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- Troubleshooting the Thick Ethernet (10Base5) Cable plant.
-
- Sudden cease of communication.
- TDR available ?
- (Yes) Go to the terminator point of the cable.
- Terminator on ?
- (No) Put a terminator.
- Segment works ?
- (No)
- >plug
- (Yes) End!
- ?end
- (Yes )
- -plug
- Plug on TDR and see the picture of cable plant
- to determine points of failure.
- Is TDR determined a point of failure ?
- (Yes) End!
- ?end
- -k
- Cable point OK.
- One or more controllers or transceiver cables failed.
- Use LAN-MD to find a point of failure.
- End!
- ?end
- (No) Check with voltmeter.
- Turn off all the nodes.
- Go to termination point of the cable.
- Terminator on ?
- (No) End!
- (Yes) Check resistance of the cable.
- Is measurement 50+2 ohm?
- (Yes) Is measurement 0 ohm ?
- (Yes) Go to find a short.
- Check both connectors on a short/vision check.
- Short circuit on a connector ?
- (No) Check transceivers connectors to the cable.
- Turn on all the modes.
- Go to the terminator point of the cable and plug off a terminator.
- Is measurement 25+1 ohm ?
- (No)
- -i
- Turn off all the nodes but one and apply voltmeter.
- Is measurement 25+1 ohm ?
- (Yes) Go to another transceiver.
- All transceivers checked ?
- (Yes)
- >k
- (Yes) >i
- ?end
- (Yes) Change a transceiver.
- >i
- ?end
- (Yes)
- >k
- ?end
- ?end
- (Yes)
- -fix
- Fix a connector. Is measurement 0 ohm ?
- (Yes)
- >fix
- (No) End!
- ?end
- ?end
- (Yes) Go to another terminator point of the cable
- and check out another terminator.
- Is measurement 50+2 ohm ?
- (Yes)
- >k
- ()
- >a
- ?end
- ?end
- ?end
- -a
- Put terminator.
- Check workability of segment. Does it work ?
- (Yes) End!
- ()
- -b Are there barrel connectors on the segment ?
- (Yes) Partition the segment.
- Repeat the procedure with each partitioned part
- until all the partitions processed.
- Does the whole segment work?
- (No) >k
- (Yes) End!
- ?end
- (Yes)
- >k
- ?end
- ?end
- ?end
-
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