Microsens MS453510 - Manual (Page 14)

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connections or 100Ω Category 5 cable for 100Mbps connections. Also be sure
that the length of any twisted-pair connection does not exceed 100 meters (328
feet). Gigabit port should use Cat-5 or cat-5e cable for 1000Mbps connections.
The length does not exceed 100 meters.
 Improper Network Topologies
It is important to make sure that user have a valid network topology. Common
topology faults include excessive cable length and too many repeaters (hubs)
between end nodes. In addition, user should make sure that network topology
contains no data path loops. Between any two ends nodes, there should be only
one active cabling path at any time. Data path loops will cause broadcast storms
that will severely impact network performance.
Diagnosing LED Indicators
The switch can be easily monitored through panel indicators to assist in
identifying problems, which describes common problems you may encounter and
where user can find possible solutions.
If the power indicator does turn on when the power cord is plugged in, user may
have a problem with power outlet, or power cord. However, if the switch powers
off after running for a while check for loose power connections, power losses or
surges at power outlet. If the problem still cannot be resolved, contact the local
dealer for assistance.