ETC Sensor3 CE (ESR3) Rack - Manual (Page 29)

4
Control and Data Connections 21
with the rack and should be ordered separately.
Step 2: If needed, terminate both the outgoing cables into the third header, “PASS-
THRU”. This header is located below the primary DMX headers and has both the
DMX A and DMX B connections available as shown above.
Setting DMX Termination
After completing data connections you must properly terminate each DMX line using the
termination DIP switches on the CEM3 backplane. Data termination eliminates signal
“reflections” at the end of the network that interfere with network functions. Each DMX line
should have termination turned On at the last network connection.
Step 1: Locate the termination DIP switches on the CEM3 backplane.
Step 2: Using the label on the backplane to match data connections to the associated
termination DIP switches.
Step 3: Set the termination switches to On (Up) or Off (Down) depending on the
connection status:
•
If the connection is jumpered to another rack or device, turn termination Off.
• If the connection ends at the rack, turn termination On.
• If a data connector is not used, either setting is acceptable.
N o t e : The termination switches should not be set to the “RDM” position unless
recommended by ETC.
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
n/c n/c COM Data + Data + Data - Data -
ORG W/ORG BRN GRN W/GRN BLU W/BLU W/BRN
COM Data + Data -
ORG W/ORG W/BRN
COM Data + Data -
ORG W/ORG W/BRN ORG W/ORG BRN GRN W/GRN BLU W/BLU W/BRN
COM
If daisy-chaining to
another rack or
DMX device...
DMX A
Thru
DMX B
Thru
From source
DMX A
From source
DMX B
Figure 22: IDC DMX Connection