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QUIKCONNECT MDSL LINE DRIVER
• ER: blinks ON/OFF after a 511/511E test has timed out. See
Section 5.3.3
for
more information.
ER flashes once to indicate that a CRC error has occurred (during normal
operation) or bit errors have occurred (during 511/511E tests).
Only at power up, ER blinks once every 200 ms if the DTE rate is set to an
unsupported settings.
• TM: glows yellow to indicate that the QuikConnect Line Driver has been
placed in test mode. The unit can be placed in test mode by the local user or
by the remote user.
• NS: (No Signal) glows red to indicate that the local QuikConnect Line Driver
is not connected with the remote QuikConnect Line Driver.
5.3 Test Modes
The QuikConnect mDSL Line Driver offers two proprietary loopback test modes,
plus a built-in V.52 BER test-pattern generator to evaluate the condition of the
modems and the communication link. These tests can be activated physically from
the front panel or via the DTE interface.
5.3.1 O
VERVIEW
Figure 5-2 shows the major elements used in the loopback and pattern tests
available in the Line Driver. Each block has several functions. Following Figure 5-2
are descriptions that show how the elements are used during test modes.
Figure 5-2. The major elements used in the loopback and pattern tests.