Daktronics KE-1010-7.6-RG - Manual (Page 59)

RS-422 Loop-Back Test (Indoor/Outdoor Displays)
All indoor displays and some outdoor displays (AE-3010, AF-3010, AF-3020, and X-1000) use
RJ11 plugs or connectors. In those cases, a “Network Cable Tester” is provided to conduct
the test.
The network cable tester is used to test for two things:
• verify that a flipped RJ11 cable is being used.
• verify that a good connection is made from a computer or signal converter.
The use of a flipped (reversed) or straight cable can be determined visually. Use the figures
below as a guide, or use the Network Cable Tester box for assistance.
Figure 26: Flipped Cable (Reversed)
Figure 27: Straight Cable
1. Plug one end of the flipped cable into the output from the computer or signal
converter.
2. Plug one end of the flipped cable into J2 (Loopback Connector) on the network cable
tester box.
3. When both ends are
connected, perform the loop-
back test using the Venus 1500
software as described in
Section 1.4.
Figure 28: Network Cable Tester
Signal Converter 31