Terminating Cable Segments - Honeywell EXPERION PKS Installation Manual

Chapter 7 - ControlNet Cable Installation
7.3.2

Terminating cable segments

To eliminate signal reflections from the ends of the ControlNet network trunk segment, you must attach
a ControlNet 75 ohm trunk terminator to the first and last taps on the segment. (The terms "first" and
"last" refer to the physical location of the node along the trunk cable.)
CAUTION
The taps on the ends of the segment have only one cable attached to them. This leaves an open,
or unterminated, end on the segment. Signals transmitted along the cable will reflect off these
unterminated ends and interfere with transmission. The trunk terminator is used to eliminate
these reflections.
1. Connect one end of the trunk-cable section to one of the tap's BNC connectors.
- 53 -