The Front Panel 5-7
5
Running a TEST PATTERN
Also refer to Running the Pattern Test on page 6-25.
To run TEST PATTERN:
1. Select TEST PATTERN and press ENTER to access the patterns submenu.
2. Press ENTER to open the TEST PTRN <P1 ... P24, AUX, or FULL>
submenu.
3. Select the pattern (use the up or down keys).
4. Press ENTER to start the test.
5. Press ENTER again at the system prompt to conÞrm this test.
The DSU/CSU responds with the message:
PATTRN SEARCHING
The DSU/CSU sends the chosen pattern and attempt to synchronize with
the same pattern returning from the remote DSU/CSU.
When the local DSU/CSU achieves a signal lock from the remote DSU/CSU,
it displays:
PATTRN 0
When it detects errors in the received pattern, it displays the number of
received errors. The error count starts at 0 and can reach a ceiling of 65,535.
If the pattern lock is lost the DSU/CSU resumes searching.
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