Noise Tests
Copper Test
259
NEXT
Spectrum
Spectrum
is a snapshot mode of operation similar to
WB Attenuation
. The
test makes one measurement of the near end crosstalk (NEXT) at fixed and
periodic frequencies, and then stops. The frequency steps depend on the
selected bandwidth selected in the
Test Parameters
.
To access the Spectrum page:
1.
From the
Copper
main menu
Test Groups
, select
Noise
test
.
2.
From the
Tests
menu, select
NEXT
test to start the test.
3.
Select the
Spectrum
tab.
The page allows you to view and set the following parameters:
Hookup Diagram
button opens a
Confirmation
window displaying
how to connect your cables.
Edit Parameters
button opens a new page that allows you to set the
test parameters.
Edit Thresholds
button opens a new page that allows you to set the
Spectrum Mode Thresholds
.