Lightronics SD4102 - Manual (Page 2)

INSTRUCTION MANUAL Page 2 of 4
SD - 4102 DMX PORTABLE DIMMER Version 20090529
If your console uses a 5 pin connectors then you can
make up an adapter cable to accommodate this. The
table below shows the pin assignments for BOTH the 3
pin and 5 pin connectors.
DMX TERMINATION
A DMX chain should be terminated at the last fixture
(and ONLY the last fixture) on the chain. This is done
by installing a commonly available 1/4 Watt, 120 Ohm
resistor across the DATA - and DATA + wires at the
last fixture. If you have only a few fixtures very close
together and a very short run to the controller then you
may be able to operate without the terminator.
OPERATION
An ON/OFF switch is provided on the lower end of the
SD-4102. It controls all power to the unit.
The SD-4102 operates either with external DMX
control or independently in the chase mode. A
DMX
signal indicator in the LCD display will flash
continuously anytime a DMX signal is present.
There is a LED indicator for each dimmer channel
which shows the current channel intensity.
CHANNEL ASSIGNMENTS
The SD-4102 can be set to start at any DMX channel
(1 thru 512). This is done by setting the units starting
address. The starting address determines the DMX
address of channel one. The other 3 channels will
normally be the next 3 consecutive channel numbers.
The behavior of channels 2, 3, and 4 can be altered by
COMBINING CHANNELS as described in this manual.
SETTING THE STARTING ADDRESS:
During DMX (external control) operation the DMX
channel starting address for the unit is shown on the
LCD display prefixed with
A .
Use the and buttons to change the address. The
starting address for DMX channel five would appear
on the display as
A005 .
COMBINING CHANNELS
The SD-4102 can operate as four independent dimmer
channels, two pairs of channels, or as a single channel.
TO CHANGE THE CHANNEL COMBINE SETTING:
1. Push MENU.
2. The current setting will be shown prefixed by CH: .
Use the and buttons to select CH:04 for four
independent channels, CH:02 for two pairs of two
channels each, or CH:01 to make the unit run with
all four channels acting together.
OPERATING MODES
The operating mode is controlled by the MODE button.
You can switch between external and chase modes at
any time.
EXTERNAL MODE (DMX CONTROL) OPERATION
Operation is automatically controlled by an external
DMX signal from a lighting console when the unit is in
the external mode.
The EXT indicator in the LCD display is on when in
external mode. The DMX SIGNAL indicator in the
display will be flashing if a DMX signal is present.
CHASE MODE OPERATION
Chase mode provides the ability to automatically run
one of 16 chase programs. The
CHASE indicator on
the LCD display will be on in chase mode. The DMX
signal is ignored in chase mode.
You can control the speed and intensity of chase
programs. Speed and intensity settings apply to all
chase programs.
TO SELECT A CHASE PROGRAM
1. Push MODE to switch the unit to chase mode.
The LCD display will show which chase program
is active preceeded with
P: . Chase program 12
would be shown as P:12 .
2. Use the and buttons to select any other chase
program. It will become active immediately.
PIN # SIGNAL NAME
1 DMX COMMON
2 DMX DATA -
3 DMX DATA +
4 NOT USED
5 NOT USED
CAUTION The SD-4102 can become
HOT when operating. Allow the unit to
cool before handling it