Motorola SG4-DRT-2X Instruções de Operação descarregar pdf (Página 44)

3-16 Bench Setup and Operation

SG4000 Installation and Operation Manual

Figure 3-15 illustrates the forward redundant segmented 2X board. Jumper J5 is shown in the

normal default position that enables signal flow to each output connector. When configuring for

a single output, move

J5 to the left position, thereby terminating output connector J6 (OUT 2).

Figure 3-15

Forward redundant segmented 2X board

OUT 1

SEC RX PRI RX

OUT 2

TERM NORM

Figure 3-16 illustrates the forward redundant segmented 2X signal flow. Loss is measured at

870 MHz.

Figure 3-16

Forward redundant segmented 2X – signal flow

Loss = 8.7 dB

-4.5 dB

-4.0 dB

Out 2

Out 1

-0.5 dB

Rx Pri

Rx Sec

To set up the forward redundant segmented 2X option:

1 Confirm that SG4-R/* receivers are installed in lid optics slots 1, 2, 7, and 8.

2 Confirm that two forward redundant segmented 2X boards are installed in the forward

configuration board locations 1 and 4, as illustrated in Figure 3-14.

3 Install an RF cable from the SG4-R/* in lid optics slot 1 to the primary input of the forward

redundant segmented 2X board in configuration location 1.

4 Install an RF cable from the SG4-R/* in lid optics slot 2 to the secondary input of the same

configuration board.

5 Install an RF cable from the SG4-R/* in lid optics slot 7 to the primary input of the forward

redundant segmented 2X board in configuration location 4.

6 Install an RF cable from the SG4-R/* in lid optics slot 8 to the secondary input of the same

configuration board.

The RF cables should be approximately five inches long and have black boots on the

connector signifying forward path.

7 Connect the appropriate forward RF cables from the RF modules to each forward redundant

segmented 2X board.

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Motorola SG4-DRT-2X Instruções de Operação Página 44