DM16E1 / DM4E1 Operation and Installation Manual - 204-4001-19
51
−
On / Off: Current signal status.
−
Forced On: Indicates that the signal has been disabled by configuration. The value of this signal
is taken to be always ON.
•
CT113 and CT128: If the clock is active, according to the configuration, clock status shows as OK
or FAIL. If the clock is not active, Ignored is shown. In the absence of any of the selected clocks, the
equipment uses the regenerated clock (CT115) instead.
5.7.3. Tests
LDL activation generates a change only in the Test Function field, which switches from None to Running
LDL.
When BERT is activated (Start BERT option), the additional fields shown in figure below are visible:
#
-------------------------------------------------------------------------
#
DataCom Telematica - DM16E1 Multiplexer
#
/local/test/ports/V35
#
-------------------------------------------------------------------------
#
Test functions
#
Slot 4 - Port 01 - V.35 Interface
#
#
Test Function :[ Running BERT ]
#
Current BERT Status :[ Bit Error ]
#
Test Time :[ 00:00:08 ] (hh.mm.ss)
#
Errored Time :[ 00:00:08 ] (hh.mm.ss)
#
#
1 - None
#
2 - Start LDL
#
3 - Start BERT
#
4 - Insert BERT Error
#
5 - Reset BERT Timer
#
6 - Clear Error Counter
#
Option: [ ]
#
-------------------------------------------------------------------------
#
<ESC> Return to Previous Menu
#
<PgUp> Pre[V]ious Card [N]ext Card <PgDn>
#
-------------------------------------------------------------------------
BERT is always directed to the aggregate, using the clock selected at the V.35 interface.
This test can be used as a reference to monitor problems in the aggregate channel in two units where the
V.35 is not used for data. To test a channel using BERT, select 32 channels for the V.35 interface and use
the internal clock (2048kHz E1 AIS Ref. Clock) at one end and the regenerated clock (CT115) at the other,
closing the clock circuit.
V.35 test menu messages:
•
Current BERT Status: Current BERT status may be shown as:
−
OK: V.35 tributary is synchronized with the BERT 511 sequence inserted into the remote unit.
−
Bit Error: The unit did not detect a BERT 511 sequence.
•
Test Time, Errored Time: Indicate the total BERT test time and the total error time in the test
pattern. These counters can be reset individually through the options Reset BERT timer and Clear Error
Counter, respectively.
•
Insert BERT Error: Inserts an error in the generated BERT 511 sequence.
•
Reset BERT Timer: Resets the total test time, summed in the Test Time field.
•
Clear Error Counter: Resets the test error time counter (Errored Timer field).
