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2-WIRE SHORT-RANGE DSL LINE DRIVER (MDSL)
6.3.4 U
SING THE
V.52 (BER) T
EST
-P
ATTERN
G
ENERATOR
To use the V.52 BER tests in conjunction with the Remote Digital Loopback tests,
follow these instructions:
1. Locate the Remote Loop/511 and Remote Loop/511E toggle switch on the
Line Driver’s front panel and move it DOWN. This activates the Remote Loop
with V.52 BER and transmits a “511” test pattern into the loop. If any errors
are present, the local Line Driver’s red “ER” LED will blink sporadically.
2. If the above test indicates no errors are present, move the test switch V.52
toggle switch UP, activating the 511/E test with intentional errors present. If
the test is working properly, the local Line Driver’s red ER LED will blink. A
successful 511/E test will confirm that the link is in place, and that the Line
Driver’s built-in 511 generator and detector are working properly.
