18
Figure 3-12 Setting the pulse width
Press [
▲
] or [
▼
] to select a pulse width as required, and press [Enter] to make the
setting effective.
The default value of Pulse width is Auto.
If Distance range is set to Auto, Pulse width is also set to Auto. You do
not need to set the pulse width by yourself.
Setting the Measurement Avg.Time
The measurement Avg.Time directly affects the signal to noise ratio (SNR) of the trace.
If a measurement Avg.Time is longer, the SNR becomes higher and a larger dynamic range
can be achieved. Therefore, when measuring a long-distance optical fiber or viewing
remote-end events, select a longer measurement Avg.Time whenever possible.
On the parameter setup page, press [
▲
] or [
▼
] to select Measurement Avg.Time. Press
[Enter] to enter or [ESC] to exit from the measurement Avg.Time setup page, as shown in
Figure 3-13.
Figure 3-13 Setting the measurement
Avg.Time
Press [
▲
] or [
▼
] to select a
Avg.Time
as required, and press [Enter] to make the setting
effective.
Predefined options of the measurement
Avg.Time i
nclude 15s, 30s, 1min, 2min,
and 3min.
The default value of Measurement
Avg.Time
is 30s.
