Scatter Coefficient; Distance Unit; Results On Trace - Viavi E4123MM User Manual

Chapter 3 Expert OTDR function
Configuring the unit for Expert OTDR
Figure 27
Wavelength (nm)
Corning 62.5
Corning 50
SpecTran 62.5
Generic 50
Generic 62.5
Generic OM1-62/125
Generic OM2-3- 4 50/125

Scatter coefficient

In the Preset Scatter parameter, define the value for the backscatter to be used in
measurements. Auto is the recommended setting.
User
Auto
In Multimode, two predefined scatter coefficients are available:
Generic 50
Generic 62.5
The default values are given in the paragraph

Distance Unit

Define the unit of the distances displayed: km, kfeet, miles, meter, feet.

Results on trace

None
All
42
Predefined index values (Multi Mode) - Not available in SmartOTDR
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.
Backscatter coefficients are selected automatically for each wave-
length.
850 MM - > -66.3 dB
1300 MM -> -73.7 dB
850 MM -> -66.1 dB
1300 MM -> -70.3 dB
the trace alone
the trace with results value (loss, position, reflectance...) and
markers.
User Manual
850 MM
1.50140
1.48970
1.49600
1.49000
1.49000
1.49600
1.48200
"Reflectance" page
700MAN201 Rev. 004
1300 MM
1.49660
1.48560
1.49100
1.48600
1.48700
1.49100
1.47700
3.