Daktronics AE-3010-7.6-R,G,A - Manual (Page 67)

4. Click [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, the computer has either a software or
hardware problem.
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 has continuity to the
point of the connection.
Note: Flipped and straight cables will provide the same results. Check for
correct order of the wires.
7. If “No Response” appears in the “Received” box, the test failed due to one
of the following problems:
a. The correct computer COM port is not being used, or USB port is not
configured as a “serial” port. (If the Transmit LED flickered, this was
not the problem.)
b. A communication problem exists:
• The fiber or the ends on the fiber are bad.
• (or) The wire or the terminations are bad.
c. There was a problem conducting the test:
• The serial cable to the signal converter is bad or not plugged in.
• The signal converter is not plugged in.
8. If the words “It appears as if this port has a modem attached” appear, the
modem will need to be moved, or you need to use a different COM port.
After the test is complete:
1. Remove the wire jumpers and make sure terminations are correct.
2. (or) Remove the fiber splice, and reconnect fiber to fiberboard.
3. Run the test again without the jumpers, splice, or loop-back box. The test
should fail.
4. Use Venus 1500 Display Manager to retrieve the status to ensure
communication now works correctly.
Signal Converters and Loop-Back
Testing for Direct Connections 1-7