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Section 4
Section 4: AutoTest Procedures
This section describes how to perform AutoTests using the Main and Remote Units or the Main Unit
with a far end loop-back test jumper.
NOTE:
The loop-back procedure calculates the average loss of two fibers and thus is not recommended
for fiber certification.
Conducting an AutoTest
NOTE:
To make bi-directional loss measurements, the Main Unit must be setup to perform “two-way”
tests (refer to section “Selecting AutoTest Direction). Refer to Figures 4-1 and 4-2 when conducting the
following procedure. The Main Unit will prompt you to swap test jumpers (Figure 4-2)
1 Set the AutoTest Reference. If this already has
been done, skip to step 2.
2 Select an AutoTest rule.
3 Enter a file name.
4 Enter starting fiber names and numbers.
5 Connect to the fibers under test (Figure 4-1)
NOTE:
Once the AutoTest reference has been set
do not disconnect the test jumper from the Main or
Remote Unit transmit ports (Tx2 and Tx1).
6 Conduct the test.
• Press the AUTOTEST key. The Main Unit will
connect with the Remote Unit, conduct the
test and display the results. Use the ARROW
keys to view the additional result screens.
Depending on the type of test, either
one-way (uni-directional) or two-way (bi-
directional), 8 or 12 screens of test results
will be available for viewing.
• Press SAVE (F3) to save the test results.
OR
• Press the AUTOTEST key again to retest the
two fibers.
7 To test additional fibers reconnect the Main
and Remote Units to the next fiber pair then
repeat step 6. The fiber numbers will increment
automatically.
fiber under test
Figure 4-1. AutoTest Setup
side 1
side 2
Rx1
Tx2
Main Unit
Rx2
Tx1
Remote Unit
swap test jumpers at patch
panel NOT at the units
Figure 4-2. AutoTest Setup (2nd part of a two-way test)
side 1
side 2
Rx1
Tx2
Main Unit
Rx2
Tx1
Remote Unit
