ETC Unison Mosaic Show Control - Manual (Page 43)

43
OPT
The power supply should be connected to the Positive and Signal ground inputs, ensuring
the polarity is correct.
The OPTO will typically consume 4W with all ports fully loaded.
GROUNDING
The OPTO is designed to be mounted on a grounded (earthed) DIN-rail and a dedicated
Chassis ground (earth) terminal is also provided which should be connected to a suitable earth.
STATUS LEDS
The ETC logo will illuminate when power is applied to the OPTO. The red LEDs on the top of
the OPTO indicate the unit's status:
Active: Indicates that the unit is functional.
DMX data: Illuminates when DMX data is being routed (input to all ports).
RDM data:
Illuminates when RDM data is being routed (a port to input).
Error: Flashes to indicate an error condition.
DMX THRU TERMINATION
If the DMX Thru connection is not being used to daisy-chain to other DMX devices then the
supplied termination resistor MUST be fitted to ensure data integrity.
DMX & RDM GUIDELINES
The OPTO is compatible with the DMX512, DMX512(1990), DMX512-A and RDM 1.0
standards and care should be taken to ensure that your cabling, wiring topology and termination
also complies with these standards.
Such compliance is beyond the scope of this document but a good resource is "Recommended
Practice in DMX 512" by Adam Bennette which is available through PLASA and USITT.