A
PPENDIX
DMX
PRIMER
There are 512 channels in a DMX-512 connection. Channels may be assigned in any manner. A fixture
capable of receiving DMX 512 will require one or a number of sequential channels. The user must assign a
starting address on the fixture that indicates the first channel reserved in the lighting console. There are
many different types of DMX controllable fixtures and they all may vary in the total number of channels
required. Choosing a start address should be planned in advance. Channels should never overlap. If they do,
this will result in erratic operation of the fixtures whose starting address is set incorrectly. You can, however,
control multiple fixtures of the same type using the same starting address as long as the intended result is
that of unison movement or operation. In other words, the fixtures will be slaved together and all respond
exactly the same.
DMX fixtures are designed to receive data through a DMX Chain. A DMX chain connection is where the DMX
OUT of one fixture connects to the DMX IN of the next fixture. The order in which the fixtures are connected
is not important and has no effect on how a lighting console communicates to each fixture. Use an order that
provides for the easiest and most direct cabling. Connect fixtures using shielded two conductor twisted pair
cable with three pin XLR male to female connectors. The shield connection is pin 1, while pin 2 is data
Negative (S-) and pin 3 is data positive (S+). TMB carries 3-pin and 5-pin XLR DMX compliant cables.
G
ENERAL
MAINTENANCE
To maintain optimum performance and minimize wear fixtures should be cleaned frequently. Usage and
environment are contributing factors in determining frequency. As a general rule, fixtures should be cleaned
at least twice a month. Dust build up reduces light output performance and can cause overheating. This can
lead to reduced lamp life and increased mechanical wear. Be sure to power off fixture before conducting
maintenance.
Unplug fixture from power. Use a vacuum or air compressor and a soft brush to remove dust.
collected on external vents and internal components. Clean all glass when the fixture is cold with a mild
solution of glass cleaner or isopropyl alcohol and a soft lint free cotton cloth or lens tissue. Apply solution to
the cloth or tissue and drag dirt and grime to the outside of the lens. Gently polish optical surfaces until they
are free of haze and lint.
The cleaning of internal and external optical lenses and/ or mirrors must be carried out periodically to
optimize light output. Cleaning frequency depends on the environment in which the fixture operates: damp,
smoky or particularly dirty surrounding can cause greater accumulation of dirt on the unit’s optics. Clean with
soft cloth using normal glass cleaning fluid. - always dry the parts carefully. – clean the external optics at
least every 20 days. Clean the internal optics at least every 30 / 60 days.
Mozart MFL user manual
01.08.2017
- 11 -
