
Testing Fibers
44 AXS-100 Series
Testing in Manual (Advanced) Mode
Testing in Manual (Advanced) Mode
You can set distance range, pulse, and duration of the acquisition in this
mode.
Note: Not all pulse widths are compatible with all wavelengths.
If you intend to test at multimode wavelengths, carefully read Launch
Conditions for Multimode Measurements on page 50.
To acquire traces in Manual (Advanced) mode:
1. Clean the connectors properly (see Cleaning and Connecting Optical
Fibers on page 22).
2. Connect a launch fiber between the device under test and the OTDR
port. If necessary, set the launch fiber length (see Setting Analysis
Parameters on page 29).
If your unit is equipped with two OTDR ports, ensure that you connect
the fiber to the appropriate port (singlemode, singlemode live, or
multimode), depending on the wavelength you intend to use.
3. Press Menu, select OTDR, and then press Enter.
CAUTION
Never connect a live fiber to the OTDR port without a proper setup.
Any incoming optical power ranging from –65 dBm to –40 dBm will
affect the OTDR acquisition. The way the acquisition will be
affected depends on the selected pulse width.
Any incoming signal greater than –20 dBm could damage your
OTDR permanently. For live-fiber testing, refer to the SM Live port
specifications for the characteristics of the built-in filter.
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