Paradyne 3160-A2-GB21-50 Test Patterns

ACCULINK 316x DSU/CSU
4-22 January 1997 3160-A2-GB21-50
Test Patterns
Use the Test Pattern commands to send, monitor, and
abort test patterns. Available test patterns are:
•QRSS – A quasi-random signal source
approximating live data that can be monitored for
logic errors (on the network and the data ports).
•1-in-8 – A test pattern consisting of a one (1)
followed by seven zeros (on the network only).
•511 – A pseudo-random bit sequence (PRBS) that is
511 bits long (on the data ports only). This is a
PRBS 29–1 test.
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. Table 4-9 lists the valid send test pattern
combinations. Valid combinations are identified by YES.
To send a test pattern,
1. From the top-level menu screen, select Test.
2. From the Test screen, select Ptrns.
F1
Test:
Rlpbk Lpbk Ptrns
F2 F3
3. From the Patterns screen, select Send.
F1
Patterns:
Abort Send Mon
F2 F3
4. From the Patterns Send screen, press F1 to send a
QRSS pattern, F2 to send a 1-in-8 pattern, F3 to
send a 511 pattern.
F1
Patterns: Send
QRSS 1in8 511
F2 F3
If you send a 1-in-8 pattern, skip Step 5.
5. From the Send screen, press the Function key that
corresponds to network or the port for which you
want to send a test pattern. Use the scroll keys, if
necessary. (NET does not appear for the 511
pattern.)
F1
Send: Name
NET Prt1 Prt2
F2 F3
The Test Started screen appears.
F1
Send: Name and Dest
Test Started
F2 F3
If the DSU/CSU is already sending the test pattern
you selected, the message Already active appears.
If you selected an incompatible test pattern
combination, the message Invld Test Combo
appears. See Table 4-9 for valid combinations.