789 
Users Manual
 
2 
To view, print, or download the latest manual supplement, 
visit http://us.fluke.com/usen/support/manuals. 
 
Address correspondence to: 
Fluke Corporation  Fluke Europe B.V. 
P.O. Box 9090,  P.O. Box 1186, 
Everett, WA 98206-9090  5602 BD Eindhoven 
U.S.A. The Netherlands 
Safety Information 
The Meter complies with EN61010-1:2001, ANSI/ISA 
S82.01-2004, CAN/CSA C22.2 No. 1010-1:2004, 
UL61010-1, Measurement Category III, 1000V, Pollution 
Degree 2 and  Measurement Category IV, 600V, Pollution 
Degree 2. 
A Warning identifies conditions and actions that pose 
hazard(s) to the user; a Caution identifies conditions and 
actions that may damage the meter or the equipment 
under test.  
International symbols used on the meter and in this 
manual are explained in Table 1. 
XWWarning 
To avoid possible electric shock or personal 
injury: 
•  Do not use the meter if it is damaged. 
Before using the meter, inspect the case. 
Look for cracks or missing plastic. Pay 
particular attention to the insulation 
surrounding the connectors. 
•  Make sure the battery door is closed and 
latched before operating the meter. 
•  Remove test leads from the meter before 
opening the battery door. 
•  Inspect the test leads for damaged 
insulation or exposed metal. Check test 
lead continuity. Replace damaged test 
leads before using the meter. 
•  Do not use the meter if it operates 
abnormally. Protection may be impaired. 
When in doubt, have the meter serviced. 
•  Do not operate the meter around 
explosive gas, vapor, or dust. 
•  Do not use in a damp or wet environment.