88
208495 REV B
Operations Manual, HPA2, Compact Outdoor SSPA
Figure 9-18: 1:1 Redundant System with RS-485 Half Duplex Communication
&
CONTROL
MONITOR
J4
J3
OUTPUT SAMPLE
J3
OUTPUT SAMPLE
A B
F
A
B
F
LINK
LINK
J5
J5
A
B
C
D
E
F
1
2
4
3
SSPA 1
SSPA 2
E
C
C
E
F
F
RF OUTPUT
SWITCH
&
CONTROL
MONITOR
J4
LINK
CABLE
SWITCH CABLE
T
E
U
F
TX +
TX - RX +
RX -
T
E
U
F
TX +
TX -
RX +
RX -
+
-
SWITCH
J6
A2 (J6)
A1 (J6)
SWITCH
J6