EXFO FTB-8500 Series for FTB-200 - Manual (Page 357)

System Tabs
Ethernet and Fibre Channel Application 343
Application Preferences

Test Time Display Mode: Allows the selection of the test time mode
displayed in the Logger panel. The default setting is Relative.
Relative displays the time elapsed since the beginning of the test for a
test event.
Absolute displays the date and time of a test event.
Audible Error/Alarm

Mode allows the selection of the audible sound duration. The default
setting is Continuous. Choices are:
Single: Generates an audible sound and stops even if the alarm/error
persists.
Continuous: Generates an audible sound once the alarm/error is
detected and lasts for the alarm/error duration.
Note: The F2 button located on the FTB-200 front panel can be used to stop
(mute) the audible error/alarm.

Enable allows enabling the audible error/alarm. This setting is disabled
by default.