Rigol MSO5104 — руководство пользователя по цифровым осциллографам и их категориям измерений [7/360]

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RIGOL

MSO5000 User's Guide V

Measurement Category

MSO5000 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 or rack setting, provide at least 10 cm clearance beside,

above and behind the instrument for adequate ventilation.

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.