5
CAUTION
Up to two Switching Hubs can be connected by using the connection brackets and
connection bracket screws. Attach the connection brackets to the connection
bracket screw holes on the front and back panels to securely fix the Switching
Hubs before installation.
If the Switching Hubs are not fixed securely, they may fall, leading to injury and/or
equipment failure.
Check whether the optical fiber cable connectors are contaminated with dust, etc.
This might cause the optical signal to not be transmitted normally, and cause
misoperations and malfunctions. If they are contaminated, make sure to clean
them
off, then connect them to the optical fiber ports.
This Switching Hub is to be periodically serviced in order to maintain its
performance.
Please choose a product administrator, and have them be sure to implement
periodic maintenance. When doing maintenance, check the inspection chart that is
posted on our website which has the requisite items listed on it.
When using this Switching Hub to design systems, use it after applying
appropriate measures such as setting up redundant configurations.
Communications failures might be generated due to causes such as malfunctions or
misoperations while the Switching Hub is being used.
When using this Switching Hub for applications which require extremely high
reliability, be careful to expend all possible means to ensure safety and
reliability.
This Switching Hub was not designed nor manufactured with the intention that it be
used for applications (in use with railways, aviation, and medical care, etc. whereas
the influence rate due to communications failures is extremely high in regard to
systems that directly affect systems and human lives) which require extremely high
reliability.
Be aware of glitches which are caused in the usage environments such as
age-related degradation, etc.
This may vary depending upon conditions such as utilization rates and usage
environments, but performance might decrease due to the age-related degradation,
etc. of components. It is recommended that this Switching Hub be replaced about
five years after it has been installed.
Be careful in regards to environmental restrictions whereby the Switching Hub
can be used.
Please isolate the business power lines and communications lines. Isolate
distribution lines and other distribution lines, and low current power lines, optical
fiber cables, metallic water conduits, and gas conduits, etc. Noise may be generated
in the communications lines which might cause communications glitches.
Do not connect any other devices except for
10BASE-T/100BASE-TX/1000BASE-T devices to the twisted pair ports.
Deviation could lead to equipment failure.
Do not insert any other modules into the SFP expansion slots except for our
optional SFP modules (PN54022/PN54024).
Deviation could lead to equipment failure.
Check our website for the latest information on supported SFP modules.
Do not connect the console ports with any other device except for Serial
communication terminal.
Deviation could lead to equipment failure.
