User manual

Getting Started
R&S
®
Scope Rider RTH
10User Manual 1326.1578.02 ─ 04
Figure 1-1: Isolation scheme of the R&S RTH
The input isolation has several advantages:
●
You can measure independently floating signals simultaneously.
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The risk of causing a short circuit while measuring multiple signals is reduced sub-
stantially.
●
When measuring signals with different grounds, the induced ground currents are
kept to a minimum.
1.1.3 Measurement Categories
To ensure safe operation of measurement instruments, IEC 61010-2-030 defines par-
ticular safety requirements for testing and measuring circuits. The standard introduces
measurement categories that rate instruments on their ability to resist short transient
overvoltages that occur in addition to the working voltage of the instrument and can
exceed the working voltage many times over.
Measurement categories are distinguished as follows:
●
O - Instruments without rated measurement category
For measurements performed on circuits not directly connected to mains, for exam-
ple, electronics, circuits powered by batteries, and specially protected secondary
circuits. This measurement category is also known as CAT I.
●
CAT II:
Preface