Hubbel RFL PLC Hybrid Pro, Руководство пользователя

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RF-MCHYBRIDPRO-01
Hubbell Power Systems, Inc. – RFL™ Products
June 2019 10 973.334.3100
3 Example Applications and Recommended
Configurations
When applying hybrids, the number of transmitters and receivers, as well as the application of each
(DCB/On-Off or transfer trip/FSK), will determine what hybrid configuration will work best for each
system. There are several different ways to connect hybrids but generally there are best practices that
should be observed. The examples shown below illustrate typical hybrid configurations and show how
hybrids work
together . The exact performance characteristics of individual hybrids are discussed later
in this manual.
3.1 One Transmitter, One Receiver (FSK)
TX
SK
RX
to/from Line Tuner
Figure 2 – One Transmitter, One Receiver – (FSK)
The configuration shown in
F
IGURE
2 is the simplest hybrid configuration. Here, a skewed hybrid is
used to combine a single transmitter / single receiver onto one coax cable for connection to a single
tuner. This is a typical single-function, single-phase-to-ground coupled FSK system.
3.2 Two Transmitters, Two Receivers (FSK)
TX1
TX2
BAL
SK
RX1
RX2
to/from Line Tuner
Figure 3 – Two Transmitters and Two Receivers (FSK)
The system shown in
F
IGURE
3 is an expansion of the system in F
IGURE
2 . Here, there are two
transmitters, so a balanced hybrid (used to combine transmitters) is added. The output of the balanced