Model DS508/DS516/DS524 Dual Speed Stackable Hub Installation Guide
Rear Panel
The rear panel of a Model DS508, Model DS516, and Model DS524 hub has two LEDs, one
labeled Terminator and one labeled 10/100 Mbps Bridge. The Terminator LED indicates whether
or not the built-in terminator in that hub is active (the built-in terminator eliminates the need for an
external terminator). The 10/100 Mbps Bridge LED indicates which hub has the active bridge.
Before you begin installing the hubs, prepare the installation site. Make sure your operating
environment meets the operating environment requirements of the equipment.
Characteristic Requirement
Temperature Ambient temperature between 0
°
and 40
°
C
(32
°
and 104
°
F). No nearby heat sources such as
direct sunlight, warm air exhausts, or heaters.
Humidity 90% maximum relative humidity, noncondensing.
Ventilation Minimum 2 inches (5.08 cm) on all sides for cooling.
Adequate airflow in room or wiring closet.
Operating
conditions At least 6 feet (1.83 m) to nearest source of electromagnetic noise (such as
photocopy machine
or arc welder).
Service access Minimum 12 inches (19.68 cm) front and back for service access and
maintenance.
Front and back clearance for cables and wiring hardware such as punchdown
blocks.
Power Adequate power source within 6 feet (1.83 m).
Tabletop
requirements Flat area approximately 13.0 inches (33.0 cm) by
8.0 inches (20.3 cm).
Rear Panel of the Model DS508, Model DS516,
and Model DS524 Hubs
100-240 VAC 50-60 Hz 0.5A
Terminator
Cascade Down
Cascade Up
10/100 Mbps
Bridge
8153FA
Terminator LED
10/100 Mbps Bridge LED
Cascade Up connector
Cascade Down connector
Power receptacle
8152FA
100M 10M
vista RJ-45
network ports
Site Preparation