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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

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

1 2 3 4

CAUTION: 1

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