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Procedure
10 Make a low-reflection termination in the HMS-10/HP/
11 The return loss module measures the termination
12 Connect the HMS-10/HP/HRL to FC/APC patchcord to
13 The lightwave multimeter measures the return loss.
Compare this measurement with the specification listed
in
Chapter 7, "Specifications and Regulatory
Information".
Option 022 instruments (angled contacting con-
nectors)
1 Turn off the output of the source module.
2 Connect a single-mode patchcord between the optical
output of the source module and the INPUT SOURCE
connector of the return loss module.
3 Set the wavelength on the return loss module to
1550 nm, and select an average time of 1 second.
4 Locate an HMS-10/HP/HRL to FC/APC (angled FC)
patchcord. Connect the HMS-10/HP/HRL end of the
patchcord to the OUTPUT connector of the return loss
module. Terminate the FC/APC end of the cable.
5 Zero the return loss module.
6 Turn on the source module.
7 Remove the termination from the cable, and connect the
FC/APC end of an FC/APC to FC/PC cable to the free
end of this cable. Leave the free end of the cable
uncovered.
8 The return loss module measures the reflection
reference (14.6 dB return loss of the FC/PC connector of
the patchcord in air).
9 Disconnect the FC/APC to FC/PC cable.
HRL to FC/APC patchcord. Do this by wrapping the
cable around a 5 mm diameter mandrel six times.
parameter.
the front-panel OPTICAL INPUT connector of the
Agilent 86121A.
Compare this measurement with the specification listed
in
Chapter 7, "Specifications and Regulatory
Information".
Test 4. Optical Input Return Loss
6-9
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