Digital Link DL3100 Guia do Utilizador Página 85

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Monitoring and Managing the DL3100 5-11
5
¥ CA (data Communications equipment Available)
On indicates that the DL3100 DSU is prepared to send and receive data.
¥ TA (data Terminal equipment Available)
On indicates that the DTE is prepared to send and receive data.
¥ LA (Loopback Circuit A)
This signal is provided to the DL3100 from the DTE.
On indicates that the DTE is requesting a loopback.
¥ LB (Loopback Circuit B)
This signal is provided to the DL3100 from the DTE.
On indicates that the DTE is requesting a loopback.
The LA and LB signals combine to provide one of three diagnostic
loopback modes:
LB=0, LA=0 no loopback
LB=1, LA=1 local DTE loopback
LB=0, LA=1 local line loopback
LB=1, LA=0 remote line loopback
A Ò1Ó indicates activation of the signal, and a Ò0Ó indicates
deactivation of the signal.
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