920XC-13A • 920XC-15A • 920XC-20C Instruction Manual
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Average Time Configuration
Average time will affect the SNR directly. The longer the average time is, the higher SNR is, as
well as dynamic range. Therefore, when measuring long-distance optical fiber, a long average time
should be selected in order to review events at the long-distance end.
Under the parameter configuration menu use p.and.q to highlight "Avg. Time." Press Enter.to.
confirm (Figure 3-12). Press
Use.p.and.q.to.highlight.the.desired.time..Press.Enter to confirm.
Notes:
•
There are five levels of predefined average time: 15 s, 30 s, 1 min, 2 min, and 3 min.
•
The default setting is "30 s."
Wavelength Configuration (920XC-20C only)
Under the parameter configuration menu use p.and.q to highlight "Wavelength." Press Enter.to.
change the wavelength (Figure 3-13).
.to.exit.
Figure 3-12. Average Time Configuration
Figure 3-13. Wavelength Configuration
Basic OTDR Information
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