Cisco GSR12/60 - 12012 Router -AnyLAN, SONET/SDH Installation And Configuration Manual page 89

Table 2-7 Estimating Link Loss
Link Loss Factor
Higher order mode losses
Clock recovery module
Modal and chromatic dispersion Dependent on fiber and wavelength used
Connector
Splice
Fiber attenuation
After calculating the power budget minus the data link loss, the result should be greater than
zero. Results less than zero may have insufficient power to operate the receiver.
For SONET versions of a line card, the signal must meet the worst case parameters listed
in Table 2-8.
Table 2-8 Line Card SONET Signal Requirements
Single-Mode
PT –18.5
PR –30
PB 11.5
Estimate of Link Loss Value
0.5 dB
1 dB
0.5 dB
0.5 dB
1 dB/km
Multimode
–15
–28
13
Site Requirement Guidelines
Preparing for Installation 2-19