Exfo FTB-635 Wideband Copper and DSL Test Module Manual de usuario Pagina 264

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Noise Tests
256 FTB-635
NEXT
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
Spot Mode Thresholds.
Save Test button opens a new page that allows you to save a snapshot
of test results into a result file. Refer Save Test on page 74 for more
information.
Near End CrossTalk (NEXT) displays the measured near end crosstalk
(in dB) for a single user selected frequency. The NEXT measurement
range is from 0 to 100 dB, with 0.1 dB resolution.
Frequency (TX) displays the single transmission frequency value
selected in the Test Parameters.
The up/down controls can be used for incrementing/decreasing
the frequency value by one frequency step at a time.
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