Idle Bus Menu - Metasys - LIT-12012443 - Software Application - MS-FIT100-0 Field Inspection Tool

MS-FIT100-0 Field Inspection Tool User Guide

Brand
Metasys
Product name
MS-FIT100-0 Field Inspection Tool
Document type
User Guide
Document number
LIT-12012443
Revision date
2019-09-11
Language
English

When selected, the Idle Bus Menu reads the bus bias voltage when no communications are present. Proper idle bus voltage levels will not be displayed unless EOL termination is present. The idle bus voltage menu shows the + line voltage with respect to the COM line and the – line voltage with respect to the COM line. The FIT can still read this voltage on an active communication bus by taking readings during communication pauses. For acceptable Idle Bus Voltage ranges, see Voltage Levels and the Voltage Table .

Note: It is possible and normal for there to be minor voltage fluctuations while reading Idle Bus Voltages.
Figure 1. Idle Bus Menu

See Idle Bus Voltage Levels for more information.