DMX 512 Optically Isolated
Input Splitter The DSI-4 is
1 input 4 output DMX splitter (distributor, buffer,
amplifier, or booster) with OPTICAL ISOLATION on the
input offering potentially higher
voltage protection. Field serviceable: socketed IC's for
easy replacement, standard IC's available from many
electronic parts suppliers, replaceable power supply,
standard 5 x 20mm internal fuse. Includes +5VDC Power
supply. Dimensions: 3.7" x 6.7" x 2.1"
NOTE - In order to optically isolate the
input and offer protection, the DSI-4 requires a 25mA input
line load which is ½ of a DMX 512 daisy chain load. It is
recommended this unit be used directly out of the lighting
board or DMX generating device. Because of this load the
input does not conform to the DMX 512 specifications but
should work with most systems. For more information about
DMX 512 visit
DMX512 Standards.
Also note that the 4 outputs are separately driven and
electronically isolated, not optically isolated from each
other.