OTDR MODE
TEST PROCEDURES
OTDR MODE
From the SETUP MENU, highlight EVENTS SETUP, then press
REFLECTIVE EVENT THRESHOLD
This sets the minimum event threshold in dB for reflective events. Events
must have this much reflectivity before they are marked in the event table.
The smallest reflectivity value is limited by the fibers backscatter
coefficient.
LOSS EVENT THRESHOLD
This sets the minimum event threshold in dB for loss events. Events must
fall at least this amount below the backscatter power to be marked in the
event table.
MAXIMUM REFLECTIVITY
The maximum reflectivity that an event can have before failing.
MAXIMUM LOSS
The maximum loss that an event can have before failing.
EVENTS SETUP
OTDR CONFIGURATION
REFLECTIVE
EVENT THRESHOLD
dB
LOSS EVENT
THRESHOLD
dB
MAXIMUM
REFLECTIVITY
dB
MAXIMUM
LOSS
dB
SAVE
QUIT
HELP
77
3.25
1.00
3.25
From the SETUP MENU, highlight SET BACKSCATTER COEFF., then
press
SET BACKSCATTER COEFFICIENT
<
backscatter option
> – options: Current Trace, (
Wave1
), (
Wave2
)
Use left and right arrow keys to change value.
Bns – range: -60.00 to -85.00 dB
Use up and down arrow to increase/decrease backscatter value.
Backscatter coefficient is a measure of the backscatter properties of the
fiber under test, and is provided by the fiber manufacturer.
Backscatter coefficient is important in accurately determining reflectance
measurements in the OTDR.
SET BACKSCATTER COEFFICIENT
SET BACKSCATTER COEFFICIENT
The fiber backscatter
coefficient is a normalized
measure of the backscatter
properties of the fiber and is
provided by the manufacturer of
the optical fiber.
< Current Trace >
^ UP
v DOWN
ENTER=DONE
Bns : -76.00