Datasheet

A-3
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Appendix A Hardware Specifications
A.1.8 System Timing
A.1.8 System Timing
The ONS 15454 SDH has the following system timing specifications:
• Stratum 3E, per ITU-T G.813
• Free running accuracy: +/– 4.6 ppm
• Holdover stability: 3.7 exp –7/day, including temperature (< 255 slips in first 24 hours)
• Reference: External building integrated timing supply (BITS), line, internal
A.1.9 System Power
The ONS 15454 SDH has the following power specifications:
• Input voltage: –48 VDC
• Maximum Current Rating: 24 A (at –48 VDC)
• Power requirements:
– Nominal: –48 VDC
– Tolerance limits: –40.5 to –57.0 VDC
• Power terminals: 3WK3 Combo-D power cable connector (MIC-A/P and MIC-C/T/P faceplates)
• Fusing: Maximum 30 A fuse panel
A.1.10 System Environmental Specifications
The ONS 15454 SDH has the following environmental specifications:
• Operating temperature: 0 to +40 degrees Celsius (32 to 104 degrees Fahrenheit)
• Operating humidity: 5 to 95 percent, noncondensing
A.1.11 Dimensions
The ONS 15454 SDH shelf assembly has the following dimensions:
• Height: 616.5 mm (24.27 in.)
• Width: 535 mm (17 in.) without mounting ears attached
• Depth: 280 mm (11.02 in.)
• Weight: 26 kg (57.3 lb) empty
A.2 SFP and XFP Specifications
Table A-1 lists the specifications for the available Small Form-factor Pluggables (SFPs) and 10 Gbps
Pluggables (XFPs). In the table, the following acronyms are used:
• ESCON = Enterprise System Connection
• FICON = fiber connectivity