Allied-telesis AT-MR820TR Manual de usuario descargar pdf (Pagina 47)

AT-MR420TR and AT-MR820TR Installation Guide

the termination switch. Figure 14 shows the location of the two-

position 50 Ω Terminator switch. The switch is either ON (the default)

or OFF.

Figure 14: Terminator Switch

OFF (disabled) — When installing a hub at an intermediate point of a

thinnet cable, a BNC-T connector must be used to connect the cable to

the backbone port and the terminator switch must be disabled. See

Figure 14.

ON (enabled) — When installing a hub at the end of the cable, if you

need to remove the BNC-T connector and the terminator, the backbone

port must be connected directly to the thinnet cable. The terminator

switch must be enabled. This provides the 50 ohm termination that is

required.

❑ Use the OFF position to disable termination if you are

installing a link segment with a BNC-T connector on this port.

❑ Use the ON position to enable termination if you are installing

a link segment without a BNC-T connector at this port, and if

the unit is at the end of the cable.

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Allied-telesis AT-MR820TR Manual de usuario Pagina 47