Verilink PRISM 4001 (34-00244) Product Manual - Manual (Page 26)

4-6 Terminal Operation PRISM 4001
BERT
The 4001 has an internal 511 pattern generator and compar-
ator. The pattern can be transmitted toward the DDS line/
network or toward the port/DTE interface. The internal
BERT may be activated as described in the following para-
graphs:
BERT
Specifies the direction the BERT signal is sent. The choices
are DDS NETWORK and DTE. Note that the Start Test
field must be used to activate the BERT, this field just spec-
ifies the direction.
T EST L ENGTH
Defines the run-time of test pattern generation and error
accumulation. The choices are 15 min, 30 min, 60 min, 24
Hour, and Continuous.
S TART T EST
Starts the selected test pattern when ENTER in pressed with
the cursor in this field. Once the test has started, TEST IN
PROGRESS appears. To end the test, press ENTER with
STOP TEST highlighted.
R ESET E RRORS
Clears the test error results to zero when ENTER is pressed
with the cursor in this field. The test continues running.
The following fields are for display only. They show the
selected test parameters and the results of these tests:
Pattern Sync: Displays the current state of pattern sync
during a test. If no test is in progress, NO TEST is dis-
played. If a test is active, but the receiver is not in pattern
sync, NO SYNC or SYNC LOST is displayed. If the
receiver is in pattern sync, IN SYNC or SYNC RECOV is
displayed.
Elapsed Time: Displays the amount of time elapsed since
a timed test began or, if completed, the total test time.
Bit Errors: Displays the total number of bit errors detected
since the test began or since error statistics were cleared (up
to 999,999).
Errored Seconds: Displays the number of asynchronous
errored seconds detected since the test began or since error
statistics were last cleared. This parameter includes bit error
seconds and sync loss seconds.
% EFS: Displays a ratio derived from the number of error
free seconds divided by the number of seconds accumulated
in the Elapsed Time field.
Line Fault and Loop Status
NET AND DTE S TATUS
These two fields display the fault status of the network and
the far-end DTE. They indicate current fault conditions.
They do not indicate that alarm thresholds are exceeded.
Status prompts are the same as for the Alarms screen as
shown in Table 4-B on page 4-3.
Near Loops: Displays the loop status of the near element.
Far Loops: Displays the loop status of the far element.
Configuration Screens
The various Configuration screens allow the user to view
and set configuration parameters for the network elements.
Only the installed options are available as menu items.
Figure 4-10 Configuration Screens
To send a new configuration to the 4001, press
ENTER in one of the fields or exit the screen.
The underlined values are the factory default
parameters stored in ROM.
DTE Port
Parameters
(Figure 4-12
on page 4-8) Alarm
Parameters
(Figure 4-13
on page 4-9) Management
Ports
(Figure 4-14
on page 4-10) Network
Parameters
(Figure 4-11
on page 4-7)
Configuration Menu
Dial Backup
Parameters
(Figure 4- 15 on
page 4-11) Summary
(Figure 4-16
on page 4-12)