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2
I
S
ELECTING A
Switches can be mounted in a standard 19-inch equipment rack or on a flat
surface. Be sure to follow the guidelines below when choosing a location.
The site should:
◆
restrict access to authorized service personnel in accordance with IEC
■
60950-1. A restricted access location is one where access is secure and
limited to service personnel who have a special key, or other means of
security.
be at the center of all the devices you want to link and near a power
■
outlet.
be able to maintain its temperature within -40 to 65 °C (-40 to 149 °F)
■
and its humidity within 5% to 95%, non-condensing.
provide adequate space (approximately five centimeters or two inches)
■
on all sides for proper air flow.
be accessible for installing, cabling and maintaining the devices.
■
allow the status LEDs to be clearly visible.
■
Make sure twisted-pair cable is always routed away from power lines,
◆
fluorescent lighting fixtures and other sources of electrical interference,
such as radios and transmitters.
Make sure that the unit is connected to a separate grounded power outlet
◆
within 2 m (6.6 feet) of each device and is powered from an independent
circuit breaker. As with any equipment, using a filter or surge suppressor is
recommended. This switch provides two power module options: -48 VDC
and universal AC. Verify that the external power requirements for the
selected option can be met as listed under
NSTALLING THE
S
ITE
S
WITCH
"Power Supply" on page
– 33 –
74.
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