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B-42
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
December 2006
Appendix B Hardware Specifications
B.5.4 MXP_MR_2.5G and MXPP_MR_2.5G Card Specifications
–
Bit rate: 2.488 Gbps for OC-48/STM-16
–
Code: Scrambled NRZ
–
Fiber: 1550-nm single-mode
–
Maximum chromatic dispersion allowance: 6000 ps/nm
–
Loopback modes: Terminal and facility
Caution
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the MXP_MR_2.5G
and MXPP_MR_2.5G cards in a loopback on the trunk port. Do not use direct fiber loopbacks
with the MXP_MR_2.5G and MXPP_MR_2.5G cards. Using direct fiber loopbacks causes
irreparable damage to the MXP_MR_2.5G and MXPP_MR_2.5G cards.
–
Connectors: LC
–
Compliance: Telcordia GR-253-CORE, Telcordia GR-2918-CORE, Issue 2, ITU-T G.957, and
ITU-T 100-GHz grid standard G.692
•
Transmitter (trunk side)
–
Transmit power: +3 +/– 1 dBm with MXP_MR_2.5G card, and +/– 1 dBm with
MXPP_MR_2.5G card
–
50-GHz DWDM migration ready (the wavelength deviation is less than +/– 0.040 nm through
wavelocker deployment)
–
Four-channel wavelength tunability at 100-GHz spacing
–
Transmitter maximum return reflectance: –27 dB
–
Chromatic dispersion allowance: 5400 ps/nm, giving an optical power penalty < 2.0 dB
–
Minimum side mode suppression ratio: 30 dB
–
Transmitter is a 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 the TXP_MR_2.5G and TXPP_MR_2.5G cards (eight card
versions):
ITU grid blue band: 1530.334 to 1544.526 nm (four card versions, four wavelengths each)
ITU grid red band: 1546.119 to 1560.606 nm (four card versions, four wavelengths each)
•
Receiver (trunk side)
Table B-20
MXP_MR_2.5G/MXPP_MR_2.5G Receiver Trunk Side Specifications
OSNR
1
FEC Type
Pre-FEC BER
Post-FEC BER
Input Power
Sensitivity
Chromatic Dispersion
Tolerance
17 dB
N/A
<10 exp – 12
N/A
– 9 to – 23 dBm —
17 dB
N/A
<10 exp – 12
N/A
– 9 to – 22 dBm +/– 1800 ps/nm
17 dB
N/A
<10 exp – 12
N/A
– 9 to – 21 dBm +/– 5400 ps/nm
18 dB
N/A
<10 exp – 12
N/A
– 9 to – 23 dBm +/– 1800 ps/nm
Summary of Contents for ONS 15454 DWDM
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