Acterna MTSe 5000 Series - MTSe Specifications of the OTDR Modules (cont.); Singlemode Modules and Laser Classes

USER MANUAL 750000992/16
11-11
MTS
e
Specifications of the OTDR modules
Laser
Laser classes applicable to the MTS
e
modules:
Singlemode Modules
Modules
Short
Range
High
Resolution
Medium
range
High Dynamic
Long range
Very High Dynamic
Long range
5024/25/26
SR
5024/25/26
DR
5024/25/26
/36 HD
5027 /
36 HD
5024/25/26
VHD
5029
VHD
Wavelength
a
a. laser at 25°C at 10 µs
1310 /
1550
± 20 nm
1310 / 1550
± 20 nm
1310 / 1550
± 20 nm
1625
± 10 nm
1310 / 1550
± 20 nm
1550/1625
± 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.
27,5 / 25
dB
31 / 29
dB
36,5 / 35
dB
35
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.
31 / 29 dB 35 / 33 dB 40 / 38 dB 39 dB 42 / 43 dB 43 / 41 dB
Distance range 260 km 380 km 380 km
Pulsewidth 10 ns to 10
µs
5 ns to 10
µs
10 ns to 20 µs10 ns to 20 µs
Dead zone
d
- 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).
(at 10 ns)
4 m
25 m
(at 5 ns)
1 m
15 m
(at 10 ns)
4 m
25 m
(at 10 ns)
8 m
30 m
Reference standard
Modules EN 60825-1 :1994 FDA21CFR§1040.10
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