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1. Introduction
DesignTech Systems' DC-24 and DC-48 MIDI drivers are designed to designed to
convert MIDI signals from software packages such as Hauptwerk into DC outputs.
Outputs can be either continuous, for driving indicator lamps, or pulsed for driving Stop
Action Magnets (SAMs).
DC-24 can drive up to 24 indicators, or 12 SAMs. DC-48 can drive up to 48 indicators,
or 24 SAMs.
DC-24 is available in two versions, one for lamp mode and the other for magnet mode.
On DC-48, the mode can be selected via a DIP switch.
In lamp mode, a MIDI "note on" message will cause an output line to turn on, and a "note
off" message will cause the output line to turn off.
In magnet mode, a MIDI "note on" message will cause an output "on" magnet to be
energized for 150ms, and a "note off" message will cause the corresponding "off" magnet
to be energized for 150ms.
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