Greenlee 920XC-13A, Instruction Manual

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920XC-13A • 920XC-15A • 920XC-20C Instruction Manual
Definitions of Measurement Parameters
Parameter Definition
Range Length of optical fiber relevant to the trace
Pulse.Width Width of laser pulse sent out from OTDR to optical fiber
Average Time Select.suitable.testing.time
Wavelength Select laser wavelength for measurement
Measurement.Mode Select.mode.for.measurement
VFL Power on or off for visible laser
Length Units Select.units.of.measurement
IOR IOR of optical fiber which affects the transmission speed of laser
Scatter Coefficient Affects backscatter power of laser in fiber
Non-reflection
Threshold
Events whose insertion loss is > the threshold displayed here
Reflection Threshold Reflection events ≥ the threshold displayed here
End Threshold First event with insertion loss ≥ the threshold is considered the end of
fiber, and all following events will be ignored
Delete.File Delete.stored.trace.data.in.the.instrument
Time Show.current.system.time
Auto.Off Enable or disable auto off function
Lang./
Choose language
LCD Contrast Adjust contrast of LCD
Color Mode Select.suitable.color.setting.for.display
Load Default Set.all.parameters.to.factory.setting
Help Show Help files (quick reference)
Range Configuration
Generally, the range is set according to the actual length of optical fiber in order to insure the
accuracy.of.the.measurement.
Under the parameter configuration menu use
p
.and.
q
to highlight “Range.” Press
Enter
.to.select.
a range (Figure 3-10). Press .to.exit.
Figure 3-10. Range Configuration
Use.
p
.and.
q
to select an adequate range. Press
Enter
to confirm.
Basic OTDR Information