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Side knockouts for DMX512 or
ETCLink cables are located
next to the CEM backplane
(Centered or bottom location
depends on rack size)
SR48D
SR12D
SR24D
Figure 21: Side knockouts
Data cables can enter from the
top, bottom or side as desired
CEM backplane
Figure 22: Pulling data
wires into the rack
Sensor Delta Dimming Installation Guide
Connecting DMX512 and ETCLink to a single rack
Use the same basic procedure to connect either an ETCLink or DMX512 data
cable to the CEM backplane. The only difference between the cable types is
their connection points on J2 and which DIP switches you must set.
Routing a single data cable
1. Make a conduit opening in either top, bottom or side of the rack where the
data cable will enter.
Note: SR12D and SR24D racks have top and bottom conduit knockouts,
SR48D racks have top and bottom access panels. All have a left-side
conduit knockout level with the internal data connection terminals.
2. Attach the control cable conduit.
3. Pull DMX512 control and ETCLink network cables through the conduit to
the CEM backplane. Leave 10-12 inches (25–30cm) of extra cable.
Note: When installing ETCLink, you should also pull two 16 AWG (1.5mm
wires to provide operating power for ETCLink peripherals.
Connecting DMX512 and ETCLink wires to the CEM backplane
1. Prepare the ends of the data cables. See Preparing data cables for
network connection on page 18 for instructions.
2. Connect the cables to the proper pins on CEM backplane connector J2.
Note: If you are installing only one DMX512 cable, connect it to DMX Port A.
Note: For accessory power, ETCLink connects two 16 AWG (1.5mm
in addition to the data cable.
Table 3: J2 connections and termination DIP Switch settings
DMX Port A J2
DMX Port B J2
Black – J2, 1
Black – J2, 9
Red +
J2, 2
Red +
Shield
J2, 3
Shield
Port A DIP settings Port B DIP settings ETCLink DIP settings
Setting 1 and 2 On Setting 3 and 4 On Setting
Figure 23: Connecting a Data cables to the CEM backplane
3. Bind each signal wire bundle 1 inch (2.5cm) back from J2 with a wire tie.
4. Set each connections' termination DIP switches to On (up position). Use
Table 3 to determine the correct switch numbers.
ETCLink cable and 16 AWG (1mm
DMX Port A cable
Backplane Ground
screw
1 2 3 4 5
ETCLink J2
Data –
J2, 10
Data +
J2, 3
Ground
16 AWG (1.5mm
wires
2)
) wires
2
) accessory wires
1 2 3 4 5
Termination
DIP switches
(Up is On)
J2, 13
J2, 14
Backplane ground screw
J2, 11 – red (12Vdc)
2
)
J2, 12 – black (Common)
5 On
2
)
19
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