RIGOL 
MSO7000/DS7000 User Guide  VII 
Pollution Degree Definition 
Pollution Degree 1: No pollution or only dry, nonconductive pollution occurs. The 
pollution has no effect. For example, a clean room or air-conditioned office 
environment. 
Pollution Degree 2: Normally only nonconductive pollution occurs. Temporary 
conductivity caused by condensation is to be expected. For example, indoor 
environment. 
Pollution Degree 3: Conductive pollution or dry nonconductive pollution that 
becomes conductive due to condensation occurs. To be found in industrial 
environment or construction sites (harsh environments). For example, sheltered 
outdoor environment. 
Pollution Degree 4: The pollution generates persistent conductivity caused by 
conductive dust, rain, or snow. 
For example, outdoor areas. 
 
Safety Class 
Class 1 – Grounded Product 
 
 
Care and Cleaning 
 
Care 
Do not store or leave the instrument where it may be exposed to direct sunlight for 
long periods of time. 
 
Cleaning 
Clean the instrument regularly according to its operating conditions.   
1.  Disconnect the instrument from all power sources. 
2.  Clean the external surfaces of the instrument with a soft cloth dampened with 
mild detergent or water. Avoid having any water or other objects into the chassis 
via  the  heat  dissipation  hole.  When  cleaning  the  LCD,  take  care  to  avoid 
scarifying it.