ADTRAN TSU 120e - Manual (Page 97)

Chapter 7. Test Menu
61202129L1-1 TSU 120 User Manual 7-9
Port Test Menu Items for 0.1 Nx56/64
0.1 Nx56/64 is the base Nx interface. It offers the following test
functions:
DTE LOOPBK
This initiates a loopback. The following options are available:
The TSU 120 checks the remote loopback activation by detecting
a proper response from the remote end. While waiting for the re-
sponse, the display shows Looping. If successful, the display
changes to
L OOPED -U P
. If unsuccessful, the display shows F AILED
.
511 PATTERN
This activates the generation of the 511 test pattern. The follow-
ing options are available:
511 RESULTS
This displays the results of the 511 test indicated in the 511
option. The results are in the form of the number of errored sec-
onds. The error count can be cleared by pressing
Clear (Shift+9) .
PRT / LCL The Nx port activates both a Local
loopback (back toward the DTE) and a Port
loopback when either is invoked.
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 upon
detection of the V.54 code.
OFF The loop is deactivated.
ON The pattern check circuitry is enabled and a
test started. The test is ended by selecting
OFF .
OFF The pattern generation and check is
disabled.