User manual

Getting Started
R&S
®
Scope Rider RTH
11User Manual 1326.1578.02 ─ 04
For measurements performed on circuits directly connected to the low-voltage
installation by a standard socket outlet, for example, household appliances and
portable tools.
●
CAT III:
For measurements performed in the building installation, such as junction boxes,
circuit breakers, distribution boards, and equipment with permanent connection to
the fixed installation.
●
CAT IV:
For measurements performed at the source of the low-voltage installation, such as
electricity meters and primary overcurrent protection devices.
Figure 1-2: Examples of measurement categories
The higher the category, the higher the expected transient overvoltage. Overvoltages
can overload a circuit and cause electrical and physical damage. Therefore, use the
measurement instrument only in electrical environments for which the instrument is
rated.
The measurement categories correspond to the overvoltage categories of the
IEC60664 standards. Working voltages stated in context with measurement categories
are always specified as effective voltages V (RMS) against earth ground.
1.1.4 Documentation Overview
The user documentation for the R&S RTH consists of the following parts:
●
Instrument Help
The instrument help is part of the instrument's firmware. It offers quick, context-
sensitive access to the complete information directly on the instrument.
●
Basic Safety Instructions
This brochure provides safety instructions as well as operating conditions and fur-
ther important information. The brochure is delivered with the instrument in printed
form.
●
Getting Started
The Getting Started manual provides the information needed to set up and start
working with the instrument, and describes basic operations. The English edition of
Preface