Daktronics AF-3150-20-R,A - Manual (Page 85)

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. A flipped RJ11 cable used instead of a straight through cable.
2. A good connection from a computer or signal converter to a through the connecting
cable.
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.
Figure 7: Network Cable Tester
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 Conducting
the Venus 1500 Software
Test.
6/30/2004
ED-14413
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