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Sensor Delta Dimming Installation Guide
DMX512 and ETCLink network terminations in multiple racks
When you connect data cables to multiple racks (series connections), you
must connect an input and output cable to each data port and turn off
termination for all racks except the last in the series.
1. Prepare the ends of all the data cables. See Preparing data cables for
network connection on page 18 for instructions.
2. On all racks except the last, connect the input and output wires of each
cable to the proper pins on CEM backplane connector J2. See Table 4,
below, for connection details by port.
Note: If you are installing only one DMX512 cable, connect it to DMX Port A.
Note: ETCLink connects two additional 16 AWG (1.5mm
accessory power to the first rack only.
Table 4: J2 connections and termination DIP Switch settings
DMX Port A J2
DMX Port B J2
Black –
J2, 1
Black –
Red +
J2, 2
Red +
Shield
J2, 3
Shield
Port A DIP settings
Port B DIP settings
Last rack
1 and 2 On Last rack 3 and 4 On
Other racks 1 and 2 Off Other
racks
3. Set each connections' termination DIP switches to Off (down position).
Use Table 4 to determine the correct switch numbers.
4. On the last rack, connect each cable to its pins on CEM backplane
connector J2 and set its termination DIP switches to On.
Figure 27: Connecting a data cable to the last CEM backplane
5. Bind each signal wire bundle 1 inch (2.5cm) back from J2 with a wire tie.
ETCLink cables and 16 AWG (1.5mm
DMX Port A cables
Backplane ground
screw
1 2 3 4 5
ETCLink J2
J2, 9
Data –
J2, 10
Data +
J2, 3
Ground
16 AWG (1.5mm
wires
ETCLink DIP settings
Last rack
3 and 4 Off Other racks
Figure 26: Connecting a data cables to the CEM backplane
ETCLink cable (no 16 AWG (1.5mm
DMX Port A cable
Backplane Ground
screw
1 2 3 4 5
2
) wires for
2
) accessory wires
1 2 3 4 5
Termination
DIP switches
(Down is Off)
J2, 13
J2, 14
Backplane ground screw
2
)
J2, 11 – red (12Vdc)
J2, 12 – black (Common)
5 On
5 Off
) accessory wires)
2
1 2 3 4 5
Termination
DIP switches
(Up is On)
21
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