ADTRAN TSU 120, User Manual

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Chapter 3. Operation
61200.129L1-1 TSU 120 User Manual
87
*
Figure 3-20
Pattern Results Display
ES The number of errored seconds with
one or more errors per second.
SES
The number of severely errored
seconds with more than 320 errors per
second.
SES The number of seconds with more
than 320 bit errors
*SYNC Indicates if pattern sync is, (yes) or is
not, (no) valid. The asterisk (*)
indicates if pattern sync has been lost
since the start of testing.
Results can be cleared by pressing Clear (shift + 9).
The results are accumulated until the test pattern is set
to None or Clear’d.
The use of TST DS0s for testing can be very useful,
particularly in Fractional T1 applications. An end to end
test can be run on the Fractional DS0s by 1) setting for
Map B the TST in the same DS0 as used by Map A to
receive data from the 0.1 Nx56/64 port, and 2) by looping
the far end using a V.54 loopback code on the 0.1 Nx56/64
port. In addition, a single DS0 could be used for continu-
ous testing while other DS0s are passing normal data. This
will also provide an end-to-end check on the entire link. Set
each end-to-send QRSS in TST DS0s (using 1 DS0) and
occasionally view the results on the Pattern Result menu
selection.