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In Hayes mode only, the
RDLST can be initiated using the
command &T7 (AT &T7). In any
mode, the RDLST test can be
initiated from the front panel as
follows:
Both modems must be on-line.
From screen 2 of the MAIN MENU,
select RMT, and then select TEST.
From the REMOTE TEST menu,
select RDLST.
PATTERN
GENERATOR
PATTERN
DETECTOR
LOCAL MODEM
Fig. 7-7. Remote Digital Loopback Self Test.
TRANSMITTER
RECEIVER
CHAPTER 7: Diagnostics
From the RDL SELFTEST
screen, select ON to activate the
test. The status screen will be
displayed as the test is being
conducted. If "ER" is present on
the status screen, the modem is
detecting errors. If numerous
errors are detected, steps should be
taken to try to identify their source.
TRANSMITTER
REMOTE MODEM
RECEIVER
155
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