Chapter 6
Technical specifications
OTDR modules for T-BERD/MTS 2000/4000 V2
106
User Manual
700MAN201 Rev. 002
LA/MA2/MA3 Modules
A, B and C Modules
Singlemode
Modules
LA
41xxLA
MA2
41xxMA2
MA3
41xxMA3
Central Wavelength
1
1. Laser at 10 µs and 25° C
1310 ± 20 nm
1550 ± 20 nm
1650 ± 20 nm
1310 ± 20 nm
2
1383 ± 3 nm
2
1550 ± 20 nm
2
1625 ± 15 nm
2
2. Laser in CW and 25° C
1310 ± 20 nm
2
1550 ± 20 nm
2
1625 ± 10 nm
1650 + 10/-5 nm
RMS Dynamic Range
3
3. 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.
35 dB
33 dB
30 dB
40 dB
37 dB
38 dB
38 dB
43 dB
41 dB
41 dB
41 dB
Distance Range
up to 260 km
Pulse width
5ns to 20 µs
Event Dead Zone
4
4. EDZ measured at 1.5 dB below the peak of a non-saturated reflecting event at shortest pulse
width.
1.5 m
0.7 m
1383 nm: 1.76 m
5
5. EDZ measured at 1.5 dB below the peak of a non-saturated reflecting event at 10 ns.
0.7 m
Attenuation Dead Zone
6
6. ADZ measured at +/- 0.5 dB on the basis of a linear regression from a reflectance of type FC/
UPC (-55 dB) at shortest pulse width, at 1310 nm.
6 m
3 m
1383 nm: 5.27 m
7
7. ADZ measured at +/- 0.5 dB on the basis of a linear regression from a reflectance of type FC/
UPC (-55 dB) at 10 ns.
3 m
Typical Splitter Attenua-
tion Dead Zone
-
-
45 m
8
8. At 200ns, 1550nm, with 16dB loss non reflective, SADZ threshold at 1dB.
Singlemode Modules
41xxA
41xxB
41xxC
Central Wavelength
1
1310 ± 20 nm
2
1550 ± 20 nm
2
1625 ± 15 nm
1310 ± 20 nm
2
1550 ± 20 nm
2
1625 ± 10 nm
1650 + 10/-5 nm
1310 ± 20 nm
1550 ± 20 nm
1625 ± 10 nm
1650 ± 15 nm
OTDR New IHM rev002.book Page 106 Jeudi, 5. mai 2022 11:50 11
