Chapter 6
Technical specifications
OTDR modules for T-BERD/MTS 2000/4000 V2
User Manual
700MAN201 Rev. 002
109
Ranges
Ranges for LA Modules
Distance Range
Up to 260 km
Event Dead Zone
2
1.50
m
Attenuation Dead Zone
3
4
m
Output power of the source in continuous mode
0 dBm
Modes
4
CW, 270Hz, 330Hz, 1kHz, 2kHz
1. Value corresponding to the difference (in dB) between the backscattered level extrapolated at the origin
of the fiber and the RMS noise level , after 3 minutes of averaging, with the largest pulsewidth.
2. EDZ measured at 1.5 dB below the peak of a non-saturated reflecting event at shortest pulsewidth.
3. ADZ measured at +/- 0.5 dB on the basis of a linear regression from a reflectance of type FC/PC (-55
dB) at shortest pulsewidth.
4. Remove 3 dB if used in modulation mode (270/330/1k/2kHz/Auto)
DWDM Modules
41DWDMC
5 ns
30 ns
60ns
100 ns
300 ns
1
μ
s
3
μ
s
10
μ
s
20
μ
s
0.1 km
x
x
0.5 km
x
x
1 km
x
x
x
2 km
x
x
x
x
5 km
x
x
x
x
x
10 km
x
x
x
x
x
x
20 km
x
x
x
x
x
x
x
40 km
x
x
x
x
x
x
x
x
x
80 km
x
x
x
x
x
x
x
x
260 km
x
x
x
x
x
OTDR New IHM rev002.book Page 109 Jeudi, 5. mai 2022 11:50 11
