Safety Symbols 
The following safety symbols are used throughout this manual. Familiarize yourself with each 
of the symbols and its meaning before operating this instrument. 
Caution 
• 
The caution sign denotes a hazard. It calls attention to a procedure which, 
if not correctly performed or adhered to, could result in damage to or 
destruction of the instrument. Do not proceed beyond a caution sign until the 
indicated conditions are fully understood and met. 
Warning 
0 
The warning sign denotes a hazard. It calls attention to a procedure which, 
if not correctly performed or adhered to, could result in injury or loss of life. 
Do not proceed beyond a warning sign until the indicated conditions are fully 
understood and met. 
General Safety Considerations 
Warning 
0 
Before this instrument is switched on, make sure it has been properly grounded 
through the protective conductor of the ac power cable to a socket outlet 
provided with protective earth contact. 
Any interruption of the protective (grounding) conductor, inside or outside 
the instrument, or disconnection of the protective earth terminal can result in 
personal injury. 
Warning There are many points in the instrument which can, if contacted, cause personal 
injury. Be extremely careful. 
9 Any adjustments or service procedures that require operation of the instrument 
with protective covers removed should be performed only by trained service 
personnel. 
Caution 
• 
Before this instrument is switched on, make sure its primary power circuitry 
has been adapted to the voltage of the ac power source. 
Failure to set the ac power input to the correct voltage could cause damage to 
the instrument when the ac power cable is plugged in.