Cisco Model 6940 Coll Term 3 Port Unbal Opto Node 870 MHz w 42 54 MHz Split 数据表
Model 6940 Optoelectronic Node - 5-42/54-870 MHz
2
Block Diagram
Optional
Redundant
Power Supply
External T.P.
-30 dB
Fiber
Management
Pr
ima
ry R
X
ry R
X
Redundant
RX
Forward Output
(to launch amp)
RCVR
XMTR
TP
Pr
ima
ry TX
ry TX
Redundant
TX
Reverse Input
(from launch amp)
Fwd Output T.P.
& Rev Injection
- 20 dB
External T.P.
-30 dB
External T.P.
-30 dB
External T.P.
-30 dB
Forward
Plug-In
(Thru Jumper
or SMC Thru
Jumper)
Port 4
Port 5
Port 6
Port 3
Port 2
Port 1
Primary Power
Supply
RCVR
- 20 dB
TP
XMTR
TP
AC
bypass
AC
bypass
AC
bypass
fuse
shunt
fuse
shunt
fuse shunt
Net Board
FWD
REV
FWD
REV
FWD
REV
Reverse
Switch
Reverse
Switch
FWD
REV
Reverse
Switch
LPF
Rev
EQ
Reverse
Output
Output
Status
Monitoring
Reverse
Combiner
Forward
Splitter
(PDD)
Rev Output T.P.
-20 dB
Reverse T.P.
-20 dB
Rev Input T.P.
-20 dB
Fwd Output T.P.
& Rev Injection
- 20 dB
Launch Amplifier
Input from
Receiver
Receiver
Fwd Output T.P.
& Rev Injection
- 20 dB
Optical Interface Board
crow bar
AC
bypass
AC
bypass
AC
bypass
fuse shunt
fuse shunt
fuse
shunt
- 20 dB
TP
Fwd Output T.P.
& Rev Injection
- 20 dB
D
iode
P
hot
o
o
D
iode
P
hot
o
o
P
P
P
P
D
iode
Laser
D
iode
Laser
P
P
P
P
P
P
P
P
P
P
Rev Input T.P.
-20 dB
Rev Input T.P.
-20 dB
Rev Input T.P.
-20 dB
IS EQ
Reverse
Switch
Reverse
Switch