Rush MH 4 Beam User manual

MH 4 Beam
User Manual

© 2013-2015 Martin Professional ApS. Information subject to change without notice. Martin
Professional and all affiliated companies disclaim liability for any injury, damage, direct or
indirect loss, consequential or economic loss or any other loss occasioned by the use of,
inability to use or reliance on the information contained in this manual. The Martin logo, the
RUSH by Martin logo, the RUSH by Martin name, the Martin name and all other trademarks in
this document pertaining to services or products by Martin Professional or its affiliates and
subsidiaries are trademarks owned or licensed by Martin Professional or its affiliates or
subsidiaries.
Martin Professional • Olof Palmes Allé 18 • 8200 Aarhus N • Denmark • www.martin.com
Manual: Revision I

Table of contents
Safety information.....................................................................................................4
Introduction.............................................................................................................10
Before using the product for the first time ...........................................................10
Physical installation.................................................................................................11
Fastening the fixture to a flat surface ..................................................................11
Mounting the fixture on a truss............................................................................11
Securing with a safety cable ...............................................................................12
AC power................................................................................................................13
Linking fixtures to power in a chain.....................................................................14
Fixture overview......................................................................................................14
DMX data link......................................................................................................15
Connecting the data link .....................................................................................16
Fixture setup ...........................................................................................................16
Using the control panel .......................................................................................16
DMX function settings .........................................................................................17
Fixture settings....................................................................................................18
Lamp settings .....................................................................................................18
Display settings...................................................................................................20
Fixture tests ........................................................................................................21
Fixture information ..............................................................................................22
Special functions.................................................................................................23
Effect home position (offset) adjustment.............................................................24
Effects.....................................................................................................................25
Lamp control .......................................................................................................25
Pan and tilt..........................................................................................................25
Dimming..............................................................................................................25
Strobe effects......................................................................................................26
Gobos .................................................................................................................26
Prism...................................................................................................................27
Color wheel.........................................................................................................27
Maintenance ...........................................................................................................28
Cleaning..............................................................................................................28
Lamp service ......................................................................................................29
Fuse replacement ...............................................................................................32
DMX protocol ..........................................................................................................33
Control menus ........................................................................................................38
Offset menu ............................................................................................................41
Error messages.......................................................................................................42
Troubleshooting ......................................................................................................43
Specifications..........................................................................................................45

4 RUSH MH 4 Beam User Manual
Safety information
WARNING!
Read the safety precautions in this manual before installing,
powering, operating or servicing this product.
The following symbols are used to identify important safety information on the
product and in this manual:
Warning!
Safety hazard.
Risk of severe
injury or
death.
Warning!
Powerful light
emission. Risk
of eye injury.
Warning!
Refer to
manual for
important
safety
information.
Warning!
Hazardous
voltage. Risk
of lethal or
severe electric
shock.
Warning!
Hot surfaces
and fire
hazard.
Warning! Risk Group 2 product according to EN 62471. Avoid
looking directly into the beam and do not view the light output
with optical instruments or any device that may concentrate the
beam.
This lighting fixture is for professional use only – it is not for
household use. The fixture must be installed by a qualified
technician. The safety of the installation is the responsibility of
the installer. The fixture presents risks of severe injury or death
due to fire hazards, electric shock and falls. It produces a
powerful, concentrated beam of light that can create a fire
hazard or a risk of eye injury if the safety precautions below are
not followed.
If you have any questions about how to install, operate or
service the fixture safely, please contact your Martin™
distributor (see www.martin.com/distributors for details) or call
the Martin™ 24-hour service hotline on [phone], or in the
USA on 1-888-tech-180.

RUSH MH 4 Beam User Manual 5
Respect all locally applicable laws, codes and regulations when
installing, operating or servicing the fixture.
Refer any service operation not described in this manual to an
authorized Martin™ service technician. Do not try to carry out
any such operation yourself, as doing so may present a health
or safety risk. It may also cause damage or malfunction and it
may void your product warranty.
Install, operate and service RUSH by Martin™ products only as
directed in their user manuals, or you may create a safety
hazard or cause damage that is not covered by product
warranties.
Follow the safety precautions listed below and observe all
warnings in this manual and printed on the product. Keep this
manual for future use.
For the latest user documentation and other information about
this and all Martin™ products, please visit the Martin website at
http://www.martin.com
Protection from electric shock
Do not expose the fixture to rain or moisture.
Disconnect the fixture from AC power before carrying out any
installation or maintenance work, such as changing the lamp,
and when the fixture is not in use.
Ensure that the fixture is electrically connected to ground
(earth).
Use only a source of AC power that complies with local building
and electrical codes and has both overload and ground-fault
(earth-fault) protection.
Socket outlets or external power switches used to supply the
fixture with power must be located near the fixture and easily
accessible so that the fixture can easily be disconnected from
power.
Replace defective fuses with ones of the specified type and
rating only.
Isolate the fixture from power immediately if the power plug or
any seal, cover, cable, or other component is damaged,

6 RUSH MH 4 Beam User Manual
defective, deformed, wet or showing signs of overheating. Do
not reapply power until repairs have been completed.
Before using the fixture, check that all power distribution
equipment and cables are in perfect condition and rated for the
current requirements of all connected devices.
Use only Neutrik PowerCon cable connectors to connect to the
fixture’s power sockets.
Do not connect devices to power in a chain that will exceed the
electrical ratings of any cable or connector used in the chain.
The supplied power input cable is rated 6 A and can safely
supply only one fixture with mains power. Do not connect any
device to the fixture’s MAINS OUT connector when using this
cable. If you replace this cable and also use the replacement
cable to supply only one fixture with mains power, the
replacement cable must also be rated 6 A minimum, have three
conductors 18 AWG or 0.75 mm² minimum conductor size, have
an outer cable diameter of 6 - 15 mm (0.2 - 0.6 in.) and be
temperature-rated to suit the application. In the USA and
Canada the cable must be UL listed, type SJT or equivalent. In
the EU the cable must be type H05VV-F or equivalent.
To connect fixtures to mains power in a chain, you must first
obtain 14 AWG or 1.5 mm2power input and throughput cables
that are 16 A rated and temperature-rated to suit the
application. In the USA and Canada the cables must be UL-
listed, type SJT or equivalent. In the EU the cables must be type
H05VV-F or equivalent. Suitable cables with Neutrik PowerCon
connectors are available from Martin™ (see ‘Accessories’ on
page 47). If you use these cables, you can connect fixtures to
power in a linked chain, MAINS OUT throughput socket to
MAINS IN input socket, but do not link more than:
•five (5) RUSH MH 4 fixtures in total at 100-120 V, or
•ten (10) RUSH MH 4 fixtures in total at 200-240 V.
The voltage and frequency at the MAINS OUT socket are the
same as the voltage and frequency applied to the MAINS IN
socket. Only connect devices to the MAINS OUT socket that
accept this voltage and frequency.

RUSH MH 4 Beam User Manual 7
Protection from burns and fire
Do not use the fixture to illuminate surfaces within 6.5 m (21.3
ft.) of the fixture.
Do not operate the fixture if the ambient temperature (Ta)
exceeds 40° C (104° F).
The surface of the product casing can reach up to 90° C
(194° F) during operation. Avoid contact by persons and
materials. Allow the fixture to cool for at least 60 minutes before
handling.
Keep flammable materials well away from the fixture. Keep all
combustible materials (e.g. fabric, wood, paper) at least 100
mm (4 in.) away from the fixture head.
Ensure that there is free and unobstructed airflow around the
fixture. Provide a minimum clearance of 100 mm (4 in.) around
fans and air vents.
Do not attempt to bypass thermostatic switches or fuses.
Do not stick filters, masks or other materials onto any optical
component.
Lamp safety
Install only a lamp that is approved for use in the product.
Check the serial number label on the base of the product and
install only the lamp type specified on the serial number label.
Prolonged exposure to an unshielded discharge lamp can cause
eye and skin burns. Do not stare directly into the light output.
Never look at an exposed lamp while it is lit.
Do not operate the fixture with missing or damaged covers,
shields, lenses, ultraviolet screens or any optical component.
A hot discharge lamp is under pressure and can explode without
warning. Allow the fixture to cool for at least 60 minutes and
protect yourself with safety glasses and gloves before handling
a lamp.
Replace the lamp immediately if it becomes visually deformed,
damaged or in any way defective. Replace the lamp if light
output intensity falls noticeably.

8 RUSH MH 4 Beam User Manual
Monitor hours of lamp use and replace the lamp before it
reaches the limit of its service life as specified in this manual or
by the lamp manufacturer.
If the quartz envelope of a discharge lamp is broken, the lamp
releases a small quantity of mercury and other toxic gases. If a
discharge lamp explodes in a confined area, evacuate the area
and ventilate it thoroughly. Wear nitrite gloves when handling a
broken discharge lamp. Treat broken or used discharge lamps
as hazardous waste and send to a specialist for disposal.
Protection from eye injury
The fixture emits infrared and ultraviolet rays that are not
normally visible but that may be harmful to the eyes and skin.
Do not stare at an operating lamp. Minimize exposure to eyes or
skin. Use appropriate shielding or eye protection.
Do not look directly into the light beam. Do not point the beam in
a direction where a person can look directly into it.
Ensure that persons are not looking at the light beam when the
product lights up suddenly. This can happen when power is
applied, when the product receives a DMX signal, or when
certain control menu items are selected.
Do not look at the light output with magnifiers, telescopes,
binoculars or similar optical instruments that may concentrate
the light output.
To minimize the risk of eye irritation or injury, disconnect the
fixture from power at all times when the fixture is not in use, and
provide well-lit conditions to reduce the pupil diameter of anyone
working on or near the fixture.
Do not operate the fixture with missing or damaged covers,
shields or any optical component. If shields, lenses or ultraviolet
screens have become visibly damaged to such an extent that
their effectiveness is impaired, for example by cracks or deep
scratches, return the fixture to an authorized Martin™ service
agent for replacement.
Protection from injury
Fasten the fixture securely to a fixed surface or structure when
in use. The fixture is not portable when installed.

RUSH MH 4 Beam User Manual 9
Ensure that any supporting structure and/or hardware used can
hold at least 10 times the weight of all the devices they support.
If suspending from a rigging structure, fasten the fixture to a
rigging clamp. Do not use safety cables as the primary means of
support.
If the fixture is installed in a location where it may cause injury
or damage if it falls, install as directed in this manual a
secondary attachment such as a safety cable that will hold the
fixture if a primary attachment fails. The secondary attachment
must be approved by an official body such as TÜV as a safety
attachment for the weight that it secures, must comply with EN
60598-2-17 Section 17.6.6 and must be capable of bearing a
static suspended load that is ten times the weight of the fixture
and all installed accessories.
Allow enough clearance around the head to ensure that it
cannot collide with an object or another fixture when it moves.
Check that all external covers and rigging hardware are
securely fastened.
Block access below the work area and work from a stable
platform whenever installing, servicing or moving the fixture.
Do not lift or carry the fixture by its head. Always ensure that the
fixture is supported by its base.
In the event of an operating problem, stop using the fixture
immediately and disconnect it from power. Never attempt to use
a fixture that is obviously damaged.
Do not modify the fixture or install other than genuine RUSH by
Martin™ parts.

10 RUSH MH 4 Beam User Manual
Introduction
The RUSH MH 4 Beam™ is a compact-beam moving head fixture. It is
equipped with a discharge lamp with integral reflector in a state-of-the-art
optical system. The fixture is rugged, lightweight and compact, making it ideal
for smaller venues.
The fixture produces an intense and narrow beam for spectacular mid-air
looks and effects. It houses a fixed gobo wheel and color wheel with a
multitude of effects possible from a dimmer and strobe, 6-facet prism and
focus.
The fixture can be controlled using any DMX-compliant controller.
The fixture is supplied with a lamp (installed), a 1.5 m (5 ft.) power cable (US-
type cord cap included in US versions only) and two omega-type mounting
brackets.
Before using the product for the first time
1. Read ’Safety information’ on page 4 before installing, powering, operating
or servicing the fixture.
2. Unpack and ensure that there is no transportation damage before using
the fixture. Never attempt to operate a damaged fixture.
3. If the fixture is not going to be hard-wired to an AC mains power source,
install a local power plug (not supplied) on the end of the supplied power
cable.
4. Before operating, ensure that the voltage and frequency of the local power
source match the mains power requirements of the fixture.
5. Check the RUSH support pages on the Martin Professional website at
www.martin.com for the most recent user documentation and technical
information for the fixture. RUSH by Martin™ user manual revisions are
identified by the revision letter at the bottom of the inside cover.
Note that whenever AC mains power is applied to the fixture, it will reset all
effects and functions to their home positions. The fixture head will move. This
process usually takes around 20 seconds.

RUSH MH 4 Beam User Manual 11
Physical installation
Read ‘Safety information’ on page 4 before installing the
fixture.
The fixture is designed for indoor use only and must be used in
a dry location with adequate ventilation. Ensure that none of the
fixture’s ventilation slots are blocked.
Fasten the fixture to a secure structure or surface. Do not stand
it on a surface or leave it where it can be moved or fall over. If
you install the fixture in a location where it may cause injury or
damage if it falls, secure it as directed in this user manual using
a securely anchored safety cable that will hold the fixture if the
primary fastening method fails.
Do not use the fixture to illuminate surfaces within 6.5 m
(21.3 ft.) of the fixture.
Martin™ can supply safety cables and rigging clamps that are suitable for use
with the fixture (see ‘Accessories’ on page 47).
Fastening the fixture to a flat surface
The fixture can be fastened to a hard, fixed, flat surface that is oriented at any
angle. Ensure that the surface and all fasteners used can support at least 10
times the weight of all fixtures and equipment they will support.
Fasten the fixture securely. If you install the fixture in a location where it may
cause injury or damage if it falls, install a safety cable as directed in ‘Securing
with a safety cable’ on page 12.
Mounting the fixture on a truss
The fixture can be clamped to a truss or similar rigging
structure in any orientation. When installing the fixture
hanging vertically down, you can use an open-type clamp
such as a G-clamp. When installing in any other orientation,
you must use a closed-type rigging clamp such as half-
coupler clamp (see illustration on right) that completely
encircles the truss chord.
To clamp the fixture to a truss:
1. Check that the rigging structure can support at least 10 times the weight
of all fixtures and equipment to be installed on it.

12 RUSH MH 4 Beam User Manual
2. Block access under the work area.
3. The fixture is supplied with two omega-type brackets to which rigging
clamps can be attached. Check that the rigging clamps are undamaged
and approved for the fixture’s weight. Bolt a rigging clamp securely to
each bracket. The bolts used must be M12, grade 8.8 steel minimum, and
fastened with self-locking nuts.
4. Fasten the omega brackets to the base of the fixture
using the brackets’ quarter-turn fasteners. Turn quarter-
turn fasteners a full 90° to lock them (see illustration on
right).
5. Working from a stable platform, hang the fixture on the truss and fasten
the rigging clamps onto the truss.
6. Secure the fixture with a safety cable as directed below.
7. Check that the head will not collide with other fixtures or objects.
Securing with a safety cable
Secure the fixture with a safety cable (or
other secondary attachment) that is
approved for the weight of the fixture so
that the safety cable will hold the fixture if
a primary attachment fails.
Loop the safety cable through the cutout
in the fixture’s baseplate (arrowed in
illustration on right) and around a secure
anchoring point.

RUSH MH 4 Beam User Manual 13
AC power
Read ‘Safety information’ on page 4 before connecting the
fixture to AC mains power.
Warning! The mains power input cable supplied with the
fixture is rated 6 A and can supply only one fixture with
mains power. Do not connect any device to the fixture’s
MAINS OUT power throughput socket when using this
input cable. If you want to connect other fixtures to the
MAINS OUT socket, see ‘Linking fixtures to power in a
chain’ on page 14.
For protection from electric shock, the fixture must be grounded
(earthed). The power distribution circuit must be equipped with
a fuse or circuit breaker and ground-fault (earth-fault) protection.
Socket outlets or external power switches used to supply the
fixture with power must be located near the fixture and easily
accessible so that the fixtures can easily be disconnected from
power.
Do not insert or remove live Neutrik PowerCon connectors to apply or cut
power, as this may cause arcing at the terminals that will damage the
connectors.
Do not use an external dimming system to supply power to the fixture, as this
may cause damage to the fixture that is not covered by the product warranty.
The fixture can be hard-wired to a building electrical installation if you want to
install it permanently, or a power plug (not supplied) that is suitable for the
local power outlets can be installed on the power cable.
If you install a power plug on the power cable, follow the plug manufacturer’s
instructions and connect the wires in the power cable as shown in this table:
Earth, Ground or Neutral or NLive or L
US system Green White Black
EU system Yellow/green Blue Brown
The fixture has an auto-ranging power supply that accepts AC mains power at
100-240 V at 50/60 Hz. Do not apply AC mains power at any other voltage or
frequency to the fixture.

14 RUSH MH 4 Beam User Manual
Linking fixtures to power in a chain
If you obtain a 14 AWG / 1.5 mm2power input cable and 14 AWG / 1.5 mm2
throughput cables from Martin™ (see ‘Accessories’ on page 47), you can
relay mains power from one fixture to another by connecting fixtures to power
in a linked daisy-chain, MAINS OUT throughput socket to MAINS IN input
socket.
Using 14 AWG or 1.5 mm2cables from Martin™, you can link:
•Maximum five (5) RUSH MH 4 fixtures to power in a chain at 100-120 V, or
•Maximum ten (10) RUSH MH 4 fixtures to power in a chain at 200-240 V.
Fixture overview
1 - LEDs
The fixture has four LEDs on the front of the base: two are reserved for future
use; the other two are marked as follows:
Power Power on
DMX Valid DMX signal present
2 – Display
3 – Buttons
MENU
•Activate the menu mode functions, or
•Return to the previous level of the menu
structure, or
•Press and hold to exit the menus
DOWN Go down a menu branch
UP Go up a menu branch

RUSH MH 4 Beam User Manual 15
ENTER Confirm the selected menu item
4 - DMX XLR input/output sockets:
5 – AC mains power IN
6 – AC mains power OUT
7 – Primary (mains power) fuse F1
DMX data link
A DMX 512 control data link is required in order to control the fixture via DMX.
The fixture has 3-pin and 5-pin XLR connectors for DMX data input and output
(throughput).
The number of daisy-chained fixtures is limited by the number of DMX
channels required by the fixtures in relation to the maximum 512 channels
available in one DMX universe. Note that if independent control of a fixture is
required, it must have its own DMX channels. Fixtures that are required to
behave identically can share the same DMX address and channels. To add
more fixtures or groups of fixtures when the above limit is reached, add a
DMX universe and another daisy-chained link.

16 RUSH MH 4 Beam User Manual
Note that if a fixture loses its DMX signal it will maintain its current effect until
powered off or reset.
Tips for reliable data transmission
Use shielded twisted-pair cable designed for RS-485 devices: standard
microphone cable cannot transmit control data reliably over long runs. 24
AWG cable is suitable for runs up to 300 meters (1000 ft.). Heavier gauge
cable and/or an amplifier is recommended for longer runs. The pin-out on all
connectors is pin 1 = shield, pin 2 = cold (-), and pin 3 = hot (+). Pins 4 and 5
in the 5-pin XLR connectors are not used in the fixture but are available for
possible additional data signals as required by the DMX512-A standard.
Standard pin-out is pin 4 = data 2 cold (-) and pin 5 = data 2 hot (+).
To split the link into branches, use a splitter such as the Martin DMX 5.3
Splitter™ or Martin RDM 5.5 Splitter™. Terminate the link by installing a
termination plug in the output socket of the last fixture. The termination plug,
which is a male XLR plug with a 120 Ohm, 0.25-Watt resistor soldered
between pins 2 and 3, “soaks up” the control signal so it does not reflect and
cause interference. If a splitter is used, terminate each branch of the link.
Connecting the data link
To connect the fixture to data:
1. Connect the DMX data output from the controller to the first fixture’s male
XLR DMX input connector.
2. Connect the first fixture’s DMX output to the DMX input of the next fixture
and continue connecting fixtures output to input. Terminate the last fixture
on the link with a DMX termination plug.
Fixture setup
This section explains the options available to change the fixture’s settings.
Settings are made using the menus available in the control panel and are
retained when the fixture is powered off.
A complete map of the control menu structure and brief explanations of their
purposes can be found in ‘Control menus’ on page 38.
Using the control panel
•To access the control menus in the control panel, press the MENU button.
•Navigate the menu structure using the ENTER, DOWN and UP buttons.
•Scroll between menu items using the DOWN and UP buttons.

RUSH MH 4 Beam User Manual 17
•Select any required menu option using the ENTER button.
•To return to the previous level in the menu structure without making a
change, press the MENU button.
•To exit the menus, press and hold the MENU button.
DMX function settings
DMX function settings include the DMX address and DMX mode.
DMX addressing
The fixture can be controlled using signals sent by a DMX controller over 13
DMX channels. The DMX address, also known as the start channel, is the first
channel used to receive instructions from the DMX controller. Each DMX-
controlled fixture must have a DMX address set. If a fixture has its DMX
address set to 1and you want to use all 15 channels, then the next fixture can have
a DMX address of 16, the next 31, then 46, and so on until the 512 channels
in one DMX universe have all been allocated.
For independent control, each fixture must be assigned its own DMX
channels. Two fixtures of the same type may share the same address, if
identical behavior is desired. Address sharing can be useful for diagnostic
purposes and symmetric control, particularly when combined with the inverse
pan and tilt options.
To set the fixture’s DMX address:
1. Select DMX FUNCTIONS in the control panel and press ENTER.
2. Use the UP and DOWN buttons to select DMX ADDRESS and press
ENTER. The fixture’s current DMX address will blink in the display.
3. Use the UP and DOWN buttons to select a new address (1 to 512).
4. Once the address has been selected, press ENTER to set it (or to return
to the previous menu level without making a change, press MENU).
DMX State
The DMX STATE setting in the control menu determines how the fixture
behaves when it is powered on but not receiving a DMX signal. You can set
the fixture to black out or to hold the effect it was displaying when the DMX
signal stopped.
To adjust the setting:
1. Select DMX STATE and press ENTER. The currently set option will blink
in the display.

18 RUSH MH 4 Beam User Manual
2. Use the DOWN and UP buttons to select BLACKOUT (fixture blacks out)
or HOLD (fixture shows the last effect it was displaying before the DMX
signal stopped).
3. Press ENTER to save your selection (or press MENU to exit without
saving any changes).
The fixture is set to BLACKOUT by default.
Viewing DMX values received
DMX FUNCTIONS View DMX value lets you see the DMX values the
fixture is receiving on each of the DMX channels.
Fixture settings
Pan and/or tilt inversion
The FIXTURE SETTINGS PAN INVERSE and TILT INVERSE menus let
you remap the fixture so that the direction of pan and/or tilt are reversed.
These settings are useful for symmetrical effects with multiple fixtures, or
when coordinating the movement of fixtures that are floor-mounted and rigged
upside down.
Pan/tilt feedback
If you enable pant and tilt feedback in the FIXTURE SETTINGS P/T
FEEDBACK menu, the fixture will correct its pan and tilt positions if it detects
a position error.
Blackout during effect changes or movement
You can set the fixture to deploy the shutter to black out light output during
pan and tilt movement, gobo changes and/or color changes. Blackouts are
disabled by default.
Lamp settings
Lamp on/off
To manually power the lamp on or off:
1. Select LAMP SETTINGS and press ENTER to confirm.
2. Use the DOWN and UP buttons to scroll to ON/OFF and press ENTER to
confirm.
3. Use the DOWN and UP buttons to select ON or OFF.

RUSH MH 4 Beam User Manual 19
4. Press ENTER to confirm and power the lamp on or off (or to return to the
previous level of the menu structure without making a change, press
MENU).
State/power on
To set the lamp to power on automatically when the fixture is powered on:
1. Select LAMP SETTINGS and press ENTER to confirm.
2. Use the DOWN and UP buttons to select STATE/POWER ON and press
ENTER to confirm.
3. Use the DOWN and UP buttons to select ON or OFF.
4. Press ENTER to confirm (or to return to the previous menu level without
making a change, press MENU).
DMX lamp control
The lamp can be controlled remotely by DMX. The following options are
available:
•OFF VIA DMX allows the lamp to be powered off by sending a DMX
command.
•ON IF DMX ON sets the lamp to power on automatically as soon as a
DMX signal is present.
•OFF IF DMX OFF sets the lamp to power off automatically as soon as a
DMX signal is not present
Ignition delay
If a large number of fixtures power their lamps on at the same time, voltage
drops can result. To spread the load across multiple fixtures, an ignition delay
of 0 to 255 seconds can be set, so that there is a delay between power on and
lamp on.
1. Select LAMP SETTINGS and press ENTER to confirm.
2. Use the DOWN and UP buttons to select IGNITION DELAY and press
ENTER to confirm.
3. Use the DOWN and UP buttons to specify a delay duration in seconds.
4. Press ENTER to confirm (or to return to the previous menu level without
making a change, press MENU).
Low-power delay
In a low-power delay, when a lamp off command is sent the lamp runs at half
power for a period before powering completely off:

20 RUSH MH 4 Beam User Manual
To adjust the low power setting:
1. Select LAMP SETTINGS and press ENTER to confirm.
2. Use the DOWN and UP buttons to select LOW POWER DELAY and press
ENTER to confirm.
3. Use the DOWN and UP buttons to specify a duration.
4. Press ENTER to confirm (or to return to the previous menu level without
making a change, press MENU).
Display settings
Invert display
Inverting the display is useful if the fixture is hung from a truss or from
elevation. To invert the display:
1. Select DISPLAY SETTINGS and press ENTER to confirm.
2. Use the DOWN and UP buttons to select DISPLAY INVERSE and press
ENTER to confirm.
3. Use the DOWN and UP buttons to select the YES (invert).
4. Press ENTER to confirm (or to return to the previous menu level without
making a change, press MENU).
Automatically turn off display backlight
The display backlighting remains on permanently by default when power is
applied to the fixture. If you prefer, you can enable Sleep mode, where the
backlighting goes off automatically when the buttons and menus have not
been used for a short period:
1. Select DISPLAY SETTINGS and press ENTER to confirm.
2. Use the DOWN and UP buttons to select BACKLIGHT AUTO OFF and
press ENTER to confirm.
3. Use the DOWN and UP buttons to select YES to enable automatic
dimming.
4. Press ENTER to confirm (or to return to the previous menu level without
making a change, press MENU).
Adjust backlight intensity
The brightness of the control panel display can be adjusted:
1. Select DISPLAY SETTINGS and press ENTER to confirm.
2. Use the DOWN and UP buttons to select BACKLIGHT INTENSITY and
press ENTER to confirm.