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RIGOL
DS8000-R User Guide V
Measurement Category
Measurement Category
DS8000-R series digital oscilloscopes can make measurements in Measurement
Category I.
WARNING
This oscilloscope can only be used for measurements within its specified
measurement categories.
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. Thus, you must know the transient withstand
capability of the equipment.
Measurement category II is for measurements performed on circuits directly
connected to low voltage installation. Examples are measurements on household
appliances, portable tools and similar equipment.
Measurement category III is for measurements performed in the building installation.
Examples are measurements on distribution boards, circuit-breakers, wiring
(including cables, bus-bars, junction boxes, switches and socket-outlets) in the fixed
installation, and equipment for industrial use and some other equipment. For
example, stationary motors with permanent connection to a fixed installation.
Measurement category IV is for measurements performed at the source of a
low-voltage installation. Examples are electricity meters and measurements on
primary overcurrent protection devices and ripple control units.
Ventilation Requirement
This oscilloscope uses a fan to force cooling. Please make sure that the air intake and
exhaust areas are free from obstructions and have free air. When using the
oscilloscope in a bench-top, allow at least 30 cm clearance from both sides of the
instruments; when using it in rack setting, keep at least 1 m clearance from the
surroundings of the cabinet. When running in the cabinet, keep it run in the room
temperature below 30°C.
WARNING
Inadequate ventilation may cause an increase of temperature in the
instrument, which would cause damage to the instrument. So please
keep the instrument well ventilated and inspect the air outlet and the fan
regularly.
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