Symbol LT 1806 Installation and operation manual

LT 1806 (Keyboard Wedge/Synapse)
Product Reference Guide
70-32538-01
Revision A
October 1997
About This Manual
Table of Contents
Glossary
Copyright
Feedback
Index
Click on red text at any location in the manual to jump to the
specified chapter, topic, or reference.

Copyright  1997 by Symbol Technologies, Inc. All rights reserved.
No part of this publication may be reproduced or used in any form, or by any electrical or
mechanical means, without permission in writing from Symbol. This includes electronic or
mechanical means, such as photocopying, recording, or information storage and retrieval
systems. The material in this manual is subject to change without notice.
Symbol reserves the right to make changes to any product to improve reliability, function,
or design.
Symbol does not assume any product 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 by implication, estoppel, or otherwise under any
patent right or patent, covering or relating to any combination, system, apparatus,
machine, material, method, or process in which Symbol products might be used. An
implied license only exists for equipment, circuits, and subsystems contained in Symbol
products.
Symbol Technologies, Inc.
One Symbol Plaza
Holtsville, N.Y. 11742-1300
http://www.symbol.com
FCC Information
This device complies with Part 15 of the FCC rules, and Canadian RSS:210. Operation is
subject to the following two conditions: (1) this device may not cause harmful interference,
and (2) this device must accept any interference received, including interference that may
cause undesired operation.

Contents-i
Contents
About This Manual
Notational Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Symbol Support Center. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii
Chapter 1. Setting Up the LT 1806
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Set Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Connecting Your Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Synapse Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Chapter 2. Scanning with the LT 1806
Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
LT 1806 Decode Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Chapter 3. Maintenance and Specifications
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
What If... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
LT 1806 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Chapter 4. Programming the LT 1806
Scanning Sequences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Scanning Sequence Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Parameter Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Set Parameter Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Keyboard Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
National Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Numeric Keypad Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Break Key Code Transmission. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Code Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Fixed Lengths for Code 2 of 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Decode Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Decode UPC/EAN Supplementals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Beep After Good Decode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Contents-ii
Beeper Volume. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Trigger Mode (for triggered models only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Decode Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Scan Data Transmission Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Prefix/Suffix (On-board hosts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Prefix/Suffix (Synapse). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Communications Delays and Timeouts (Intercharacter Delay) . . . . . . . . . . . . . . . . . . . . . . 4-9
Prefix/Suffix Transmit Delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
UPC A and E Preamble(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Scan and Store (Code 39 Buffering). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Standard Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Beeper Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Full ASCII Code 39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Prefixes and Suffixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Keyboard Identifier Maps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
Code 39 Buffering (Scan and Store). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Chapter 5. Parameter Menus
Set Default. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Keyboard Types and Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Keyboard Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
National Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Numeric Keypad Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Break Key Code Transmission. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Code Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Fixed Lengths For Code 2 of 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Decode Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
UPC/EAN Supplementals Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
Beep After Good Decode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
Beeper Volume. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Trigger Mode (for triggered models only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
Decode Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Scan Data Transmission Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
Prefix/Suffix (On-board hosts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35
Prefix/Suffix (Synapse). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39
Communications Delays and Timeouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42
Prefix/Suffix Transmit Delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45
UPC-E/UPC-A Preamble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-48
Code 39 Scan and Store. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-50
Glossary
Index

About-i
About This Manual
The LT 1806 Product Reference Guide provides general instructions for setup,
operation, troubleshooting, maintenance, and programming.
Notational Conventions
The following conventions are used in this document:
•
Bullets (•) indicate:
- action items
- lists of alternatives
- lists of required steps that are not necessarily sequential
•
Sequential lists (e.g., those that describe step-by-step procedures) appear
as numbered lists.
Related Publications
•
LT 1850/1806 Quick Reference Guide 70-31613-XX
Service Information
If you have a problem with your equipment, contact the Symbol Support
Center. Before calling, have the model number, serial number, and several of
your bar code symbols 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 symbol readability, the
Support Center will request samples of your bar codes for analysis at our plant.

About-ii
LT 1806 Product Reference Guide: About This Manual
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: Symbol Technologies is not responsible for any damages
incurred during shipment if the approved shipping
containerisnotused.Shippingtheunitsimproperlycan
possibly void the warranty. If the original shipping
container was not kept, contact Symbol to have another
sent to you.
Symbol Support Center
In the U.S.A, for service information, warranty information or technical assis-
tance, call:
SYMBOL SUPPORT CENTER
1-800-653-5350
If you purchased your Symbol product from a Symbol Business Partner, con-
tact that Business Partner for service.
Canada
Mississauga, Ontario
Canadian Headquarters
[phone]
Europe
Wokingham, England
European Headquarters
0734-771-222 (Inside UK)
[phone] (Outside UK)
Asia
Singapore
Symbol Technologies Asia, Inc.
337-6588 (Inside Singapore)
[phone] (Outside Singapore)

1-1
Chapter 1
Setting Up the LT 1806
Overview
LT 1806 provides the best all-around close range scanning performance,
reliability, and value available. Its physical design, which combines a
lightweight yet solid feel with excellent ergonomics for scanning, ensures
comfortable use.
The LT 1806 hand-held scanner is based on the Visible Laser Diode (VLD) as a
light source. Combined with our surface mount technology and patented
resonating harmonic scan element, this state-of-the-art scanner provides solid
state dependability.
Laser performance gives you accuracy and faster read rates on virtually any
bar code substrate, including colors.
The LT 1806 weighs 6.0 ounces (170 gm) without the cable and is made
from a durable, flame retardant plastic.

1-2
LT 1806 Product Reference Guide: Setting Up the LT 1806
Set Up
The LT 1806 scanner is a keyboard “wedge” interface which adds efficient,
reliable bar code reading to your terminal. Since entered scan data is
transmitted as keystrokes, no software changes to the host system are
necessary.
Unpacking
Remove the LT 1806 from its packing and inspect it for damage. If the scanner
was damaged in transit, call the Symbol Support Center at one of the telephone
numbers listed in About This Manual . KEEPTHE PACKING . It is the approved
shipping container and should be used if you ever need to return your
equipment for servicing.
ConnectingYour Scanner
The scanner contains on-board discrete keyboard wedge communications for
connecting to asynchronous terminals and host systems. It can also
accommodate any of the Synapse™ “Smart Cables” which allows you to
connect to a wide variety of host systems. Some installations require one cable;
others require additional adapters between the keyboard, the PC, and the
y-cable.
1. Switch off the PC and unplug the keyboard connector.
2. Attach the modular connector of the Y-cable to the scanner port on the
scanner.
3. Connect the round male DIN host connector of theY-cable to the keyboard
port on host device.
4. Connect the round female DIN keyboard connector of the Y-cable to the
keyboard.
5. If needed, attach the optional power supply to the connector in the middle
of the Y-cable.
6. Make sure that all the connections are secure.
7. Switch on your host system. You are now ready to read bar codes.
During scanning, PC compatible host terminals should be in the CAPS LOCK
OFF mode.

1-3
LT 1806 Product Reference Guide: Setting Up the LT 1806
Figure 1-1. Keyboard Wedge Configuration with “Y” Cable
Host Connector
Keyboard
Connector Modular
Connector LT 1806
Power Supply
(As Required)

1-4
LT 1806 Product Reference Guide: Setting Up the LT 1806
Synapse Configuration
See the Synapse Interface Guide provided with your Synapse cable for setup
instructions.
Figure 1-2. Synapse Configuration
LT 1806
Host
Power Supply
(As Required)
Synapse
Adapter Cable
Synapse
“Smart
Cable”

2-1
Chapter 2
Scanning with the LT 1806
Scanning
•
Make sure the scanner is connected to the controller or portable data
terminal before you turn on the system.
•
Make sure the symbol you want to scan is within the LT 1806 scanning
range. (See LT 1806 Decode Zone on page 2-2.)
•
If the scanner is in triggerless mode, simply bring the scanner to the bar
code. The scan beam is in a constant blinking state which becomes steady
when the scanner is decoding a bar code.
• If the scanner is in triggered mode, bring the scanner to the bar code and
press the trigger. The scan beam (and red LED on the top of the scanner)
illuminates for approximately 1 second, or until a successful decode.
•
The scan beam must cross every bar and space on the symbol.
•
When the symbol has been decoded, you hear a short, high-tone beep,
and the green decode LED lights.
RIGHT WRONG
012345 012345

2-2
LT 1806 Product Reference Guide: Scanning with the LT 1806
LT 1806 Decode Zone
Figure 2-1. LT 1806 Decode Zone
SCANNER NOSE
5.5 mil (0"-.75")
6 mil (0" - 1")
7.5 mil (0" - 2.2")
WIDTH OF FIELD
.5 in
1.27 cm
1 in
2.54 cm
1.5 in
3.81 cm
2 in
5.08 cm
2.5 in
6.35 cm
.5 in
1.27 cm
1.5 in
3.81 cm
2 in
5.08 cm
1 in
2.54 cm
3 in
7.62 cm
.5 in
1.27 cm
1 in
2.54 cm
1.5 in
3.81 cm
2 in
5.08 cm 5 in
12.70 cm
0 in
0 cm
DISTANCE FROM SCANNER
0 in
0 cm
13 mil (0"-5") (100% UPC/EAN)
2.5 in
6.35 cm
3 in
7.62 cm
2.5 in
6.35 cm
3 in
7.62 cm
3.5 in
8.89 cm
4 in
10.16 cm
4.5 in
11.43 cm

3-1
Chapter 3
Maintenance and Specifications
Maintenance
Cleaning the exit window is the only maintenance required. Adirty window
may affect scanning accuracy.
•
Do not allow any abrasive material to touch the window.
•
Remove any dirt particles with a damp cloth.
•
Wipe the window using a tissue moistened with ammonia/water.
•
Do not spray water or other cleaning liquids directly into the window.
•
Do not remove the nose of the scanner.

3-2
LT 1806 Product Reference Guide: Maintenance and Specifications
What If...
Nothing happens when you follow the operating
instructions.
You Should
•
Check the system power.
•
Make sure the scanner is programmed for the terminal in use.
•
Make sure the controller is programmed to decode bar codes of the
symbology you are scanning.
• Check for loose cable connections.
•
Make sure the symbol is not defaced.
•
Try scanning test symbols of the same code type.
Scanned data is incorrectly displayed on the terminal.
You Should
•
Make sure that the system was programmed for the correct keyboard
type.
•
Make sure that the CAPS LOCK key is off.
Note: If after performing these checks the symbol still
does not scan, contact your distributor or call the
Symbol Support Center at one of the telephone
numbers listed in About This Manual .

3-3
LT 1806 Product Reference Guide: Maintenance and Specifications
Accessories
Standard Accessories
Part Number Description
70-32538-0X LT 1806 Product Reference Guide
70-31613-0X LT 1850/1806 Quick Reference Guide
50-11400-007 Shipping Box
Power Supply
Part Number Description
50-14000-008 110V, 60Hz
50-14000-009 220V, 50Hz
Cables
Listed below are the cables required for each host:
Power Adapter
Terminal/PC Y-Cable Supply? Kit
IBM PS/2 25/30/30-386 25-31828-01 Yes N/A
IBM PS/2 50/55SX/60/
65SX/70/80* 25-31828-01 No N/A
NCR 7052 K.W. 25-31828-01 Yes N/A
IBM PC AT/XT and PC Clones 25-31828-01 No KT-32903-01
*These PS/2 systems may require an external power supply if multiple
peripheral devices or expansion cards are installed. The system needs to
supply a minimum of 160 mA for proper LT 1806 operation.

3-4
LT 1806 Product Reference Guide: Maintenance and Specifications
Synapse Adapter Cables
Hosts using Synapse cables require one of the following Adapter Cables:
Part Number Description
25-31617-01 6-foot Straight Cable
Optional Accessories
Part Number Description
20-12769-01 Hands-Free Stand - Desk Mount (non-adjustable)
20-08414-01 Hands-Free Stand - Free Standing (adjustable)
20-08415-01 Hands-Free Stand - ECR Mount (adjustable)
21-08288-02 Desk-Mount Stand
23-08253-01 Wall-Mount Stand
20-08416-01 Holster/Belt Clip

3-5
LT 1806 Product Reference Guide: Maintenance and Specifications
Technical Specifications
ITEM DESCRIPTION
Power Requirements 5 VDC ±10%; 120 mA average current (160 mA
peak)
Decode Capability The LT 1806 can be programmed to decode the
following code types: UPC/EAN, Code 39,
Code 39 Full ASCII, Codabar, Interleaved 2 of 5,
Code 128, UCC/EAN 128, Discrete 2 of 5, and
Code 93. Set code length(s) for any 2 of 5 code type.
Full autodiscrimination as required.
Beeper Operation User-selectable: Enable, Disable
Beeper Volume User-selectable: Full Volume, Low Volume
Decode Depth of Field Maximum typical working distance is 5.0 in.
(12.70 cm) (100% UPC/EAN); minimum element
width resolution is 5.5 mils
Scan Repetition Rate 40 (± 3) scans/sec (bidirectional)
Skew Tolerance ± 35˚ min. (from normal)
Pitch Tolerance -20˚ to +60° (from normal)
Print Contrast Minimum 25% minimum reflectance differential, measured at
675 nm.
Ambient Light Immunity Immune to direct exposure to normal office and
factory lighting conditions, as well as direct
exposure to sunlight.
Output Presentation Host keystroke format
Durability 5 ft (152 cm) drops to concrete
Operating Temperature 32˚ to 104˚ F (0˚ to 40˚ C)
Storage Temperature -40˚ to 140˚ F (-40˚ to 60˚ C)
Straight Cable Length 6 ft (183 cm)
Weight (without cable) 6.0 oz (170 gm)

3-6
LT 1806 Product Reference Guide: Maintenance and Specifications
LT 1806 Dimensions
Figure 3-1. LT 1806 Dimensions
Height: 1.8 in (4.6 cm) Handle Width: 2.0 in (5.1 cm)
Nose Width: 2.8 in (7.1 cm)
Table Height: 2.4 in (6.1 cm)
Length: 8.0 in (20.3 cm)

4-1
Chapter 4
Programming the LT 1806
Before programming the scanner, follow the instructions in Chapter 1: Setting
Up the LT 1806.
If the default values suit your requirements, scan the SET DEFAULT bar code.
An LT 1806 is programmed for parameters other than default values by
scanning sequences of bar codes. Chapter 5: Parameter Menus contain all the bar
codes necessary to program the scanner for each parameter selection.
Scanning Sequences
A scanning sequence establishes a value for one parameter type. During a
scanning sequence, scan bar codes for a parameter type, a parameter value,
and ENTER. The Scanning Sequence Flowchart on page 4-3 illustrates the
process.
Scanning Sequence Examples
To program the scanner for all default settings except for two parameters,
DECODE UPC ONLY (NOT EAN) and INTERCHARACTER DELAY, first
scan the SET DEFAULT bar code. The default for DECODE UPC ONLY (NOT
EAN) is DISABLE; to ENABLE this, scan the three bar codes in the order listed
below:
SCAN YOU WILL HEAR . . .
1. DECODE UPC ONLY (NOT EAN) Short high tone
2. ENABLE Short high tone
3. ENTER Hi/Lo/Hi/Lo warble
After the last scan in a successful scanning sequence (ENTER), the warble
sound (i.e., hi/lo/hi/lo) indicates that the scanner has been successfully
programmed for the selected parameter. See Beeper Definitions on page 4-13.

4-2
LT 1806 Product Reference Guide: Programming the LT 1806
To set the INTERCHARACTER DELAY parameter scan a two digit numeric
entry. Note that single digit entries must have a leading zero. The
INTERCHARACTER DELAY default is 00 ms; in this example you want to set
it to 2 ms. To program the scanner for a 2 ms INTERCHARACTER DELAY
scan the four bar codes listed below.
SCAN YOU WILL HEAR . . .
1. INTERCHARACTER DELAY Short high tone
2. 0Short high tone
3. 2Short high tone
4. ENTER Hi/Lo/Hi/Lo warble
ErrorsWhile Scanning
Don’t worry if you make an error during a scanning sequence. There are two
special-purpose bar codes, BACKSPACE and CANCEL, to help you.
Scanning the BACKSPACE bar code erases the value of the previous bar code
scanned but keeps you within the scanning sequence for a parameter type.
Scanning CANCEL removes you from the current sequence so that you can
start again.