ADTRAN TSU LT, Руководство пользователя

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TSU LT User Manual Chapter 7 Test Menu
61203060L1-1A © 2003 ADTRAN, Inc. 51
Test Pattern
Selects the test pattern and initiates the transmission of the pattern. There are five patterns available (see
below). End testing by selecting
N
O
P
ATTERN
.
CLR Errors
CLR E
RRORS
has two functions. First, it clears out the 511 error total when you press
E
NTER
. Second, it
displays a total of the 511 errors; that is, if 511 errors are being received, the display updates accordingly.
This function is useful in testing end-to-end integrity of the network. To do this, first, loop up the far end
TSU LT, and send a 511 pattern from the local TSU LT. Then, view the
CLR E
RRORS
screen to determine
if the link is functioning properly by verifying that no errors are being counted.
Insert 511 Errors
When running a 511 pattern test, press the
E
NTER
key to insert an error into the 511 pattern.
RUN SELF-TEST
Use this menu to execute an internal self-test. This is the same self-test that is automatically performed at
power-up. After displaying
I
NITIALIZING
,
the LCD shows the results (including failures) of the self-test (see
Figure 7-3).
Figure 7-3. Self Test Results Screen
1:8 ALL DS0s Generates a 1 in 8 pattern in all DS0s.
511 Active DS0s
Generates a 511 test pattern and inserts the pattern into currently active channels.
All Zeros Generates an all zero's pattern in every channel.
All Ones
Generates an all one’s pattern in every channel.