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Alvin
Key Clamps
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Action 24 Overview
- Channel faders
Each of the channel sliders is identified by a number, and operates over the
scale shown of 0 - 10. Lighting scenes set by the manual faders can be
recorded in any one of the 99 memories.
- Flash buttons
Push buttons with integral LED for each channel provide flash-on, flash-off,
or are inactive, as selected by a 3-position rocker switch. LEDs also
indicate active channels in a running effect or in a pre-recorded memory
prior to modification.
- Master fader
This provides proportional control of the output of the channel faders and
active effects.
- Keypad
Calculator-type keypad has numbers 0-9, Clear and -1
functions, for selection of memory and effects numbers for recording and
playback. A 2-digit LED window above the keypad displays the selected memory
or effect number, the display also indicates that channels with levels are
present in the memory and effect number.
- Record pushbutton
and record lock
Pushbutton with LED and an audible 'bleep' records the lighting state in the
selected memory. A removable key locks the recording and prevents unauthorized
use.
- Modify
Memories and effects may be re-recorded in blind mode by the Modify
pushbutton. Active channels in a selected memory are indicated by the flash
button LED. Their levels can be adjusted up or down and then re-recorded by
pressing Modify a second time.
- Split crossfades
The split dipless crossfader provides 2-scene preset control where either or
both the A and B presets are active. Each has a memory transfer button with
LED to indicate the presence of a loaded memory. Memory playbacks operate on
the 'highest takes precedence' principle with the manual faders.
- Fade time control
Timed crossfades can be selected in the range two seconds to five minutes
using the fade time potentiometer. Manual operation is set at the top of the
scale. Preset fade times are adjustable any time.
- Sequence mode
With the Sequence pushbutton on, the memory number in the LED display
increments automatically after each record push in preparation for the next
scene. In Playback Mode, Sequence loads the next memory into the dark preset
at the completion of a crossfade.
- Effects
Each of the nine programmable effects can contain up to 48 steps and any
number of channels per step. Effect running speed is set on the FX speed
potentiometer, and may be modified at any time. Fade in and fade out times
can be set on the fade time potentiometer. Effects include:
- Four chases
- Cycle
- Random
- Flicker
- Sound-to-Light
- Bass Beat
The four programmable
chases permit positive (forward), shadow (negative) and build type effects
to be created. Sound-to-Light modulation control is provided by three
potentiometers.
- Memory Clear
When pushed simultaneously with the Record pushbutton, this function allows
a selected memory or all memories to be cleared.
- Back-up
Memory is retained for a minimum of seven days if there is a power failure.
With mains power supplied, the faders remain active in the unlikely event of
failure of the central processor.
- System diagnostics
A self-diagnostic program tests all internal memory locations, multiplex
output, displays and other major areas of the system. The LED window reports
any faults using eight specific error codes.
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