EXFO FTB-635 Wideband Copper and DSL Test Module - Manual (Page 292)

Impulse Tests
284 FTB-635
Impulse Duration
Disruption
On the Disruption page, the test histogram plots Disruption (y-axis) vs.
Minutes (x-axis), that is the amount of time each minute (depending on
plot interval) was disrupted by impulse events. The page also records the
Elapsed Time, Total Disruption, and pass/fail status.The test displays and
updates results in real time, for the length of time set in Test Duration or
less, if you stop the test. The last valid results then remain displayed.
To access the Disruption page:
1. From the Copper main menu Test Groups, select Impulse test
.
2. From the Tests menu, select Impulse Duration to open the page, then
tap the Disruption tab to start the test.
3. Use the graph controls to maneuver the graph. Refer to Graph Controls
on page 19 for more information.