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68
SSxDSL-5 IDSL Module
B. At COMMAND, select the message to send. To loopback
the full 2B+D (144k) pipe, select LOOP2BD (F3). After
selecting the proper message, press F1 to send.
C. Watch the receive command at the bottom of the screen
(RX COMMAND). When the repeater loops up, the message
should be displayed. If not, the repeater has not successfully
looped up.
6. After looping the repeater, run a BER test to check for bit errors.
Press ESC and select BERT AND RESULTS. The PAT SYNC
LED should be green, indicating that the test set has achieved
pattern synchronization. If the test runs clean and there are no
errors, the entire 2B1Q span has been verified. If the test set
is recording bit errors, return to the EOC CONTROL screen
and try looping each U-repeater on the span to sectionize the
fault.
7. When finished testing the NT1, loop it down and return it to
the normal state. Enter EOC CONTROL then at COMMAND,
select NORMAL (F2) and press SEND (F1). Always remember
to send a NORMAL command when finished testing.
Содержание SSxDSL-5M
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