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To connect your KRF module to the port of the module you wish to
connect to the broadband cable system:
1.
Use a short length (as short as possible, 100 ft maximum) of
twinaxial cable to run between the 1771-KRF and the module
(Typically, the KRF is mounted next to the DH/DH+ or reomte I/O
module in the 1771 I/O chassis.)
2.
Be certain that you terminate the twinaxial cable at the DH/DH+ or
remote I/O module with a 150 ohm resistor (if the DH/DH+ or
remote I/O module is not already terminated internally). The
1771-KRF module provides a built-in 150 ohm termination
resistance so no termination resistor is required at the 1771-KRF.
3.
Plug the 3-pin connector of your twinaxial cable into the top
connector of the KRF module.
Connecting to a DH/DH+ Module
The following figures show how to connect the KRF to a DH/DH+
module using either a 3, 9, 15, or 62-pin connector for the 1784-KT.
Figure 4.2
Connecting to a DH/DH+ module with a 3 pin terminal block
Terminals on
3 - pin terminal block
Clear
1
Shield
SH
Blue
2
1771 - KRF
Twinaxial Cable
(cat. no. 1770-CD)
Chapter 4
Installing and Connecting the 1771 KRF
Clear
1
Shield
150W
SH
resistor
Blue
required.
2
DH/DH+ Communication
Interface Module
17277
4 3
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