Cisco Model 6944 and 6940 Node bdr Dig Rev 2 1 Mux System for Prisma II Scheda Tecnica
Prisma II bdr Digital Reverse 4:1 Multiplexing System
3
Block Diagrams, continued
Laser Module
(Primary)
Optical
Output
Output
1310 nm or 1550 nm ITU Grid
DFB
Laser
Laser
Driver
1310 nm or 1550 nm ITU Grid
DFB
Laser
Laser
Driver
Optical
Output
Output
Optical Network
Optical
Input
Input
Optical
Input
Input
RF Input A
RF Input B
RF Input C
RF Input D
A/D
A/D
0 to 10 dB Variable
Attenuator
A/D
A/D
TDM
Mux
RF Output A
RF Output B
4:1 Receive Processor
Input
Select
Switch
RF Output C
RF Output D
D/A
TDM
Demux
D/A
D/A
D/A
Receiver Module
(Primary)
Photo
Detector
Limiting
Amp
Photo
Detector
Limiting
Amp
Selectable Input
Test Point -20 dB
Selectable Output
Test Point -20 dB
4:1 Transmit Processor
Laser Module
(Redundant)
0 to 10 dB Variable
Attenuator
0 to 10 dB Variable
Attenuator
0 to 10 dB Variable
Attenuator
0 to 10 dB Variable
Attenuator
0 to 10 dB Variable
Attenuator
0 to 10 dB Variable
Attenuator
0 to 10 dB Variable
Attenuator
Receiver Module
(Redundant)