Far End Tests; Remote Digital Loopback (Rdl); Rdl With Test Pattern (Tp) - ADTRAN DSU 5600 User Manual

FAR END TESTS

Remote Digital Loopback (RDL)

RDL with Test Pattern (TP)

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When the remote digital loopback (RDL) test is initiated at the
local DSU 5600, it commands the remote DSU into loopback with
the industry standard V.54 loopback pattern. The loopback point
and the signal paths for the remote DSU are the same as the
Loop Only test for a local DSU (Figure 3-4). This loopback test is
performed with data from the terminal or test equipment.
To initiate the RDL test, perform the following steps:
1. Press the Select switch five times to turn On the RDL test
indicator.
2. Press Test while the test indicator is On. The RDL LED
Flashes during initialization of the test and turns On solid
once the test is in progress.
To terminate this test, press Test.
When the RDL with TP test is initiated at the local DSU 5600, it
commands the remote DSU into loopback with the industry
standard V. 54 loopback pattern. The loopback point and the
signal paths for the remote DSU are the same as the Loop Only
test for a local DSU (Figure 3-4). This loopback test is performed
with data from the internal test pattern generator and error
detector.
To initiate the RDL with TP test, perform the following steps:
1. Press Select six times to turn On both the RDL and PTRN
test indicators.
2. Press Test while these test indicators are On. The RDL and
PTRN LEDs Flash during initialization of the test and turn
On solid once the test is in progress.
To terminate this test, press Test.
DSU 5600 User Manual
Chapter 3. Test Modes
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