EXFO FTB-8510B Guia Del Usuario página 781

On/Off button allows enabling the test timer. An error message is
displayed and the test timer is not enabled when the provided start
time or stop time is not valid. It is not possible to enable the test timer
while the test is running. When the timer is enabled (On), it is possible
to disable it even when the test is running. This setting is disabled (Off)
by default.
When test timer is enabled, it is possible to manually stop a test case
using the main test case Stop button. However, it is not possible to start
the test case when the Start Time is enabled. An icon is displayed in
the global test status area, in front of the test time, indicating that the
timer is enabled.
The test timer is automatically disabled either when the user manually
stops the test, or when the given stop time or duration has expired.
Note: When using Visual Guardian Lite for remote control, the timer
configuration values will be based on the PC clock and not on the FTB-8100
Series. Make sure to consider the time zone differential if it exists between
the PC and the FTB-8100 Series.
SONET/SDH Application
Summary Tabs
Test Summary
131