Tektronix ATEC TekRanger 2, User Manual

Page: 90 / 174

Testing A Fiber
2–22 TFS3031 TekRanger/TekRanger 2 User Manual
Step 4. Push the
SELECT
button to choose the Zoom option.
Step 5. Size the zoom window to encompass the event or area in
question. The smaller the zoom window the faster the screen
updates after zooming.
If necessary, refer to page 2–19 for information about sizing
the zoom window.
Step 6. Push the
Zoom On
softkey. The area within the zoom
window expands to fill the screen.
To begin a real-time test, hold down the
START/STOP
button for at least two seconds. The laser fires repeatedly,
and waveform data is updated continually on the screen.
To stop a real-time test, push the
START/STOP
button.
To begin a high-density test, push the
START/STOP
button. Data is acquired at high density for the distance
range displayed on the screen.
Allow a high-density test to finish normally.
NOTE
. In Manual mode, when testing with
Zoom On
, new data is
acquired only for the portion of the waveform that is visible within
the zoom window. Any previously acquired overview waveform is
updated within the zoom window only. Use this technique to acquire
high-density test data for a specific event or section of fiber.
To test the entire fiber, turn the zoom function off before pressing the
START/STOP
button.
Testing A Fiber
2–22 TFS3031 TekRanger/TekRanger 2 User Manual
Step 4. Push the
SELECT
button to choose the Zoom option.
Step 5. Size the zoom window to encompass the event or area in
question. The smaller the zoom window the faster the screen
updates after zooming.
If necessary, refer to page 2–19 for information about sizing
the zoom window.
Step 6. Push the
Zoom On
softkey. The area within the zoom
window expands to fill the screen.
To begin a real-time test, hold down the
START/STOP
button for at least two seconds. The laser fires repeatedly,
and waveform data is updated continually on the screen.
To stop a real-time test, push the
START/STOP
button.
To begin a high-density test, push the
START/STOP
button. Data is acquired at high density for the distance
range displayed on the screen.
Allow a high-density test to finish normally.
NOTE
. In Manual mode, when testing with
Zoom On
, new data is
acquired only for the portion of the waveform that is visible within
the zoom window. Any previously acquired overview waveform is
updated within the zoom window only. Use this technique to acquire
high-density test data for a specific event or section of fiber.
To test the entire fiber, turn the zoom function off before pressing the
START/STOP
button.