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The TSU/TDU/ESU checks the remote loopback activation by detecting a
proper response from the remote end. While waiting for the response, the
display shows Looping. If successful, the display changes to Looped
Up. If unsuccessful, the display shows Failed.
61200142L1-1
REMOTE
The remote loopback causes a V.54 code to be sent to the
far end. The Nx at the far end activates a PORT/LCL
loopback on detection of the V.54 code.
REM V.54 CONT
This loopback causes continuous V.54 code to be sent to
the far end. The Nx at the far end activates a PORT/LCL
loopback upon detection of the V.54 code.
OFF
The loop is deactivated.
511 PATT
Activates the generation of the 511 test pattern.
ON
The pattern check circuitry is enabled and test started.
The test is ended by selecting O
OFF
The pattern generation and check is disabled
DIS 511 RESLT
Displays the results of the 511 test indicated above. The
results are in the form of the number of errored seconds.
The error count can be cleared by pressing the
(
). A bit error may be inserted into the data
Shift + 9
stream by pressing the
Dual Nx56/64 Option Module User Manual
Chapter 3. Operation
.
FF
key.
2
key
Clear
3-13
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