Lucent Technologies FT-2000 OC-48 - Detailed Description of Operation; OC12 (1.3 STD) Circuit Pack Block Diagram

Circuit Pack Descriptions
Issue 8.0 July 2002
7-73
Detailed Description of Operation 7
Transmission Circuitry 7
A block diagram of the OC12 circuit pack is shown in Figure 7-23.
Figure 7-23. OC12 (1.3 STD) Circuit Pack Block Diagram
Optical
Rx
STS-12
4
STS-3
High
Speed
Switch
MATRIX
To/From
Backplane
Laser
Transmitter
1:4
DEMUX
4:1
MUX
PP
PP
RBP
TBP
e/o
STS-3
44
4 44
e/o
STS-12
+5V -5.2V
-2.2V
-48V A
-48V B
-48V RTN
Board
Controller
BC LAN
Tx Direction
Rx Direction
nc-ft2000-003
Clock
Recovery
4