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The KRF module takes the signals from the DH/DH+ or remote I/O
module as input and transmits them on the broadband cable. This allows
the DH/DH+ and remote I/O protocol to be transmitted directly over the
broadband link, creating a communication link on a broadband cable
instead of on the traditional twinaxial baseband cable. The
communication rate over the DH/DH+ or remote I/O link is 57.6 or
115.2K baud. The baud rate you use depends on the modules you are
using.
The KRF acts as a companion module to each DH/DH+ or remote I/O
module on the broadband. You need one KRF for each DH/DH+ or
remote I/O module that communicates over the broadband. The KRF's
industrialized, single–slot, 1771 form factor design lets you install it in
any 1771- I/O chassis.
You connect the KRF to the DH/DH+ or remote I/O module with a length
(up to 100 ft) of twinaxial baseband cable. Connect the KRF to broadband
with a standard broadband drop cable.
The KRF is frequency agile over 18 subchannel pairs, which allows 1-18
DH/DH+ or remote I/O links to operate directly on a single broadband
cable system.
The table below shows the possible interfaces for broadband alone and
with the KRF module. A single cable system could carry all of these
services in addition to closed circuit TV security systems, satellite
distribution channels and more to create a total facility communication
system.
Table 1.A
Broadband/KRF Possible Interfaces
Ethernet
Broadband
X
Broadband + KRF
X
Chapter 1
Product Overview
Arcnet
MAP
X
X
X
X
DH
DH+
X
X
Remote I/O
X
1 3
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