

Data Matrix(10mil):35mm-130mm; Data Matrix(15mil):50mm-150mm;

QR Code(10mil):35mm-125mm; QR Code(15mil):50mm-160mm;

Print Contrast Ratio ≥ 30%

Sensitivity**

Roll 360°@ 0°Pitch and 0° Skew

Yaw (skew) ±60°@ 0°Roll and 0° Pitch

Pitch ±55°@ 0°Roll and 0° Skew

Illumination Specifications

Light Source LED (622 nm - 628 nm)

Light Intensity 330 LUX (130 mm )

Electrical and Mechanical Specifications

Voltage V3.4：DC 3.3 +/- 0.3 V；V6：DC3.3 + 0.3V

Current

Max 350 mA

Working 300 mA

Idle 60 mA

Height 13.5 mm

Width 28 mm

Length 24.5 mm

Weight 18 g

Environment Specifications

Operating Temperature -5℃ - +45℃

Storage Temperature -40℃ - +60℃

Humidity 5% - 95% (non-condensing)

Ambient Illumination 0 ~ 100,000 LUX

Certificates

FCC Part15 Class B, CE EMC Class B

**Test Condition:

Code39: 4 Bytes ; Resolution = 10mil; W:N = 3:1 ; PCS = 1.0 ;

Barcode Height = 12mm; Distance = 100mm; T=23°C; Illumination= 200 LUX

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Introduction

Mechanical Interface

This section describes theMechanical Interface.

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Mechanical Interface

Dimensions of EM3000 Unit

EM3000 Front View

Following figure 1 shows the dimensions of EM3000. The figure EM3000 Front View has the width and

height dimensions. The height of the EM3000 is from the bottom of EM3000 to the top of highest component

on the topside.

28.0 ± 0.1

13.5 ± 0.1

24.0 ± 0.1

M2 machine screw

2mm mounting hole

11.5 ± 0.1

13.0 ± 0.1

2.0 ± 0.1

EM3000 Front ViewFigure 1.

EM3000 Right Side View

The figure 2 EM3000 Right Side View has the length dimensions.

24.5 ± 0.1

22.0 ± 0.1

EM3000 Right Side ViewFigure 2.

EM3000 Bottom View

The figure 3 EM3000 Bottom View has the mounting screw specifications. The mounting screw is M2, 2 mm

screw. The length of the screw into EM3000 must be less than 2.5 mm.

EM3000 Bottom View Figure 3.

Unit：mm

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Mechanical Interface

Interface(24PIN-12PIN)

Interface Socket

There are two versions of EM3000. One is EM3000 V3.4 which uses a 24-Pins flexible cable socket to

interface with external device (Host), such as EVK3000&1300&1300, the EM3000 Evaluation Kit. Figure

4 below shows the location and dimension of the socket. The other is EM3000 V6 which uses a 12-Pins

flexible cable socket. It will be decribed in this section.

4.56

1.80

7.02

19.38

Unit：mm

1.60

Interface Socket PositionFigure 4.

Interface Cable

A flexible cable is needed when using EM3000 V3.4. The 24-Pins plug connects to the EM3000 interface

socket. The other, 12-Pins end connects to external device. Figure 6 below shows how the sample cable is

connected to the interface socket.

Flexible Cable PlugFigure 5.

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Mechanical Interface

Interface(24PIN-12PIN)

Interface Socket Pin Assignment and Definition

Pin Function

Pin 1 No Connection

Pin 2 Power and Signal Ground

Pin 3 No Connection

Pin 4 Power and Signal Ground

Pin 5 No Connection

Pin 6 Power and Signal Ground

Pin 7 No Connection

Pin 8 Power and Signal Ground

Pin 9 No Connection

Pin 10 Power and Signal Ground

Pin 11 No Connection

Pin 12 No Connection

Pin 13 Power and Signal Ground

Pin 14 Power and Signal Ground

Pin 15 Trigger signal, pull low longer than 20ms to initiate reading

Pin 16 Serial data output, TTL

Pin 17 Serial data input, TTL

Pin 18 EM3000 Restart signal, pull low longer than 100 μs to restart

Pin 19 LED indicator output. If not sufficient current for LED, extra driving circuit is needed

Pin 20 Beeper output. If not sufficient current for beeper, extra driving circuit is needed

Pin 21 Power Pin, VDD：+3.3V

Pin 22 Power Pin, VDD：+3.3V

Pin 23 Power Pin, VDD：+3.3V

Pin 24 Power Pin, VDD：+3.3V

Edge Of EM3000

Pin 1Pin 12

Pin 13

Pin 24

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Mechanical Interface

Interface(24PIN-12PIN)

12-Pins End of Flexible Cable Pin Assignment and Definitions

Pin Function

Pin 12 Reserved，No Connection

Pin 11 Power Supply，VDD：3.3V

Pin 10 Ground

Pin 9 Serial input port, TTL level

Pin 8 Serial output port, TTL level

Pin 7 Reserved，No Connection

Pin 6 Reserved，No Connection

Pin 5 Reserved，No Connection

Pin 4 Beeper output. If not sufficient current for LED, extra driving circuit is needed

Pin 3 LED indicator output. If not sufficient current for bepper, extra driving circuit is needed

Pin 2 EM3000 Restart signal, pull low longer than 100 μs to restart

Pin 1 Trigger signal, pull low longer than 20ms to initiate reading

Pin 1

Pin 12

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