Wb attenuation, Attenuation – EXFO MaxTester 635 User Manual
Page 193
Frequency Tests
Copper and VDSL2/ADSL2+ Multi-play Test Set
185
WB Attenuation
WB Attenuation
Attenuation
The WB (wideband) single-ended attenuation test
allows you to calculate the dissipation of power of a
transmitted signal as it travels over the copper line.
This test is performed from one end of the cable and
does not require a remote second device. The test
does require an out-of-service wire pair that is open at
the far end. Faults should be repaired first.
Current Group is the current test group name, for
example Frequency Tests.
Current Test displays the test being measured.
Here you can switch to another test from the given
list. However, this action will terminate the
ongoing measurement test.
Bandwidth allows you to select the bandwidth of the frequency range
for the test. Available frequency bandwidths are: 2.2 MHz, 8 MHz, 12
MHz, 17.6 MHz, and 30 MHz.
Threshold Settings button opens a new page that allows you to set the
Attenuation threshold.
Cable Setup button opens a new page that allows you to set Cable
Parameters for the Current Test.
Select Graph button changes to Graph Selected when pressed and
opens a new selection of function keys which allow you to maneuver
the graph as follows:
Cursor - press the left/right arrow keys to decrease/increase the
values by moving the cursor. Press and hold the left/right arrow
keys to accelerate the cursor. Press
to recall the cursor and
place it in the middle of the current x-axis limits.