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ACCULINK 317x E1 DSU/CSU
4-20 December 1996 3170-A2-GB20-20
4. From the Loopback Abort screen, press the
desired Function key to abort All or one specific
loopback test. Use the scroll keys, if necessary
.
F1
Loopback:
A
bort
All LLB PLB
F2
F3
If you select ALL, LLB, PLB, DLB, or RLB, skip
Step 5.
NOTE
DLB does not appear when the
DTE Drop/Insert interface is
disabled.
5. From the Abort screen, press the Function key that
corresponds to the port for which you want to
abort the test. Use the scroll keys, if necessary
.
F1
Abort:
Test Name
Prt1 Prt2 Prt3
F2
F3
When
abort is complete, the message
Command
Complete
appears on the Abort screen.
NOTE
Be careful when selecting a
specific loopback test to abort. If
you mistakenly choose to abort a
loopback test that is not currently
running, a Command Complete
message will still display and the
loopback that is currently active
will still be running. You can use
the TStat branch of the menu to
view the test status to determine if
the abort was successful.
Test Patterns
Use the T
est Pattern commands to send and abort
transmission of test patterns on the E1 DSU/CSU
network. A
vailable test patterns are:
• 511 – A pseudo-random bit sequence (PRBS) that is
511 bits long (on the data ports only). This is a
PRBS 2
9
–1 test.
• 1-in-8 – A test pattern consisting of a one (1)
followed by seven zeros (on the network only).
• QRSS
– A quasi-random signal source
approximating live data that can be monitored for
logic errors (on the data ports only).
Sending Test Patterns
Use
the Send command to start transmission of a test
pattern.
Only one test pattern can be active at a time on one
port. T
able 4-9 lists the valid send test pattern
combinations. V
alid combinations are identified by YES.
T
o send a test pattern,
1.
Press F2 to select T
est from the top-level menu
screen.
2. From the T
est screen, press F3 to select Ptrns.
F1
Test:
Rlpbk Lpbk Ptrns
F2
F3
3.
From the Patterns screen, press F2 to select Send.
F1
Patterns:
Abort Send Mon
F2
F3