Atec Agilent-81618A - Manual (Page 56)

Performance Tests Performance Tests
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Agilent 81618A/9A and Agilent 81622B/3B/4B/6B/7B/8B User’s Guide, Second Edition
b Set the wavelength [
λ] to the wavelength of the RTL source.
c Set [Pwr unit] to .
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 14 Return Loss Measurement Setup
10 At the Return Loss Module, press [TermCal] in order to calibrate
the Return Loss Module at termination condition.
N O T E Do not wrap the cable. The termination condition is realized with the
open end of the patchcord.
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.
81113SC
Mainframe 8163A/B w/ 8161xA RTL
and 81618A Interface Module
8163A/B 8161xA
in
out
81618A
Optical Head 8162xA
DUT