Chapter 12: The OptiFiber Pro HDR OTDR Module
Settings for HDR OTDR Tests
407
Test Type
(continued)
Auto OTDR: This is the same as the Auto PON OTDR test,
except that the tester does not identify splitters. If the link
has splitters, the tester identifies them as large loss events.
Note
Some unusual faults can cause the Auto OTDR test
to show an unsatisfactory trace. If this occurs, use
the Manual OTDR test to get a better trace.
Manual OTDR: This is the same as the Manual PON OTDR
test, except that the tester does not identify splitters. If the
link has splitters, the tester identifies them as large loss
events. Manual settings are described in this table.
DataCenter OTDR: This test is optimized for fiber
installations that have short links, many connections, and
the possibility of large reflections. The maximum range for
this test is 5 km for singlemode. For more details on
DataCenter OTDR settings, see “OptiFiber Pro DataCenter
OTDR Specifications” on page 625.
Notes
By default, the DataCenter OTDR test uses
1310 nm for singlemode fiber. This wavelength is
typically used in data centers. You can select other
wavelengths if necessary.
If you use only one wavelength, the Macrobend
Detection function will not identify bends.
You must use launch compensation when you do
a DataCenter OTDR test.
FaultMap: The FaultMap test can show connections that do
not show on the OTDR EventMap and connections that are
poor because they have high reflectance. See “The
FaultMap Test” on page 460.
SmartLoop OTDR (Auto) and SmartLoop OTDR (Manual):
The SmartLoop test lets you connect the far ends of the
two fibers in a link so that one OTDR test gives you results
for both fibers. The Auto and Manual settings operate the
same as for the OTDR test. See “The SmartLoop Test” on
page 466.
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Table 15. Settings for HDR OTDR Tests (continued)
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