Cisco Systems 15454 A.1.8 EIA Interface, A.1.9 BITS Interface, A.1.10 System Timing, A.1.11 System Power, A.1.12 System Environmental Specifications

A-3
Cisco ONS 15454 Reference Manual, R7.0
78-17191-01
Appendix A Hardware Specifications
A.1 A.1.8 EIA Interface
• Backplane access: Alarm pin fields
A.1.8 EIA Interface
The ONS 15454 EIA interface has the following specifications:
• SMB: AMP #415504-3 75-ohm, 4-leg connectors
• BNC: Trompeter #UCBJ224 75-ohm 4 leg connector (King and ITT are also compatible)
• AMP Champ: AMP#552246-1 with #552562-2 bail locks
A.1.9 BITS Interface
The ONS 15454 building integrated timing supply (BITS) interface has the following specifications:
• 2 DS-1 BITS inputs
• 2 derived DS-1 outputs
• Backplane access: BITS pin field
A.1.10 System Timing
The ONS 15454 has the following system timing specifications:
• Stratum 3 per Telcordia GR-253-CORE
• Free running accuracy: +/–4.6 ppm
• Holdover stability: 3.7 x10–7 per day, including temperature (< 255 slips in first 24 hours)
• Reference: External BITS, line, internal
A.1.11 System Power
The ONS 15454 has the following power specifications:
• Input power: –48 VDC
• Power consumption: Configuration dependent; 72 W (fan tray only)
• Power requirements: –40.5 to –57 VDC
• Power terminals: #8-32 screw. Ring or fork type lug suitable for 10 AWG stranded conductor with
a 0.375inch maximum width.
• ANSI shelf: Two 30 A fuses (customer supplied fuse and alarm panel)
• HD shelf: 30 A fuse per shelf (customer supplied fuse and alarm panel)
A.1.12 System Environmental Specifications
The ONS 15454 has the following environmental specifications:
• Operating temperature: 0 to +55 degrees Celsius; –40 to +65 degrees Celsius with industrial
temperature rated cards