Motorola SG4-DRT-2X Instruções de Operação descarregar pdf (Página 48)

3-20 Bench Setup and Operation

SG4000 Installation and Operation Manual

Figure 3-18 illustrates the forward segmented 4X board.

Figure 3-18

Forward segmented 4X board

Figure 3-19 illustrates the signal flow through the forward segmented 4X board. Loss is

measured at 870 MHz.

Figure 3-19

Forward segmented 4X – signal flow

Out

Loss = 2.7 dB

To set up the forward segmented 4X option:

1 Confirm that an SG4-R/* receiver is installed in lid optics slots 1, 2, 7, and 8.

2 Confirm that two forward segment 4X boards are installed in forward configuration board

locations 1 and 4, as illustrated in Figure 3-17.

3 Connect an RF cable from each SG4-R/* to the inputs of the forward segmented 4X boards.

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

connector signifying the forward path.

4 Connect the appropriate forward RF cables from the SG4-RF modules to the forward

segmented 4X boards.

In a typical installation, the RF modules in Ports 1 and 3 are connected to the forward

segment 4X board in configuration location 1. The RF modules in Ports 4 and 6 are

connected to the forward segment 4X board in configuration location 4.

5 Ensure that the PIC cable is properly connected to the lid router board and center power

distribution board in the housing base.

6 Route the fiber service cable into the node and fiber tray.

7 Measure the optical input power on the forward fiber pigtails, leaving enough length to

connect them to the receiver bulkhead connectors.

8 Connect the service cable pigtails to the receiver bulkhead connectors.

9 Apply power to the node (see Powering the Node in this section). Allow five to ten seconds

for the system self-diagnosis to complete.

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Motorola SG4-DRT-2X Instruções de Operação Página 48