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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 24: Side knockouts
20
Connecting DMX512 and ETCLink to multiple racks
Unlike single racks, multiple rack connections have network termination
turned Off, except for the last rack in the series. Also, the 16 AWG (1.5mm
ETCLink auxiliary power wires are only connected to the first rack in the series.
Routing DMX512 and Data Cables between multiple racks
Note: DMX512 and ETCLink cable connections must be made in a series. Do
not start connecting a group of racks from the middle.
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.
Typical
conduit
entry
points
2. Make a conduit openings between the racks to be connected in series. If
the data cable runs through the rack, cut a conduit hole in the side of the
Auxiliary bay.
Note: Using side knockouts for data cable conduit between racks is
recommended because it provides the most direct route between
CEM backplanes. You can use top or bottom knockouts if desired.
3. Attach control cable conduit in the first knockout hole, and in the
knockouts between the remaining racks.
4. Pull DMX512 and ETCLink cables through the conduit connection on the
first rack through the connections between the racks until the cable
reaches the last rack in the group.
Note: Leave 10-12 inches (25–30cm) of slack in the cable at each rack's CEM
backplane.
Slack cable for
making connections
Figure 25: Routing data cable through multiple racks
2
)
Connect separated
racks with conduit
Electronic Theatre Controls, Inc.
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