Quick Eagle Networks DL3800E - Manual (Page 102)

5-14 DL3800E Inverse Multiplexer User’s Guide — July 9, 2001
5
DTE T
ESTS
Only one loopback can be initiated through the DTE TESTS MENU, a bi-
directional DTE/NET Loopback.
To access the DTE TESTS MENU from the TEST MENU, press Enter when
DTE TESTS appears in the display.
When in the DTE TEST MENU, pressing Enter accesses the DTE/NET
Loopback.
DTE/NET Loopback
The DTE/NET LOOPBACK is a bi-directional loopback that loops the
received DTE signal back to the DTE and the signal from the E1 Main
Board back towards the E1 Main Board. This loopback is used to verify the
operation of the DTE and associated cabling, the DTE Board, and the link
between the DTE Board and the E1 Main Board.
To initiate a DTE/NET LOOP from the DL3800E unit front panel, press
Enter
when DTE/NET LOOP appears in the display.
When a DTE/DTE LOOP is in operation, a “plus sign” will appear after
DTE/NET LOOP in the display:
DTE/Net Loop +
To end the loopback, press Enter again while still in the DTE/NET
LOOPBACK MENU.
To cancel a test or loopback from any place in the Menu, press the END
TEST
button combination. However, this will cancel all tests and
loopbacks currently in progress.
Only one test can be performed at a time. To start a new test, the previous
test must first be terminated.
Use the Exit button to go out of the TEST MENU. Use the other buttons to
go into the MONITOR or the CONFIGURATION MENUS to view the
performance information or view and change the configuration of the unit
while the test is in progress.
While the test is active, the front panel TEST LED is on, reminding you
that the unit is out of normal service condition. The test is terminated by
pressing the END TEST button combination at any point in the menus.
When this combination is pressed, the currently active test is canceled and
the front panel display returns to the TEST MENU to the test that was just
terminated.