User Manual

RIGOL

MSO4000/DS4000 User’s Guide

VIII

Measurement Category

The MSO4000/DS4000 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. For that reason, the transient limit capability of the

equipment is made known to the user.

Measurement category II is for measurements performed on circuits directly

connected to a low voltage installation. Examples are measurements on household

appliances, portable tools and similar equipment.

Measurement category III is for measurements performed in building installations.

Examples are measurements on distribution boards, circuit-breakers, wiring,

including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed

installation, equipment for industrial use and 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.