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Chapter 7: Use the OTDR
Settings for OTDR Tests
153
Table 7. Settings for OTDR Tests
Module
Select the OTDR module you will use.
To select a different module, tap the
Module
panel on the
TEST SETUP
screen, then tap a module.
Test Type
When you turn on the tester, the
Test Type
shows the test
that was last selected.
Auto OTDR
: The tester automatically selects settings that
give you the best view of the events on the cabling. This
mode is the easiest to use and is the best choice for most
applications. To see the settings the tester used for an
Auto OTDR
test, tap
SETTINGS
on the trace screen.
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 mode lets you select settings to control
the qualities of the trace. See the Technical Reference
Handbook.
DataCenter OTDR
: This test is optimized for fiber
installations that have short links, many connections, and
the possibility of large reflections.
Notes
By default, the DataCenter OTDR test uses 850 nm
for multimode fiber and 1310 nm for singlemode
fiber. These are the wavelengths typically used in
data centers. You can select other wavelengths if
necessary.
You must use launch compensation when you do
a DataCenter OTDR test.
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