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SSU-2000 Shelf Specifications
Table F-1. General Specifications (Continued)
Characteristics
Main Shelf
SDU-2000 Expansion
MINOR
MAJOR
CRITICAL
Power Connections
DC
DC Power @ -48 vDC
Fuse Type/Rating
Grounds
Width
Depth
Height
Weight (provisioned)
Temperature
Operational Stratum Levels
Relative Humidity
Operational
Temperature
Operational Short Term
Non-Stratum performance
Relative Humidity
Operational Short Term
438 SSU-2000 User's Guide
Distribution Capacity
Up to 9 DS1/E1 output modules in Main Shelf
20 outputs per output module
Up to 4 Expansion Shelves
Up to 14 output modules per expansion shelf with 20 outputs per
module
Maximum of 1120 outputs in 4 expansion shelves
Alarm Closures
Contact closure (NC or NO) 1 Amp Form C
Contact closure (NC or NO) 1 Amp Form C
Contact closure (NC or NO) 1 Amp Form C
Chassis Power and Grounds
A & B Input connections at opposite upper sides of the rear panel
–38 to –72.5 vDC, (–48 vDC nominal)
< 240 watts, per chassis
2 fuses; GMT-5A
–48V return DC, isolated from frame and logic grounds.
Chassis Mechanical
17 inches (43.2 cm)
11.5 inches (29.2 cm)
10.5 inches (26.7 cm)
~ 27 lbs (12.3 kg)
Chassis Environmental
+1.7 C to +49 C @ 8.3 C max rate of change per hour
GR-1244-CORE Sec. 2.2
5% to 85% Non-condensing
GR-63-CORE Sec. 4.1.2 ETS 300 019-1 Class 3.1
–5 C to +50 C @ 30 C max per hour rate of change.
Duration <96 hours
GR-63-CORE Sec. 4.1.2 ETS 300 019-1 Class 3.1
5% to 90% Non-condensing. Duration <96 hours
GR-63-CORE Sec. 4.1.2 ETS 300 019-1 Class 3.1
Specification
12713020-002-2 Revision D – April 2004
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Troubleshooting
