Manual

21

Test: Attenuation Measurement
TEST

NOTE: If the test procedure does not include a loopback, then the OLS
is connected at the BBU and the OLP is connected to the fiber under
test at the JB or RRU to perform a link loss measurement.
Local End (at BBU)
. Inspect and, if necessary, clean
J and J.
. Inspect and, if necessary, clean
the male end of the fiber pair
under test. Save images for
report generation.
. Connect J and J to the
fiber pair under test using a
bulkhead adaptor.
At the BBU
. Save channel loss by clicking the SAVE button on the OLP
at  and  nm.
y The OLS will auto toggle between wavelengths
(Twin Test).
. Inspect and, if necessary, clean the female end of the
fiber pair under test and make a connection.
At the RRU
(tower structure or rooftop)
Remote End (at Junction Box [JB] or RRU)
the fiber pair under test using a bulkhead adapter.
. After attenuation, measurement is complete.
. Inspect and, if necessary, clean the female end of fiber
pair under test and make a connection.
. Inspect and, if necessary, clean
both ends of the loopback
device using the PCM port on
the inspection microscope.
. Inspect and, if necessary,
clean the male end of fiber
pair under test on the RFF or
Jumper cable. Save images for
report generation.
. Connect a loopback device on
Female bulkhead inspection
B
Male patch cord
inspection
PP
Reference
fiber [J1]
Reference
fiber [J2]
PP
PP
Power meter
Loopback
Bulkhead
PP
B
PP
B
Inspect
Inspect
PP
PP
Light source