Installation guide

Planning and Designing RIO Cable System
890 USE 101 00 October 2006 29
Using a Trunk
Splitter in a Hot
Standby System
Using a single MA-0331-000 splitter as a branching device on the trunk in a Hot
Standby system is allowed. As in standalone systems, the original requirement
when using the MA-0186-X00 as a trunk splitter was that the trunk extensions
running from it need to be balanced to prevent signal reflections. The MA-0331-000
splitter has higher port to port isolation so the balance requirement is not as
important, although it should be observed as close as is practical.
When an MA-0331-000 trunk splitter is used in the Hot Standby network, the
minimum distance between it and the MA-0186-X00 combiner splitter is 8 ft. Overall
distance from the RIO head to the MA-0331-000 trunk splitter should not exceed 100
ft.
Primary PLC Standby PLC
HSBY Fiber Interconnect Cable
MA-0186-000 Splitter
First RIO Drop (Branch A)
Last RIO Drop (Branch A)
First RIO Drop (Branch B)
Last RIO Drop (Branch B)
Tap Tap
STFA
P/S PLC RIO HSBY I/O I/O
P/S PLC RIO HSBY I/O I/O
I/OI/OI/OP/S RIO P/S RIO I/O I/O I/O
P/S RIO I/O I/O I/O P/S RIO I/O I/O I/O
STFA
Tap
Tap
Trunk Terminator Trunk Terminator
MA-0331-000
Splitter
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com