Measurement Category; Measurement Category Definitions - Agilent Technologies InfiniiVision 7000 Series Service Manual

Measurement Category

Measurement Category

WA R N I N G

Measurement Category Definitions

7000 Series Oscilloscopes Service Guide
The InfiniiVision 7000 Series oscilloscope is intended to be
used for measurements in Measurement Category I.
Use this instrument only for measurements within its specified
measurement category.
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 withstand capability of the equipment is made
known to the user.
Measurement category II is for measurements performed on
circuits directly connected to the 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, socket- outlets in the fixed
installation, and equipment for industrial use and some
other equipment, for example, stationary motors with
permanent connection to the fixed installation.
Measurement category IV is for measurements performed at
the source of the low- voltage installation. Examples are
electricity meters and measurements on primary overcurrent
protection devices and ripple control units.
Characteristics and Specifications 1
15