3com 3c16475 User Guide
Positioning the Switch
When deciding where to position the Baseline 10/100 Switch
ensure that:
ensure that:
It is accessible and cables can be connected easily.
Cabling is away from sources of electrical noise. These include
lift shafts, microwave ovens, and air conditioning units.
Electromagnetic fields can interfere with the signals on copper
cabling and introduce errors, therefore slowing down your
network.
lift shafts, microwave ovens, and air conditioning units.
Electromagnetic fields can interfere with the signals on copper
cabling and introduce errors, therefore slowing down your
network.
Water or moisture cannot enter the case of the unit.
Air flow around the unit and through the vents in the side of
the case is not restricted (3Com recommend that you provide
a minimum of 25mm (1in.) clearance).
the case is not restricted (3Com recommend that you provide
a minimum of 25mm (1in.) clearance).
The air is as free from dust as possible.
Temperature operating limits are not likely to be exceeded. It
is recommended that the unit is installed in a clean, air
conditioned environment.
is recommended that the unit is installed in a clean, air
conditioned environment.
It is always good practice to wear an anti-static wrist
strap when installing network equipment, connected to a
ground point. If one is not available, try to keep in
contact with a grounded rack and avoid touching the
unit's ports and connectors, if possible. Static discharge
can cause reliability problems in your equipment.
strap when installing network equipment, connected to a
ground point. If one is not available, try to keep in
contact with a grounded rack and avoid touching the
unit's ports and connectors, if possible. Static discharge
can cause reliability problems in your equipment.
Rack Mounting or Free Standing
The unit can be mounted in a 19-inch equipment rack using the
Mounting Kit. Refer to “Mounting Kit Instructions” on page 4, or
it can be free standing. Do not place objects on top of the unit or
stack.
Mounting Kit. Refer to “Mounting Kit Instructions” on page 4, or
it can be free standing. Do not place objects on top of the unit or
stack.
CAUTION: If installing the Baseline 10/100 Switch in a
free-standing stack of different size SuperStack 3 units,
the smaller units must be installed above the larger ones.
Do not have a free-standing stack of more than six units.
free-standing stack of different size SuperStack 3 units,
the smaller units must be installed above the larger ones.
Do not have a free-standing stack of more than six units.
Power Supply
Power problems can be the cause of serious failures and
downtime in your network. Ensure that the power input to your
system is clean and free from sags and surges to avoid
unforeseen network outages. We recommend that you install
power conditioning, especially in areas prone to black outs, power
dips and electrical storms.
downtime in your network. Ensure that the power input to your
system is clean and free from sags and surges to avoid
unforeseen network outages. We recommend that you install
power conditioning, especially in areas prone to black outs, power
dips and electrical storms.
The unit is intended to be grounded. Ensure it is connected to
earth ground during normal use. Installing proper grounding helps
to avoid damage from lightning and power surges.
earth ground during normal use. Installing proper grounding helps
to avoid damage from lightning and power surges.
Power Up
Use the following sequence to power up the Baseline 10/100
Switch:
Switch:
1
Check the network connections and cables.
2
Connect the power supply cable to the appropriate power
socket on the rear panel of the unit; refer to 4 or 6.
socket on the rear panel of the unit; refer to 4 or 6.
3
Connect the plug to the power supply outlet socket and
switch on the power supply at the socket.
switch on the power supply at the socket.
When the switch is powered on, the Power LED should be lit on.
If it is not, refer to 4.
If it is not, refer to 4.
Spot Checks
At frequent intervals you should visually check the Baseline
10/100 Switch. Regular checks can give you an early warning of a
possible failure; any problems can then be attended to when
there will be least effect on users. Check the following:
10/100 Switch. Regular checks can give you an early warning of a
possible failure; any problems can then be attended to when
there will be least effect on users. Check the following:
If you experience any problems operating the Baseline 10/100
Switch, refer to “Problem Solving” on page 4.
Switch, refer to “Problem Solving” on page 4.
Introduction
The Baseline 10/100 Switch is supplied with two mounting
brackets and four screws. These are used for rack mounting the
unit. When mounting the unit, you should take note of the
guidelines given in “Positioning the Switch” on page 3.
brackets and four screws. These are used for rack mounting the
unit. When mounting the unit, you should take note of the
guidelines given in “Positioning the Switch” on page 3.
Rack Mounting the Units
The Baseline 10/100 Switch is 1U high and will fit a standard
19-inch rack.
19-inch rack.
CAUTION: Disconnect all cables from the unit before
continuing. Remove the self-adhesive pads from the
underside of unit, if already fitted.
continuing. Remove the self-adhesive pads from the
underside of unit, if already fitted.
1
Place the unit the right way up on a hard, flat surface with
the front facing towards you.
the front facing towards you.
2
Locate a mounting bracket over the mounting holes on one
side of the unit.
side of the unit.
3
Insert the two screws supplied in the mounting kit and fully
tighten with a suitable screwdriver.
tighten with a suitable screwdriver.
4
Repeat the two previous steps for the other side of the unit.
5
Insert the unit into the 19-inch rack and secure with suitable
screws (not provided).
screws (not provided).
6
Reconnect all cables.
I
NSTALLATION
R
ECOMMENDATIONS
!
Cabling
Check that all external cabling connections are secure
and that no cables are pulled taut.
and that no cables are pulled taut.
Cooling fan
Where possible, check that the cooling fan is operating
by listening to the unit. The fan is fitted near to the front
right hand side of the unit (when viewed from the front).
by listening to the unit. The fan is fitted near to the front
right hand side of the unit (when viewed from the front).
M
OUNTING
K
IT
I
NSTRUCTIONS
4