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M-UM010-02 TTK 720 06/18
4d - Set Up Insertion Loss Test
Once the reference has been set with the test instruments, the loopback module AC 4500 will
be inserted onto the fiber pair at the tower top, and the AC 523 will be plugged onto the same
fiber pair at the tower bottom. See diagram below.
NOTE:
Wireless carrier preferences vary on how these tests should be conducted. The diagram above
represents the most common (and most basic) test scenario. Always conduct carrier build guidelines if
unsure of the necessary procedures.
Contact ODM if you encounter test scenarios or connector types that are unfamiliar. We have many
accessory kits to match the requirements of major wireless carrier fiber architectures.