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USER MANUAL 750000992/16
Technical specifications MTS
e
Specifications of the OTDR modules
Wavelength and pulsewidth
Multimode Modules
5023MM 5023 ML
5021MM 5022MM
Wavelength
a
a. laser at 25°C at 50ns
850 ± 20 nm 1300 ± 20 nm 8500/1300 ± 20 nm
Dynamic range
b
with long pulse
b. Specified values, at 25°C, corresponding to the one-way difference (in dB) between the
extrapolated backscattering level at the start of the fiber and the level containing 98 % of noise
data points, after 3 minutes averaging.
20 dB 18 dB 16/14 dB
RMS
c
c. Typical value at 25°C corresponding to the one-way difference (in dB) between the extrapolated
backscattering level, at the start of the fiber and the RMS noise level, after 3 minutes averaging.
25 dB 23 dB 18/16 dB
Pulsewidth 3 ns to 200 ns 3 ns to 200 ns
Dead zone
d
at 3 ns
- Event dead zone
- Attenuation dead zone
d. Typical Values at 25°C :
- The event dead zone is measured at 1,5 dB down from the peak of an unsaturated reflective
event.
- The attenuation dead zone is measured at ± 0.5 dB from the linear regression on a reflectance
type FC/APC (-50 dB).
1.5 m
5 m
1.5 m
5 m
2 m
10 m
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