Monitoring fiber in real time mode, Aution – EXFO AXS-100 Series OTDR User Manual
Page 55
Testing Fibers
OTDR
47
Monitoring Fiber in Real Time Mode
Monitoring Fiber in Real Time Mode
You can monitor fiber at one wavelength at a time. You can also switch
from Real time mode to Manual mode at any time.
If you intend to test at multimode wavelengths, carefully read Launch
Conditions for Multimode Measurements on page 50.
To monitor fiber in Real time mode:
1. Clean the connectors properly (see Cleaning and Connecting Optical
2. Connect a launch fiber between the device under test and the OTDR
port. If necessary, set the
(see Setting Analysis
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.
4. Use the left/right function arrows until you see Parameters and display
the pane (F1/F2 key).
C
AUTION
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.