Rigol DS1102/4B User Manual page 5

RIGOL
Do not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
The disturbance test of all the models meet the limit values of A in the
standard of EN 61326: 1997+A1+A2+A3, but can't meet the limit values
of B.
Measurement Category
The DS1000B series Digital Oscilloscope is intended to be used for measurements in
Measurement Category I.
Measurement Category Definitions
Measurement Category I is for measurements performed on circuits not directly
connected to MAINS. Examples are measurements on circuits not derived from
MAINS, and specially protected (internal) MAINS derived circuits. In the latter case,
transient stresses are variable; for that reason, the transient withstand capability of
the equipment is made known to the user.
WARNING
IEC Measurement Category I. The input terminals may be connected to circuit
terminal in IEC Category I installations for voltages up to 300 VAC. To avoid the
danger of electric shock, do not connect the inputs to circuit's voltages above 300
VAC.
Transient overvoltage is also present on circuits that are isolated from mains. The
DS1000B series Digital Oscilloscopes is designed to safely withstand occasional
transient overvoltage up to 1000 Vpk. Do not use this equipment to measure circuits
where transient overvoltage could exceed this level.
© 2008 RIGOL Technologies, Inc. III
User's Guide for DS1000B Series