Motorola SG4-DRT-2X Instruções de Operação Página 37

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Bench Setup and Operation 3-9
SG4000 Installation and Operation Manual
Figure 3-8 illustrates the forward redundant-split board. Jumpers J7 and J8 are shown in the
normal default position that enables signal flow to each output connector. When configuring for
three outputs, move
J7 to the left position, thereby terminating output connector J5 (OUT 4).
When configuring for two outputs, move
J8 to the right position, thereby terminating output
connector
J6 (OUT 3).
Figure 3-8
Forward redundant-split board
PRI
C3
C17
C20
C10
C19
R1
R3
R17
D2
J4
Q3
R13
R11
R12
R10
R14
R15
R5
C14
C2
C7
Q1
Q2
D1
J8
J6
T1 T2
T3
C9
R8
R7
R9
R4
C16
C15
C13
C12
C5
C6
J10
J7
J5
U1
C8
C11
C18
C4
R2
R6
J3
J9
OUT 2
OUT
1
OUT
4
OUT 3
SEC
Figure 3-9 illustrates the signal flow through the forward redundant-split board. Loss is
measured at 870 MHz.
Figure 3-9
Forward redundant-split board – signal flow
Loss = 8.7 dB
J7
J8
-0.5 dB
-4.0 dB
-4.0 dB
-4.0 dB
Rx Pri
Rx Sec
Out 2
Out 1
Out 4
Out 3
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