NSI 2408CD Installation And Operation Manual page 6

Microplex multiplex control wiring.
Microplex is the control protocol used on all NSI lighting console. This system uses a shielded
wire to transmit up to 128 channels of dimmer control. Microplex should not be used
simultaneously with DMX-512. For short distances (50 feet) a standard microphone cable is used
to carry both the control signal and the DC power source for NSI control consoles. Longer
distances may be accommodated with 18 gauge or better cable to reduce voltage losses of the
power supply.
Connect the Microplex control wires to the appropriate terminals on the power supply card. If an
XLR type connector is used to connect the control console, connect pin 1 to common, pin 2 to + 15
VDC, and pin 3 to MICROPLEX. A duplicate set of connections is provided to carry the control
signal to more dimmer packs. Be sure to set the Channel Address dip switch as required.
Remote control connections.
Special accessories manufactured by NSI may be connected to this dimmer, such as the 4OOCP control
panel for doorways. See the installation instructions that come with these accessories.
LED' S
The indicator LED' s on the dimmer firing cards indicate the status of the dimmer .
RED Indicates the card is receiving DC power (both cards will light even if only one line
is
energized)-
GREEN Steady indicates a multiplex control signal is being received. Flashing indicates
that a fade, initiated from a remote panel, is in process.
YELLOW Indicates a respective dimmer channel is active and LED indicates relative
intensity.
2408 CD / CR DIMMER SYSTEM
Software Revision 2.0, Version C
Page 6 of 10