ADTRAN Cable T1 ESF CSU ACE, Руководство пользователя

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Chapter 3. Operation
61203025L1-1 T1 ESF CSU ACE User Manual 3-27
3)TEST PATTERN, Submenu of 4)TEST
Sets the pattern for the test and initiates the transmission of the
pattern. The test is terminated by selecting None. There are four
patterns available:
NO PATTERN Terminates pattern generation.
ALL ZEROS Generates an all zeros pattern in every
channel.
1:8 ALL DS0s Generates a 1 in 8 pattern in all DS0s.
ALL ONES Generates an all ones pattern in every
channel.
4)RUN SELFTEST, Submenu of 4)TEST
Use this menu selection to execute an internal self test. This is the
same self test that is performed automatically at power-up. The
results of the self tests are displayed in the LCD (see Figure 3-22).
When a loopback method is selected, the T1 ESF CSU ACE displays
LOOPING in the top right corner of the LCD and the yellow LOOP-
BACK LED is turned on. When the T1 ESF CSU ACE determines that
the far-end T1 ESF CSU ACE has looped up, the T1 ESF CSU ACE dis-
plays LOOPED. If the T1 ESF CSU ACE does not recognize the remote
T1 ESF CSU ACE looped up after about 10 seconds, the T1 ESF CSU
ACE sends the appropriate loop-down code and displays FAILED, and
the LOOPBACK LED is turned off.
Excessive errors on the T1 line can cause this failure. The FDL loopbacks
fail if the FDL is not intact from one end point to the other. FDL loopbacks
are valid only in the ESF framing mode.
Use up and down
SCROLL
keys
To select, for example, 1:8 ALL DS0s.
Press Enter To record selection.
Results The T1 ESF CSU ACE starts to gen-
erate a 1:8 test pattern and inserts the
pattern into all DS0s.
Select None To end the test.