Fluke OF-500-01 OptiFiber, Technical Reference Handbook, Page: 81 / 278

Using the OTDR
Setting Up for OTDR Testing
3-5
3
4 Clean the tester's OTDR port and launch fiber
connectors.
5 Connect the launch fibers to the tester's OTDR port as
shown on the screen and in Figure 3-2, 3-3, or 3-4; then
press
t
.
6 The tester attempts to automatically identify the
launch and receive fiber ends based on the launch
method you selected. If necessary, you can change
these settings on the SET LAUNCH EVENTS screen, as
follows:
W
Caution
Do not set the launch or receive event to a hidden
event. Do not set the receive event to an event
followed by a hidden event. Doing so may make
length and loss results unreliable.
Note
The tester might not identify a low-reflectance
connection, such as an angled physical contact
(APC) connection, as a launch/receive event. These
connections may show as loss events, which you
can manually select to be the launch/receive event.
•
For Launch Only compensation, highlight the event
that is the end of the launch fiber; then press
B
.
•
For Receive compensation, highlight the
event that is the end of the launch fiber and the
beginning of the receive fiber; then press
B
and
C
as necessary to move or set the launch and receive
fibers.
•
For Fiber + Receive compensation, highlight
the event that is the end of the launch fiber; then press
B
Set Launch or
B
Move Launch. Next, highlight
the event that is the beginning of the receive fiber;
then press
C
Set Receive or
C
Move Receive .
To see where the markers are set on the trace, press
A
View Trace.
7 Press
s
; then press
C
OK
.
Launch Fiber Compensation is enabled after you
perform the compensation function.
To view the launch compensation settings, press
F
,
select Set Launch Fiber Compensation; then press
A
View
Settings.
You should run the compensation function again if you
start using a different launch or receive fiber.
Figure 3-5 shows an example of an OTDR trace with launch
and receive markers enabled.