User`s guide

Performance Test Instructions Performance Tests
Agilent 81610A/11A/12A/13A/14A Return Loss Module, Fifth Edition 71
21 At the return loss module:
a Set the averaging time [Averaging time] to 50ms.
b Set [Data Points] to 1000.
c Select [MinMax mode], select the [continuous] mode.
d Fix the cables on the table and ensure no movement of the fibers.
e Select [Reset MinMax]
f Wait 50 seconds.
g Note the DP reading on the return loss module as the PDL value
into the test record.
22 For each Return Loss reading, calculate the result by:
a Calculating the Effective Attenuation by multiplying the Actual
Powermeter Reading (APR) by 2.
b Calculate the total attenuation by totaling the effective
attenuations up to the current reading.
c To calculate the relative uncertainty of return loss, subtract the
RLref and the TA value from the RL value.
d Calculate the revised specification by subtracting the PDL
uncertainty from the specifications.