When using an optical time-domain reflectometer (OTDR), what action might a manufacturer require to prevent false readings?
a. Connect a launch cable between the test set and the cable being tested.
b. Connect an injector at the end of the cable being tested.
c. Set the range for maximum reading.
d. Use the frequency mode.
Ans: a. Connect a launch cable between the test set and the cable being tested.
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