A-15
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
AppendixA Hardware Spec ifications
A.5.4 DS3i-N-12 Card Specifications
A.5.4 DS3i-N-12 Card Specifications
The DS3i-N-12 card has the following specifications:
DS3i-N-12 input
Bit rate: 44.736 Mbps +/–20 ppm
Frame format: ITU-T G.704, ITU-T G.752/DS-3 ANSI T1.107-198 8
Line code: B3ZS
Termination: Unbalanced coaxial cable
Input impedance: 75 ohms +/– 5%
Cable loss:
Maximum 137 m (450 ft): 734A, RG59, 728A
Maximum 24 m (79 ft): RG179
AIS: ITU-T G.704 compliant
DS3i-N-12 output
Bit rate: 44.736 Mbps +/– 20 ppm
Frame format: ITU-T G.704, ITU-T G.752/DS-3 ANSI T1.107-198 8
Line code: B3ZS
Termination: Unbalanced coaxial cable
Output impedance: 75 ohms +/–5%
AIS: ITU-T G.704 compliant
Power level: –1.8 to +5.7 dBm (The power level is for a signal of all ones and is me asured at a
center frequency of 22.368 MHz (3 +/– 1 kHz) bandwidth.)
Pulse shape: ITU-T G.703, Figure 14/ANSI T1.102-1988, Figure 8
Pulse amplitude: 0.36 to 0.85 V peak-to-peak
Loopback modes: terminal and facility
Line build out: 0 to 69 m (0 to 225 ft); 69 to 137 m (22 6 to 450 ft)
DS3i-N-12 electrical interface
Connectors: 1.0/2.3 miniature coax connectors via the FMEC-E3/DS3 c ard
Environmental
Overvoltage protection: As in ITU-T G.703 Annex B
Operating temperature: –5 to +45 degrees Celsius (+23 to +113 degrees Fahrenheit)
Operating humidity: 5 to 95%, noncondensing
Power consumption: 26.80 W, 0.56 A at –48 V, 91.5 BTU/hr
Dimensions
Height: 321.3 mm (12.650 in.)
Width: 18.2 mm (0.716 in.)
Depth: 228.6 mm (9.000 in.)
Depth with backplane connector: 235 mm (9.250 in.)