Chapter 10
Technical specifications
OTDR modules
144
User Manual
770000102/08
OTDR modules
Characteristics
of reflectometry
measurements
Distance measurement
–
Dual cursor
–
Distance displayed takes into account the calibration of the refrac-
tive index of the fiber.
–
Index adjustable from 1,30000 to 1,70000 in steps of 0,00001
–
Resolution of display: 1 cm max.
–
Resolution of cursor: 1 cm max.
–
Spacing of measurement points: from 4 cm, with up to 256 000
acquisition points.
–
Accuracy: ±
1m± sampling resolution ±10
-5
x distance
(excluding errors of calibration of refractive index of the fiber).
–
Display span: 3.25 m to 260 km
Attenuation measurement
–
Dual cursor
–
Resolution of display: 0,001 dB
–
Resolution of cursor: 0,001 dB
–
Linearity: ± 0.05 dB/dB with LA Modules
± 0.03 dB/dB with MA, MAE, MP & QUAD/MM Modules
–
Display span: 1.25 dB to 55 dB
Reflectance Measurement
–
Resolution of display: 0,01 dB
–
Accuracy: ± 2 dB
Automatic measurement
–
Automatic measurement of all the elements of the signal. Slope
measurement by least squares or 2 points of measurement.
–
Display threshold of faults:
- 0 to 5.99 dB in steps of 0.01 dB for event thresholds
- -11 to -99 dB in steps of 1 dB for the reflectance
- 0.01 to 5.99 dB in steps of 0.01 dB for attenuation
–
Display of slope and attenuation for a segment of fiber.
–
Display of the position of a fault and of attenuation.
–
Display of the reflectance of the fault.
–
Display of ORL
MTS2100 4100 Module US rev08.book Page 144 Jeudi, 1. août 2013 1:43 13