NOTE
NOTE1: Input interface
MITSUBISHI (OPTICAL DEVICES)
MF-2500DS-T12-18x/19x/20x/21x
MF-2500DS-R13-18x
MF-2500DS-R14-19x/20x/21x
SONET/SDH TRANSMITTER & RECIEVER
Data
Data
Transmitter
50ohm
VBB
AC Coupled Interface
NOTE2: Shut Down Command interface
Signal detect H
L
Transmitter
Optical signal
OFF
ON
TTL
Td
comparator
The transmitter is normally enabled and only requires
an external voltage to disable.
NOTE3: Laser bias / Laser backface monitor interface
LD Module
A.P.C
Laser backface
current monitor
Laser bias
current monitor