www.lightronics.com
Lightronics Inc.
509 Central Drive, Virginia Beach, VA 23454
Tel: 757 486 3588
OWNERS MANUAL
Version 2.0 02/14/2005
Page 1 of 5
AS-42D
COMPACT DMX DIMMER
IMPORTANT:
Please take a moment to read this manual
before operating the AS-42D DImmer
DESCRIPTION
The AS-42D is a compact 4 channel light dimmer. It has a maximum capacity of 1200 Watts per channel and
maximum total load capacity of 4800 Watts. It is supplied with 2 input power cord stubs which may be connected
to 2 different 120 VAC power phases. The AS - 42D is intended for INDOOR USE ONLY. The unit operates
using the USITT DMX-512 protocol or an industry standard three wire multiplex protocol. The AS-42D may be
operated in a relay (non-dim) mode. The unit will also function as a chaser and has several preset chase patterns
which may be used.
INSTALLATION
LOCATION: Locate the unit in a well ventilated area away from moisture and heat. Two ½” holes are provided
on the dimmer top cover to install a lighting bar pipe clamp and suitable safety cables.
POWER CONNECTIONS: Extending from the chassis are two 20 amp line cords for connection to 2 separate
120 VAC grounded services in any phase combination. Total capacity of the AS-42D is 4800 watts.
LOAD CONNECTIONS: There are 4 numbered duplex outlets on the top of the unit. Each provides 2
connections for one of the output channel. You can connect up to 1200 Watts of lighting to each channel.
STAGE PIN OUTPUT CONNECTOR OPTION: There are 4 numbered female stage pin connectors on the top of
the unit. One connection is provided for each output channel. Wiring information for the stagepin connectors is
shown on the top of the unit.
CONTROL SIGNAL CONNECTIONS:
FOR MULTIPLEX OPERATION: The male three pin XLR connector on the unit end panel connects to the control
console. The female connector is for connection to additional dimmers. The AS-42D dimmer is compatible with
the Lightronics and NSI/Sunn three wire multiplexed protocol. If you have older Lightronics dimmers which run in
the obsolete Lightronics mode only, contact Lightronics for information on changing the mode. When using
multiple dimmers, ALL dimmers MUST be in the SAME mode.
FOR DMX-512 OPERATION: The male five pin XLR connector on the unit end panel connects to the control
console. The female connector is for connection to additional dimmers. The AS-42D dimmer is compatible with
the USITT DMX-512 protocol. If both multiplex and DMX signals are available to the unit - it will automatically
lock on to the DMX signal. Note that the DMX standard does not provide for console power via the dimmer chain.
Therefore the DMX console used with AS-42D dimmers must be powered by other means.
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