Chapter 10
Technical specifications
OTDR modules
User Manual
770000102/08
145
Manual
Measurement
–
Measurement of slope between the cursors.
–
Measurement of attenuation between two segments of fiber.
–
Measurement of reflectance of a reflecting element.
–
Measurement of ORL between the two cursors.
–
Measurement of splice by 2 or 5 points method
Typical
specifications
Typical values, measured at 25°C unless specified.
Multimode OTDR Module
41XXMM
Central Wavelength
a
a. Laser in CW mode, at 25° C
850 / 1300 nm ± 30 nm
Min IEC Dynamic
b
b. Guaranteed value corresponding to the one-way difference (in dB) between the level of back-
diffusion extrapolated at the beginning of the fiber and the level containing 98% of noise, after
3 minutes of averaging, with the largest pulse width (according to IEC 61749 standard).
22 / 19.5 dB
Typical RMS Dynamic Range
c
c. Typical value corresponding to the difference (in dB) between the level of back-diffusion
extrapolated at the beginning of the fiber and the RMS noise level, after 3 minutes of averag-
ing, with the largest pulse width.
26 / 24 dB
Distance Range
Up to 80 km
Pulse width
3 ns to 1 µs
Event Dead Zone
d
d. EDZ measured at +/- 1.5 dB below the peak of a non-saturated reflecting event at shortest
pulse width.
0.8 m
Attenuation Dead Zone
e
e. ADZ measured at +/- 0.5 dB on the basis of a linear regression, using a - 40 dB type reflec-
tance, at shortest pulse width.
4 m
Singlemode Modules
LA
41xxLA
MA
41xxMA
MAE
41XXMAE
MP
41xxMP
Central Wavelength
a
1310 ± 20 nm
1550 ± 20 nm
1310 ± 20 nm
1550 ± 20 nm
1625 ± 10 nm
1650 ± 20 nm
1310 ± 20 nm
1550 ± 20 nm
1310 ± 20 nm
1490 ± 20 nm
1550 ± 20 nm
1625 ± 10 nm
1650 ± 20 nm
Min IEC Dynamic
b
30 dB
27 dB
33 dB
31.5 dB
31 dB
c
31 dB
33 dB
31.5 dB
36 dB
36 dB
33 dB
34 dB
34 dB
MTS2100 4100 Module US rev08.book Page 145 Jeudi, 1. août 2013 1:43 13