Installation guide

RIO Network Hardware Components
890 USE 101 00 October 2006 83
Network Terminators
Overview All terminators used on the RIO network must have a power handling capability of
at least 1/4 W. Terminators designed for power-handling, CATV applications, or
broadband cable applications cannot be used on an RIO network—they do not work
in the RIO frequency range and will cause signal distortion.
Tap Port
Terminators
All unused drop connectors on taps must be terminated with a standard 75 Ω tap
port terminator. The Modicon 52-0402-000 Tap Port Terminator provides suitable
termination for this purpose, with a return loss of 22 dB and a frequency range from
100 kHz ... 30 MHz.
Trunk
Terminators
The trunk cable must be terminated at its tail-end point (in the trunk-out port of the
last tap in the trunk cable) with a trunk terminator. The Modicon 52-0422-000 Trunk
Terminator is a precision 75 Ω, 1% tolerance, 14 dB terminating resistor specifically
designed for trunk termination. Do not use the 52-0402-000 Tap Port Terminator to
terminate the trunk cable. The return loss of the 52-0422-000 Trunk Terminator is
40 dB or better at 10 MHz, and its frequency range is from 100 kHz ... 30 MHz.
3/8 - 32 THD 7/16 Hex
0.275
0.57
0.12
.025 DIA
7/16 Hex
3/8 32 THD
.025 DIA
.10
.58
Chain with Retaining Washer
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com