Show Tec Galactic TXT User manual

.
Galactic TXT
Highlite International B.V. –Vestastraat 2 –6468 EX –Kerkrade –the Netherlands
Product code: 51342
USER MANUAL
ENGLISH
V4

1
Galactic TXT
Product code: 51342
Preface
Thank you for purchasing this Showtec product.
The purpose of this user manual is to provide instructions for the correct and safe use of this product.
Keep the user manual for future reference as it is an integral part of the product. The user manual shall be
stored at an easily accessible location.
This user manual contains information concerning:
●Safety instructions
●Intended and non-intended use of the device
●Installation and operation of the device
●Maintenance procedures
●Troubleshooting
●Transport, storage and disposal of the device
Non-observance of the instructions in this user manual may result in serious injuries and damage of
property.
©2020 Showtec. All rights reserved.
No part of this document may be copied, published or otherwise reproduced without the prior written
consent of Highlite International.
Design and product specifications are subject to change without prior notice.
For the latest version of this document, please visit our website www.highlite.com or contact us at
[e-mail].
Highlite International and its authorized service providers are not liable for any injury, damage, direct or
indirect loss, consequential or economic loss or any other loss arising from the use of, or inability to use or
reliance on the information contained in this document.

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Galactic TXT
Product code: 51342
Table of contents
1. Introduction..........................................................................................................................................................4
Before Using the Product ..................................................................................................................................4
Intended Use .......................................................................................................................................................4
Product Lifespan.................................................................................................................................................4
Text Conventions ................................................................................................................................................4
Symbols and Signal Words................................................................................................................................5
Labels....................................................................................................................................................................5
2. Safety ....................................................................................................................................................................6
Warnings and Safety Instructions ....................................................................................................................6
Requirements for the User.................................................................................................................................8
Laser Safety .........................................................................................................................................................9
Safety Devices ....................................................................................................................................................9
Personal Protective Equipment .......................................................................................................................9
3. Description of the Device .................................................................................................................................10
Front View ..........................................................................................................................................................10
Back View ..........................................................................................................................................................11
Product Specifications ....................................................................................................................................12
Dimensions.........................................................................................................................................................13
4. Installation ..........................................................................................................................................................14
Safety Instructions for Installation ..................................................................................................................14
Personal Protective Equipment .....................................................................................................................15
Installation Site Requirements ........................................................................................................................15
Rigging ...............................................................................................................................................................15
Angle Adjustment.......................................................................................................................................16
Connecting to Power Supply.........................................................................................................................16
5. Setup ...................................................................................................................................................................17
Warnings and Precautions .............................................................................................................................17
Stand-alone Setup ...........................................................................................................................................17
DMX Connection..............................................................................................................................................17
DMX-512 Protocol .......................................................................................................................................17
DMX Cables .................................................................................................................................................18
Master/Slave Setup ....................................................................................................................................18
DMX Linking..................................................................................................................................................19
DMX Addressing..........................................................................................................................................19
Keyboard Connection ....................................................................................................................................19
6. Operation ...........................................................................................................................................................20
Safety Instructions for Operation...................................................................................................................20
Control Modes ..................................................................................................................................................20
Starting the Device ..........................................................................................................................................21
Menu Overview ................................................................................................................................................22
Main Menu Options .........................................................................................................................................23
Control Panel Operation ................................................................................................................................23
Show Mode..................................................................................................................................................23
Music Mode .................................................................................................................................................24
Text Mode ....................................................................................................................................................24
Time Mode ...................................................................................................................................................25
Time Format .........................................................................................................................................25
Time Settings........................................................................................................................................25
Countdown Mode......................................................................................................................................26
DMX Mode...................................................................................................................................................26
Slave Mode..................................................................................................................................................27
System Settings............................................................................................................................................27
Set Mirror ..............................................................................................................................................27

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Galactic TXT
Product code: 51342
Set Size..................................................................................................................................................28
Keyboard Operation .......................................................................................................................................28
Show Mode..................................................................................................................................................29
Music Mode .................................................................................................................................................29
Text Mode ....................................................................................................................................................30
Text Edit Mode ....................................................................................................................................30
Text Playback......................................................................................................................................31
Time Mode ...................................................................................................................................................32
Time Format .........................................................................................................................................33
Time Settings........................................................................................................................................33
Countdown Mode......................................................................................................................................33
DMX Mode...................................................................................................................................................34
Slave Mode..................................................................................................................................................34
System Settings............................................................................................................................................34
Set Mirror ..............................................................................................................................................35
Set Size..................................................................................................................................................35
Remote Control Operation ............................................................................................................................36
Show Mode..................................................................................................................................................36
Music Mode .................................................................................................................................................37
Time Mode ...................................................................................................................................................37
Countdown Mode......................................................................................................................................37
Text Mode ....................................................................................................................................................37
DMX Channels ..................................................................................................................................................38
Auto Mode...................................................................................................................................................38
Music Mode .................................................................................................................................................38
Text Mode ....................................................................................................................................................38
Pattern Mode ..............................................................................................................................................40
Pattern Selection Chart.....................................................................................................................42
7. Troubleshooting .................................................................................................................................................43
8. Maintenance .....................................................................................................................................................44
Safety Instructions for Maintenance.............................................................................................................44
Preventive Maintenance................................................................................................................................44
Basic Cleaning Instructions .......................................................................................................................44
Corrective Maintenance................................................................................................................................45
Replacing the Fuse.....................................................................................................................................45
9. Deinstallation, Transportation and Storage ....................................................................................................46
Instructions for Deinstallation..........................................................................................................................46
Instructions for Transportation ........................................................................................................................46
Storage...............................................................................................................................................................46
10. Disposal ..............................................................................................................................................................46
11. Approval.............................................................................................................................................................46

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Galactic TXT
Product code: 51342
1. Introduction
Before Using the Product
Important
Read and follow the instructions in this user manual before installing, operating or
servicing this product.
The manufacturer will not accept liability for any resulting damages caused by the non-observance of
this manual.
After unpacking, check the contents of the box. If any parts are missing or damaged, contact your
Highlite International dealer.
Your shipment includes:
●Showtec Galactic TXT
●Schuko to IEC (C13) power
cable –1,75 m
●Remote interlock test
connector
●2 keys for key switch
●Remote control
●Keyboard
●USB extender cable
●PS/2 to USB converter
●User manual
Fig. 01
Intended Use
This device is intended for professional use as a laser projector to produce laser displays or show effects. It
is suitable only for indoor installation. This device is not suitable for households.
Any other use, not mentioned under intended use, is regarded as non-intended and incorrect use.
Product Lifespan
This device is not designed for permanent operation. Disconnect the device from the electrical power
supply when the device is not in operation. This will reduce the wear and will improve the device’s
lifespan.
Text Conventions
Throughout the user manual the following text conventions are used:
●Buttons: All buttons are in bold lettering, for example “Press the UP/DOWN buttons”
●References: References to chapters and parts of the device are in bold lettering, for example:
“Refer to 2. Safety”, “turn the adjustment screw (02)”
●0–255: Defines a range of values
●Notes: Note: (in bold lettering) is followed by useful information or tips

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Galactic TXT
Product code: 51342
Symbols and Signal Words
Safety notes and warnings are indicated throughout the user manual by safety signs.
Always follow the instructions provided in this user manual.
DANGER
Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION
Indicates a potentially hazardous situation, which, if not avoided, may result in
minor or moderate injury.
Attention
Indicates important information for the correct operation and use of the
product.
Attention
Indicates that eye protection must be used.
Important
Read and observe the instructions in this document.
Electrical hazard
Laser beam hazard
Provides important information about the disposal of this product.
Labels
This device is a class 3B laser device and is provided with the following labels and hazard warnings. Refer
to Fig. 02 for the position of the labels.
1
CAUTION
Class 3B laser light when open
Avoid exposure to beam
2
Laser Light
Avoid exposure to beam
Class 3B laser product
3
Avoid exposure –laser
radiation is emitted from this
aperture
Fig. 02

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Galactic TXT
Product code: 51342
2. Safety
Important
Read and follow the instructions in this user manual before installing, operating or
servicing this product.
The manufacturer will not accept liability for any resulting damages caused by the non-observance of
this manual.
Warnings and Safety Instructions
DANGER
Danger for children
For adult use only. The device must be installed beyond the reach of children.
●Do not leave various parts of the packaging (plastic bags, polystyrene foam, nails, etc.) within
children’s reach. Packaging material is a potential source of danger for children.
DANGER
Electric shock caused by dangerous voltage inside
There are areas within the device where dangerous touch voltage may be present.
●Do not open the device or remove any covers.
●Do not operate the device if the covers or the housing is open. Before operation, check if the
housing is firmly closed and all screws are tightly fastened.
●Disconnect the device from electrical power supply before service and maintenance, and when the
device is not in use.
DANGER
Electric shock caused by short-circuit
This device falls under IEC protection class I.
●Make sure that the device is electrically connected to ground (earth). Connect the device only to a
socket-outlet with ground (earth) connection.
●Do not cover the ground (earth) connection.
●Do not bypass the thermostatic switch or fuses.
●For replacement use fuses of the same type and rating only.
●Do not let the power cable come into contact with other cables. Handle the power cable and all
connections with the mains with caution.
●Do not modify, bend, mechanically strain, put pressure on, pull or heat up the power cable.
●Make sure that the power cable is not crimped or damaged. Examine the power cable periodically
for any defects.
●Do not immerse the device in water or other liquids. Do not install the device in a location where
flooding may occur.
●Do not use the device during thunderstorms. Disconnect the device from the electrical power supply
immediately.

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Galactic TXT
Product code: 51342
WARNING
Laser radiation
Avoid exposure to beam.
This device is a class 3B laser device according to the classification in NEN-EN-IEC 60825-1:2014. It emits
visible radiation in the wavelength range 400–700 nm. Exposure to the direct or reflected laser beam,
including accidental short term exposure, is hazardous to the eye. Focused laser beam can cause minor
skin injuries.
Check all applicable national and international regulations concerning laser safety before using this
device. The user is responsible for the safety of all persons present during the use of the laser device.
●Do not look into the laser beam.
●Do not expose users of telescopic optics, such as binoculars, to this device.
●Do not open the device and do not modify the device.
●Do not use the device if the housing or the optics are damaged.
●Do not point the laser beam at people or animals.
●Make sure that the beam is terminated on a non-reflective and non-combustible surface.
●Do not point the laser beam at reflective surfaces such as windows, mirrors and shiny metal.
●Do not operate the device without supervision.
Attention
Risk of fire
If the beam is continuously pointed at one place from a close distance, the laser beam can burn
materials.
●Do not point the laser beam at materials susceptible to burning.
Attention
Power supply
●Before connecting the device to the power supply, make sure that the current, voltage and
frequency match the input voltage, current and frequency specified on the information label on the
device.
●Make sure that the cross-sectional area of the extension cords and power cables is sufficient for the
required power consumption of the device.
Attention
General safety
●Do not insert objects into the air vents.
●Do not connect the device to a dimmer pack.
●Do not switch the device on and off in short intervals. This decreases the device’s life.
●Do not shake the device. Avoid brute force when installing or operating the device.
●If the device is dropped or struck, disconnect the device from the electrical power supply
immediately.
●If the device is exposed to extreme temperature variations (e.g. after transportation), do not switch it
on immediately. Let the device reach room temperature before switching it on, otherwise it may be
damaged by the formed condensation.

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Galactic TXT
Product code: 51342
●If the device fails to work properly, discontinue the use immediately.
Attention
For professional use only
This device shall be used only for the purposes it is designed for.
This device is designed to be used as a professional laser projector. Any incorrect use may lead to
hazardous situations and result in injuries and material damage.
●This device is not suitable for households.
●This device is not designed for permanent operation.
●This device does not contain user-serviceable parts. Unauthorized modifications to the device will
render the warranty void. Such modifications may result in injuries and material damage.
Attention
Before each use, examine the device visually for any defects.
Make sure that:
●All screws used for installing the device or parts of the device are tightly fastened and are not
corroded.
●The safety devices are not damaged.
●There are no deformations on housings, fixations and installation points.
●The lens is not cracked or damaged.
●The power cables are not damaged and do not show any material fatigue.
Attention
Do not expose the device to conditions that exceed the rated IP class conditions.
This device is IP20 rated. IP (Ingress Protection) 20 class provides protection against solid objects greater
than 12 mm, such as fingers, and no protection against harmful ingress of water.
Requirements for the User
This product may be used only by instructed or skilled persons. Installation and maintenance can be
carried out by instructed or skilled persons. Service shall be carried out only by skilled persons. Contact
your Highlite International dealer for more information.
This product may not be used by ordinary persons. Users, operators and installers should have received
sufficient training in laser safety to be able to accurately assure that the maximum permissible exposure
(MPE) is not exceeded in spectator occupied areas and that the required separations are maintained
between spectators and projections that exceed the MPE.
Instructed persons have been instructed and trained by a skilled person, or are supervised by a skilled
person, for specific tasks and work activities associated with the operation, installation, service and
maintenance of this product, so that they can identify risks and take precautions to avoid them.
Skilled persons have training or experience, which enables them to recognize risks and to avoid hazards
associated with the operation, installation, service and maintenance of this product.
Ordinary persons are all persons other than instructed persons and skilled persons.

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Galactic TXT
Product code: 51342
Laser Safety
CAUTION
Use of controls or adjustments, or performance of procedures, other than those specified
in this manual, may result in hazardous radiation exposure.
Check all applicable national and international regulations concerning laser safety before using this
device. In some countries, there may be specific requirements, such as government permissions or
notifications of shows, or prohibitions, such as against laser scanning of spectators without appropriate
safeguards.
Laser displays and shows, where class 3B and/or class 4 lasers are used, should be supervised by a laser
safety officer (LSO). LSOs are trained to evaluate and control laser hazards and are responsible for
overseeing the control of laser hazards. An LSO is recommended but not required for laser displays and
shows, where only class 1, 1M, 2, 2M and/or 3R lasers are used.
During laser displays and shows the applicable eye and skin maximum permissible exposure (MPE) may
not be exceeded. Under no circumstance should any person be exposed to laser radiation exceeding
the applicable eye and skin MPE. MPE for spectators, ancillary personnel and performers is specified in
IEC 60825-14, IEC 60825-3, and in the applicable local laser regulations.
Each time before operation of the device, make sure that:
●The beam is aligned and properly terminated
●All controls, including scan failure safeguards and emergency stop controls, are properly working
●Warning signs and barriers are in place as appropriate
●All components are securely mounted and locked into position
The device should be secured and protected against misalignment or maladjustment between
alignment completion and the beginning of the laser display or show.
Safety Devices
This device is equipped with a key switch and a remote interlock connector. The key switch prevents that
unauthorized and untrained persons can operate the device. If the key is removed, you cannot operate
the device.
The remote interlock connector permits the connection of a remote interlock (not supplied). When you
press the remote interlock, the laser radiation is terminated immediately. We recommend that you
purchase a remote interlock. Check the local regulations, as in some countries it is not allowed to
operate the device without a remote interlock.
For testing and programming purposes you may use the supplied test connector. If the test connector is
not inserted into the remote interlock connector, you cannot operate the device.
Personal Protective Equipment
Attention
Use laser protective eyewear during alignment and setup.
Wearing of laser protective eyewear is recommended for Class 3B lasers. Make sure you follow any
applicable national and site-specific regulations.
During alignment and setup use protective eyewear that complies with the requirements of EN 208. In all
other cases laser protective eyewear must be in compliance with EN 207.

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Galactic TXT
Product code: 51342
3. Description of the Device
The Showtec Galactic TXT is a text laser projector, which makes it possible to write your own text. It is
delivered with a separate keyboard and a remote control.
Front View
Fig. 03
01) Laser beam aperture
02) Infrared sensor
Sound sensitivity control
Built-in microphone
Mounting bracket
2 adjustment screws
Sound control LED indicator
Power LED indicator

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Galactic TXT
Product code: 51342
Back View
Fig. 04
Control panel: 4-digit LED display, control buttons and LED indicators
Safety eye
Cooling fan
IEC (C14) power connector IN, 100–240 V
Fuse T1,6 A, 250 V
Ground (earth) connection
Power switch ON/OFF
PS/2 connector for keyboard
3-pin DMX connector IN
3-pin DMX connector OUT
Remote interlock connector
Key switch

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Galactic TXT
Product code: 51342
Product Specifications
Model:
Galactic TXT
Electrical:
Input voltage:
100–240 V AC, 50/60 Hz
Power consumption:
15 W
Fuse:
T1,6 A, 250 V
Physical:
Dimensions:
225 x 190 x 185 mm (L x W x H) (with bracket)
Weight:
2 kg (without accessories)
Laser:
Laser class:
3B
Laser power:
650 nm = 110 mW (red)
530 nm = 40 mW (green)
450 nm = 80 mW (blue)
Laser modulation:
TTL
Beam diameter at aperture:
4 mm
Beam divergence:
1,8 mrad
NOHD:
92 m (P total output power all beams = 230 mW)
MPE:
25 W∙m-2 for exposure duration of 0,25 s
Scanning system:
Scanner speed:
10K
Scan angle:
± 30°
Operation and control:
Control:
Stand-alone (auto, manual, sound-controlled)
Master/Slave (auto, manual, sound-controlled)
DMX-512
DMX channels:
20 channels
Control panel:
4-digit LED display, control buttons and LED indicators
Connections:
Power connections:
IEC (C14) power connector IN, 100–240 V
Data connections:
3-pin DMX connectors IN/OUT
Signal pinouts:
pin 1 (ground), pin 2 (-), pin 3 (+)
Construction:
Housing:
Metal and flame-retardant plastic
Color:
Black
IP rating:
IP20
Cooling:
Cooling fan
Thermal:
Maximum ambient temperature ta:
40 °C
Minimum ambient temperature:
10 °C
Maximum housing temperature tc:
50 °C

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Galactic TXT
Product code: 51342
Dimensions
Fig. 05
Fig. 06

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Galactic TXT
Product code: 51342
4. Installation
Safety Instructions for Installation
WARNING
Incorrect installation can cause serious injuries and damage of property.
If trussing systems are used, installation must be carried out only by instructed or skilled persons.
●Make sure that the device is rigidly mounted to prevent movement due to vibration or jarring.
●Follow all applicable European, national and local safety regulations concerning rigging and
trussing.
The device should be installed in such a way that there is at least 3 m distance in height and 2,5 m
laterally between the laser beam that exceeds the spectator MPE and the surface where spectators are
expected to stand.
Fig. 07
If the laser display or show is not under the continuous control of an operator who can immediately
terminate laser radiation in the event of a problem, the MPE shall not exceed 5 times the spectator MPE
in the space between 3 m and 6 m above the surface where spectators are expected to stand.
Fig. 08

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Galactic TXT
Product code: 51342
Personal Protective Equipment
During installation and rigging wear personal protective equipment in compliance with the national and
site-specific regulations.
Installation Site Requirements
●The device can be used only indoors.
●The minimum distance to other objects must be bigger than 0,5 m.
●The maximum ambient temperature ta= 40 °C must never be exceeded.
●The relative humidity must not exceed 50 % with an ambient temperature of 40 °C.
Rigging
The device can be positioned on a flat surface or mounted to a truss or other rigging structure. Make sure
that all loads are within the pre-determined limits of the supporting structure.
CAUTION
Restrict the access under the work area during rigging and/or derigging.
To mount the device, follow the steps below:
Use a clamp to attach the device to the supporting structure, as shown in Fig. 09. Make sure that the
device cannot move freely.
Secure the device with a secondary suspension, for example a safety cable. Make sure that the
secondary suspension can hold 10 times the weight of the device. If possible, the secondary
suspension should be attached to a supporting structure independent of the primary suspension. Put
the safety cable through the safety eye (10), as shown in Fig. 09.
Fig. 09

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Galactic TXT
Product code: 51342
Angle Adjustment
You can adjust the angle of the device with the adjustment screws (06).
01) Turn the adjustment screws (06) counterclockwise to release them.
Tilt the device at the desired angle (see Fig. 10).
Turn the adjustment screws (06) clockwise to tighten them. Make sure that the device cannot move
freely after the adjustment screws (06) are tightened.
Fig. 10
Connecting to Power Supply
DANGER
Electric shock caused by short-circuit
The device accepts AC mains power at 100–240 V and 50/60 Hz. Do not supply power at any other
voltage or frequency to the device.
This device falls under IEC protection class I. Make sure that the device is always electrically connected
to the ground (earth).
Before connecting the device to the socket-outlet:
●Make sure that the power supply matches the input voltage specified on the information label on
the device.
●Make sure that the socket-outlet has ground (earth) connection.
Connect the device to the socket-outlet with the power plug. Do not connect the device to a dimmer
circuit, as this may damage the device.

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Galactic TXT
Product code: 51342
5. Setup
Warnings and Precautions
WARNING
Laser radiation
Avoid exposure to beam.
Attention
Use laser protective eyewear during alignment and setup.
During alignment and setup the access of unauthorized persons to the area, where the laser radiation
exceeds the spectator MPE, must be restricted. The temporary laser controlled area must be marked
accordingly.
Follow all applicable national and site-specific regulations regarding laser safety.
Stand-alone Setup
When the Galactic TXT is not connected to a controller or to other devices, it functions as a stand-alone
device. It can be operated manually with the control panel, the keyboard, or the remote control.
DMX Connection
DMX-512 Protocol
You need a DMX serial data link to run light shows of one or more devices using a DMX-512 controller or
to run synchronized shows of two or more devices set in a master/slave operating mode.
The Galactic TXT has 3-pin DMX signal IN and OUT connectors.
The pin assignment is as follows:
●3-pin: pin 1 (ground), pin 2 (-), pin 3 (+)
Devices on a serial data link must be daisy-chained in a single line. The number of devices that you can
control on one data link is limited by the combined number of the DMX channels of the connected
devices and the 512 channels available in one DMX universe.
To comply with the TIA-485 standard, no more than 32 devices should be connected on one data link.
In order to connect more than 32 devices on one data link, you must use a DMX optically isolated
splitter/booster, otherwise this may result in deterioration of the DMX signal.
Note:
●Maximum recommended DMX data link distance: 300 m
●Maximum recommended number of devices on a DMX data link: 32 devices
Attention
Connect all data cables before supplying power.
Disconnect power supply before connecting or disconnecting data cables.

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Galactic TXT
Product code: 51342
DMX Cables
Shielded twisted-pair cables with 3-pin/5-pin XLR connectors must be used for reliable DMX connection.
You can purchase DMX cables directly from your Highlite International dealer or make your own cables.
If you use XLR audio cables for DMX data transmission, this may lead to signal degradation and unreliable
operation of the DMX network.
When you make your own DMX cables, make sure that you connect the pins and wires correctly as
shown in Fig. 11.
Fig. 11
Master/Slave Setup
The Galactic TXT supports master/slave control mode. To connect multiple devices in a master/slave
setup, follow the steps below:
Connect the first device’s DMX OUT connector to the second device’s DMX IN connector with a
3-pin DMX cable.
Repeat step 1 to connect all devices as shown in Fig. 12.
Connect a DMX terminator (120 Ω resistor) to the DMX OUT connector of the last device in the setup.
Set the first device on the data link as a master device. See 6.6.8. System Settings on page 27 for
more information.
Set the remaining devices as slave devices. See 6.6.7. Slave Mode on page 27 for more information.
Fig. 12

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Galactic TXT
Product code: 51342
DMX Linking
To connect multiple devices on one DMX data link, follow the steps below:
Use a 3-pin DMX cable to connect the DMX OUT connector of the lighting controller to the DMX IN
connector of the first device.
Connect the first device’s DMX OUT connector to the second device’s DMX IN connector with a
3-pin DMX cable.
Repeat step 2 to connect all devices in a daisy-chain as shown in Fig. 13.
Connect a DMX terminator (120 Ω resistor) to the DMX OUT connector of the last device on the data
link.
Fig. 13
DMX Addressing
In a setup with multiple devices, make sure that you set the DMX starting address of each device
correctly. The Galactic TXT has 1 personality with 20 channels.
If you want to connect multiple devices on one data link, follow the steps below:
Set the starting address of the 1st device on the data link to 1 (001).
Set the starting address of the 2nd device on the data link to 21 (021), as 1 + 20 = 21.
Set the starting address of the 3rd device on the data link to 41 (041), as 21 + 20 = 41.
Continue assigning the starting addresses of the remaining devices by adding each time 20 to the
previous number.
Make sure that you do not have any overlapping channels in order to control each Galactic TXT
correctly. If two or more devices are addressed similarly, they will work similarly.
Keyboard Connection
To connect the keyboard to the device:
Insert the supplied PS/2 to USB converter into the PS/2 connector for keyboard (16) on the device.
Connect the USB cable of the keyboard to the USB port of the PS/2 to USB converter. You can use
the USB extender cable, if necessary.