A-1
Appendix A
Bushealth Measurements
Introduction
This Appendix contains information to extend the
information presented in the Fluke 125 Users Manual.
This concerns Chapter 4 – Fieldbus Measurements and
more in particular Table 4-1. This table shows for each
Fieldbus type the ScopeMeter channels and probe types
to be used for testing.
The purpose of this Appendix is to give more information
on how to connect Probe(s) and Ground Lead 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 Supplement cover those most
commonly found.
General
The Bushealth measurement is based upon the
instrument’s Scope mode. In Scope mode the instrument
displays the waveforms of the bus signals. Once a signal
is captured it requires expert knowledge on how to
interpret these signals. Bushealth makes signal
interpretation very easy. The captured waveform(s) are
compared against voltage and timing criteria as specified
for the tested Bus Type, resulting in clear quality
information of these criteria (OK, marginal, or out of
range).