Filter
Top Products
A-3
Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Appendix A Hardware Specifications
A.1.7 Alarm Interface
• Hardware flow control
• TCC2/TCC2P: EIA/TIA-232 DB-9 type connector
A.1.7 Alarm Interface
The ONS 15454 alarm interface has the following specifications:
• Visual: Critical, Major, Minor, Remote
• Audible: Critical, Major, Minor, Remote
• Alarm contacts: 0.045 mm, –48 V, 50 mA
• 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 ANSI has the following power specifications:
• Nominal Input Voltage: –48 VDC
• Power consumption: Configuration dependent; 55 W (fan tray only)
• Power requirements: