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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.

1.4 Ventilation Requirement

This instrument uses a fan to force cooling. Please make sure that the air inlet and

outlet areas are free from obstructions and have free air. When using the instrument

in a bench-top or rack setting, provide at least 10 cm clearance beside, above and

behind the instrument for adequate ventilation.

CAUTION

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.

1.5 Working Environment

Temperature

Operating: 0℃ to +50℃

Non-operating: -30℃ to +60℃

Humidity

• Operating:

Below +30℃: ≤90% RH (without condensation)

+30℃ to +40℃: ≤75% RH (without condensation)

Safety Requirement

HDO1000 User Guide

Rigol HDO1000 Series User Manual

Other manuals for Rigol HDO1000 Series