Motorola SG4-DRT-2X Instruções de Operação descarregar pdf (Página 35)

Bench Setup and Operation 3-7

SG4000 Installation and Operation Manual

Ensure that the power interconnect cable (PIC) is properly connected from the lid router

board to the center power-distribution board in the node housing base.

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

9 Measure the optical input power on the forward pigtail, leaving enough length to connect it

to the receiver bulkhead connector.

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

for the system self diagnosis to complete.

11 Connect the service cable to the receiver bulkhead connector.

12 Verify that the green LED (ON), located on the top panel of the SG4-R/*, is illuminated to

confirm enable status.

13 Using a voltmeter, test the optical input power to the receiver.

Figure 4-2 illustrates the optical power test point (

FWD T.P.) on the top panel of the SG4-R/*

receiver. The scaled voltage at this test point is 1.0 V/mW.

14 Use an RF meter to measure the RF output level at the receiver −20 dB test point.

For 0 dBm (1.0 mW) input, the receiver output level is approximately 26 dBmV per channel

at 870 MHz. Other output levels are presented in Table 4-2.

15 Select a JXP-* pad from Table 2-2 and insert it into the receiver pad facility.

16 Check all –20 dB test points of the SG4-RF modules connected to the forward split board.

The SG4-RF modules are located in the four corners of the node base, as illustrated in

Figure 3-1.

17 Determine how much output (excess or shortage) is present at the port with the lowest level

and insert the necessary pad into the receiver pad facility.

18 If necessary, adjust level variances between SG4-RF modules by placing a pad at the

particular output pad position.

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 107 108

Sem comentários

Motorola SG4-DRT-2X Instruções de Operação Página 35