Alcatel 1660SM Technical Handbook page 475

Tx side (from LPC matrix to HPA ):
•
insertion of VC–m unequipped signal label
•
path trace insertion
•
BIP–2 insertion
•
REI and RDI insertion
LSUT is used to monitor unequipped path trails .
The main tasks of LPOM are :
•
trace identifier monitoring
•
RDI and REI recovering and deriving for performance primitives
•
signal label monitoring
•
VC–m BIP–2 errored block count
LPOM is used for performance monitoring purposes.
Other functions implemented are :
•
RIBUS I/F
This block is used to read/write from/to the "RIBUS" stream, to control the LED on the unit, to
release the Management–bus in case of power failure, and to use the remote inventory. RIBUS
I/F is powered by the + 3.3 Vdc supply by CONGI boards.
•
REMOTE INVENTORY
It is the memory containing the board information, for identification purposes (see para. 3.17
on page 370 for details).
•
M–BUS Driver
It drives the input–output gates of the Management–bus. These drivers can be disabled (by
the Bus–OFF signal) in case of power failure.
DC/DC CONVERTERS
This block converts the 48/60 V power supply to the following voltages:
•
3.3 V and 2.5 V used to supply all the components in the board.
•
–5.2 V to supply the optical module
The DC/DC converter is synchronized with a synchronization clock at 300 MHz (signal
Power–Sync, generated by G.A.) in order to avoid EMI problems.
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