User`s guide

Performance Tests Performance Test Instructions
64 Agilent 81610A/11A/12A/13A/14A Return Loss Module, Fifth Edition
Performance Test Instructions
CAUTION Do not connect an Agilent 81000BR Reference Reflector directly to the
Agilent 81610A/11A/12A/13A/14A Return Loss module.
NOTE Make sure that all optical connections of the test setups given in the
procedure are dry and clean. DO NOT USE INDEX MATCHING OIL.
For cleaning, use the cleaning instructions given in “Cleaning
Information” on page 89.
Agilent 81610A: Relative Uncertainty of
Return Loss and Dynamic Range Test
Figure 37 Relative Uncertainty of Return Loss - Calibration Setup
The maximum range of the Return Loss meter is significantly affected
by all parasitic reflections and backscatter returned to the optical
output of the Return Loss meter.
To minimize these effects, it is essential to use clean connectors , and
to minimize the fiber lengths and the number of optical connections
used in the measurement setup.
1 Make sure that all cable connectors are clean.
2 Setup the equipment as shown in Figure 37.
3 Press [Preset] on the mainframe
4 Zero the Return Loss meter and the Power meter.
5 Enable the ASE source, and allow 20 minutes for it to stabilize.
83438A ASE Source
83438A
Mainframe 8163A w/ 8161xA RTL
and 81634A Power Sensor
8163A
8161xA
in
out
81634A
81113PC
81610CC