Model LU1940 Edition EN · 07 / 2026 · V2 Doc. No. LU1940-EN-02

19×40 W RGBW LED Matrix Beam · Bee-Eye

LU1940

Moving-head LED matrix fixture with 19 individually controllable RGBW pixels, pan/tilt and motorized zoom 3.5° – 50°

Operating manual. Please read completely before first use and keep for future reference.

Light Source

19 × 40 W4in1 RGBW LED

Pan / Tilt

540° / 270°8 / 16 bit

DMX Channels

21 – 997 channel modes

Zoom

3.5° – 50°motorized

Foreword

00Welcome

Thank you for choosing the Luminus Lighttech LU1940 — a moving-head LED matrix fixture with 19 individually controllable 4-in-1 RGBW pixels, motorized zoom, and pan/tilt movement for stage, club and event use.

This document describes setup, operation, care and troubleshooting of the unit. Read the manual — particularly the Safety Instructions chapter — completely before first use, and keep it together with the unit. If the unit is passed on to a third party, this manual must be included.

0.1Symbol Key

Warning Marks situations that may cause personal injury or damage to the unit. These instructions must be strictly followed.

Note Marks useful supplementary information, tips or explanations that make the manual easier to understand.

Danger — Voltage Marks situations posing a risk to life from electric current. Work on live parts must be performed exclusively by qualified personnel.

0.2Intended Use

The LU1940 is a professional lighting fixture for indoor use on stages, in clubs, and at events. Any other use — in particular outdoors or in humid environments (IP20) — is considered improper use and voids the warranty.

0.3Scope of Delivery

After unpacking, check the package contents for completeness and transport damage.

1 × Luminus Lighttech LU1940 LED matrix beam
1 × Mounting bracket with fixing screws
1 × Seetronic True power cable (1.5 m)
1 × Operating manual

Table of Contents

—Overview

01Safety Instructions04
1.1General Safety04
1.2Installation and Mounting05
02Technical Specifications06
2.1Dimensions07
2.2Photometric Data08
03Controls09
3.1Display and Buttons09
3.2XLR Pin Assignment10
04Setup11
05Menu Navigation12
06Standalone Operating Modes13
07DMX Control14
7.1Reference Tables14
7.2Base Mode 21 CH15
7.3Base Mode 23 CH16
7.4Base Mode 35 CH17
7.5Pixel-Matrix Modes 78 / 92 / 97 / 99 CH18
08Troubleshooting19
09Cleaning & Maintenance20
—Quick Reference Card21
—Index22

Chapter 01

01Safety Instructions

Read this chapter completely before first use. Damage resulting from failure to observe these instructions is excluded from the warranty.

1.1General Safety

Danger to life from electric current Before any work on the unit, disconnect the mains supply on all poles and secure it against being switched back on. Before connecting, make sure that voltage and frequency of the mains supply match the rating label (AC 100 – 240 V, 50 / 60 Hz).

The protective earth conductor (yellow / green) must be properly grounded to avoid electric shock.
The unit is for indoor use only in a dry location — protection rating IP20. Never expose to rain, splashing water, or high humidity.
Install the unit in a well-ventilated location. Keep a minimum distance of ≥ 50 cm from adjacent surfaces and do not block any ventilation slots.
Maximum ambient temperature: ≤ 40 °C. The housing surface may reach up to 85 °C during operation — do not touch the housing with bare hands while operating.
Keep flammable materials (curtains, decorations) away from the unit — fire hazard.
Use a safety cable when installing the fixture. Never handle the unit by the head only — always hold it by the base.
Use only a straight, undamaged power cable. Never pull directly on the cable.
Do not touch any live wiring during operation — risk of electric shock.

Before Opening Do not open the housing within 5 minutes after switching off, and let the unit cool down completely (approx. 15 minutes). Housing, lenses or the UV filter must be replaced if visibly damaged. There are no user-serviceable parts inside — in case of malfunction, stop operation and contact your dealer. Never attempt to repair the unit yourself.

1.2Installation and Mounting

The LU1940 is mounted via the bracket at the base of the unit to a truss or floor stand. Installation must be performed by qualified personnel, out of the reach of people, and not above traffic routes.

Fall Hazard The supporting structure must be able to safely bear at least 10 times the weight of the unit. Additionally secure the unit with a safety cable rated for at least 12 times the weight of the unit.

Mount the unit firmly enough that it cannot vibrate or slip during operation.
Check all screw and clamp connections for a secure fit before every use.
Ensure sufficient ventilation — minimum clearance ≥ 50 cm on all sides, so pan/tilt movement and cooling are not obstructed.
When aiming the fixture, allow for the full pan/tilt travel range (540°/360° · 270°) — adjacent structures or cables must not obstruct movement.

Note Handle the unit only by its base during transport and installation — never by the head. The head contains the moving pan/tilt mechanics and may otherwise be damaged.

Before Switching On

Visually inspect for transport damage, loose screws and damage to the power cable.
Set the DMX address and channel mode on the display (see chapters 4 and 5).
Connect to mains power — the display lights up once the unit is correctly powered.

Chapter 02

02Technical Specifications

Optics

Light Source	19 × 40 W 4in1 RGBW LED
Beam Angle	3.5° – 50° (motorized zoom)
Pixel Control	19 individually controllable LED cells

Movement

Pan	540° / 360° (selectable)
Tilt	270°
Pan/Tilt Resolution	8 / 16 bit
Lens Rotation	0° – 60° + continuous CW/CCW rotation

Control

Protocol	DMX-512
Channel Modes	21 / 23 / 35 / 78 / 92 / 97 / 99 CH
Operating Modes	DMX512 · Master-Slave · Auto Run · Sound · Manual
Display	1.8″ TFT colour display, 180° reversible

Electrical

Input Voltage	AC 100 – 240 V
Frequency	50 / 60 Hz
Power Consumption	640 W

Mechanical

Dimensions (W×D×H)	376 × 280 × 420.5 mm
Net Weight	16.5 kg
Protection Rating	IP20 (indoor use only)
Cooling	Fan, speed-regulated by LED temperature

Connections & Packaging

Power	Seetronic True IN / OUT
Data	3-pin & 5-pin XLR IN / OUT
Carton (1 unit)	53.5 × 39 × 49.5 cm · 18 kg
Flight case (2 units)	97 × 46 × 64 cm · 62 kg

Pixel Effects Each of the 19 LED cells can be controlled individually — the LU1940 can therefore display arrows, digits, letters and running effects directly in the matrix (see chapter 7.5).

2.1Dimensions

All measurements in millimetres. Head diameter Ø 280 mm, overall height 420.5 mm in home position.

LU1940 front view with dimensions: width 376 mm, height 420.5 mm, base width 372 mm

LU1940 side view with dimensions: head diameter Ø280 mm, neck 108 mm, base depth 210 mm

Fig. 2.1 — Front and side view. Left: width 376 · height 420.5 (head 382.5 / right side 403.5) · base width 372 · base height 115. Right: head diameter Ø 280 · neck 108 · base depth 210.

2.1.1Clearance for Movement

When mounting, allow for the fixture's full range of motion (pan 540°/360°, tilt 270°) as well as the motorized zoom and lens rotation mechanism. Adjacent truss parts, cables or other fixtures must not restrict movement.

2.2Photometric Data

Illuminance (lux) as a function of distance and zoom angle, measured per individual colour (R/G/B/W) and in additive 4-in-1 mixing. Values apply per individual LED cell.

Lux chart: illuminance at 3.5° and 50° zoom across distances of 1/3/5/8 m

Fig. 2.2 — Lux values and spot diameter at narrow zoom (3.5°) and wide zoom (50°) for distances of 1, 3, 5 and 8 m.

Note The narrow zoom (3.5°) is suited to sharp beam effects over long throws, while the wide zoom (50°) is better for flood/wash effects at close range. At 50° zoom, the spot diameter at 5 m distance is already 4.46 m.

Chapter 03

03Controls

3.1Display and Buttons

The control panel on the base of the unit features a 1.8″ TFT colour display (reversible 180°) and four buttons for menu navigation.

MENUOpens the programming menu / selects a menu function
DOWN (▼)Moves backward within the selected function / decreases the value
UP (▲)Moves forward within the selected function / increases the value
ENTERConfirms the selected function or the set value

Setting the DMX Address

Open the menuPress »MENU« until »Set DMX Address« appears, then confirm with »ENTER«.
Change the addressThe display shows »Set DMX Address · DMX Address: 001«. Adjust the value with »UP« and »DOWN«.
Save or discard»ENTER« saves the address and exits the menu. »MENU« exits without saving.

3.2XLR Pin Assignment

The LU1940 uses both 3-pin and 5-pin XLR connectors for DMX-512. Use only shielded DMX cable (110 Ω) — not microphone cable.

Fig. 3.1 — 3-pin XLR male (DMX OUT)

Pin 1	Shield / GND
Pin 2	Data − (DATA −)
Pin 3	Data + (DATA +)

Fig. 3.2 — 5-pin XLR male (DMX OUT)

Pin 1	Shield / GND
Pin 2	Data − (DATA −)
Pin 3	Data + (DATA +)
Pin 4 / 5	Not assigned

Note Fit a 120 Ω termination resistor at the last unit in the DMX chain to avoid signal reflections. The 3-pin and 5-pin connectors carry the same DMX signal — use one connector type consistently throughout a chain.

Chapter 04

04Setup

Unpack and inspectCarefully remove the unit from its packaging and check for transport damage. Keep the packaging for transport or return shipping.
Choose a mounting locationWell-ventilated location with ≥ 50 cm clearance on all sides and free range of motion for pan/tilt. Supporting structure: at least 10 times the unit weight.
Mount and secure the bracketAttach and lock the mounting bracket to the truss. Route a safety cable (rated for at least 12 times the weight) through the eyelet.
Connect the DMX cableConnect the controller's DMX output to DMX IN, and loop through DMX OUT to the next unit. Terminate the last unit with 120 Ω.
Connect the power cablePlug in and lock the Seetronic True power cable.
Set channel mode & DMX address»MENU« → »Channel« → select channel mode (21/23/35/78/92/97/99 CH), then »Set DMX Address« → set address (1 – 512) (see chapter 5).
Power onOnce power is applied, the unit automatically initializes pan/tilt/zoom and is then ready for operation.

4.1DMX Address Calculation

Depending on the channel mode, each unit occupies a fixed number of consecutive channels. The next unit starts at start address + channel count. Addresses for the first three units:

Channel Mode	Unit 1	Unit 2	Unit 3
21 CH	1	22	43
23 CH	1	24	47
35 CH	1	36	71
78 CH	1	79	157
92 CH	1	93	185
97 CH	1	98	195
99 CH	1	100	199

Chapter 05

05Menu Navigation

Press »MENU« to open the programming menu. Use »UP«/»DOWN« to select an entry, and »ENTER« to confirm. »MENU« goes back one level.

Menu Item	Range / Options	Description
Set DMX Address	1 – 512	DMX start address of the unit
Pan Degree	540° · 360°	Set the X-axis rotation range
Mic Sense	1 – 100	Microphone sensitivity for Sound mode
Language	English · Chinese	Display menu language
No Signal	1. Black Out · 2. Hold	Behaviour when no DMX signal is present
Fan Set	1. Auto · 2. Low · 3. High	Fan speed
Reset	Yes · No	Re-initialise the unit
Default	Yes · No	Restore factory settings
Adjust (password-protected)	Pan	0 – 255 · calibration
	Tilt	0 – 255 · calibration
	Focus	0 – 255 · calibration
	Rota (lens rotation)	0 – 255 · calibration
	Red / Green / Blue / White	0 – 255 · calibration per channel
	Address Setting	1 – 512
	Reverse — Pan / Tilt / Display	each Yes · No
	Information — CH Value	Display current channel values
	Information — Temp / Soft V.	LED temperature (°C) / software version
Channel	21 · 23 · 35 · 78 · 92 · 97 · 99 CH	Select the DMX channel mode
Mode	DMX512 · Auto · Sound · Manual · Master	Select the operating mode (see chapter 6)

Chapter 06

06Standalone Operating Modes

In addition to control via a DMX controller, the LU1940 can also operate standalone. The operating mode is selected in the menu under »Mode«.

Mode	Description
DMX512	Standard operation — all channels are controlled by an external DMX controller (see chapter 7).
Master-Slave	Multiple units linked via DMX cable: the first unit (master) determines movement and colour, and every downstream unit in the same mode follows in sync — without needing its own DMX address.
Auto Run	The unit automatically plays back an internal light program without a controller or any user input.
Sound / Music	The unit reacts to music via its built-in microphone. Sensitivity is adjustable via »Mic Sense« (1 – 100).
Manual	Direct manual control of all channels via the menu, ideal for testing without a controller (see table below).

6.1Manual Control

In »Manual« mode, all functions can be set directly via the menu (password required, see »Adjust« in chapter 5):

Pan	0 – 255
Tilt	0 – 255
Focus (Zoom)	0 – 255
Rota (lens rotation)	0 – 255

Red / Green / Blue / White	each 0 – 255
Strobe	0 – 255

Chapter 07

07DMX Control

The LU1940 offers seven DMX channel modes (21 – 99 CH). Many channels behave identically across all modes — these reference tables are used by cross-reference in chapters 7.2 – 7.5 to avoid repetition.

7.1Reference Tables

Ref. A — Colour Temperature / RGBW Mixing

0 – 15	No function (RGBW individual channels active)
16 – 175	9 intermediate steps of an R→G→B→W round mix
176 – 195	R100 % G100 % B100 % W100 % (full mix)
196 – 255	13 fixed colour temperatures, 2800 K – 8000 K

Ref. B — Macro Colours

0 – 9	No function
10 – 255	25 macro colours, 10 values each (colour n = CH value 10+(n−1)×10 … 19+(n−1)×10)

Ref. C — Strobe

0 – 3	Light on (no strobe)
4 – 203	Synchronous strobe, 1 – 25 Hz, slow → fast
204 – 255	Random strobe

Ref. D — Dimming Mode

0 – 49	Mode 1
50 – 99	Mode 2
100 – 149	Mode 3
150 – 255	Mode 4

Ref. E — Reset

0 – 250	No function
251 – 255	Reset when held for 5 s

Ref. F — Zoom & Lens Rotation

Zoom: 0 – 255 continuous, narrow (3.5°) → wide (50°)
0 – 155	Lens angle 0° – 60°
156 – 205	Continuous clockwise rotation, fast → slow
206 – 255	Continuous counter-clockwise rotation, slow → fast

Ref. G — Patterns (Static & Dynamic)

Static Patterns
0 – 9	No function
10 – 210	67 monochrome patterns (3 CH values each)
211 – 255	15 mixed-colour patterns (3 CH values each)

Dynamic Running Patterns
0 – 9	No function
10 – 159	30 monochrome running patterns (5 CH values each)
160 – 255	14 mixed-colour running patterns (5 CH values each)

7.2Base Mode 21 CH

Basic mode for simple colour mixing, dimming, pan/tilt and zoom — no pattern effects.

CH	Function	Description
01	Red	Red dimming, 0 – 255
02	Red Fine	16-bit fine adjustment, red
03	Green	Green dimming, 0 – 255
04	Green Fine	16-bit fine adjustment, green
05	Blue	Blue dimming, 0 – 255
06	Blue Fine	16-bit fine adjustment, blue
07	White	White dimming, 0 – 255
08	White Fine	16-bit fine adjustment, white
09	Colour Temperature	See Reference Table A
10	Macro Colour	See Reference Table B
11	Strobe	See Reference Table C
12	Dimmer	Dark → bright, linear, 0 – 255
13	Dimmer Fine	16-bit fine adjustment, dimmer
14	Pan	Pan movement, 0 – 255
15	Pan Fine	16-bit fine adjustment, pan
16	Tilt	Tilt movement, 0 – 255
17	Tilt Fine	16-bit fine adjustment, tilt
18	Dimming Mode	See Reference Table D
19	Reset	See Reference Table E
20	Zoom	See Reference Table F
21	Lens Rotation	See Reference Table F

7.3Base Mode 23 CH

Extended mode with 16-bit pan/tilt at the front of the channel list, pattern effects, and a separately controllable background colour.

CH	Function	Description
01	Pan	0° – 540°, 0 – 255
02	Pan Fine	16-bit fine adjustment, pan
03	Tilt	0° – 270°, 0 – 255
04	Tilt Fine	16-bit fine adjustment, tilt
05	Pan/Tilt Speed	Speed, fast → slow
06	Zoom	Angle, narrow → wide, 0 – 255
07	Lens Rotation	See Reference Table F
08	Dimmer	Dark → bright, linear, 0 – 255
09	Strobe	See Reference Table C
10	Red	Red dimming, 0 – 255
11	Green	Green dimming, 0 – 255
12	Blue	Blue dimming, 0 – 255
13	White	White dimming, 0 – 255
14	Colour Temperature	See Reference Table A
15	Macro Colour	See Reference Table B
16	Static Pattern	See Reference Table G
17	Dynamic Running Pattern	See Reference Table G
18	Running Pattern Speed	0 – 127 forward (fast→slow) · 128 – 255 reverse (slow→fast)
19	Background Colour R	0 – 255
20	Background Colour G	0 – 255
21	Background Colour B	0 – 255
22	Background Colour W	0 – 255
23	Reset	See Reference Table E

7.4Base Mode 35 CH

Same as the 21-CH mode (CH 1 – 21), extended with differentiated foreground/background pattern effects.

CH	Function	Description
01–08	Red / Green / Blue / White (+ Fine)	Same as CH 1 – 8 in the 21-CH mode
09	Colour Temperature	See Reference Table A
10	Macro Colour	See Reference Table B
11	Strobe	See Reference Table C
12–13	Dimmer (+ Fine)	Same as CH 12 – 13 in the 21-CH mode
14–17	Pan / Tilt (+ Fine)	Same as CH 14 – 17 in the 21-CH mode
18	Dimming Mode	See Reference Table D
19	Reset	See Reference Table E
20–21	Zoom / Lens Rotation	See Reference Table F
22	Pattern Rotation	Dynamic running pattern, see Reference Table G
23	Pattern Effect Speed	0 – 9 off · 10 – 132 forward · 133 – 255 reverse
24	Pattern Effect Fade	Crossfade time between patterns, 0 – 255
25–28	Pattern Background R/G/B/W	Colour behind the pattern, each 0 – 255
29	Pattern Dimmer	0 – 100 % pattern brightness
30	Background Dimmer	0 – 100 % background brightness
31	Pattern Change	Controls pattern switching, 0 – 255
32	Pattern Movement	Pattern movement (with CH 22), 0 – 255
33	Foreground Strobe	0 – 255
34	Background Strobe	0 – 255
35	Background Pattern Selection	0 – 255

7.5Pixel-Matrix Modes (78 / 92 / 97 / 99 CH)

Each of these four modes corresponds to a base mode, extended with individual channels for each of the 19 LED cells — enabling arrows, digits, letters and running effects to be displayed pixel-precisely across the matrix.

Mode	Structure	Per LED Cell
78 CH	21-CH base (CH 1 – 21) + 19 × RGB	3 channels: R, G, B
92 CH	35-CH base (CH 1 – 35) + 19 × RGB	3 channels: R, G, B
97 CH	21-CH base (CH 1 – 21) + 19 × RGBW	4 channels: R, G, B, W
99 CH	23-CH base (CH 1 – 23) + 19 × RGBW	4 channels: R, G, B, W

Per-LED Channel Formula

All base channels (colour mixing, dimmer, pan/tilt, zoom, patterns, …) behave exactly as in the corresponding base mode (chapters 7.2 – 7.4). Starting from the first pixel channel, LED numbering follows linearly:

Example, 97-CH mode (21-CH base, 4 channels/LED):

LED	R	G	B	W
1	22	23	24	25
2	26	27	28	29
3	30	31	32	33
… (pattern repeats) …
19	94	95	96	97

Note In the 78-/92-CH modes there is no W channel per LED (only R/G/B, 3 channels/LED) — the formula and order remain the same, only the channel count per LED and the base channel count change (see table above).

Chapter 08

08Troubleshooting

Below are solutions to the most common problems. For other faults, contact your dealer or Luminus Lighttech service.

8.1Unit Does Not Respond — No Light, Fan Not Running

#	Check
1	Check the mains connection and main fuse.
2	Measure the mains voltage at the connector (AC 100 – 240 V).
3	Check the power/display LED on the unit.

8.2Unit Does Not Respond to DMX Controller

#	Check
1	The DMX LED should be on. If not, check XLR cables and connectors for a proper link.
2	If a channel doesn't respond, verify the DMX address and polarity.
3	For intermittent dropouts, check the pins on the connectors and on the PCB of this unit and the previous one.
4	Try another DMX controller to rule it out as the source of the fault.
5	Do not run DMX cables parallel to high-voltage cables — risk of interference.

8.3One Channel Is Not Working Properly

The related stepper motor may be damaged, or the motor cable to the PCB may be broken.
The motor's driver IC on the PCB may be faulty.

Repairs by Qualified Personnel Only Never attempt to open or repair the unit yourself. Repairs by unqualified persons can lead to damage or malfunction and will void the warranty.

Chapter 09

09Cleaning & Maintenance

Regular cleaning of the optics is essential for light output. Damp, smoky or particularly dusty environments require shorter intervals.

9.1Cleaning Intervals

Area	Recommended Interval
External optics (matrix lenses)	at least every 20 days
Internal optics	at least every 30 – 60 days
Visual check of mounting & pan/tilt mechanics	before every use

9.2Procedure

Before Every Cleaning Fully disconnect the unit from mains power and let it cool down before starting to clean.

Disconnect power & let coolUnplug the power cable, check the housing temperature (surface may have reached up to 85 °C).
Clean the opticsSoft, lint-free cloth with a standard glass cleaner. Apply the cleaner to the cloth, not directly onto the glass.
Dry & inspectLet all parts dry thoroughly before switching back on; check mounting and cable connections for a secure fit.

9.3Storage

Store in the original packaging or a flight case. Storage location should be dry and low-dust; observe protection rating IP20 — protect from moisture.

Appendix A

AQuick Reference Card

Tear out along the dashed line and keep at the console or in the flight case.

TEAR OUT HERE

Quick Reference

LU1940 · DMX Modes

Base Modes

21 CH: Colour · Dimmer · Pan/Tilt · Zoom
23 CH: + Patterns · Background Colour
35 CH: + Extended Pattern Effects

Pixel-Matrix Modes

78 CH: 21 CH + 19 × RGB
92 CH: 35 CH + 19 × RGB
97 CH: 21 CH + 19 × RGBW
99 CH: 23 CH + 19 × RGBW

Start Addresses (Units 1 – 3)

21 CH: 1 · 22 · 43
23 CH: 1 · 24 · 47
35 CH: 1 · 36 · 71
97 CH: 1 · 98 · 195
Term.: 120 Ω on last unit

Operating Modes

DMX512: External control
Master-Slave: Linked synchronous control
Auto: Internal program
Sound: Microphone-driven

Movement & Zoom

Pan: 540° / 360°
Tilt: 270°
Zoom: 3.5° – 50°
Lens: 0–60° + continuous rotation

Quick Fault Diagnosis

—: No light? → Check fuse & voltage
—: No DMX? → Check address + polarity + 120 Ω
—: Dropouts? → Check cables & pins
—: Carry the unit by the base only, never the head!

Luminus Lighttech LU1940 · Quick Reference · Edition EN 07/2026 · V2 Full manual in the booklet

Appendix B

BIndex

A

Adjust menu (password)12

Auto Run13

B

Base modes (21/23/35 CH)15–17

C

Cleaning20

Colour temperature (reference)14

D

Dimensions7

Dimming mode14

DMX address11, 12

DMX channel modes6, 11, 14–18

DMX polarity10, 19

F

Fan Set12

Intended use2

I

Installation5

IP202, 4, 6

L

Lens rotation6, 14, 15

Lux chart8

M

Macro colour (reference)14

Manual mode13

Master-Slave13

Menu structure12

Patterns, static/dynamic14, 16–18

P

Pan / Tilt6, 15, 16

Pixel-matrix modes (78/92/97/99 CH)18

R

Reset12, 14

S

Safety instructions4

Scope of delivery2

Seetronic True5, 6

Sound / Music mode13

Strobe14

T

Troubleshooting19

X

XLR pin assignment10

Z

Zoom6, 8, 14

Service & Support

For technical questions, please contact your authorised dealer. Have the model designation (LU1940) and purchase date ready.

Document

Luminus Lighttech LU1940 · Operating Manual
Edition EN · 07 / 2026 · V2 · Doc. No. LU1940-EN-02
Subject to technical changes and errors.