SIE-CNTEP-1100002104-2014
LCFS
AV6418 OTDR
148
Try if finds that adjacent event points have been omitted:
l
Adopt smaller pulse width to retest the trace (note:
select average test mode and set certain average time
here).
l
Set certain average time and adopt average test mode
to perform test so as to raise the signal to noise ratio of
trace.
Ø
Poor signal to noise ratio of the test trace
Poor signal to noise ratio of test trace will affect the
accuracy of trace analysis. Here please try:
l
In automatic test or average test mode, appropriately
increase the value of average time.
l
In average test mode, after setting proper test range,
select larger test pulse width to test again.
l
In average test mode, after setting proper test range
and test pulse width, please select smaller test attenuation
to test again (such as 10dB attenuation).
Ø
OTDR test parameters are set incorrectly.
If the optical fiber length, etc. values are measured
materially different from the actual value, please check:
If refractive index and fiber cable
’
s coefficient of
correction are set in conformity to standard values of the
tested optical fiber or fiber cable.
Unconformable set of the refractive index has a strong
impact on test value of the length of tested optical fiber.
Any problem can
’
t be solved, please do not hesitate to
contact
us. (See
preface
of the
Guide
for
contact
information)
Página No.160 LCFS
CONVALIDACIÓN DE ERRORES DEL PROCESO:
“ADQUISICIÓN DE OTDR (OPTICAL TIME DOMAIN REFLECTOMETER) – REDES GPON/
FTTH/ SDH"
