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EXFO FTB-7000 OTDR for FTB-200 v2 User Manual

Page 125

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Analyzing Traces and Events

OTDR

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Summary Table

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Since the summary table shows the information for all the wavelengths
of the main trace only, the Next Trace button is not available.

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The summary table cannot be displayed when the events table is
empty or if the trace contains only a span start. Traces must have been
analyzed before you can see them in the summary table.

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If you close a trace file when the summary table is displayed, the
application will switch to the graph view until you open a new trace file
that can be displayed.

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If you purchased the macrobend finder option and configured the
application to show the macrobends (OTDR Setup > General tab),
the information will appear at the bottom of the summary table.

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If no macrobends were detected, the application displays “No
macrobend has been detected” instead of the information on the
macrobends.

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If the traces that have been analyzed do not match the pair of
wavelengths selected in the OTDR setup for the detection of
macrobends (for example, you perform an acquisition at 1310 nm and
1625 nm, and the wavelengths selected for the detection of
macrobends are 1310 nm/1550 nm), the application displays
“Macrobend parameter is not valid”.

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When you select an element in the macrobend table (element is
highlighted), if you double-tap or press Enter (on the unit’s knob), the
application automatically switches to the graph view. The application
zooms in on the first event that caused the selected macrobend. In the
graph view, the events tab is automatically selected, allowing you to
switch to another event either manually or using the knob.