David-Link DL=A User Manual

DL-A Biometric Access Control System

USER'S MANUAL

Table of Contents

1. General Information ......................................................................................................... 1

1.0 Notification .................................................................................................................... 2

1.1 System Overview ........................................................................................................... 2

1.2 Main Features ................................................................................................................ 2

2. Basic Concepts ................................................................................................................. 4

2.1 Basic Concepts ............................................................................................................... 4

2.1.1 User Enrollment ................................................................................................... 4

2.1.2 User Verification .................................................................................................. 4

2.1.3 Match Threshold Levels ....................................................................................... 4

2.1.4 User ID Number ................................................................................................... 5

2.1.5 Authority (Status) Levels ...................................................................................... 5

2.1.6 Start-up ................................................................................................................ 5

2.2 How to Place the Finger ................................................................................................ 6

2.2.1 More Tips for Fingerprint Record ........................................................................ 7

3. Enrollment and Verification Procedures ........................................................................... 8

3.1 Enrolling User ................................................................................................................ 8

3.1.1 Types of Enrollment ............................................................................................. 9

3.1.2 Fingerprint & Password ..................................................................................... 11

3.2 Testing an Enrollment ................................................................................................. 12

3.3 Backup Enrollment ...................................................................................................... 12

4. System Options ............................................................................................................. 13

4.1 System Options ........................................................................................................... 13

4.1.1 Date Time ........................................................................................................... 13

4.1.2 Language ............................................................................................................ 13

4.1.3 Format ................................................................................................................ 13

4.1.4 Advanced Options .............................................................................................. 14

4.2 Log Options ................................................................................................................. 15

4.3 Communication Options ............................................................................................. 15

4.4 Access Control ............................................................................................................. 16

4.4.1 Access Control Setting ...................................................................................... 16

4.4.2 Access Control Function .................................................................................... 17

4.4.3 Time Period Definition ...................................................................................... 17

4.4.4 Grouping Function ............................................................................................ 18

4.4.5 User Access Control Setup ................................................................................ 20

4.4.6 Lock Delay ......................................................................................................... 20

5. System Information ....................................................................................................... 21

6. Specification .................................................................................................................. 22

CAUTION:

Changes or modifications not expressly approved by the party responsible for compliance could
void the user's authority to operate the equipment.

1. General Information

1

2

3

M

4

5

6

7

8

9

0

OK

C

LCD Display

Keypad

Fingerprint Sensor

Proximity Sensor

This chapter explains the outlook of David-Link Biometric/Fingerprint Door Access Control
Terminal and its basic functions in details.

External Overview

Keypad Function

▲
▼

OK: Press to confirm your settings and/or present operation

M: Press to enter the menu options. Admin/manager’s fingerprint authentication, if any, will

be required

C: Press to exit the menu options and/or cancel present operation

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: Press to scroll up/down the menu

: Press to turn on/off the power

Number: Press number 0---9 to select or input

David-Link Door Access Control Terminal is a simple, easy-to-use terminal. It can be installed at

any area where access of the entries requires authority. This terminal combines the latest

fingerprint recognition technology with multiple levels of security control to provide the safest

environment.

1.0 Notification

Do not attempt to service the terminal yourself. Opening the terminal will void your 1- year
manufacturer’s limited warranty. Always follow the instructions in this user’s manual.

1. Do not place the terminal in direct sunlight. Bright light may significantly affect

fingerprint reads. The terminal is designed for indoor use within a temperature range

of 32-110ºF (0-43ºC). Keep the terminal away from heat sources.

2. This terminal is intended to be used as Door Access Control System. Do not use this terminal

for other purposes. The terminal warranty does not cover defects or damages arising from

improper installation, improper storage, abuse, ordinary wear-and-tear or unauthorized

service.

3. Please save your data and records in USB thumb drive or in your computer periodically.

David-Link is not responsible for any lost data and records from the terminal and software.

1.1 System Overview

DL-A is a Door Access Control System designed for any size of office environment with up to

3,000 authorized users. The system verifies user’s identity based on individual matching

fingerprint.

1.2 Main Features

• Identification Method: Fingerprint, RFID Card, Password, Fingerprint + Password, or

Fingerprint + RFID Card

• Identification Speed: ≤ 1 second

• Fingerprint Capacity: 3,000

• Management Record Capacity: 1,000

• Storage Capacity: 60,000

• Verification Mode: 1:1 and 1:N

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• FRR: ≤ 1%

• FAR: ≤ 0.0001%

• Communication: TCP/IP, RS485, USB

• USB Thumb Drive Download Function

• Lock Output: NO/NC

• Access Control Interface: Wiegand 26/34

• DC/Current: 12V/1A

2. Basic concepts

2.1 Basic concepts

This section contains definitions and descriptions of David-Link Biometric Fingerprint Access Control
concepts including:

• User Enrollment

• User Verification

• Match Threshold Levels

• User ID Numbers

• Authority (Status) Levels

2.1.1 User Enrollment

During user verification, live fingerprint scan is compared with the matching stored fingerprint

template to confirm user’s identity. Each enrollment process takes less than 1 second. All ten

fingers can be enrolled and assigned to the same ID number or the same user.

Ideally, one finger from each hand should be enrolled so that in case one finger is injured, the

alternate finger can still be verified. It is recommended to enroll the left and right index fingers

for enrollment.

2.1.2 User Verification

Verification process starts when a user enters an ID number, places a finger on the

fingerprint sensor, or inputs a password combination for comparison with the stored

template.

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2.1.3 Match Threshold Levels

Match Threshold Levels establishes a balance between False Acceptance Rate (FAR) and False

Rejection Rate (FRR). FAR is the frequency of a non-authorized user is falsely recognized and

granted access to the system. FRR the frequency of an enrolled and authorized user, who should be

granted access to the system, is denied on the basis that the system did not recognize. FAR and

FRR affect each other. Lower FAR yields to higher FRR.

You can set match threshold levels on a per-use basis. The higher the threshold is set, the higher

the security is ensured; however, it is recommended to leave this setting as default, threshold

value = 3, since the default threshold is commonly accepted as the balance of FAR and FRR rate.

In case of fingerprint verification difficulty, one can enter ID number before fingerprint verification

(1:1 match) or lower the matching threshold (1: N).

Table 2-1 Match threshold description

2.1.4 User ID number

Before the fingerprint enrollment, a user is assigned with a User ID Number. This ID number is

matched with a user’s identity and the matching fingerprint template during verification process.

An ID number is assigned sequentially based on availability; however, you may choose any ID

number as desired.

2.1.5

Authority/Privilege

Level

David-Link DL-A Door Access Control System contains authority/privilege levels:

• User: one whose identity must be verified in order to gain access into a facility or to have

his/her attendance recorded.

• Enroll Manager: One who only has access to enroll a new user.

•

General Manager: One who has access to all menu functions, except advanced settings.

• Super Manager: One who has access to all functions and is allowed to make any change in

the system setting.

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Note: A Super Manager’s enrollment is required in order to assign other privilege levels such
as Enroll Manager or General Manager.

2.1.6 Start-up

Press the power button [0] to turn on the terminal. The Start-up window will appear as the following:

2.2 How to Place the Finger

Tips: It is recommended that at least 2 fingerprints are enrolled in the terminal for each user in the

event that if one of the fingerprints is injured or damaged, a user can always user the alternate

finger for entries. Each user can enroll 1 to 10 fingerprints in the terminal.

DL-A requires each fingerprint to be pressed 3 times in order to successfully enroll the user. Place

your finger in the middle of the sensor. To ensure better fingerprint reads, each time press the finger

flat and firmly on the center of the sensor surface and cover as much of the sensor surface as

possible.

1) Correct Finger Positioning:

2) Incorrect finger Positioning:

Vertical Offset

Place finger flat on the center of sensor

surface.

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