EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 73)

Testing Fibers in Auto Mode
OTDR 59
To acquire traces in Auto mode:
1. Clean the connectors properly (see Cleaning and Connecting Optical
Fibers on page 26).
2. Connect a fiber to the OTDR port.
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. Before activating the Auto mode, set the autorange acquisition time
(see Setting the Autorange Acquisition Time on page 68).
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.