Fluke 19xC, Руководство пользователя

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A-1
Appendix A
Bushealth Measurements
Introduction
This Appendix contains information to extend the
information presented in Chapter 6 of this manual.
The purpose of this appendix is to give more information
on how to connect Probe(s) and Ground Lead(s) to the
Fieldbus system under test. Bear in mind however that
due to the variety of Bus Standards and Connectors used
worldwide it is impossible to cover all situations. The
connection solutions in this appendix cover those most
commonly found.
General
The Bushealth measurement is based upon the test tool’s
Scope mode. In addition to that it selects settings that are
optimized to the signal characteristics of the selected Bus
Type. The captured waveform(s) are compared to voltage
and timing criteria belonging to the tested Bus Type. This
results in quality information of these criteria (OK,
marginal, or out of range).
Caution
Fieldbusses often are controlling delicate
processes that must not be disturbed. It is
strongly recommended to contact the system
manager before any connections are made!