Cisco ONS 15454 DWDM - Page 745

A-53
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Appendix A Hardware Specifications
A.9.3 TXP_MR_2.5G and TXPP_MR_2.5G Card Specifications
– Fiber: 1550-nm single-mode
– Maximum chromatic dispersion allowance: 5400 ps/nm
– Loopback modes: Terminal and facility
Caution You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the TXP_MR_2.5G
and TXPP_MR_2.5G cards in a loopback on the trunk port. Do not use direct fiber loopbacks
with the TXP_MR_2.5G and TXPP_MR_2.5G cards. Using direct fiber loopbacks causes
irreparable damage to the TXP_MR_2.5G and TXPP_MR_2.5G cards.
– Connectors: LC
• Transmitter (trunk side)
– Maximum transmitter output power: +1 dBm
– Minimum transmitter output power: –4.5 dBm
– Transmitter: Direct modulated laser
– Wavelength stability (drift): +/– 25 picometers (pm)
Note An optical device on the card keeps the laser wavelength locked as closely as possible to the ITU nominal
value. The allowed drift is +/– 25 pm.
• Currently available wavelengths of TXP_MR_2.5G and TXPP_MR_2.5G (eight card versions):
ITU grid blue band: 1530.334 to 1544.526 nm (four card versions covering four wavelengths each)
ITU grid red band: 1546.119 to 1560.606 nm (four card versions covering four wavelengths each)
• Receiver (trunk side, see Table A-32)
– Receiver: APD
– Link loss budget: 24 dB minimum, with no dispersion or 22 dB optical path loss at
BER = 1 * 10 exp – 12 including dispersion
Table A-32 TXP_MR_2.5G/TXPP_MR_2.5G Card Receiver Trunk Side Specifications
OSNR
1
1. OSNR defined with 0.1 nm resolution bandwidth (RBW)
FEC Type Pre-FEC BER Post-FEC BER
Input Power
Sensitivity
Chromatic Dispersion
Tolerance
22 dB Off - 2R < 10 exp – 12 N/A – 9 to – 24 dBm —
22 dB Off - 2R < 10 exp – 12 N/A – 9 to – 21 dBm +/– 3300ps/nm
21 dB Off - 3R < 10 exp – 12 N/A – 9 to – 30 dBm —
22 dB Off - 3R < 10 exp – 12 N/A – 9 to – 30 dBm +/– 1800ps/nm
23 dB Off - 3R < 10 exp – 12 N/A – 9 to – 30 dBm +/– 5400ps/nm
12 dB Standard- 3R < 10 exp – 5 < 10 exp – 15 – 9 to – 25 dBm —
12 dB Standard- 3R < 10 exp – 5 < 10 exp – 15 – 9 to – 24 dBm +/– 1800ps/nm
12 dB Standard- 3R < 10 exp – 5 < 10 exp – 15 – 9 to – 23 dBm +/– 5400ps/nm
21 dB Standard- 3R < 10 exp – 5 < 10 exp – 15 – 9 to – 31 dBm —