Daktronics Fiber Optic Communication - Manual (Page 14)

3. Right click on the network you want to Test.
4. Click on [Test].
5. If the Transmit LED on the signal converter flickers the signal is getting to the
signal converter. That means that the right Com port is being used, however if it
does not flicker there is either a software or hardware problem with the
computer.
6. If you get the same message in the “Received” box as in the “Sent” box, the
loop-back test was successful, implying that the cable is good to that point.
7. If “No Response” appears in the “Received” box the test failed due to one of the
following problems:
Fiber Optic Communication Manual 10