Motorola SG 2000 用户手册
5 - 8 O p e r a t i o n
SG 20 00 Ins tal la tion and O pera tion M anua l
If you are using a single DS-SG2-DRT-2X/A transmitter, it must be installed in the optical
transmitter A position. A JXP-5A (5 dB) pad must be installed in the pad facility at the input of both
the A and B transmitter locations. With this transmitter, the SG2 is configured with the return path
module/split (SG2-RPM/S). Return signals from two of the four node ports are fed to one RF input
of the transmitter while the remaining two return signals are fed to the second RF input as illustrated
in Figure 5-11:
transmitter A position. A JXP-5A (5 dB) pad must be installed in the pad facility at the input of both
the A and B transmitter locations. With this transmitter, the SG2 is configured with the return path
module/split (SG2-RPM/S). Return signals from two of the four node ports are fed to one RF input
of the transmitter while the remaining two return signals are fed to the second RF input as illustrated
in Figure 5-11:
F i g u r e 5 - 1 1
D S - S G 2 - D R T - 2 X / A s p l i t r e t u r n
D S - S G 2 - D R T - 2 X / A s p l i t r e t u r n
SG2-RPM/S
SG2-RPLPF
Optional
transmitter
B
TP
TP
JXP
JXP
BASE
LID
Status
monitor
JXP
Ingress
TP
TP
H
L
LP filter
LP filter
Using a DS-SG2-DRT-2X/A transmitter in conjunction with an optional second transmitter (B)
provides return redundancy as illustrated in Figure 5-12. Installing a redundant B transmitter requires
you to remove the JXPs that are installed before the input to the transmitter and replace it with a
special adapter in order to route the signals properly.
provides return redundancy as illustrated in Figure 5-12. Installing a redundant B transmitter requires
you to remove the JXPs that are installed before the input to the transmitter and replace it with a
special adapter in order to route the signals properly.
F i g u r e 5 - 1 2
D S - S G 2 - D R T - 2 X / A r e d u n d a n t r e t u r n
D S - S G 2 - D R T - 2 X / A r e d u n d a n t r e t u r n
SG2-RPM/S
SG2-RPLPF
TP
TP
BASE
LID
Status
monitor
JXP
Ingress
TP
TP
H
L
LP filter
LP filter
Optional
transmitter
A
Transmitter
B