Daktronics AE-3010-7.6-R,G,A - Manual (Page 64)

1.2 RS422 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”
(
Figure 7 ) is provided to conduct the test.
The Network cable tester is used to test for two things:
1. That a flipped RJ11 cable is beingused.
2. That there is good connection 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 5: Flipped Cable (Reversed)
Figure 6: Straight Cable
1. Plug one end of the flipped cable into the output from the computer or
signal converter.
Signal Converters and Loop-Back
Testing for Direct Connections
1-4
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 7: Network Cable Tester