TIA/EIA-455-8:2000 (R2008)
$26.00
FOTP-8 Measurement of Splice or Connector Loss and Reflectance Using an OTDR
Published By | Publication Date | Number of Pages |
TIA | 2000 | 26 |
Introduction
Intent
This procedure describes the use of an optical time-domain
reflectometer (OTDR) to indirectly measure the loss and reflectance
of a splice or connector.
Other methods
Loss or reflectance measurements may be obtained also by using
FOTP-34 or FOTP-107. The latter values will be accepted as correct
in the event of a dispute.
Trace defects
Some OTDR/fiber combinations appear to give "noisy" traces that
may be repeatable for a given OTDR but not against other OTDRs with
the same fiber. These appear to be related to polarization and
coherence effects, and are being studied in FO-6.6. Some OTDR
manufacturers offer noise filters, internal or external to the
OTDR, and care shall be taken that these do not mask "true"
artifacts of the trace. Moreover, parts of the trace that are noisy
due to low signal-to-noise ratio shall not be used.