Chapter 12: The OptiFiber Pro HDR OTDR Module
How to Quickly Change OTDR Settings After a Test
451
The measurement in the square is the distance from the start
of the fiber to the yellow cursor.
When the cursor is on an event before you set the mark, this
area shows the event type. See Table 17 on page 432. The text
is green if the event passed, red if the event failed, or black is
there is no limit for measurements. After you set the mark,
the event type does not show.
To move the cursor to an event, tap or .
If the tester used two wavelengths, tap or to see the
other wavelength.
To start another measurement, tap UNMARK. If UNMARK does
not show, tap the yellow circle (
).
The green measurement bar goes from the start point to the
end point of your measurement.
dB: The difference in the power levels (in decibels) between
the start and end of the green bar.
m or ft: The distance between the start and end of the
green bar.
dB/km or dB/kft: The power loss (in decibels) that would
occur over 1 km (1000 m) or 1 kft (1000 ft) of fiber based on the
loss between the start and end of the green bar.
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