Cisco ONS 15454 Reference Manual page 232

4.17 4.17.1 OC192 LR/STM64 LH ITU 15xx.xx Card-Level Indicators
Figure 4-20
STM-64 / OC192
STM-64 / OC192
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the
Note
OC192 LR/STM64 LH 15xx.xx card in a loopback. Do not use fiber loopbacks with the
OC192 LR/STM64 LH 15xx.xx card. Using fiber loopbacks causes irreparable damage to this card.
Eight of the cards operate in the blue band with a spacing of 100 GHz in the ITU grid (1534.25 nm,
1535.04 nm, 1535.82 nm, 1536.61 nm, 1538.19 nm, 1538.98 nm, 1539.77 nm, and 1540.56 nm). The
other eight cards operate in the red band with a spacing of 100 GHz in the ITU grid (1550.12 nm,
1550.92 nm, 1551.72 nm, 1552.52 nm, 1554.13 nm, 1554.94 nm, 1555.75 nm, and 1556.55 nm).
You can install OC192 LR/STM64 LH ITU 15xx.xx cards in Slot 5, 6, 12, or 13. You can provision this
card as part of an BLSR, path protection, or linear configuration or also as a regenerator for longer span
reaches.
The OC192 LR/STM64 LH ITU 15xx.xx port features a laser on a specific wavelength in the
1550-nm range and contains a transmit and receive connector (labeled) on the card faceplate. The card
uses a dual SC connector for optical cable termination. The card supports 1+1 unidirectional and
bidirectional facility protection. It also supports 1:1 protection in four-fiber BLSR applications where
both span switching and ring switching might occur.
The OC192 LR/STM64 LH ITU 15xx.xx card detects SF, LOS, or LOF conditions on the optical facility.
Refer to the Cisco ONS 15454 Troubleshooting Guide for a description of these conditions. The card also
counts section and line BIP errors from B1 and B2 byte registers in the section and line overhead.
4.17.1 OC192 LR/STM64 LH ITU 15xx.xx Card-Level Indicators
Table 4-18
Cisco ONS 15454 Reference Manual, R7.0.1
4-40
OC192 LR/STM64 LH ITU 15xx.xx Block Diagram
Optical Demux
transceiver CDR
Optical Mux
transceiver
CK Mpy
ADC x 8
describes the three card-level LEDs on the OC192 LR/STM64 LH ITU 15xx.xx card.
Demux
Mux
SRAM Flash Processor
Chapter 4 Optical Cards
STM-64/
OC-192
SCL
BTC
B
ASIC
a
STM-64/
c
OC-192
k
SCL p
l
a
n
e
OL-9217-01