Snapshot
Use on Dimmer
Outdoor Use
Sound Activated
DMX
Master/Slave
Auto-ranging
Power Supply
Replaceable Fuse
User Serviceable
Duty Cycle
User Manual
3000 N 29th Ct, Hollywood, FL 33020 U.S.A.
(800) 762-1084 – (954) 929-1115
FAX (954) 929-5560
1. BEFORE YOU BEGIN
What is included
1 x LEDrain™ 38C
1 x Warranty Card
1 x User Manual
Unpacking Instructions
Immediately upon receiving a fixture, carefully unpack the carton, check the contents to ensure that
all parts are present, and have been received in good condition. Notify the shipper immediately and
retain packing material for inspection if any parts appear damaged from shipping or the carton itself
shows signs of mishandling. Save the carton and all packing materials. In the event that a fixture
must be returned to the factory, it is important that the fixture be returned in the original factory box
and packing.
Manual Conventions
CHAUVET® manuals use the following conventions to differentiate certain types of information from
the regular text.
MEANING
CONVENTION
[10]
<Menu>
1~512
50/60
A DIP switch to be configured
A key to be pressed on the fixture’s control panel
A range of values
A set of values of which only one can be chosen
A menu option not to be modified (for example, showing the operating
mode/current status)
Settings
MENU > Settings
A sequence of menu options to be followed
A value to be entered or selected
ON
Icons
This manual uses the following icons to indicate information that requires special attention on the part
of the user.
MEANING
ICONS
This paragraph contains critical installation, configuration or operation
information. Failure to comply with this information may render the fixture
partially or completely inoperative, cause damage to the fixture or cause
harm to the user.
This paragraph contains important installation or configuration information.
Failure to comply with this information may prevent the fixture from
functioning correctly.
This paragraph reminds you of useful, although not critical, information.
1. Before You Begin
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Safety Instructions
Please read these instructions carefully. It includes important
information about the installation, usage and maintenance of this
product.
Please keep this User Manual for future consultation. If you sell the unit to another user, be sure that
they also receive this instruction booklet.
Always make sure that you are connecting to the proper voltage, and that the line voltage you are
connecting to is not higher than that stated on the decal or rear panel of the fixture.
This product is intended for indoor use only! To prevent risk of fire or shock, do not expose fixture to
rain or moisture.
Make sure there are no flammable materials close to the unit while operating.
The unit must be installed in a location with adequate ventilation, at least 20 in (50 cm) from adjacent
surfaces. Be sure that no ventilation slots are blocked.
Always disconnect from power source before servicing or replacing fuse and be sure to replace with
same fuse source.
Secure fixture to fastening device using a safety chain.
Maximum ambient temperature (Ta) is 104° F (40° C). Do not operate fixture at temperatures higher
than this.
In the event of a serious operating problem, stop using the unit immediately. Never try to repair the
unit by yourself. Repairs carried out by unskilled people can lead to damage or malfunction. Please
contact the nearest authorized technical assistance center.
Never connect the device to a dimmer pack.
Make sure the power cord is never crimped or damaged.
Never disconnect the power cord by pulling or tugging on the cord.
Never carry the fixture directly from the cord. Always use the hanging/mounting bracket.
Avoid direct eye exposure to the light source while it is on.
1. Before You Begin
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2. INTRODUCTION
Features
3 or 7-channel DMX-512 LED PAR can
Operating modes:
3-channel: RGB control
7-channel: RGB, macros, run/strobe speed, automatic/sound, dimmer
Static colors and RGB color mixing with or without DMX controller
Built-in automated programs via master/slave or DMX with variable speed
Built-in sound activated programs via master/slave or DMX
Pulse effect with adjustable speed
Additional Features
Additional power output: max 37 units
Double-bracket yoke doubles as floor stand
Product Overview
DIP Switches
DMX Out
Power In
Power Out
Fuseholder
DMX In
Microphone
Sensitivity
Adjustment
Knob
Microphon
2. Introduction
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3. SETUP
AC Power
This fixture runs on 100~240 VAC, 50/60 Hz. Before powering on the unit, make sure the line voltage
to which you are connecting it is within the range of accepted voltages.
Always connect the fixture to a switched circuit. Never connect the fixture to a rheostat
(variable resistor) or dimmer circuit, even if the rheostat or dimmer channel is used only as a 0
to 100% switch.
To determine the power requirements for a particular fixture, see the label affixed to the back plate of
the fixture or refer to the fixture’s specifications chart. A fixture’s listed current rating indicates its
average current draw under normal conditions.
Always connect the fixture to a circuit with a suitable electrical ground.
Power Linking
This fixture contains power linking via the Edison outlet located in front of the power input cable.
Please see the diagram below for further explanation.
The maximum quantity of fixtures that may be linked is 37.
Additional power
link out
Fixture 1
Fixture 2
The power linking shown in this document is for the Chauvet® North American version ONLY!
Therefore, it is the customer’s responsibility to check with the Dealer/Distributor regarding
power linking on the local version of the product. Connections and availability may change,
depending on the power requirements and/or regulations of each country/region.
3. Setup
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Mounting
Orientation
The LEDrain™ 38C may be mounted in any safe position provided there is adequate room for
ventilation.
Rigging
Be sure that the structure can support the weight of the fixture. Please see the “Technical
Specifications” section of this manual for a detailed weight listing. Mount the fixture securely. This
may be done with a screw, nut and bolt, or a hanging clamp. The hole in each bracket is 13 mm in
size. When rigging consider routine maintenance and control panel access. Please see the following
steps for installation.
Be sure to orient the gel frame release so that it is pointing up. Please see the diagram
below for a visual reference.
If the power link out is intended to be used with multiple fixture, take into account the length
of each power cable, and mount the fixtures close enough to one another to accommodate
for this.
When aiming the fixtures, you may use the bracket adjustment knob. Loosen the knob,
adjust to the desired angle, and then tighten the knob by turning clockwise. Do not use
tools for this step, as it may cause damage.
There is a secondary portion of the bracket, which may be used primarily for floor standing
positions.
Safety cables must always be used.
Mounting
Bracket
Secondary bracket
(used primarily for
standing position)
3. Setup
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4. OPERATING INSTRUCTIONS
Configuring the Starting Address
Each fixture requires a starting address from 1~512. A fixture requiring one or more channels for
control begins to read the data on the channel indicated by the starting address. For example, a
fixture that uses seven DMX channels and is addressed to start on DMX channel 100, will read data
from channels: 100, 101, 102, 103, 104, 105 and 106. Choose the starting addresses for each fixture
so that the channels used do not overlap. In addition, you should note the starting address selected
for future reference.
The LEDrain™ 38C fixture uses seven or three DMX channels. If this is your first time using DMX, we
recommend reading the “DMX Primer” section in the “Appendix”.
DMX Operation
This is the operating mode which will allow for control with an external DMX controller. You must set
the starting address for this mode. If this is your first time using DMX, then it is recommended that
you refer to the “DMX Primer” section in the “Appendix” of this manual.
Mode
DIP switches
DMX
1~9 = set to the DMX starting address
10 = Off
Accessing the 2 Personalities
There are two personalities for this fixture. There is the standard 7-channel personality with strobe
and color macros, and then there is the basic 3-channel RGB personality. Please see the DIP switch
settings to access each of these personalities below.
Mode
DIP switches
7-CH
3-CH
11-12 = Off
11 = On
5. Appendix
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Master/Slave Mode (Sound-Active, Auto Mode, Static Colors)
This mode allows a single unit to run a standalone program, while 1 or more other units follow the
same operation. This requires the fixtures to be linked with DMX cables. Please see the section on
Fixture Linking.
1) The Master unit may be operated in Automatic, Sound-Active, and Static Colors.
2) Adjust the DIP switches to the Slave position on the slave units, and they will react the same as
the Master. See below for DIP switch assignment.
Mode
DIP switches
Slave
2~11 = Off
1
= On
Strobe Speed
This fixture has a strobe speed adjustment which will decrease the maximum speed. Please see the
setting below for lowering the strobe rate for compatibility mode.
Mode
DIP switches
12 = On
Standard mode
6 Hz~18 Hz:
Decreased Speed
2 Hz~6 Hz:
12 = Off
5. Appendix
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Standalone Operation
Automatic
This fixture has a preprogrammed color fade program. This is accessed via the DIP switches on the
back of the fixture, and the speed may be increased, as well. Please see the chart below for further
explanation.
Mode
DIP switches
Master Auto
Increase Speed
7, 9, 10 = On
1~6 = On (add more DIP switches to reach higher speed)
Sound-Active
This fixture has preprogrammed sound triggered chases. These are accessed via the DIP switches
on the back of the fixture, and the sensitivity may be adjusted using the audio adjustment knob.
Please see the chart below for further explanation.
Mode
DIP switches
Master Sound
10 = On
Static Colors
This unit has separate DIP switches for each of the 3 colors (red, green, and blue). These are
accessed via the DIP switches on the back of the fixture. Each of the 3 colors may be mixed with
different intensities. Please see the chart below for further explanation.
Mode
DIP switches
8, 9, 10 = On
1~2 = On
Master Static
Static (Red)
Static (Green)
Static (Blue)
3~4 = On
5~6 = On
Fixture Linking
In order to use this fixture in a DMX or master/slave operation, you must daisy chain, using DMX
cables to link from one fixture to another.
Additional signal
link out
5. Appendix
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DMX Channel Values
7-CH Mode
CHANNEL
1
VALUE
000 255
000 255
FUNCTION
Red
Dimmer: 0%~100%
Green
Dimmer: 0%~100%
2
3
Blue
Dimmer: 0%~100%
000 255
Color Macros (overrides CH.1~3)
No Function
Color Macros
4
5
000 015
016 255
Speed (CH.6 @ values 32~223)
Slow~Fast
000 255
Strobe (RGB & Macro only)
No Function
Slow~Fast
000 015
016 255
Mode
000 031
032 063
064 095
096 127
128 159
160 191
192 223
224 255
RGB mode
Pulse effect 0%~100% (using RGB faders)
Pulse effect 100%~0% (using RGB faders)
Pulse effect 100%~0%~100% (using RGB faders)
Auto fade transition
Auto snap transition (3 colors)
Auto snap transition (7 colors)
Sound triggering mode
When CH.6 is set @ 032~223,
CH.5 controls the speed.
6
7
Dimmer
000 255
Intensity (RGB/Macro modes): 0%~100%
3-CH Mode
CHANNEL
1
VALUE
000 255
000 255
000 255
FUNCTION
Red
Dimmer: 0%~100%
Green
Dimmer: 0%~100%
2
3
Blue
Dimmer: 0%~100%
5. Appendix
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5. APPENDIX
DMX Primer
There are 512 channels in a DMX connection. Channels may be assigned in any manner. A fixture
capable of receiving DMX will require one or a number of sequential channels. The user must assign
a starting address on the fixture that indicates the first channel reserved in the controller. There are
many different types of DMX controllable fixtures and they all may vary in the total number of
channels required. Choosing a start address should be planned in advance. Channels should never
overlap. If they do, this will result in erratic operation of the fixtures whose starting address is set
incorrectly. You can however, control multiple fixtures of the same type using the same starting
address as long as the intended result is that of unison movement or operation. In other words, the
fixtures will be slaved together and all respond exactly the same.
DMX fixtures are designed to receive data through a serial Daisy Chain. A Daisy Chain connection is
where the DATA OUT of one fixture connects to the DATA IN of the next fixture. The order in which
the fixtures are connected is not important and has no effect on how a controller communicates to
each fixture. Use an order that provides for the easiest and most direct cabling. Connect fixtures
using shielded two conductor twisted pair cable with three pin XLR male to female connectors. The
shield connection is pin 1, while pin 2 is Data Negative (S-) and pin 3 is Data positive (S+).
General Maintenance
To maintain optimum performance and minimize wear, fixtures should be cleaned frequently. Usage
and environment are contributing factors in determining frequency. As a general rule, fixtures should
be cleaned at least twice a month. Dust build up reduces light output performance and can cause
overheating. This can lead to reduced lamp life and increased mechanical wear. Be sure to power off
fixture before conducting maintenance.
Unplug fixture from power.
Use a vacuum or air compressor and a soft brush to remove dust collected on external
vents.
Clean all glass when the fixture is cold with a mild solution of glass cleaner or Isopropyl
Alcohol and a soft lint free cotton cloth or lens tissue.
Apply solution to the cloth or tissue and drag dirt and grime to the outside of the lens.
Gently polish optical surfaces until they are free of haze and lint.
The cleaning of external optical lenses and/or mirrors must be carried out periodically to optimize light
output. Cleaning frequency depends on the environment in which the fixture operates. Damp, smoky
or particularly dirty surroundings can cause greater accumulation of dirt on the unit’s optics. Clean
with soft cloth using normal glass cleaning fluid. Clean the external optics at least every 20 days.
Clean the fixture at least every 30/60 days.
Always dry the parts carefully after cleaning them.
Never spin a fan using compressed air.
5. Appendix
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Data Cabling
To link fixtures together you must obtain data cables. You can purchase CHAUVET® certified DMX
cables directly from a dealer/distributor or construct your own cable. If you choose to create your own
cable please use data-grade cables that can carry a high quality signal and are less prone to
electromagnetic interference.
DMX Data Cable
Use a Belden© 9841 or equivalent cable which meets the specifications for EIA RS-485 applications.
Standard microphone cables cannot transmit DMX data reliably over long distances. The cable must
have the following characteristics:
Type:
shielded, 2-conductor twisted pair
30 pF/ft
Maximum capacitance between conductors:
Maximum capacitance between conductor and shield:
Maximum resistance:
55 pF/ft
20 ohms/1000 ft
100 ~ 140 ohms
Nominal impedance:
Cable Connectors
Cabling must have a male XLR connector on one end and a female XLR connector on the other end.
120 ohm ¼ W
DMX connector configuration
1
3
2
resistor between
pin 2 (DMX -) and
pin 3 (DMX +) on
the output of the
last fixture
COMMON
DMX +
1
1
INPUT
3
OUTPUT
3
2
2
DMX -
To avoid signal transmission problems
and interference, it is always advisable to
connect a DMX signal terminator.
Do not allow contact between the common and the fixture’s chassis ground. Grounding the
common can cause a ground loop, and your fixture may perform erratically. Test cables with
an ohm meter to verify correct polarity and to make sure the pins are not grounded or shorted
to the shield or each other.
Fixture Linking
You will need a serial data link to run light shows of one or more fixtures using a DMX controller or to
run synchronized shows on two or more fixtures set to a master/slave operating mode. The combined
number of channels required by all the fixtures on a serial data link determines the number of fixtures
the data link can support.
Fixtures on a serial data link must be daisy chained in one single line. To comply with the EIA-
485 standard, no more than 32 fixtures should be connected on one data link. Connecting
more than 32 fixtures on one serial data link without the use of a DMX optically-isolated
splitter may result in deterioration of the digital DMX signal.
Maximum recommended serial data link distance: 500 m (1640 ft)
Maximum recommended number of fixtures on a serial data link: 32
5. Appendix
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3-Pin to 5-Pin Conversion Chart
If you use a controller with a 5-pin DMX output connector, you will need to use a 5-
pin to 3-pin adapter. The chart below details a proper cable conversion:
3-PIN TO 5-PIN CONVERSION CHART
Conductor
3-Pin Female (Output)
Pin 1
5-Pin Male (Input)
Pin 1
Ground/Shield
Data ( - ) signal
Data ( + ) signal
Not used
Pin 2
Pin 3
Pin 2
Pin 3
Pin 4
Pin 5
Not used
Universal DMX Controller
Setting up a DMX Serial Data Link
1. Connect the (male) 3-pin connector side of
the DMX cable to the output (female) 3-pin
connector of the controller.
2. Connect the end of the cable coming from
the controller which will have a (female)
3-pin connector to the input connector of the
next fixture consisting of a (male) 3-pin
connector.
This drawing
provides a general
illustration of the
DMX input/output
panel of a lighting
fixture.
3. Then, proceed to connect from the output as
stated above to the input of the following
fixture and so
Continue the link
5. Appendix
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Setting the Starting Address
This DMX mode enables the use of a universal DMX controller device. Each fixture requires a start address
from 1~512. A fixture requiring one or more channels for control begins to read the data on the channel
indicated by the start address. For example, a fixture that uses six DMX channels and was addressed to start
on DMX channel 100, would read data from channels: 100, 101, 102, 103, 104, and 105. Choose start
addresses so that the channels used do not overlap, and note the start address selected for future reference.
If this is your first time addressing a fixture using the DMX control protocol, we suggest jumping to the
“Appendix” section and reading the heading “DMX Primer”. It contains very useful information that will help you
understand its use.
General Troubleshooting
SYMPTOM
POSSIBLE CAUSE(S)
POSSIBLE ACTION(S)
Excessive circuit load
Check total load placed on the electrical circuit.
Breaker/Fuse
keeps blowing
Short circuit along the power
wires
Check for a short in the electrical wiring (internal and/or
external)
No power
Check for power on power outlet
Check power cord
Device does not
power up
Loose power cord
Wrong DMX addressing
Damaged DMX cables
Check Control Panel and unit addressing
Check DMX cables
Wrong polarity settings on the
controller
Fixture is not
responding to
DMX
Check polarity switch settings on the controller
Loose DMX cables
Faulty DMX interface
Faulty Main PCB
Check cable connections
Replace DMX input
Replace Main PCB
Non DMX cables
Use only DMX compatible cables
Install terminator as suggested
Install amplifier right after fixture with strong signal
Install an optically coupled DMX splitter after unit #32
Bouncing signals
Long cable / Low level signal
Too many fixtures
Loss of signal
Interference from AC wires
Keep DMX cables separated from power cables or
black lights
If you still have a problem after trying the above solutions, please contact CHAUVET Technical
Support.
Contact Us
World Wide
General Information
Technical Support
World Wide Web
CHAUVET®
3000 North 29th Court
Hollywood, FL 33020
voice: 954.929.1115
fax:
954.929.5560
toll free: 800.762.1084
CHAUVET®
3000 North 29th Court
Hollywood, FL 33020
voice: 954.929.1115 (Press 4)
fax:
954.929.5560 (Attention: Service)
5. Appendix
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Returns Procedure
Returned merchandise must be sent prepaid and in the original packing; call tags will not be issued.
Package must be clearly labeled with a Return Merchandize Authorization Number (RMA #).
Products returned without the RMA # will be refused. Call CHAUVET® and request an RMA # prior to
shipping the fixture. Be prepared to provide the model number, serial number and a brief description
of the cause for the return. Be sure to pack fixture properly; any shipping damage resulting from
inadequate packaging is the customer’s responsibility. As a suggestion, proper UPS packing or
double-boxing is always a safe method to use.
CHAUVET® reserves the right to use its own discretion to repair or replace product(s).
If you are given an RMA #, please include the following information on a piece of paper inside
the box:
1) Your name
2) Your address
3) Your phone number
4) The RMA #
5) A brief description of the symptoms
Claims
Damage incurred in shipping is the responsibility of the shipper; therefore, the damage must be
reported to the carrier upon receipt of merchandise. It is the customer's responsibility to notify and
submit claims with the shipper in the event that a fixture is damaged due to shipping. Any other claim
for items such as missing component/part, damage not related to shipping, and concealed damage,
must be made within seven (7) days of receiving merchandise.
5. Appendix
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Technical Specifications
WEIGHT & DIMENSIONS
Length..........................................................................................................................6.2 in (157 mm)
Width............................................................................................................................7.4 in (188 mm)
Height ........................................................................................................................11.2 in (284 mm)
Weight........................................................................................................................... 2.8 lbs (1.2 kg)
POWER
Auto-ranging Power Supply.............................................................................100~240 VAC, 50/60 Hz
Power Consumption @ 120 VAC, 60 Hz ...............................................10 W (0.2 A) max, 0.2 A inrush
Power Consumption @ 230 VAC, 50 Hz .................................................9 W (0.1 A) max, 0.2 A inrush
Power output.....................................................................................................................37 units max
Fuse..................................................................................................................................F 2 A, 250 V
LIGHT SOURCE
LED...................................................................... 75 x 10 mm (25 red, 25 green, 25 blue) 100,000 hrs
PHOTO OPTIC
Luminance @ 1 m.................................................................................................................. 1,033 lux
Beam Angle .................................................................................................................................... 15°
Field Angle...................................................................................................................................... 23°
THERMAL
Maximum ambient temperature......................................................................................104° F (40° C)
ORDERING INFORMATION
LEDrain™ 38C................................................................................................................LEDRAIN38C
WARRANTY INFORMATION
Warranty ........................................................................................................... 2-year limited warranty
Technical Specifications
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