1  Safety Precautions 
1.1  Definitions and Symbols 
The following terms and symbols are used in this documentation and also appear on 
the Model 8742 Controller/Driver where safety-related issues occur. 
1.1.1  General Warning or Caution 
 
 
  General Warning or Caution Symbol 
The Exclamation Symbol in the figure above appears on the product and in Warning 
and Caution tables throughout this document.  This symbol designates that 
documentation needs to be consulted to determine the nature of a potential hazard, 
and any actions that have to be taken. 
1.1.2  Electric Shock 
 
 
  Electrical Shock Symbol 
The Electrical Shock Symbol in the figure above appears throughout this manual 
and on the product.  This symbol indicates a hazard arising from dangerous voltage.  
Any mishandling could result in irreparable damage to the equipment, and personal 
injury or death. 
1.1.3  Potential Burn Hazard 
 
 
 
 
  Hot Surface  Symbol 
The Hot Surface Symbol in the figure above appears throughout this manual and on 
the product.  This symbol indicates a hazard arising from a high temperature.  Any 
mishandling could result in personal injury.