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TABLE OF CONTENTS 
Introduction 
Product Overview............................................................................................. 1 
Scanner and Accessories.................................................................................2 
Scanner Components.......................................................................................4 
The PowerLink Cable....................................................................................... 5 
Labels...............................................................................................................6 
Maintenance..................................................................................................... 6 
Installing the Scanner to the Host System 
RS232.............................................................................................................. 7 
Keyboard Wedge..............................................................................................8 
Stand Alone Keyboard..................................................................................... 9 
RS485............................................................................................................ 10 
Full Speed USB (Integrated).......................................................................... 11 
Low Speed USB (Integrated)..........................................................................11 
Stand Kits 
Stand Components, MLPN 46-00147.............................................................12 
Hard Mounting the Stand................................................................................13 
Assembling the Stand ....................................................................................14 
Scanner Operation 
Two Default Modes of Operation.................................................................... 15 
Audible Indicators........................................................................................... 16 
Visual Indicators............................................................................................. 17 
Failure Modes.................................................................................................18 
MS1690 Depth of Field by Minimum Bar Code Element Width...................... 19 
MS1691 Depth of Field by Minimum Bar Code Element Width...................... 20 
MS1690 IR Activation Range......................................................................... 21 
MS1691 IR Activation Range......................................................................... 22 
Troubleshooting Guide....................................................................................... 23 
Design Specifications......................................................................................... 27 
Applications and Protocols................................................................................. 29