16
SN.
Parameter
Definition
2
Pulse width
Width of the laser pulse that is
transmitted from the OTDR to the optical
fiber
3
Measurement
duration
Select appropriate test time.
4
Laser wavelength Select a test laser wavelength.
5
Monitoring mode
Select a measurement mode.
6
Length unit
Select an appropriate length unit.
7
Reflection rate
It is the reflection rate of an optical
fiber, which affects the transmission
speed of the light on the optical fiber.
8
Scatter
coefficient
It affects the back scatter power of the
light on the optical fiber.
9
Non-reflection
threshold
Any event with the insertion loss higher
than this threshold is displayed in the
event list.
10
Reflection
threshold
Any event with the reflection strength
equal to or higher than this threshold is
displayed in the event list.
11
End threshold
The first event with the insertion loss
equal to or higher than this threshold is
regarded as the end of the optical fiber,
and all subsequent events will be
ignored.
12
Time
Set the current system time.
13
Auto Poweroff
Set whether the OTDR is automatically
powered off when no screen or keypad
operation is performed within five
minutes.
14
Language
Select the language that is displayed on
the screen.
15
Default
Default settings of parameters
16
Help
Display the help information.
Setting the Distance Range
Generally, the distance range is set based on the actual length of the optical fiber.
In this way, the measurement accuracy can be ensured.
