Viavi T-BERD/MTS 2000 User Manual page 58

Chapter 4 Configuring the reflectometry test
Configuring the test in Expert OTDR
Detection
Splice
Press Edit Number soft key and select a value:
–
–
–
Reflectance
Press Edit Number soft key and select a value:
–
–
–
Ghosts
Fiber end
–
–
Bend
Once parameter is selected, press Edit Number key to display the numeric
keypad and select the wished value:
–
–
–
Mux/Demux
–
–
–
38
Select if a level of detection for splice must be defined.
Enter a min level of detection, from 0.01 to 1.99 dB
No: no splice detection
Auto: to automatically detect splice
Select if level of detection for reflectance must be defined.
Enter a min level of detection, from -98 to -11 dB
None: no reflectance detection
All: all reflectances are detected
Choice (Yes / No / No Analysis) of whether information relating to
ghosts is to be displayed. If ghosts are displayed, the reflection icon
in the table of results appears dotted and the reflection value is
displayed in brackets on the trace, for example «(R:-50 dB)».
Once parameter is selected, press Edit Number key to display the
numeric keypad and select the wished value:
Auto (recommended): option in which the equipment automatically detects
the end of a fiber.
> 3 to > 20 dB (steps of 1 dB): threshold of detection of end of fiber.
(not available in Multimode) With any dual or triple-wavelength
measurement module, the user will have access to the macro bend
detection function in the test setup. Each event of the selected wave-
lengths will then be compared.
None: Bend will not be detected.
Auto: Bend will be automatically detected.
Define by user: Enter the bend value (in dB), with direction keys or
numeric keypad.
Once parameter is selected, press Edit Number key to display the
numeric keypad and select the wished value:
Auto (recommended): option in which the T-BERD/MTS automatically
detects the mux/demux.
> 0.50 to > 4.99 dB: threshold of detection of mux/demux.
None: no mux/demux available.
User Manual 77000010208 Rev. 012