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Technical Specifications
Hotwire Model 8820-A2-500 GranDSLAM Technical Specifications
8820-A2-GN20-30
Specifications
Criteria*
Physical
Height: 24.5 inches or 14 U (62.23 cm)
Dimensions
Width: 17.20 inches (43.69 cm) (with 19-inch mounting brackets)
Depth: 11.50 inches (29.21 cm) (with no cables)
12.00 inches (30.48 cm) (with rear cables)
14.70 inches (37.34 cm) (with front and rear cables)
Weight: 49 pounds (22.3 kg) (without cards)
Power
The chassis operates from a standard CO 48 VDC power supply
(–42.0 to –57.0 VDC). Both front and rear power connections require
the use of 8 AWG standard wire.
Power dissipation depends upon the type and number of port cards
installed in the chassis. The 8820 GranDSLAM is capable of supporting
up to seventeen 65-watt port cards, for a total chassis dissipation of
approximately 1300 watts.
When installed under NEBS rules, the maximum power dissipation for a
single rack is based on a 181.2 watts per square foot limit. The square
footage allocated to a rack equipped with the 8820 GranDSLAM chassis
is approximately 7 square feet. This equates to a maximum permissible
NEBs power dissipation of 1268.4 watts per rack.
An 8510 4-port RADSL card dissipates 18 watts. This allows up to three
8820 GranDSLAM chassis to be installed in a single rack, with two
chassis being fully equipped and the third partially equipped (or any
combination thereof which does not exceed the 1268.4 NEBS
maximum). Be careful not to exceed the 1268.4 NEBS limit when
installing port cards for the first time, when adding cards to an existing
chassis, or when replacing existing port cards with cards of a different
type or wattage.
Grounding
Power lug on rear of chassis accepts 8 AWG wire.
NEBS
The Hotwire 8820 GranDSLAM is Network Equipment-Building System
(NEBS) certified.
Cooling and Air
Each Hotwire 8820 GranDSLAM is cooled by its integral, plug-in fan
Handling
module assembly. Each chassis is independently cooled in a stack; it
does not rely on vertical air flow in a frame.
* Technical Specifications subject to change without notification
March 2001
B
.
B-1
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