Cisco Model 6942 Four Port Optoelectronic Node 870 MHz with 55 70 MHz Split 数据表
Model 6942 Four Port Optoelectronic Node – 5-42/54-870 MHz
2
Model 6942 with Dual Reverse Segmentation
Status
Mon.
Rx
Tx
#3
#3
Tx
#4
Rx
#1
#1
Rx
#2
#2
Rx
#3
#3
Rx
#4
Tx
#2
Tx
#1
#1
Return Router Plug-in
Location
Local Insert
LPF
Status Mon. Tx
LPF
Fiber Management Tray
XM
TR
TR
Laser
D
iode
TP
XM
TR
TR
Laser
D
iode
TP
RCV
R
Photo D
iode
-20dB
TP
F2
F1
Optional
Secondary
Power Supply
Primary
Power
Supply
75 Term
75 Term
75 Term
Optical Interface Board
P4
P5
P6
P1
P2
P3
Launch Amplifier
P3
P4
P5
P6
AC
BYPASS
Fwd Output and
Rev Injection
-20dB T.P.
AC
Bypass
AC
Bypass
AC
Bypass
AC
Bypass
Power Director
AC
Bypass
AC
Bypass
Crowbar
Rev Input
-20dB T.P.
External
-30dB T.P.
External
-30dB T.P.
External
-30dB T.P.
External
-30dB T.P.
Power Director
Power Director
Power Director
Power Director
Power Director
Reverse Router
Forward Redundancy Plug-in
Location
P
P
P
FWD
REV
P
Rev
Switch
P
FWD
REV
Rev
Switch
P
P
FWD
REV
P
Rev
Switch
P
Fwd Output and
Rev Injection
-20dB T.P.
Fwd Output and
Rev Injection
-20dB T.P.
Rev Input
-20dB T.P.
Rev Input
-20dB T.P.
FWD
REV
P
Rev
Switch
P
Rev Input
-20dB T.P.
Fwd Output and
Rev Injection
-20dB T.P.
Net
Board
ISEQ
P
Forward
Splitter
(PDD)
Reverse
(PDD)
Input from
Receiver