Black Box Modem MD885A-R3 Manual do Utilizador descarregar pdf (Página 119)

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Modem 34336

7.7 Local Modem Diagnostics

Local modem diagnostics are for testing the Modem and its adjoining system.

The tests are accessed from the main menu and are easily performed if the

Modem is attached to DTE or an external BERT.

7.7.1 A

NALOG

OOPBACK

(ALB) T

EST

Analog loopback testing allows you to test the local modem and its associated

terminal independently from the telephone interface and the remote

modem. Figure 7-1 shows the connections automatically made during the

test.

Figure 7-1. Analog Loopback Test.

LOCAL MODEM

DATA TERMINAL EQUIPMENT

(DTE) AT LOCAL SITE

TRANSMITTER

RECEIVER

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Black Box Modem MD885A-R3 Manual do Utilizador Página 119