User Manual
1587 FC/1587/1577 
Users Manual 
6 
Hazardous Voltage 
To alert you to the presence of a potentially hazardous 
voltage, when the Meter detects a voltage ≥30 V or a 
voltage overload (), the Z symbol is displayed. 
Test Lead Alert 
To remind you to check that the test leads are in the 
correct terminals,  shows momentarily when you move 
the rotary switch to or from the c position. 
 Warning 
To prevent possible electric shock, fire, or 
personal injury, use the correct terminals, 
function, and range for measurements. 
Battery Saver (Sleep Mode) 
The Meter enters “Sleep mode” and blanks the display if 
there is no function change or button press for 20 minutes. 
This is done to conserve battery power. The Meter comes 
out of Sleep mode when a key is pressed or when the 
rotary switched is turned. 
To disable Sleep mode, hold down the blue button while 
you turn on the Meter. Sleep mode is always disabled in 
the MIN MAX AVG recording mode, AutoHold mode, or 
when the insulation test is active. 










