DTX Series CableAnalyzer
Technical Reference Handbook
5-38
Bi-Directional Testing
The Bi-Directional setting lets you test cabling in both
directions and save the bi-directional test results in Smart
Remote and Loopback modes.
To run a bi-directional test:
1 Turn the rotary switch to SETUP; then select Fiber.
2 Select Bi-Directional; then select Yes.
3 Run an Autotest test on the cabling, as described in
the previous sections for Smart Remote mode and
Loopback mode.
4 Halfway through the test, the tester prompts you to
swap the fibers at each end of the cabling.
Caution
Swap the connections at the patch panel, not at
the tester's ports. Disconnecting the patch cord
from the tester’s output port invalidates the
reference.
5 Press
N to save the test. Select or create a fiber ID;
then press
N again. In Smart Remote mode, you
will need to save two results, one for each fiber.
Bi-Directional Results for Smart Remote Mode
Unsaved tests show the results for both fibers in one set
of screens, as shown at the left of Figure 5-18. Input Fiber
and Output Fiber refer to the fibers connected to the
main tester’s input and output ports at the end of the
test.
On the results screen for loss and length measurements
for each fiber, press
J Other Dir. to see results for the
other direction.
Saved tests for Smart Remote mode are stored in two
records, one for each fiber, as shown at the right of
Figure 5-18. Each record contains bi-directional results for
one fiber.
Bi-Directional Results for Loopback Mode
In the results for Loopback mode, Output to Input refers
to the direction from the tester’s output port to its input
port. Input to Output refers to the direction from the
tester’s input port to its output port. Both results are
stored in one record.
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