High End Systems DL1 - Manual (Page 53)

DL.1 User Manual DMX Programming 4-1
4
Chapter 4:
DMX Programming
DMX Programming Overview
A lighting console typically utilizes a protocol called DMX-512 to communicate with
automated lighting fixtures and conventional dimmers. This protocol consists of 512
unique channels of control per output link (universe). Typically a lighting fixture or
device will use a channel for each parameter’s function. Each channel consists of 256
values ranging from 0 to 255. The lighting console is programmed to transmit a
corresponding DMX value for the desired function of each parameter. All DMX
values are stored within in the lighting console, and typically are referred to as cues,
scenes, or presets.
8-bit vs. 16-bit DMX
Most parameters of an automated light use one channel of DMX providing 256 values
of control (0-255). This is known as 8-bit DMX. Although several DL.1 parameters
use 8-bit DMX, several require a more accurate range of values than can be provided
with a single DMX channel.
By utilizing two DMX channels for a single parameter, 65535 values become
available for controlling and adjusting parameter functions. This is known at 16-bit
DMX. You can adjust 16-bit DMX values in both coarse and fine increments. The first
channel of the pair provides coarse control changes of the DMX value in increments
of 256. The second channel of the pair provides fine control and changes of the DMX
value in increments of 1.
Lighting Consoles
Lighting consoles differ in many aspects and it is important to understand how your
console operates with DL.1 fixtures.
Fixture Libraries
Many sophisticated lighting consoles utilize pre-made fixture libraries. A fixture
library consists of profiles for various types of lighting fixtures and devices. Each
profile corresponds to the fixture’s DMX protocol and allows for ease of
programming. Depending upon the manufacturer of your lighting console, some
DL.1 parameters might have different labels for parameter names and functions than
are listed within this manual. Consult your lighting console manual for further
information.