User guide

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100
System
Operation
The AL2001 and AL3001 communicate via a bi-directional eleven bit
parallel bus. The AL2001 contains all phase control timing circuits
including the phase locked loops used to synchronise to mains
frequency.
The AL2001 is also responsible for reading the analogue control
voltage
inputs and the temperature sensor.
The AL3001 is the user interface processor, controlling the display,
keyboard, DMX512 input and non-volatile data storage.
User
Interface
The AL3001 controls the 2 by 20 character LCD and keypad to
provide
the following menu structure:
E D I T
P R E H E A T ?
CH 1 2 3 4 5 6
LV 10 20 30 40 50 60
E N A B L E
P R E H E A T ?
D I S A B L E
P R E H E A T ?
C H A N G E
D M X B A S E ?
D M X B A S E =
0 0 1
E D I T
C U R V E S ?
CH 1 2 3 4 5 6
DL LN LN SQ RL OF OF
0 0 1 D M X 5 1 2
P R E H E A T G O O D D M X
Preheat
The Pre-heat levels are programmed by the user to define the
minimum
allowed level for each channel. Preheat may be globally enabled or
disabled. This data is stored in the eeprom.
Curves
The dimmer curves represent the rate of change of the dimmer
output
with respect to both the DMX512 and analogue inputs. Four user
programmable options are available, these are linear (LN), square
(SQ), relay (RL) and off (OF). This data is stored in the eeprom.