Manual

Chapter 9 Technical specifications
Characteristics of the OTDR
User Manual 7SMART102 Rev006 103
• 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.
100A Series 100AS Series 100B Series
Central
Wavelength
a
1310 nm ± 20nm
1550 nm ± 20nm
filtered 1650 nm ± 20 nm
1310 nm ± 20nm
1550 nm ± 20nm
1310 ± 20nm
1550 ± 20nm
filtered 1625 nm ± 20nm
filtered 1650 nm ± 20nm
Cut Wavelength
range on live
port (filtered)
1290 - 1580 nm
Isolation > 45 dB
E136FB Module
1290 - 1580 nm
Isolation > 45 dB
E138FB65 Module
1260 - 1620 nm
Isolation > 45 dB
Typical RMS
Dynamic Range
b
37 / 35 / 32 dB 30 / 30 dB 40 / 40 / 41 dB
Distance Range Up to 260 km
Pulse width 5 ns to 20µs 3 ns to 20µs
Event Dead
Zone
c
1.35 m 0.90 m
Attenuation
Dead Zone
d
4 m 2.5 m
Splitter
Attenuation
Dead Zone
40 m after 12dB splitter
loss
e
NA
45 m after 15dB splitter
loss
f
a. Laser, at 25° C and measured at 10 µs
b. Typical value corresponding to the one-way difference (in dB) between the extrapolated backscattering
level at the beginning of the fiber and the RMS (SNR = 1) noise level, after 3 minutes averaging and
high dynamic resolution, using the largest pulse width.