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SDS1000X-E&SDS1000X-U User Manual
VI
WWW.SIGLENT.COM
Measurement Category
Measurement Categories
This oscilloscope can make measurements in other circuits that are not directly connected
to mains.
WARNING
This oscilloscope can only be used for measurements within its specified
measurement categories. Not to use the product for measurements within
other measurement categories, such as CAT II, CAT III, CAT IV.
Not to use the equipment for measurements on mains circuits
Measurement Category Definitions
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 over current
protection devices and ripple control units.
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