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Characteristics and Specifications
3
U2701A/U2702A Modular Oscilloscopes User’s Guide
87
Measurement Category
The U2701A and U2702A USB modular oscilloscopes are
intended to be used for measurement in Measurement Category
I, 30 V for scope measurement.
Measurement Category Definition
Measurement CAT 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.
Measurement CAT II are measurements performed on circuits
directly connected to the low voltage installation. Examples are
measurements on household appliances, portable tools, and
similar equipment.
Measurement CAT III are 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 including stationary motors with permanent
connection to the fixed installation.
Measurement CAT IV are measurements performed at the
source of the low- voltage installation. Examples are electricity
meters and measurements on primary over current protection
devices and ripple control units.
U2700A_Modular_Scope.book Page 87 Tuesday, May 6, 2008 9:32 AM