YOKOGAWA AQ7280 OTDR, Руководство по началу работы

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IM AQ7280-02EN
Performing Averaged Measurements
In an averaged measurement, the data that is acquired from each pulse is averaged and displayed. When averaged measurement is
performed, the signal-to-noise ratio rises. Averaged measurement is useful when you want to detect faint events that would normally be
obscured by noise.
1.
Using the rotary knob and ENTER , select OTDR .
2.
Press AVG to start the measurement and display the measured waveform on the screen.
The menu switches to the averaged measurement menu. During measurement, the averaging duration and the progress appear in
the upper right of the screen.
During measurement, a mark appears on the display to indicate that the laser light is on.
3.
When averaging finishes, measurement stops automatically. To stop averaged measurement before it finishes, press AVG again
during measurement.
The soft key menu switches to the OTDR menu. The mark that indicates that the laser light is on disappears from the display.
Averaging duration or progress
If “the duration to average over” is set to
Auto, the averaging duration is displayed.
If set to any other value, the progress is
displayed. When the measurement
completes successfully, 100% is displayed.
The time it takes to complete a measurement
varies depending on settings such as the
distance range and the average count.
Laser on indication
Waveform
display screen
Optical Pulse Measurement in Simple Mode