Otdr Modules; Characteristics Of Reflectometry Measurements - JDS Uniphase 4100 User Manual

Chapter 10 Technical specifications

OTDR modules

OTDR modules

Characteristics
of reflectometry
measurements
144
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
(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
User Manual 770000102/08
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