ALL dimming levels are then transmitted one
after the other via ONE joint control line.
DMX: Features
– Usable data transmission rate:
250000 bit/s
– Refresh rate: times per second
– Max.110
The Lighting Handbook
DMX: General information
DMX was developed the United States for
stage equipment 1986.
This analogue dimming worked well with a
small number spotlights. The
cabling included large number parallel
1–10 control lines became too complex and
inflexible. 512 channels (addresses) per universe
(control circuit)
– Max. However, stages
and shows became bigger and bigger. Previously, the
slider settings for spotlights were converted
to analogue voltage levels between and
10 Subsequently these voltages were trans-
mitted parallel the dimmers via one
control line for each spotlight. luminaires directly one after
the other; for more luminaires, splitter
is required
– Unidirectional: information reported
– Two-wire control line
(shielded, terminal resistance)
– Application: illumination façades (large
number lighting points, dynamic light)
Communication protocols
.
Only the positions the slider have been
converted digital values for the DMX
