Fiber Instruments Sales ATLAS MINI OTDR, Руководство пользователя

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ATLAS MINI OTDR User guide
7

Measuring time: In the mean measurement mode, the longer the detection time is, the better
the signal-to-noise ratio is improved, and technician receives more accurate the test results.
The user should reasonably select the detection time, which is proportional to the dynamic
measurement.

Resolution: High resolution will have more sampling points and higher accuracy, but it will also
increase time of test due to amount of data collected.

Refractive index: Is the essential characteristics of optical fiber, different manufacturers of
optical fiber have slightly different refractive index which is the key parameter to calculate the
distance, this value cannot be arbitrarily set.

Unit : Kilometer/Kilofeet/Miles.
OTDR will automatically select the most appropriate reference pulse width when manual
measurement range is set in automatic mode.
The range and pulse width can be adjusted manually in manual mode. The following list is for
reference only:
Range
Pulse
Width
100m 500m 2km 5km 10km 20km 40km 60km 100km
5ns
√ √ √ △ △ △ △ △ △
10ns
√ √ √ √ △ △ △ △ △
20ns
√ √ √ √ √ △ △ △ △
50ns
√ √ √ √ √ √ △ △ △
100ns
△ √ √ √ √ √
△
△ △
200ns
△ △ √ √ √ √ √ △ △
500ns
△ △ △ √ √ √ √ √ √
1us
△ △ △ △ √ √ √ √ √
2us
△ △ △ △ △ √ √ √ √
5us
△ △ △ △ △ △ √ √ √
10us
△ △ △ △ △ △ △ √ √