Manual

ManualsBrandsPathway ManualsComputer AccessoriesDMX Decoder - # 8721/8741

DMXDecoder User Guide

DMXDecoders convert DMX, AMX or D54

multiplexed protocols to analog control signals.

Operational Philosophy

Features

Indicators

• Microprocessor-based electronics

• Rotary address switch selects unit address in

one-dimmer increments

• Selectable status quo memory retention feature

maintains output levels at last known values for

five minutes upon loss of input control signal

• Auto recognition of control protocol on 24

channel models

• User-configuration positive or negative analog

outputs on 48 channel models

• LED indicators for control signal detect and

microprocessor status.

• Built in output test function allows dimmers to

be turned on from front panel switches

• 19 inch rack mount kit available

Address Selection

Three rotary switches select the offset start

address for the unit in most configurations. In test

mode, the switches set dimmers to full one at a

time. From left to right the switches are set as

hundreds, tens, and ones.

Two LEDs are used to indicate, from left to right,

power supply and processor run status and data

receive detection.

L1 : Glowing solidly indicates power supply and

processor OK; off indicates no power, and

flashing indicates defective processor

hardware.

L2 : Glowing solidly indicates data signal received;

off indicates no signal present. Note that an

Ad d re ss se le c t switc he s

Mo d e se le c t DIP switc he s

LED indic ators ( power and data )

4321

Summary of content (4 pages)

PAGE 1
DMXDecoder Operational Philosophy DMXDecoders convert DMX, AMX or D54 multiplexed protocols to analog control signals. User Guide Indicators Two LEDs are used to indicate, from left to right, power supply and processor run status and data receive detection. Features • 45 6 45 6 6 45 78 78 78 12 3 • Three rotary switches select the offset start address for the unit in most configurations. In test mode, the switches set dimmers to full one at a time.
PAGE 2
DMXDecoder User Guide Setup Instructions The Gray Interfaces 24 48 channel decoders have been designed to permit easy, economical upgrades to older lighting control systems with analog dimmers. Standard input protocols are USITT DMX-512 or AMX-192, or Strand D54. A few simple steps are required to prepare your interface unit for operation. First, assemble your mating cables and ensure that they conform to the connector pinouts as shown on page .
PAGE 3
DMXDecoder User Guide Connector Pinout Analog DMX - 512 1 - COMMON 2 - DATA- 5 4 3 3 - DATA+ 1 1 2 2 OUT (F) 4 - NC 5 4 3 IN (M) 5 - NC AMX - 192 PUSH AMX PIN ASSIGNMENT 1 - COMMON 2 - CLOCK+ 1 – Channel 1 & 25 16 – Channel 15 & 39 2 – Channel 2 & 26 17 – Channel 16 & 40 3 – Channel 3 & 27 18 – Channel 17 & 41 4 – Channel 4 & 28 19 – Channel 18 & 42 5 – Channel 5 & 29 6 – Channel 6 & 30 20 – Channel 19 & 43 21 – Channel 20 & 44 7 – Channel 7 & 31 22 – Channel 21 & 45 8 – Chann
PAGE 4
DMXDecoder User Guide OUTPUT CONNECTOR ASSIGNMENT DP1 123 48 Channel Decoder Card JP4 JP1 DP2 123 P1 (ALL MODELS) If your decoder uses 25-pin D-type output connectors, you must install JP1 on 24 channel units or JP3 on 48 channel units. This will reassign the output control signals to confirm to the analog pin assignment detail on page 3. DP3 JP5 DP5 DP4 JP2 DIP Switch Settings STATUS QUO HOLD TIME 1 JP3 DP6 JP6 123 OFF Enabled ( 5 Min.