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Chapter 3
Troubleshooting
This chapter includes the information on general troubleshooting.
Make sure you are using the correct VDC power suppliers (12 to 48 VDC) or power
adapters. Do not use power adapters with DC output over 48V. It will damage devices.
Select Ethernet cables with specifications suitable for your applications to set up your
systems. Ethernet cables are categorized into unshielded twisted-pair (UTP) and shielded
twisted-pair (STP) cables. Category 3, 4, 5 Ethernet cables are suitable for systems with 10
Mbps transmission speed. For systems with 100 Mbps transmission speed, Category 5
Ethernet cables are the only suitable specifications for this environment. You also need to
make sure that the distance between each node cannot be longer than 100 meters (328
feet).
IF the power indicator does not turn on when the power cord is plugged in, you may have a
problem with power cord. Than check for loose power connections, power losses or surges
at power outlet. IF you still cannot resolve the problem, contact your local dealer for
assistance.
