ETC Unison DRd Dimming Rack Enclosure - Manual (Page 41)

4
Terminate Wiring 37
Terminate the Unison Options (URTO and UBPO)
Terminate DMX
DMX requires 120  termination at the last DMX
device in the control run. Since a DRd with a
Paradigm module installed can utilize up to two DMX
inputs (2 DMX runs) the right I/O board provides
convenient termination switches for use.
Notice the two termination switches labeled DMXA
and DMXB. Each switch has three termination
positions:
• Source - reserved for RDM termination (future
development).
• Off - no termination, DMX will pass through this device on to the next DMX device in
the data run.
• End - termination is on. Used for the last DMX device (DRd) that is physically
connected in the daisy-chained DMX data run.
When a Paradigm ACP is used in an Unison DRd enclosure, port B will be configured as
an output and cannot be changed. Port A is configured as either a DMX input or output.
When used as an output the DMX termination should always be set to “Off”.
When an Echo or SmartLink ACP is utilized in the Unison DRd enclosure, port A is
automatically configured to be a DMX input and cannot be changed, port B is not used.
N o t e : A single DRd enclosure supports the use of either the Unison RideThru Option
board or the Unison BatteryPack Option, but not both in one enclosure.
RideThru/Batt
J9
DUAL RACK
LO
Half
Termination is available on the right I/O for the either the Unison
Ride Through Option or the Unison BatteryPack Option. You may
use only one of these option kits per enclosure.
Step 1: Notice the two pin connector labeled “RideThru / Batt” on
the right I/O board.
Step 2: Follow the instructions provided in the Setup Guide,
provided with the option kit, for appropriate termination.
APM
-THRU
B - COM A + A - COM
B + B - COM
DMXB
DMXA
SRC OFF END