Fluke DTX-1800, Technical Reference Handbook

Page: 256 / 398

DTX Series CableAnalyzer
Technical Reference Handbook
8-48
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 Loss.
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.
W
Caution
Swap the connections at the patch panel, not at
the tester's ports. Disconnecting the test reference
cord from the tester’s output port invalidates the
reference.
5 When the test is complete, press
N
to save the results.
Select or create a fiber ID for the fiber; then press
N
again.
In Smart Remote mode, you save two results, one for
each fiber. See the next section.
Bi-Directional Results for Smart Remote Mode
Unsaved tests show the results for both fibers, as shown at
the left of Figure 8-23. 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
8-23. 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.