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HCD-E1 Installation & Operation Manual Chapter 5 - Troubleshooting and Diagnostics
01/01/01 08:15 Diagnostic Tests 5-29
Step Action Key Result
7 Bring the cursor to the left-hand field in
the second row, and scroll to display the
desired type of loopback:
LOCAL CH (data channel local
loopback)
REM CH (data channel remote
loopback)
REM REM CH (data channel remote
remote loopback)
BERT (BERT test)
INBAND LOOP (in-band loopback)
CURSOR,
SCROLL
The second row shows the current state
of the selected test, OFF or ON.
8 To enable the activation of the H-RPT
loop (available only for HCD-E1
configured as central), bring the cursor
to the right-hand field in the top row,
and scroll to display HRPT.
CURSOR,
SCROLL
The second row displays LOCAL HRPT.
9 To change the test state, bring the
cursor to the right-hand field in the
second row, and scroll to display the
desired state (ON or OFF).
CURSOR,
SCROLL
The second row shows the new state of
the selected test (for instance, ON).
10 Press ENTER to activate or deactivate
the displayed test.
The TST indicator lights if the test is
activated, or goes off if no more tests
are active.
To deactivate all the tests activated from this unit, simultaneously, perform
steps 1, 2, 3 above: in step 3 select OFF, and then press ENTER. The
TST LED should turn off.
Operating BERT
from the Front
Panel
To activate the BERT test, you must first select the BERT parameters for the
appropriate channel (see Table 3-6 in Chapter 3 for the LCD menu
description and the DEF BERT command in Chapter 4 for additional
information). You must also remember that you can perform this test only on
a connected channel (at least one HDSL time slot must be assigned to this
channel).