Technical data

Characteristics and Specifications 1

7000 Series Oscilloscopes Service Guide 15

Measurement Category

The InfiniiVision 7000 Series oscilloscope is intended to be used

for measurements in Measurement Category I.

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 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.

WARNING

Use this instrument only for measurements within its specified

measurement category.

7000 service guide.book Page 15 Thursday, October 16, 2008 12:18 PM