A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # -


10 Base 2Coaxial cable based Ethernet; also known as "thinnet"
10 Base 5Multi-cable based Ethernet; also known as "thicknet"
100BaseFXMulti-mode or single mode fiber optic Ethernet, 100 Mbps, full-duplex capable
100BaseTXUnshielded Twisted Pair Ethernet, Category 5, 100 Mbps full-duplex capable
10BaseFLMulti-mode fiber optic Ethernet, 10 Mbps, full-duplex capable, replaces FOIRL
10BaseTUnshielded Twisted Pair Ethernet, Cat. 3/4/5, 20 MHz, full-duplex capable
1PHSingle phase option kit for Unison dimming racks


2DTwo dimension – Plan and Side Views
2P&G"Two Pin and Ground" electrical connector, also known as "Stage Pin"


3DThree dimension – Plan, Side, and Isometric Views


789Keystroke sequence to reset many ETC consoles to default system parameters


AETC Product suffix that represents an Edison connector.
A-DAnalog to Digital
AASAnalog Address System - architectural control system
ACAlternating Current
ACLMAcclaim series lighting console
ACNArchitecture for Control Networks
ACSArchitectural Control System
ADCAnalog to Digital Converter
AFAdvanced Features - option available for ETC Sensor dimmer racks
AFMAirflow Module - Sensor dimmer rack option
AIRAirflow Module - Unison external processor rack option
AMXAnalog Multiplex control signal
ARCHUnison Architectural Option Board
ARRArchitectural Receiver, Rack-mount
ARRIARRI-GB, London dealer that became ETC LTD
ARTNETDMX-Over-Ethernet Protocol
ARWArchitectural Receiver, Wall-mount
ASCIIAmerican Standard Code for Information Interchange
ASTSAlternate Source Transfer System
ATCAstronomical Time Clock
ATMAsynchronous Transfer Mode
AUXAuxiliary 12V/24VDC power required by certain Unison control stations
AUX POWERAuxiliary 12V/24VDC power required by certain Unison control stations
AUX RACKSensor Auxiliary Rack, used to terminate power input for a control system
AXUnison Auxiliary Rack, used to terminate power input for a control system
AX6Unison Auxiliary Rack, small size


BCBranch Circuit Breaker
BNCBritish Naval Connector
BOMBill Of Materials
BYPBypass Option board available for Unison dimmer racks
BpsBits Per Second


CGrounded Twistlock
CAT 5IEEE 802.3 (Ethernet Category 5)
CD-80Strand Century dimmer rack series
CEM+/CEMControl Electronics Module - Sensor dimmer racks
CGOCongo console
CH5/CH200/CH2Lighting Methods Incorporated control consoles
CISCComplex Instruction Set Computer (processor)
CMEUnison Control Module - Extended Architectural
CMEdUnison Control Module - Extended architectural and dimming
CMEiUnison Control Module - Extended Architectural with Ethernet option
CMdUnison Control Module - Dimming only
CPUCentral Processor Unit
CRRFUCongo Radio Remote Focus Unit
CoSClass of Service


D-ADigital to Analog
D192Digital 192 channels - Colortran digital control signal
D20Dimmer Module, 20 ampere maximum load (D20=20Amp, D50=50Amp)
DACDigital to Analog Converter
DASDigital Address System, LMI architectural control system
DCDirect Current
DELTAThree-phase power configuration
DIPDual In-line Package
DIUDimmer Interface (ETC/LMI 1983-1988)
DMMDigital Multi-Meter
DMXsee DMX512
DMX-IDMX to Composer Interpreter - Irideon control signal converter box
DMX512Digital Multiplex - control standard for digital communication in theatrical lighting
DPSDual Processor System
DRDimmer Rack (Unison)
DR12Dimming Rack (Unison) - 12 dimmer modules
DR6Dimming Rack (Unison) - 6 dimmer modules
DRCDesigners Remote Console
DVIDigital Video Input
DVUDual Video Card Upgrade
DWSDesigners Worksheet


EAEnhanced Aluminum (reflector), standard reflector on Source Four fixtures
ECElectrical Contractor
EC-DAElectrocontrols Digital to Analog Convertor (RD Card)
EC-PBElectronic Control Plug Box
EC-PB-DMXElectronic Control Plug Box (DMX)
ECMUXElectro-Controls Multiplex digital control signal
EDLTEnhanced Definition Lens Tube
EDMXDMX transmitted via Ethernet (ETC proprietary control signal)
EEPROMElectrically Erasable Programmable Read-Only Memory
EIA485Electrical specification for DMX (also see RS485)
ELTSEmergency Lighting Transfer System
EM-Electronic Module - Lighting Methods Incorporated dimming control module
EMAPElectronic Module - Architectural Processor
EMARElectronic Module - Architectural Receiver
EMRElectronic Module - Receiver
EOLExpression Off-line Editing software
EPROMErasable Programmable Read-Only Memory
ER4External Rack - for Unison processor's (four slots)
ESTAEntertainment Services and Technology Association
ETCElectronic Theatre Controls, Inc.
ETCNet(Net1) ETC’s first Ethernet protocol used for DMX, video and RFU signals.
ETCNet2Suite of Ethernet based protocols for transmission of EDMX & system messages between lighting equipment
EXP2Expression 2 series lighting console
EXP3Expression 3 series lighting console
EXPNExpression series lighting console
EXPSExpress series lighting console


FIFOFirst In, First Out (Memory)
FLOFluorescent Option board for Unison dimmer racks (for use with 4-wire ballasts)
FOHFront of House
FPCForward Phase Control
FPCField Project Coordinator
FTBFull Tracking Backup
FTPFile Transfer Protocol


GCGeneral Contractor
GTLGrounded Twist Lock - electrical connector
GUIGraphical User Interface


HDHigh Density Dimming Rack (Older dimming rack) LMI Dimmer or hard disk
HLHouse Left
HRHouse Right or High Risetime


I5MResponse Optical Isolation box - one input, five output
IADAnalog to Digital Convertor (RSVP 96 in)
IADRAnalog to Digital Convertor Rack Mount (RSVP 96 in)
IATSEInternational Alliance of Theatrical Stage Employees
IBEWInternational Brotherhood of Electrical Workers
ICIntegrated Circuit
IDADigital to Analog Convertor (RSVP 96 out)
IDARDigital to Analog Convertor Rack Mount (RSVP 96 out)
IDEAIdea series lighting console
IDEA 24, 36, 48Idea two-scene series lighting console
IEEEInstitute of Electrical and Electronics Engineers
ILCIntelligent Lighting Controls, maker of DMX relay cabinents
IMIris Module, Source Four Revolution
IMP2Impression 2 series lighting console
IMPNImpression series lighting console
INSTInsight series lighting console - includes Insight 72 and 108
INST2Insight 2 Series Lighting Consoles
INST3Insight 3 Series Lighting Consoles
IPInternet Protocol
IPXIntegrated Package Exchange
IREarly RNC (Also see EMIR), Lighting Methods Incorporated product
IRFUInfra-Red Remote Focus Unit
IRRRNC Rack Mount, LMI product for installation in L86 dimmer racks
ISDNIntegrated Services Digital Network
IST2Insight 2 series lighting console - includes Insight 2 and 2x ETC


L86Lighting Methods Incorporated dimming product line
LANLocal Area Network
LCDLiquid Crystal Display
LDLighting Designer
LEDLight Emitting Diode
LIOLow Wattage Dimmer Module
LMLight Manager, configuration software for Unison architectural products
LPCLighting Playback Controller
LPSLinkPower Supply


MACMedia Access Control
MCBMain Circuit Breaker
MCMMetal Cold Mirror (reflector), optional dichroic reflector for Source Four fixtures
MCPMaster Control Processor
MDDMultiple Distributed DMX card, rack mounted, one input, up to five outputs
MDRMultiple Distributed DMX Receiver, rack mounted, up to five inputs, one output Response
MIPSMillion Instructions Per Second
MLMain Lug or Moving Light
MLMMoving Light Module
MPEMulti-Protocol Electronics, limited feature control module for Sensor product line
MSCMIDI Show Control
MVFXMicrovision FX Dimming Console
MVSNMicrovision Dimming Console
Micro IILighting Methods Incorporated digital control signal
Moby DACResponse product, 512 channel digital to analog converter


OBS2Obsession II series lighting console
OBSNObsession series lighting console
OOLObsession Off-Line Editing Software


PALProgrammable Array Logic
PB&GParallel Blade and Ground, electrical connector also known as Edison plug
PC-SLTAPersonal Computer - Serial LonTalk Adaptor
PCBPrinted Circuit Board
PCIPrinted Circuit Interface, Unison station used to connect a pc to a Unison network
PDPortable Dimming, Lighting Methods Incorporated dimming rack
PMProject Manager
PPPPoint to Point Protocol
PRIPrimary Rate Interface
PROMProgrammable Read-Only Memory
PWMPulse Width Modulation


RAIDRedundant Array of Inexpensive Disks
RAPRoving Analysis Port
RCRemote Console
RDRack Dimming, Lighting Methods Incorporated dimming product line
RDMRemote Device Management Protocol
REPRepeater module, used in Unison ER racks to lengthen power and data runs
REVSource Four Revolution
RFPRemote Facepanel
RFURemote Focus Unit, control console accessory
RGORemote Go Option, control console option accessory
RIRemote Interface, full function network node, also see RIU accessory
RISCReduced Instruction Set
RIURemote Interface Unit, full function network node, also see RI
RLPRetractable Lighting Position
RMRack Mount
RMAReturn Material Authorization
RNCResponse Network Controller
RPURemote Processor Unit
RRFURadio Remote Focus Unit
RS485Electrical specification for DMX (also see EIA485)
RSPResponse interface products
RSVPResponse Interface Products
RTCReal Time Clock
RVIRemote Video Interface, network node for remote video
RWMRotating Wheel Module for Source Four Revolution
RXReceive (data)


SAPSerial Access Protocol, Unison, also see USAP
SCRSystem Commissioning Request, Silicon-Controlled Rectifier, Software Change Request
SCSISmall Computer Systems Interface
SD (1)LMI Single Dimmer Module or (2) LMI Stage Dimmer Pack
SERFObsession Main Processor Board
SHSmartPack High Voltage (230v)
SLStage Left
SLSmartPack Low Voltage (120v)
SLC-141Remote Focus Unit (Expression series consoles)
SLTASerial LonTalk Adapter
SMPStage Manager.s Panel
SMPTESociety of Motion Picture & Television Engineers, analog control signal
SMTPSimple Mail Transfer Protocol
SNSmartPack Neutral Connect (230v – Euro)
SNMPSimple Network Management Protocol
SP-Sensor Portable, may refer to a touring rack or portable pack
SPSSingle Processor System
SRStage Right
SR-Sensor Rack, refers to non-portable or installation rack
SSSs or hSensor Sound Suppression Skirt or Hood
SWSineWave Dimming, SW- Sensor SineWave Rack
SWMStatic Wheel Module for Source Four Revolution


TCTime Code
TCPTransmission Control Protocol
TDTechnical Director
TDTruss Dimming
TMTerminal Outputs
TXTransmit (data)


ULCDUnison Liquid Crystal Display control station
ULPUnison Link Power
ULPSAUnison Link Power Supply
ULPSBUnison Link Power Supply
UPLCDUnison Portable Liquid Crystal Display control station
UPSUninterruptible Power Supply
UPSACUnison Processor - early Unison processor mounted on Sensor control modules
USAPUnison Serial Access Protocol
USITTUnited States Institute of Theatre Technology
UTPUnshielded Twisted Pair


VMultipin, Veam or Socapex
VLANVirtual Local Area Network


WB6Whoopie Box – 6-channel
WRFUWireless Remote Focus Unit
WYEThree phase power configuration


XLRAudio-style barrel connector (3, 4, 5, or 6 pins)
XMLExtensible Markup Language