Datasheet

Table Of Contents
4-25
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 4 Optical Cards
4.12.1 OC192 IR/STM64 SH 1550 Card Functionality
The OC192 IR/STM64 SH 1550 card provides one short-range, ITU-T G.707- and G.957-compliant,
SDH STM-64 port per card. The port operates at 9.95328 Gbps over unamplified distances up to 40 km
with SMF-28 fiber limited by loss and/or dispersion. The card supports concatenated or nonconcatenated
payloads on a VC-4 basis, as well as VC-4, VC-3, and VC-12 payloads.
Caution You must use a 3 to 15 dB fiber attenuator (5 dB recommended) when working with the
OC192 IR/STM64 SH 1550 card in a loopback. Do not use fiber loopbacks with the
OC192 IR/STM64 SH 1550 card. Using fiber loopbacks can cause irreparable damage to the
OC192 IR/STM64 SH 1550 card.
Warning
The laser is on when the optical card is booted. The port does not have to be in service for the laser
to be on.
Figure 4-11 shows the OC192 IR/STM64 SH 1550 faceplate and block diagram.
Figure 4-11 OC192 IR/STM64 SH 1550 Faceplate and Block Diagram
4.12.1 OC192 IR/STM64 SH 1550 Card Functionality
You can install OC192 IR/STM64 SH 1550 cards in Slot 5, 6, 12, or 13. You can provision this card as
part of an MS-SPRing, SNCP, or linear configuration, or as a regenerator for longer span reaches.
Demux
CDR
Flash SRAM
Optical
transceiver
ADC x 8
Demux
BTC
ASIC
STM-64/
OC-192
STM-64/
OC-192
STM-64 / OC192
STM-64 / OC192
SCL
Processor
134388
B
a
c
k
p
l
a
n
e
Mux
CK Mpy
Optical
transceiver
Mux
SCL
FAIL
ACT
SF
1
Tx
Rx
OC192IR
STM64SH
1550