The 17 SMR9 FS, 24
SMR9 FS, 34 SMR9 FS, and SMR20 FS cards are tunable over 96 channels in the
C-band, at 50-GHz spacing on the ITU-T grid. The card provides the flex
spectrum capability, which allows the user the flexibility to allocate the
channel bandwidth, to increase the network scalability. The channel bandwidth
is not fixed, but can be defined arbitrarily, with a given granularity and
within a given range. Attenuation and power values are defined for each
sub-range. The central frequency ranges from 191350 Ghz (1566 .72 nm) to 196100
Ghz (1528 .77 nm).
The 17 SMR9 FS, 24
SMR9 FS, 34 SMR9 FS, and SMR20 FS cards are single-slot cards that integrate
two cross-connect blocks (multiplexer and demultiplexer), variable gain EDFA
pre-amplifier, and variable gain EDFA booster amplifier. The 17 SMR9 FS, 24
SMR9 FS, and 34 SMR9 FS cards support up to 9 directions for each ROADM node.
The SMR20 FS card supports up to 20 directions for each ROADM node. The cards
can be installed in any service slots in the
Cisco NCS 2002, NCS 2006, and NCS 2015 chassis. The cards
can be used in point-to-point, ring, multi-ring, or mesh topologies.
The EDFA
pre-amplifier in SMR20 FS card has switchable gain ranges. The following table
describes the gain ranges and extended gain ranges of EDFA pre-amplifier in the
17 SMR9 FS, 24 SMR9 FS, 34 SMR9 FS, and SMR20 FS cards.
Table 17 Gain Ranges and
Extended Gain Ranges of EDFA Pre-Amplifier
Card
|
Gain Range
|
Extended Gain
Range
|
17 SMR9 FS
|
0 - 17 dB
with controlled tilt
|
20 dB with
uncontrolled tilt
|
24 SMR9 FS
|
12 - 24 dB
with controlled tilt
|
27 dB with
uncontrolled tilt
|
34 SMR9 FS
|
20 - 34 dB
with controlled tilt
|
40 dB with
uncontrolled tilt
|
SMR20 FS
|
Gain Range 1:
0 - 17 dB with controlled tilt
|
20 dB with
uncontrolled tilt
|
SMR20 FS
|
Gain Range 2:
12 - 24 dB with controlled tilt
|
35 dB with
uncontrolled tilt
|
For more information
about the 17 SMR9 FS, 24 SMR9 FS, 34 SMR9 FS and SMR20 FS cards such as the
block diagrams and the specifications, see the
data sheet.