OTDR MODE
TEST PROCEDURES
OTDR MODE
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
button appears.
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
menu option will not appear.
blue
blue
brown
WAVE
WAVE
WAVE
1m
1m
1m
RFL dB
-81.00
0
dB
0.00
0.00
L m
Wave:
1550nm
WAVE
OPM
VFL
ENTER
AUTO
1310nm
1550nm
SET INDEX OF REFRACTION
Index of refraction should be set to the optical fiber manufacturer’s index of
refraction specification. If unknown, use the recommended values below:
SINGLEMODE – 1.4681
MULTIMODE – 1.4920
To change the index of refraction:
è
STARTUP MENU
è
SETUP MENU
è
OTDR SETUP
Highlight FIBER INDEX, then use
to increase and decrease the
FIBER INDEX.
Press
when finished.
To return to the OTDR trace screen, press until the STARTUP MENU appears, then select the SIMPLE
OTDR menu option.
MENU
SAVE
OTDR CONFIGURATION
LENGTH UNITS
FIBER INDEX
EOF EVENT
THRESHOLD
EVENT
PASS/FAIL
OTDR AUTO
DEAD ZONE
TAIL REMOVAL
SAVE
QUIT
HELP
METERS
1.4681
3.25
FRONT
OFF
OFF