Martin CX-2 User manual

CX-2
user manual
P/N 35000080

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Parts key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Lamp installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
AC power connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DIP-switch settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Data connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Basic service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
DMX protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
©1999 Martin Professional A/S, Denmark.
All rights reserved. No part of this manual may be
reproduced, in any form or by any means, without
permission in writing from Martin Professional A/S,
Denmark.
Printed in Denmark.
P/N 35000080, Rev. B

CX-2 user manual Introduction 3
I
NTRODUCTION
1
Thank you for selecting the Martin CX-2. The CX-2 is an automated profile
spotlight designed for a 250 watt halogen source. It provides separate color and
gobo/effect wheels, continuous electronic dimming, adjustable focus, strobe
effects, and multiple control options.
CX-2 SAFETY INFORMATION
Warning! This product is for professional use only. It is not for
household use.
This product presents risks of lethal or severe injury due to fire and heat, electric
shock, and falls. Read this manual before powering or installing the fixture,
follow the safety precautions listed below and observe all warnings in this manual
and printed on the fixture. If you have questions about how to operate the fixture
safely, please contact your Martin dealer or call the Martin 24-hour service
hotline at [phone].
To protect yourself and others from electric shock
• Disconnect the fixture from AC power before removing or installing the lamp,
fuses, or any part, and when not in use.
• Always ground (earth) the fixture electrically.
• Use only a source of AC power that complies with local building and electrical
codes and has both overload and ground-fault protection.
• Do not expose the fixture to rain or moisture.
• Refer any service operation not described in this manual to a qualified technician.
• Never operate the fixture with missing or damaged lenses and/or covers.

4 Introduction CX-2 user manual
To protect yourself and others from burns and fire
• Never attempt to bypass the thermostatic switch or fuses. Always replace
defective fuses with ones of the specified type and rating.
• Keep all combustible materials (for example fabric, wood, paper) at least 0.1
meters (4 inches) away from the fixture. Keep flammable materials well away
from the fixture.
• Replace the lamp if it becomes defective or worn out. When replacing the lamp,
allow the fixture to cool for at least 5 minutes before opening the fixture or
removing the lamp. Protect your hands and eyes with gloves and safety glasses.
• Do not illuminate surfaces within 0.3 meters (12 inches) of the fixture.
• Provide a minimum clearance of 0.1 meters (4 inches) around fans and air vents.
• Never place filters or other materials over the lens.
• The exterior of the fixture can reach temperatures up to 65° C (149° F). Allow the
fixture to cool for at least 5 minutes before handling.
• Do not modify the fixture or install other than genuine Martin parts.
• Do not operate the fixture if the ambient temperature (Ta) exceeds 40° C (104° F).
To protect yourself and others from injury due to falls
• When suspending the fixture above ground level, verify that the structure can hold
at least 10 times the weight of all installed devices.
• Verify that all external covers and rigging hardware are securely fastened and use
an approved means of secondary attachment such as a safety cable.
• Block access below the work area whenever installing or removing the fixture.
UNPACKING
The packing material is carefully designed to protect the fixture during shipment -
always use it to transport the fixture.
The CX-2 comes with:
• 1 3-meter, 3-wire IEC power cable
• 1 user manual

CX-2 user manual Parts key 5
P
ARTS KEY
2
1 focus lens
2 cover locks
3 air vent
4 safety cable holes
5 mounting bracket
6 air vents
7 AC input & main
fuse
8 DIP-switch
9 data output
10 data input
11 swivel locks
12 cooling fan

6 Lamp installation CX-2 user manual
L
AMP INSTALLATION
3
The CX-2 uses a 24V, 250W ELC halogen lamp. Two models are available, an
economical 300 hour lamp from Philips and a high-output 50 hour lamp from
Osram. Installing any other lamp may damage the fixture.
Allow the lamp to cool for at least 5 minutes before packing and moving the
fixture. To avoid possible damage, remove the lamp when shipping the fixture.
To install a lamp in the CX-2
Warning! Always disconnect the
fixture from AC power
and allow the fixture to
cool for 5 minutes
before installing a new
lamp.
1 Disconnect the fixture from
AC power. If replacing a hot
lamp, allow it to cool for 5
minutes before removing the
cover. The lamp cools faster
with the cover in place.
2 Release the 4 cover locks by
turning them a quarter-turn
counterclockwise. Lift the cover straight off.
3 To remove the lamp, grasp it by the reflector and pull it out of the holder. Pull
the socket straight back off the metal pins. Do not pull the wires.
4 Push the socket fully onto the pins of the new lamp.
5 Gently push the lamp into the holder until it snaps into place.
6 Replace the top cover. To lock the 4 cover locks, turn them a half to a quarter
turn clockwise until you feel them click.
Do not overtighten
.

CX-2 user manual AC power connection 7
AC
POWER CONNECTION
4
Warning! For protection from dangerous electric shock, the fixture must
be grounded (earthed). The AC mains supply shall have
overload and ground-fault protection.
Important! Check voltage setting before applying power. Do not connect
the CX-2 to an electrical dimmer system: doing so can damage
the electronics.
Before use verify that the fixture’s power supply is correctly tapped for the local
AC voltage. The default voltage setting is printed on the serial number label near
the AC input. The “EU” version may be set to 230 or 245 V AC and the “US”
version may be set to 110 or 120 V AC. Use the setting that is closest to the local
supply voltage.
To change the voltage setting
1 Disconnect the fixture from AC power.
Release the 4 cover locks by turning
them a quarter-turn counterclockwise.
Lift the cover straight off.
2 Locate and disconnect plug PL124 on
the back edge of the printed circuit
board. It has red, yellow, and blue
wires.
3 To select 230 V AC (EU version) or 110
V AC (US version), flip and move the
plug
up
so that the
red
wire connects
to the
top
pin.
4 To select 245 V AC (EU version) or 120
V AC (US version), flip and move the
plug
down
so that the
red
wire
connects to the
bottom
pin.
5 Replace the top cover before applying
power.
red
red
Setting for
110 V (US) / 230 V (EU)
Setting for
120 V (US) / 245 V (EU)

8 AC power connection CX-2 user manual
To install a plug on the mains lead
The fixture’s mains lead must be fitted with a grounding-type cord cap that
fits your power distribution cable or outlet. Consult a qualified electrician if
you have any doubts about proper installation.
Important! Verify that the feed cables are undamaged and rated for the
current requirements of all connected devices before use.
• Following the cord cap manufacturer’s instructions, connect the yellow and
green wire to ground (earth), the brown wire to live, and the blue wire to
neutral. The table below shows some pin identification schemes.
Wire Pin Marking Screw color
brown live “L” yellow or brass
blue neutral “N” silver
yellow/green ground green

CX-2 user manual Installation 9
I
NSTALLATION
5
The CX-2 can be fastened directly to a suitable surface or to a rigging clamp by
means of its adjustable mounting bracket.
Do not lay the fixture flat on its mounting bracket
arms or position it so that there is less than 10 cm
(4 in.) clearance around the fan and air vents.
For maximum lamp life, do not place the fixture
directly on or beside a speaker cabinet or other
source of strong vibrations.
To rig the CX-2
Warning! Always use a secure means of secondary attachment. Block
access below the work area before proceeding.
1 Verify that the clamp (not included) is undamaged and can bear at least 10
times the fixture’s weight. Bolt the clamp securely to the bracket with a grade
8.8 (minimum) M12 bolt and lock nut, or as recommended by the clamp
manufacturer, through the 13 mm hole in the center of the mounting bracket.
2 If permanently installing the fixture, verify that the hardware (not included)
and mounting surface can bear at least 10 times the fixture’s weight. The four
6.2 mm holes and/or the 13 mm hole in the mounting bracket may be used.
3 Verify that the structure can support at least 10 times the weight of all
installed fixtures, clamps, cables, auxiliary equipment, etc.
4 Working from a stable platform, clamp or fasten the fixture to the structure.
5 Install a safety cable that can hold at least 10 times the weight of the fixture
through/over the support and through a hole in one of the aluminum arms.
6 Loosen the swivel locks and tilt the fixture to the desired angle. Turn the
swivel locks clockwise to tighten. If a swivel lock does not tighten fully, pull
the handle out, turn it counterclockwise, and retighten. Repeat as necessary.
7 Verify that the fixture is located at least 0.3 meters (12 in.) away from the
surface to be illuminated and at least 0.1 meters (4 in.) from any combustible
materials. Verify that the clearance around the fan and air vents is at least 0.1
meters (4 in.). Verify that there are no flammable materials nearby.

10 DIP-switch settings CX-2 user manual
DIP-
SWITCH SETTINGS
6
This section describes how to select the DMX address and special settings using
the DIP-switch on the end panel.
Important! Disconnect the fixture from AC power before changing the
DIP-switch setting. Changes take effect after the fixture has
been turned off and back on.
DMX ADDRESS SELECTION
If the CX-2 is to be used with a DMX protocol controller, then the DIP-switch
must be set to a DMX control address. The address, also known as the start
channel, is the first channel used to receive instructions from the controller. The
CX-2 uses 4 channels for full DMX operation. For independent control, each
fixture must be assigned its own address and non-overlapping control channels.
Two CX-2s may share the same address only if they are to respond identically:
they will receive the same instructions and individual control will not be possible.
To set the DMX address
1 Select an address for the fixture on your controller.
2 Look up the DIP-switch setting for the address on page 11.
3 Disconnect the fixture from AC power.
4 Set pins 1 through 9 to the ON (1) or OFF (0) position as listed in the table.
5 Set pin 10 to the OFF position.
6 Set pin 11 to the OFF position for full 4-channel DMX operation or to the ON
position for 1-channel DMX operation.

CX-2 user manual DIP-switch settings 11
DIP-SWITCH ADDRESS TABLE
Find the address in the table below. Read the settings for pins 1 - 5 to the left and
read the settings for pins 6 - 9 above the address. “0” means OFF and “1” means
ON.
Important! Pins 10 and 11 must be OFF for full DMX control. Pin 10 must
be OFF and pin 11 must be ON for 1-channel DMX control.
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12 DIP-switch settings CX-2 user manual
SPECIAL SETTINGS
DIP-switch pins 1 - 9 are used to select special options in stand-alone and
master/slave mode. To enable these options, pin 10 must be ON.
Pin 11 toggles between 1 and 4 channel DMX control. It must be OFF for
master/slave operation.
Lamp life can be extended by reducing the voltage slightly. Set DIP-switch pin 12
to ON for longer lamp life, or OFF for full output intensity.
Note: the fixture shall be disconnected from AC power when changing DIP-switch
settings. Changes take effect after the fixture has been turned off.
Important! Pin 10 must be ON to enable special settings on pins 1 - 9.
Pin Setting Effect
1 ON Music trigger
OFF Automatic trigger
2 ON Stand-alone mode on, single or master fixture
OFF Stand-alone mode off / slave fixture
3 ON Test program for service use
OFF Normal operation
4 ON Slow color and gobo change
OFF Fast color and gobo change
5 ON No effect
OFF No effect
6 ON Random slave color wheel position (set on slave fixture)
OFF Slave color wheel position same as master
7 ON Random slave gobo wheel position (set on slave fixture)
OFF Slave gobo wheel position same as master
8 ON Invert slave color wheel position (set on slave fixture)
OFF Slave color wheel position same as master
9 ON Invert slave gobo wheel position (set on slave fixture)
OFF Slave gobo wheel position same as master
10 ON Enable special settings with pins 1 - 9
OFF Enable DMX address with pins 1 - 9
11 ON 1-channel mode on
OFF 1-channel mode off
12 ON Reduced power / longer lamp life
OFF Full power / maximum intensity

CX-2 user manual Data connection 13
D
ATA CONNECTION
7
This section describes how to connect fixtures to a controller.
RECOMMENDED CABLE
A reliable data connection begins with the right cable. Standard microphone
cable cannot transmit DMX data reliably over long runs. For best results, use
cable specifically designed for RS-485 applications. Your Martin dealer can
supply high quality cable in various lengths.
CONNECTIONS
The CX-2’s XLR data sockets are wired with pin 1 to ground, pin 2 to signal -
(cold), and pin 3 to signal + (hot). This is the standard pin assignment for DMX
devices.
One or more adaptor cables may be required to connect the CX-2 to the controller
and/or other lights because many devices have 5-pin connectors and others may
have reversed signal polarity, that is, pin 2 hot and pin 3 cold.
Phase-Reversing
Adaptor
Male Female
1
2
3
1
2
3
3-pin to 3-pin
P/N 11820006
Adaptor
Male Female
1
2
3
4
5
1
2
3
5-pin to 3-pin
P/N 11820005
Adaptor
Male Female
1
2
3
1
2
3
4
5
3-pin to 5-pin
P/N 11820004

14 Data connection CX-2 user manual
To connect the data link
1 Connect a data cable to the controller’s data output. If controller has a 5-pin
output, use a 5-pin male to 3-pin female adaptor cable (P/N 11820005).
2 Lead the data cable from the controller to the first fixture. Plug the cable into
the fixture’s data input.
3 Connect the output of the fixture closest to the controller to the input of the
next fixture. If connecting to a fixture with reversed-polarity (pin 3 cold),
insert a phase-reversing cable between the two fixtures.
4 Continue connecting fixtures output to input. Up to 32 devices may be
connected on a serial link.
5 Terminate the link by inserting a male termination plug (P/N 91613017) into
the data output of the last fixture. A termination plug is simply an XLR
connector with a 120 ohm, 0.25 W resistor soldered across pins 2 and 3.
Male XLR
1
2
3
Male
P/N 91613017
120
Female XLR
1
2
3
Female
120
Termination PlugTermination Plug
P/N 91613018

CX-2 user manual Operation 15
O
PERATION
8
FULL DMX OPERATION
For DMX operation, the CX-2 must be connected to a DMX controller as
described under “Data connection” on page 13. DIP-switch pins 1 - 9 must be set
to the DMX address as described on page 10. Pins 10 and 11 must be set to OFF.
DMX CHANNEL DESCRIPTION
See also the DMX protocol on page 21.
Channel 1 controls the light intensity and the strobe rate. It also allows you to
execute a “stand-alone” program with random color and gobo change using
automatic or music trigger.
All effect wheels are reset to their home position when the fixture is powered up;
they can also be reset from the controller by sending a reset command on channel
1.
Channel 2 controls the position of the color wheel. When set to 100 percent, the
wheel moves to random positions using the trigger selected on channel 1.
Channel 3 controls the position of the gobo wheel. When set to 100 percent, the
wheel moves to random positions using the trigger selected on channel 1.
Channel 4 controls the speed of effect wheel rotation, allowing you to vary the
speed on controllers without cross-faders. If your controller has cross-faders, and
you use them, then set channel 4 to the “tracking” speed (0 percent).
1-CHANNEL DMX OPERATION
The CX-2 may be operated in 1-channel mode with the MC-1 or any DMX
controller. For 1-channel operation, connect the controller as described on page
13. DIP-switch pin 11 must be set to ON.
If using the MC-1, select DMX channel 1. If using a
DMX controller, any channel within the controller’s
range may be assigned.
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16 Operation CX-2 user manual
The single-channel functions are shown below.
STAND-ALONE OPERATION
The CX-2 automatically operates in stand-alone mode with music trigger if there
is no control signal.
Operation can be modified using the special settings described on page 12. To
enable the special settings, DIP-switch pin 10 must be ON.
Important! The fixture transmits control signals on the data link when
operated in stand-alone mode (with DIP-switch pins 2 and 10
ON). To prevent damage to the electronics, do not connect a
stand-alone fixture to other stand-alone fixtures or to a
controller.
MASTER / SLAVE OPERATION
Multiple CX-2s can be connected together, without a controller, for synchronized
“master/slave” operation in which the slave fixtures mimic the behavior of the
master fixture.
To connect units for master / slave operation
1 Disconnect all fixtures from AC power.
2 Connect the output of one CX-2 to the input of the next CX-2.
3 Connect additional CX-2s output to input. Up to 32 may be connected.
4 Terminate the link on both ends by inserting a female termination plug into
the data input of the first fixture and a male termination plug into the data
output of the last fixture. A termination plug is simply an XLR connector with
a 120 ohm, 0.25 W resistor soldered across pins 2 and 3.
DMX value Percent Function
0 - 10
11 - 20
21 - 80
81 - 115
116 - 140
141 - 175
176 - 210
211 - 255
0 - 4
5 - 7
8 - 31
32 - 45
46 - 55
56 - 68
69 - 82
83 - 100
Blackout (light off)
Open (light on)
Strobe
Random action with slow music trigger
Random action with medium music trigger
Random action with fast music trigger
Random action with random music trigger
Manual trigger area, crossover at 240 (94%)

CX-2 user manual Operation 17
To set the master
Important! Set only 1 fixture as master (with DIP-switch pin 2 and 10 ON):
errors and damage can occur if there is more than 1 master.
1 Set DIP-switch pins 2 and 10 to ON.
2 Set DIP-switch pins 3, 5, 6, 7, 8, 9, and 11 to OFF.
3 Set DIP-switch pins 1, 4, and 12 ON or OFF, as
desired, to select the options described on page 12.
To set a slave
OPTION 1 (SPECIAL OPTIONS DISABLED)
1 Set DIP-switch pin 1 to ON.
2 Set pins 2 - 11 to OFF.
3 Set pin 12 ON for longer lamp life or OFF for higher
intensity.
OPTION 2 (SPECIAL OPTIONS ENABLED)
1 Set DIP-switch 10 to ON.
2 Set pins 1, 2, 3, 4, 5 and 11 to OFF.
3 Set DIP-switch pins 6, 7, 8, 9, and 12 ON or OFF, as
desired, to select the options described on page 12.
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18 Basic service CX-2 user manual
B
ASIC SERVICE
9
The CX-2 requires simple routine maintenance. The maintenance schedule
depends heavily on the operating environment; please consult a Martin service
technician for recommendations.
Any service procedure not described here should be referred to a qualified
technician.
Important! Excessive dust, grease, and smoke fluid buildup degrades
performance and causes overheating and damage to the
fixture that is not covered by the warranty.
Warning! Disconnect the fixture from AC power before removing any
cover.
CLEANING
To clean optical components
Use care when cleaning optical components. The surface of the color filters is
fragile and small scratches may be visible.
1 Disconnect the fixture from AC power and allow the components to cool
completely.
2 Release the 4 cover locks by turning them a quarter-turn counterclockwise.
Lift the cover straight off.
3 Blow or vacuum away loose dust. Remove residues from lenses and filters
with a soft cloth or cotton swabs wetted with isopropyl alcohol. Regular glass
cleaner may also be used, but no residues may remain.
4 Rinse with distilled water. Mixing the water with a small amount of wetting
agent such as Kodak Photoflo will help prevent streaking and spotting.
5 Dry with a clean, soft and lint-free cloth or blow dry with compressed air.
6 Replace the top cover. To lock the 4 cover locks, turn them a half to a quarter
turn clockwise, until you feel them click.
Do not overtighten
.

CX-2 user manual Basic service 19
To clean the fan and air vents
To maintain adequate cooling, dust must be cleaned from the fan and air vents
periodically.
1 Remove the data and power cables and stand the fixture on end.
2 Remove dust and dirt from the fan blades and vent grills using a soft brush,
cotton swab, vacuum, or compressed air.
REPLACING FUSES
The CX-2 has 2 fuses. The main fuse holder is built in to the mains input socket.
The secondary fuse is located on the printed circuit board.
Warning! Never replace fuses with ones of a different rating!
To replace the main fuse
1 Unplug the mains cable from the input socket. Pry open the fuse holder and
remove the fuse.
2 Replace the fuse with one of the same type. The fuse rating is listed on serial
number label.
To replace the secondary fuse
1 Disconnect the fixture from AC power. Release the 4 cover locks by turning
them a quarter-turn counterclockwise. Lift the cover straight off.
2 The fuse is located right behind the data input connector. Pry out the
defective fuse and replace it with one of the same rating.
3 Replace the cover before applying power.

20 Troubleshooting CX-2 user manual
T
ROUBLESHOOTING
10
Problem Probable cause(s) Remedy
One or more of the fixtures is
completely dead. No power to fixture. Check that power is switched on and cables are plugged in.
Primary fuse blown. Replace fuse.
Secondary fuse blown. Replace fuse.
Fixtures reset correctly but all
respond erratically or not at all
to the controller.
The controller is not connected. Connect controller.
XLR pin-out of the controller
does not match pin-out of the
first fixture on the link (i.e.
signal is reversed).
Install a phase-reversing cable
between the controller and the
first fixture on the link.
Fixtures reset correctly but some
respond erratically or not at all
to the controller.
Bad data link connection Inspect connections and cables.
Correct poor connections.
Repair or replace damaged
cables.
Data link not terminated with
120Ω termination plug. Insert termination plug in output
jack of the last fixture on the
link.
Incorrect addressing of the
fixtures. Check DIP-switch settings.
One of the fixtures is
transmitting as a master or is
defective.
Bypass one fixture at a time
until normal operation is
regained: unplug both
connectors and connect them
directly together. Have the
defective fixture serviced by a
qualified technician.
An effect fails to reset correctly. The effect requires mechanical
adjustment. Contact Martin technician for service.
No light. Lamp missing or blown Disconnect fixture and replace
lamp.
Lamp cuts out intermittently or
burns out too quickly. Fixture is too hot. Allow fixture to cool.
The transformer setting does not
match local AC voltage. Check AC setting.