Instruction Manual

6
RIO network commissioning
Commissioning the RIO network after initial installation, or any later modification, it is mandatory to perform the following:
• Time-Domain Reflectometer (TDR) measurement allows ensuring proper installation of the RIO copper network, but
also quality of each component (trunk cable, drop cable, tap, splitter, termination, connectors), by measuring
attenuations & return loss (total should not exceed 35dB budget) and checking network adaptation (no reflection
should appear).
o Available from Tempo®: TV90 or TV220 Cable Scout™ - Cable TV TDR
• Optical power loss kit allows ensuring proper installation of the RIO fiber network, but also quality of each component
(patch cords, main multi-fiber cable, splices, connectors), by measuring attenuations (total should not exceed 11dB
budget).
o Available from Fluke Networks™: SimpliFiber™ Optical Loss Test Kit
RIO network grounding must also be verified during commissioning:
• Checking that Trunk cable is actually grounded at only one point within 6m (20 ft.) of the RIO processor
• Remove this single ground connection and check with an ohmmeter that the whole RIO cable is now isolated from
Ground. When using optical fiber repeater, perform the same verification on all copper sub-networks.
CAUTION
ELECTRIC SHOCK
Do not disconnect RIO network from ground.
Hazardous voltage can appear on RIO cable in case of electrical fault on the network. This check should be done with
installation being powered-down.
Failure to follow these instructions can result in equipment damage.
How to go further
• To know about RIO cable suppliers, cable preparation and installation procedure,
• To know about fundamental RIO network tests to ensure reliability,
• To know about RIO troubleshooting and common problems,
o See RIO Cable System planning & installation guide (890USE10100).
o See Grounding and Electromagnetic Compatibility of PLC Systems - Basic Principles and Measures User
Manual
• To know about RIO optical fiber troubleshooting and broken cable detection
o See Optical Fiber Repeaters User’s Guide (GM-FIBR-OPT).
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Printed in 11 /2009