Keysight Technologies InfiniiVision 2000, Service Manual

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14 2000/3000 X-Series Oscilloscopes Service Guide
1
Characteristics and Specifications
Measurement Category
Measurement Category
The InfiniiVision 2000/3000 X-Series oscilloscopes are not intended to be used for
measurements in Measurement Category II, III, or IV.
Measurement Category Definitions
The "Not rated for CAT II, III, IV" measurement category 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
(not rated for CAT II, III, IV). No transient overvoltages allowed.