SET INDEX OF REFRACTION
To set the index of refraction, press
from the trace screen until the following menu
options appear:
allows the user to change the index of refraction; setting will appear at
the top of the trace screen. Press key again to exit.
Index of refraction should be set to the optical fiber manufacturer’s index of refraction
specification. If unknown, use the suggested values below.
Suggested index of refraction values:
SINGLEMODE – 1.4681
MULTIMODE – 1.4920
INDEX
8
SECTION 2: OTDR TESTING
SETTING TEST PARAMETERS
SET WAVELENGTH
When using a dual-wavelength OTDR, traces can be run at either one or two wavelengths.
To set the trace wavelength(s), press
from the trace screen until the following menu
options appear:
allows the user to select one or both wavelengths to be used for testing.
Arrow keys scroll through three options: 1310nm, 1550nm, BOTH.
Press key again to exit.
The selected wavelength(s) will appear at the bottom of the trace screen. If two wavelengths
are present on the trace screen, they will be displayed as either
or
.
The cursor information below the trace screen applies to the wavelength listed in
.
If the OTDR only has one wavelength installed, the WAVE option will not appear.
blue
blue
brown
WAVE
SETUP
INDEX
LOAD
SAVE
MENU
WAVE
EOF
EVENTS
1m
1m
1m
RFL dB
-81.00
0
dB
0.00
0.00
L m
Wave:
1550nm
WAVE
MENU
EOF
EVENTS
ENTER
AUTO
1310nm
1550nm
1m
1m
1m
RFL dB
-81.00
0
dB
0.00
0.00
L m
Index
1.4681
SETUP
INDEX
LOAD
SAVE
ENTER
AUTO
1310nm
1550nm
