ETC OneTrack by ETC - Reconfiguring DMX Data Lines

22 OneTrack and OneTrack Backbone Planning and Installation Manual
Reconfiguring DMX Data Lines
Based on your system layout, you may need to reposition data lines. This is required for
X-couplers, and may be necessary for T-couplers, too. This example demonstrates
repositioning data lines for the X-coupler, but the same information applies to T-couplers (see
Figure 23 and Figure 24 ). (Images show Data + wiring in red for clarity.)
1. Remove the screws that secure the cover to the coupler.
2. Using a flatblade screwdriver, loosen the screws securing the black data wires.
D
–
D
+
D
–
D
+
D
+
D
–
D
+
D
–
Y-taps disrupt
DMX data
transmission
Original Wire
Connections
Figure 21: Original wire connection (X-coupler)
CAUTION: The unmodified X-coupler wiring forms Y-taps, which disrupt
data transmission. Data transmission will become unreliable if the DMX
signal path is not configured according to ANSI E1.11 - USITT DMX512(A).
3. Gently pull the wires from the connectors.
4. Repeat steps 2 and 3 for remaining connections that need to be repositioned. (You will
end up with extra wires that are not needed.)
5. Insert the wires into their new location. Tighten the wire-retaining screws. Gently pull on
the wires to verify that they are properly connected.