User`s guide

Performance Tests Performance Tests
Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition
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6 At the Power Meter:
a Set the averaging time [AvTime] to 1s
b Set the wavelength [λ] to the wavelength of the RTL source.
c Set [Pwr unit] to <db>.
7 At the Return Loss Module:
a Set the averaging time [AvTime] to 1s.
b Enter the Return Loss Reference value RLref of the 81610CC
reference cable for this wavelength.
c Press [RefCal to calibrate the Return Loss module at reference
condition.
8 At the Power Meter press [Disp -> Ref]. The Power Meter should now
read 0.0 dB.
9 Disconnect the 81610CC Reference Cable from the setup and connect a
81113SC user cable to the Return Loss Module and leave the other end
open as shown in Figure 8.
Figure 12 Return Loss Measurement Setup
10
At the Return Loss Module, press [TermCal] in order to calibrate the
Return Loss Module at termination condition.
11 Now connect the open end to the optical head.
12 Enter the Power reading [P] on the optical head as [FPDelta] on the
Return Loss Meter. Make sure you enter the sign of this value correctly.
13 Note the Return Loss reading as the Return Loss result into the test
record.
Do not wrap the cable. The termination condition is realized with the open
end of the patchcord.
NOTE