Black Box 32144 Manual page 58

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MODEM 32144
7.8 Local Modem Diagnostics
Local modem diagnostics are for
testing the modem and its adjoin-
ing system. These tests are accessed
from the main menu and are easily
performed if the modem is
attached to DTE or an external
BERT.
TRANSMITTER
RECEIVER
LOCAL MODEM
144
Fig. 7-1. Analog Loopback Test.
7.8.1 A
L
NALOG
OOPBACK
Analog loopback testing allows the
user to test the local modem and its
associated terminal independently
from the telephone interface and
the remote modem. Fig. 7-1 shows
the connections automatically
made during the test.
DATA TERMINAL EQUIPMENT
(DTE) AT LOCAL SITE
(ALB) T
EST

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