Card Descriptions
Table 99 4-Port POS OC-12c/STM-4c Card Specifications
Specification SR-1 IR-1
Interface Telcordia SONET OC-12
SR -1 / SDH STM S-4
Telcordia SONET OC-12
IR-1 / SDH STM I-4
Link power budget
(3)
7.0 dB 12.0 dB
Nominal wavelength
1310 nm 1310 nm
Connector type LC LC
Cable type SMF SMF
Compliance SFF-8472 and INF-8074i
Telcordia GR-253, ITU
G.957
SFF-8472 and INF-8074i
Telcordia GR-253, ITU
G.957
Transmitter
Optical output power –8.5 dBm (max)
–15.0 dBm (min)
–8.0 dBm (max)
–15.0 dBm (min)
Path penalty
––
Center wavelength range
1270 to 1360 nm 1270 to 1360 nm
Extinction ratio 8.2 dB (min) 8.2 dB (min)
Side-mode suppression radio
–
30.0 dB (min)
Spectral width 3.0 nm (max) (RMS) 2.5 nm (max)
(4)
Receiver
Wavelength range
1270 to 1580 nm 1270 to 1580 nm
Sensitivity –23.0 dBm –28.0 dBm
Overload level 0.0 dBm 0.0 dBm
(1) Each optical port has separate connectors for the transmit (Tx) and receive (Rx) circuits.
(2) Protection features for various types of cards and ports depend on the release of the SmartEdge OS; the system
supports a mix of protected and unprotected ports.
(3) The link power budget is calculated using (minimum output power) – (minimum sensitivity) – (optical path power
penalty); power penalty is 1.
(4) Measured 20 dB down from center wavelength.
12527/153 30-CRA 119 1170/1 Uen A | 2010-04-09
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