Motorola SG 2000 Instruções de Operação descarregar pdf (Página 24)

Bench Setup 3

-3

AT&T SLW2500 Installation and Operation Manual

Powering the Node

You can conveniently power the SLW2500 by applying 60 Vac or 90 Vac to housing Port 2

(ac port). This port is not used for RF purposes. All ports are rated at 15 amperes maximum and

are fused with common, blade-type 20 ampere automotive fuses. The 10 ampere fuse protects the

dc power supply wiring and can also be used to disconnect ac power from the power supply.

Figure 3-4 illustrates the ac fuse locations in the RF chassis of the SLW2500.

In addition to providing overcurrent protection, fuse locations also determine the paths for ac

bypassing through the housing.

Figure 3-3 diagrams fuse configurations for ac and dc powering:

Figure 3-3

Fuse configuration

RF chassis

Housing

ac port

Port 1

Port 2

Port 3Port 1

OUT

Unused

Port 2

Port 4

Port 4 Port 3

20 Amp

10 Amp

20 Amp

35 Amp

20 Amp

FTEC

ac to power supply in lid

(only one power supply possible)

Table 3-1 identifies and describes the ac fuse options:

Table 3-1

AC fuses

Fuse Function Rating Type

F1 Passes ac to/from Port IN of node housing base. 20 A, 32 Vdc Auto, plug-in, fast blow

F2 Passes ac to/from Port OUT of node housing base. 20 A, 32 Vdc Auto, plug-in, fast blow

F3 Passes ac to/from Port

3 of node housing base. 20 A, 32 Vdc Auto, plug-in, fast blow

F4 Passes ac power to/from Port 1 of the node housing base. 20 A, 32 Vdc Auto, plug-in, fast blow

F5 Passes ac from the ac only port (Port 2 of the node housing

base).

10 A, 32 Vac Auto, plug-in, fast blow

F6 FTEC

F7 This fuse delivers ac power to/from all ports. It is always required

except when power from the ac input (port 2) must be blocked at

this location.

35 A, 32 Vdc Auto, plug-in, fast blow

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 52 53

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Motorola SG 2000 Instruções de Operação Página 24

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