178 CHAPTER 5: PATHBUILDER S330 DIAGNOSTICS AND PERFORMANCE STATISTICS
Working with History
Alarms
All alarms and information events are captured and kept in an alarm history file in
the PathBuilder S330/S310. This file can hold up to 300 events; it fills on a
first-in/first-out basis. We recommend that you routinely view the alarm history file
before events are lost. We also recommend that you print the file for comparison
with previous history files and entry into your maintenance log.
Viewing and Printing History Alarms
To view and print an alarm history, follow these steps:
1 From the Main menu, select [3] Fault Management to display the Fault
Management menu shown in Figure 133.
2 Select [3] Display History Alarms to view the alarm history. Figure 135 shows a
sample alarm history.
Figure 135 Sample Alarm History Display
If the history file cannot be displayed on one page, the Display History Alarm
screen will include a prompt to press [n] for the next page or press [p] for the
previous page.
3 Use the print screen or other printing feature of your NMS station to print out
each page of the history file.
4 Compare the printouts to your most previous records to see if there are any
obvious trends, such as more frequent alarms of a certain type, which might
require troubleshooting.
Clearing History Alarms
After you have printed the alarm history, you should clear the alarms so that they
will no longer take up space in the alarm history file. To do this, follow these steps:
1 Return to the Fault Management menu.
2 Select [4] Clear History Alarms.
3 Enter y in response to the confirmation prompt to clear the history alarms.
