User Manual

FTB-720C—LAN/WAN Access OTDR
QUAD OPTION FOR MULTIMODE UNITS
The multimode units offer maximum flexibility by featuring a unique quad-ready ability.
Upgrading to the quad option is easy and instantaneous, thanks to a software key that activates the singlemode
wavelengths. Singlemode wavelengths are pre-calibrated at the factory, so you are ready to test singlemode
fibers right after the upgrade with no other constraints. This will save you both time and money.
LOOKING FOR ICON-BASED MAPPING?
Linear View (Included on All EXFO OTDRs)
Available on our OTDRs since 2006, the linear view simplifies the reading of an OTDR trace by displaying icons in a linear way
for each wavelength. This view converts the graph data points obtained from a traditional single pulse trace into reflective or
non-reflective icons. With applied pass/fail thresholds, it becomes easier to pinpoint faults on your link.
This improved version of linear view provides the flexibility to
display both the OTDR graph and its linear view without having
to toggle to analyze your fiber link.
Although this linear view simplifies the OTDR reading of a single
pulse width’s trace, the user will still need to set the OTDR
parameters. In addition, multiple traces must often be performed
in order to fully characterize the fiber links. See the section
below to learn how the iOLM can perform this automatically
and with more accurate results.
SM
MM
QUAD
READY
TROUBLESHOOTING HIGH-SPEED MULTIMODE NETWORKS WITH ENCIRCLED FLUX
EF launch fi ber
(SPSB-EF-C30)
Whether for expanding enterprise-class businesses or large-volume data centers, new high-speed
data networks built with multimode fibers are running under tighter tolerances than ever before.
In the event of failure, intelligent and accurate test tools are needed to quickly find and fix the fault.
Multimode fibers are the trickiest links to test, because the test results are highly dependent on
each device’s output conditions. Troubleshooting with a unit other than the construction unit may
mislead the technician or result in the inability to find the fault, creating longer network downtimes.
For multimode fibers, EXFO recommends using an external launch mode conditioner that is Encircled
Flux (EF)-compliant. The EF standard (as recommended in TIA-568 via TIA-526-14-B and IEC
61280-4-1 Ed. 2.0) is a way of controlling the source launch conditions so that tier-2 troubleshooting
can be performed with maximum accuracy and consistency.