Measurement Category; Measurement Category Definitions - Rigol DS1102E Quick Manual

RIGOL
personnel before further operations.
Provide Proper Ventilation. Refer to the installation instructions
for proper ventilation of the instrument.
Do Not Operate in Wet/Damp Conditions.
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 DS1000E, DS1000D 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 300Vrms. To avoid the danger of electric shock, do
not connect the inputs to circuit's voltages above 300Vrms.
Transient overvoltage is also present on circuits that are isolated
from mains. The DS1000E, DS1000D series Digital Oscilloscopes is
designed to safely withstand occasional transient overvoltage up to
1000Vpk. Do not use this equipment to measure circuits where
transient overvoltage could exceed this level.
Quick Guide for DS1000E, DS1000D Series
III