Chapter 2
Configuring the reflectometry test
Configuring the test in Expert OTDR
24
User Manual
700MAN201 Rev. 002
Scatter coefficient
In the
Preset Scatter
parameter, define the value for the backscatter to be used in
measurements.
Auto
is the recommended setting.
User
Select, for each wavelength, the backscatter coefficient of -99 dB to -
50 dB by increments of 0.1dB. Modification of the backscatter coeffi-
cient K changes the measurements of reflectance and ORL.
Auto
Backscatter coefficients are selected automatically for each wave-
length.
In Multimode, two predefined scatter coefficients are available:
Generic 50
850 MM - > -66.3 dB
Draka Benbright
1.46750
1.46750
1.46800
1.46850
Fitel Furukawa
1.47000
1.47000
1.47000
1.47000
OFS Lucent Allwave
1.46750
1.46750
1.46750
1.46850
Lucent Truewave
1.47100
1.47100
1.47000
1.47000
SpecTran SM
1.46750
1.46810
1.46810
1.46810
Sterlite
1.46700
1.46700
1.46750
1.46750
Sumitomo Litespec
1.46600
1.46600
1.46700
1.47000
Sumitomo Pure
1.46600
1.46600
1.46700
1.47000
Figure 15
Predefined index values (Multi Mode) - Not available in SmartOTDR
Wavelength (nm)
850 MM
1300 MM
Corning 62.5
1.50140
1.49660
Corning 50
1.48970
1.48560
SpecTran 62.5
1.49600
1.49100
Generic 50
1.49000
1.48600
Generic 62.5
1.49000
1.48700
Generic OM1-62/125
1.49600
1.49100
Generic OM2-3- 4 50/125
1.48200
1.47700
Figure 14
Predefined index values (Single Mode)
Wavelength (nm)
1310 SM
1360 - 1510 SM
1550 SM
1625 - 1650 SM
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