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6100-Cu Multifunction Copper Tester Operation Manual
12.4 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 frequency
range for the test from a list of available
bandwidths: ISDN, HDSL, SHDSL, ADSL1/2,
ADSL2+, VDSL2-8, VDSL2-12, VDSL2-17,
VDSL2-30, or VDSL2-35.
Threshold Tolerance allows you to set a
marginal pass value which will be displayed on
the graph in yellow.
Threshold Frequency allows you to add
threshold calculations to the WB Attenuation
test by selecting a technology that is used for
threshold pass/fail estimation. The list of
technologies is dynamically populated based
on the selected Bandwidth. Whenever you
change the Bandwidth, the Threshold
Frequency is set to the default None.
Threshold Settings button opens a new page
that allows you to set the Attenuation
threshold.
104
Cable Configuration 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:
o
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
place it in the middle of the current x-axis
limits.
o
Zoom references the middle of the x/y
axis and not the cursor position. Press
the arrow keys as follows:
Right = x-axis zoom in.
Left = x-axis zoom out.
Up = y-axis zoom in.
Down = y-axis zoom out.
o
Pan - use left/right arrow keys to pan the
x-axis and the up/down arrow keys to
pan the y-axis.
o
1:1 resets the x-axis and y-axis limits to
full scale.
o
Return To Results removes these
function keys and displays the
Attenuation page.
Result displays the Cable Length, pass/fail
status, and test results in text and graphical
format. If a Threshold Frequency was
selected (other than None), the calculations
are presented in 2 ways:
o
An attenuation vs. frequency curve is
added to the graph
o
A table displaying the Total equivalent
Calculated Attn and the Measured Attn
at the frequency, specific to the selected
technology; and up to 4 rows displaying
information calculated for each Section
identified on Cable Configuration page.
The Calculated Attn is the sum of the
section attenuations and is shown in
blue.
The Measured Attn displays the
measured attenuation for the frequency
set in the Threshold Settings, and is
shown in black.
The pass/fail criteria is calculated by
comparing Measured Attn to the
equivalent attenuation value displayed in
to recall the cursor and
© 2020 Radiodetection Ltd
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