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Chapter 5 - Troubleshooting and Diagnostics HCD-E1
Installation & Operation Manual
5-30 Diagnostic Tests 01/01/01 08:15
To display the current parameter values, and change them as necessary, use
the following procedure:
Step Action Key Result
1 Check/configure your channel according to
Chapter 3 (see
Checking the Current
Operating Configuration in Section 3.5 or
General Configuration Procedure in
Section 3.6).
2 Bring the cursor to the left-hand field in the
top row (if it is not already there).
CURSOR
3 Scroll to display BERT PRM in the top row. SCROLL
4 Move the cursor to the right-hand field and
scroll to display the desired channel.
CURSOR,
SCROLL
The right-hand field of the top row
shows CH1 or CH2
5 Bring the cursor to the left-hand field in the
second row, and scroll to display PATTERN.
CURSOR,
SCROLL
The right-hand field in the second
row displays the current value.
6 Move the cursor to the right-hand field and
scroll to display the desired pattern.
CURSOR,
SCROLL
7 Bring the cursor to the left-hand field in the
second row, and scroll to display ERR RATE.
CURSOR,
SCROLL
The right-hand field in the second
row displays the current value.
8 Move the cursor to the right-hand field and
scroll to display the desired error rate. For
selection, consult Table 3-6 in Chapter 3
and DEF BERT command in Chapter 4.
When done, press ENTER.
CURSOR,
SCROLL
ENTER
9 Prior to activating the BERT test on the data
channel, activate one of the following
loopbacks: LP R R CH on the selected
channel, LP LOCAL LINE, or LP L HRPT (if
your HCD-E1 is configured as central), as
described in the above section (Operating
Loopbacks from the Front Panel).
The TST indicator lights up.
10 Bring the cursor to the left field of the top
row and scroll to display TEST OPTION.
CURSOR,
SCROLL
11 Bring the cursor to the right field in the top
row, and scroll to display your channel
number (CH1 or CH2).
CURSOR,
SCROLL
12 Bring the cursor to the left field of the
second row and scroll to display BERT.
CURSOR,
SCROLL
13 Bring the cursor to the rightmost field of in
the second row , select ON and press
ENTER to perform the BERT test.
CURSOR,
SCROLL,
ENTER
In the middle field of the second
row, HCD-E1 displays the test result:
BAD or GOOD.
14 To inject errors, press ENTER (to make sure
that error injection is enabled, see step 8).
ENTER GOOD turns to BAD and the letter I
appears next to it.
15 If you want to repeat error injections,
perform step 14.
ENTER BAD turns to GOOD, and the letter I
next to it disappears.