Shure DDS 5900 User manual

© 2015 Shure Incorporated
27A20456 (Rev. 2)
Discussion and Conferencing
DDS 5900 Digital Discussion System
USER GUIDE

Table of Contents
2
Table of Contents
Table of Contents 2
Important 3
Important Safeguards 3
Compliance 5
Cleaning 5
Repacking 5
Warranty 5
DDS 5900 Digital Discussion System 6
Features 6
System Concepts 7
Component Overview 8
Central Unit 9
Discussion Units 12
Gooseneck Microphones 17
Additional Compatible Equipment 18
Installation 19
Rackmounting the CU 19
Cable Requirements 19
Connecting Microphone Units 20
Connection Diagrams 21
Power Requirements 25
Installing Large Systems 27
Installing the DC 5900 F 29
Using the Discussion Units 31
Attach the Touch-Button Overlay 31
Securing the Microphone 31
Program the User Type 31
Controlling the Discussion Unit 33
Monitoring 34
System Set Up 36
Control Software 36
Security 40
Audio Settings 41
Running a Discussion 43
Language Interpretation 43
Assigning Names and Seat Numbers 44
Maximum Speaker Setting 45
Microphone Operation Modes 46
Voice Detection 47
Managing Speakers from the Web Browser 48
Troubleshooting 49
Factory Default Reset 50
Diagnostic Report 50
Firmware Update 51
External Control Protocol 52
General Protocol Behavior 52
Microphone Control 54
Audio Control 56
Technical Specifications 58
System Specifications 58
System Performance 59
DC 5980 P 60
DC 5900 F 60
Gooseneck Microphones 61
Connection Details 62
How To Order 63
FP 5921 F 63
FP 5981 F 63
Microphones 63
Connection Cables for DCS-LAN 63
Advanced Setup 64
Storage 64
Spare Parts 64

Important
3
Important
Important Safeguards
1. Read these instructions - All the safety and operating
instructions should be read before the apparatus or
system is operated.
2. Keep these instructions - The important safety
instructions and operating instructions should be
retained for future reference.
3. Follow all warnings - All warnings on the apparatus
and in the operating instructions should be adhered to.
4. Follow all instructions - All instructions for installation
or use/operating should be followed.
5. Do not use this apparatus near water - Do not use
this apparatus in a water or moistures environment - for
example, near a bath tub, wash bowl, kitchen sink, or
laundry tub, in a wet basement, near a swimming pool,
in an unprotected outdoor installation, or any area which
is classified as a wet location.
6. Warning: To reduce the risk of fire or electric shock,
do not expose this apparatus to rain or moisture and
no objects filled with liquids, such as vases, should
be placed on this apparatus.
7. Clean only with dry cloth - Unplug the apparatus from
the outlet before cleaning. Do not use liquid cleaners or
aerosol cleaners.
8. Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions
- Openings in the enclosure, if any, are provided
for ventilation and to ensure reliable operation of
the apparatus and to protect it from overheating.
These openings must not be blocked or covered.
This apparatus should not be placed in a built-in
installation unless proper ventilation is provided or the
manufacturer’s instructions have been adhered to.
9. Do not install near any heat sources such as
radiators, heat registers, stoves, air ducts, or other
apparatus (including amplifiers) that produce heat.
10. Do not install the unit in a place exposed to direct
sunlight, excessive dust or humidity, mechanical
vibration or shock .
11. To avoid moisture condensations do not install the
unit where the temperature may rise rapidly.
12. Do not defeat the safety purpose of the polarized or
ground-type plug. A polarized plug has two blades with
one wider than the other. A grounding type plug has two
blades and a third grounding prong. The wider blade or
the third prong is provided for your safety. If the provided
plug does not fit into your outlet, consult an electrician
for replacement of the obsolete outlet.
13. Protect the power cord from being walked on
or pinched particularly at plug, convenience
receptacles, and the point where they exit from the
apparatus.
14. Only use attachments/accessories specified by the
manufacturer . Any mounting of the apparatus should
follow the manufacturer’s instructions, and should use a
mounting accessory recommended by the manufacturer.
15. Use only with the cart, stand, tripod, bracket or
table specified by the manufacturer, or sold with the
apparatus.
When a cart is used, use caution when moving
the cart/apparatus combination to avoid injury
from tip-over - Quick stops, excessive force,
and uneven surfaces may cause the appliance
and cart combination to overturn.
16. Unplug this apparatus during lighting storms
or when unused for long periods of time . – Not
applicable when special functions are to be maintained,
such as evacuation systems.
17. Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate
normally, or has been dropped.
18. Replacement Parts - When replacement parts are
required, be sure the service technician has used
replacement parts specified by the manufacturer or
having the same characteristics as the original part.
Unauthorized substitutions may result in fire, electric
shock or other hazards.
19. Safety Check - Upon completion of any service or
repairs to this apparatus, ask the service technician to
perform safety checks to determine that the apparatus is
in proper operating condition.

Important
4
20. Overloading - Do not overload outlets and extension
cords as this can result in a risk of fire or electric shock.
21. Power Sources - This apparatus should be operated
only from the type of power source indicated on the
marking label. If you are not sure of the type of power
supply you plan to use, consult your appliance dealer
or local power company. For apparatuses intended to
operate from battery power, or other sources, refer to the
operating instructions.
22. Power Lines - An outdoor system should not be
located in the vicinity of overhead power lines or other
electric light or power circuits, or where it can fall into
such power lines or circuits. When installing an outdoor
system, extreme care should be taken to keep from
touching such power lines or circuits, as contact with
them might be fatal.
23. Object and Liquid Entry - Never push objects of any
kind into this apparatus through openings as they may
touch dangerous voltage points or short-out parts that
could result in a fire or electric shock.
Never spill liquid of any kind on the apparatus. Should
any liquid or solid object fall into the cabinet, unplug the
unit and have it checked by qualified personnel before
operating it further.
Labels
“Lightning Flash Symbol” with the lightning flash
with arrowhead symbol within an equilateral
triangle, is intended to alert the user to the
presence of un-insulated "dangerous voltage"
within the product enclosure that may be of
sufficient magnitude to constitute a risk of
shock to persons.
“Exclamation Point Symbol” with the
exclamation point within an equilateral triangle
is intended to alert the user to the presence
of important operating and maintenance
(servicing) instructions in the literature
accompanying the product.
Note for Power Connections
Check that the voltage of your local power supply is within
the operating voltage of the unit. If a voltage conversion is
required, consult your DIS dealer or qualified personnel.
Set the Power switch to ‘Off’ if it is not used for several
days.
Important: The equipment must be connected to
earth (ground)
The wires in the main lead supplied with the equipment are
colored in accordance with the following codes:
• Green-and-yellow Earth (Ground)
• Blue Neutral
• Brown Live
• The green-and-yellow wire must be connected to the
terminal in the plug marked with the letter E or with the
safety earth symbol or marked with green-and-yellow
color.
• The blue wire must be connected to the terminal marked
with the letter N or marked with black color.
• The brown wire must be connected to the terminal
marked with the letter L or marked with red color.
• For pluggable equipment, the socket-outlet shall
be installed near the equipment and shall be easily
accessible.
Power Disconnect
Apparatuses with or without On/Off switches have power
supplied to the apparatus whenever the power cord is
inserted into the power source; however, the apparatus
is operational only when the On/Off switch is in the On
position. The power cord is the main power disconnect for
all apparatuses.

Important
5
Compliance
The equipment is intended to be used in professional audio
applications.
Note: This device is not intended to be connected
directly to a public internet network.
EMC conformance to Environment E2: Commercial and
Light Industrial. Testing is based on the use of supplied and
recommended cable types. The use of other than shielded
(screened) cable types may degrade EMC performance.
Changes or modifications not expressly approved by Shure
Incorporated could void your authority to operate this
equipment.
This Class B digital apparatus complies with Canadian
ICES-003. Cet appareil numérique de la classe B est
conforme à la norme NMB-003 du Canada.
Authorized under the verification provision of FCC Part
15B.
Please follow your regional recycling scheme for batteries,
packaging, and electronic waste.
Information to the user
This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to Part 15
of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates uses and
can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause
harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the
receiver.
• Connect the equipment to an outlet on a circuit different
from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician
for help.
Cleaning
To keep the cabinet in original condition, periodically wipe
it down with a soft cloth. Stubborn stains may be removed
with a cloth lightly dampened with a mild detergent solution.
Never use organic solvents such as thinners or abrasive
cleaners since these will damage the cabinet.
Repacking
Save the original shipping box and packing material; they
may be used to ship the unit. For maximum protection, re-
pack the unit as originally packed from the factory.
Warranty
The units are covered by a 24 month warranty against
defects in materials or workmanship.

DDS 5900 Digital Discussion System
6
DDS 5900 Digital Discussion System
The DDS 5900 Digital Discussion System is a conferencing solution with plug-and-play setup and online discussion
management. With excellent audio quality and programmable touch-button controls, compact microphone units facilitate
clear communication in large groups and meeting spaces. The system manages up to eight talkers at a time and
dedicates two channels for interpretation, supporting bilingual events without additional equipment.
The DDS 5900 Digital Discussion System is comprised of one central unit, the control browser, and up to 250 discussion
units. Supporting multiple user types, a gooseneck microphone, loudspeaker, and control buttons are combined in a
compact discussion unit. With highly flexible layout options and a choice of tabletop or flushmount units, the system
seamlessly integrates into a wide range of professional environments, such as:
• Corporate meeting rooms
• City councils and regional government bodies
• Educational institutions
• Courtrooms
• Videoconferencing rooms
Features
Clear, Natural Communication
DDS 5900 discussion units enhance group communication, allowing natural conversation to be heard in large meeting
spaces. Gooseneck microphones provide excellent speech isolation, while the LED light ring indicates who is talking. A
24-bit digital audio signal is transported to each discussion unit for real-time monitoring from the loudspeaker. Several
microphone operation modes provide manual and automatic microphone activations.
Sleek, Professional Design
Modern, low-profile design integrates into a variety of spaces, from historic buildings to contemporary boardrooms.
DDS 5900 discussion units are intuitive and functional, reducing clutter and increasing tabletop workspace. Two model
variations are available to support the needs of any event:
• Compact flushmount unit for permanent installation
• Portable unit for quick setup and easy removal
Flexible Setup and Easy Installation
The DDS 5900 system uses a proprietary protocol to transport digital audio, control data, and power over the same cable
(shielded Cat5e). The system supports large events of up to 250 participants, easily scaling with additional components
added inline for a simplified layout topology.
Remote Management
For comprehensive system management, open the browser-based control app using a computer or tablet. The interface
adds system configuration and discussion setup capabilities, enabling an administrator to prepare the discussion with
participant names and seat numbers. The chairman or moderator uses a dedicated page for speaker management during
the discussion.
The system is also compatible with Crestron, AMX, and other control systems. The CU easily interconnects with
teleconferencing equipment and external audio components.

DDS 5900 Digital Discussion System
7
System Concepts
The DDS 5900 Discussion system is an important communication tool for meetings of any size. Participants use the
discussion unit microphone and loudspeaker to communicate using natural speech levels.
The Discussion Unit: A Personal Sound System
The DDS 5900 Discussion Systems improves communication amongst a group of people by combining the microphone,
loudspeaker, interpretation audio, and user controls in an integrated unit. When a participant speaks, their voice is heard
at the other units' loudspeakers. The DDS 5900 is a perfect solution when every participant is both a talker and a listener.
In contrast, traditional sound systems support the communication of one or two speakers to a crowd of people. In those
systems, it is impossible to have the dialog required in a discussion setting.
Discussion Participants and Roles
The DDS 5900 discussion unit is programmable to support different functions required by different people involved in the
discussion. For example, as the moderator of the discussion, the chairman has an extra control that immediately turns off
all delegate microphones. In a typical event, there are three categories of participants:
The following is an overview of each participant role and how they function in a typical discussion.
Delegate (member, participant)
The majority of participants fall into this category. The delegate role is for anyone involved in the discussion that is not
a chairman or interpreter. Delegates use the discussion unit to speak and listen to other participants. Depending on the
discussion settings, the delegate may send a request to speak before the microphone is activated by the Chair.
• Up to 250 delegates can participate in a meeting.
Chairman (chair, moderator, president)
The chairman, or simply the Chair, is the moderator of the discussion. Typically seated at the head of the meeting space,
the Chair has the ultimate authority over who is speaking. Using the browser interface, the moderator has ability to turn
microphones on or off for specific participants, and view the order in which participants request to speak. Providing
immediate control of the discussion, an 'all-delegate off' button is available on discussion units programmed to chairman
mode.
• There is typically only one Chair for each event, though more can be added.
Interpreter
When an additional language is spoken in a discussion, an interpreter provides simultaneous interpretation using the
discussion unit. Interpreters select from one of two channels to transmit to other participants speaking the same language.
This system supports bilingual, two-way discussion, facilitating the back-and-forth communication between delegates
speaking two different languages.
• The system supports simultaneous interpretation for two languages

Component Overview
8
Component Overview
① Central Unit
② Discussion Units
③ Control Interface
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The DDS 5900 Discussion System consists of the following components:
① CU 5905 Central Unit
The central unit (CU) is the processor for the DDS 5900 system. It provides power and control to the discussion units,
analog audio inputs and outputs for external equipment, and a webserver that hosts the browser interface for remote
system control. Each system uses a single CU.
② Discussion Units
Participants use the discussion units (DU) to speak and listen to other members of the event. A microphone, loudspeaker,
and channel selector are provided for each unit. Units connect in series, simplifying setup by transporting power, audio,
and control data on the same cable. There are two models of discussion units:
■DC 5980 P Portable Discussion Unit
All-in-one unit that sits on the table surface. It is configurable as chairman, delegate, or interpreter.
■DC 5900 F Flushmount Discussion Unit
The flushmount discussion unit installs unobtrusively into a table or podium. The modular unit adds functionality depending on the
components. It is configurable as chairman or delegate.
③ Browser Interface
The browser interface provides comprehensive setup and discussion management for the DDS 5900 system. It opens in a
web browser from a computer networked with the CU. Use the interface to manage microphones, assign names and seat
numbers to delegates, and advanced system configuration.

Component Overview
9
Central Unit
The CU 5905 Central Unit provides the intelligence for systems of up to 250 discussion units. It processes audio and
control signals from each discussion and interpreter unit, and distributes audio to other participants for listening to the
discussion.
CU 5905 has the following features:
• Controls a system of up to 250 discussion units
• Transports secure audio signal with a proprietary codec algorithm
• Provides a web server for advanced control through a browser interface
• Supplies power for up to 60 discussion units
• Supports two (2) interpretation channels for bilingual discussions
• Provides four (4) audio outputs to send interpretation or group channels to PA systems, audio mixers, audio recorders,
or a language distribution system
• Provides one (1) audio input for connecting wireless microphones, processed audio signals, an emergency broadcast
message, or music during meeting breaks
• Provides one (1) audio input for Emergency Evacuation Message (EEM) that overrides all audio in the event of an
emergency
• One rack unit (1RU) size installs into a standard 19" rack
on
ULXD2
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Audio Input
Audio Outputs
Remote Control
Control of 250 discussion units
System Hub
The CU connects external equipment to the DDS 5900 system

Component Overview
10
CU Interface Description
Front
Back
CU 5905 Central Unit
Front Panel
① Menu display
A 2x20 character OLED-display enables system
configuration without a computer.
② Navigation Buttons
5-button keypad for configuring the system without a
computer.
③ Power Button
The power button turns on or off the central unit. All
connected discussion units and power supplies will
automatically power on or off with the CU.
• Green = powered on
• Red = powered off but connected to power supply
• Off = no power supply is connected to the CU
Note: System settings are stored and persist through a power cycle.
Back Panel
④ Power Supply Connector
Threaded connector secures to the PS CU power supply.
⑤ Chain outputs
Two RJ45 jacks are available for connecting the discussion
units, forming the DCS-LAN. The DCS-LAN chain safely
carries digital audio, control data, and power over the same
cable. The CU operates a single mix from the two separate
discussion unit chains, enabling more flexible installations
and system connections.
Important: Only connect DDS 5900 discussion units to this output.
⑥ Control Connector (LAN)
The RJ45 connector allows access to the built-in web
application from a computer, or for connection to a control
system like AMX®or Crestron®.
⑦ Audio Outputs
Four balanced, male XLR connectors for connection to
PA systems, audio mixers, audio recorders, or a language
distribution system.
⑧ Audio Input
One balanced, female XLR connector for adding external
audio equipment to the DDS 5900 system, such as a
wireless microphone, a teleconferencing system, or
processed audio signals. Input gain and volume are adjust
from the CU front-panel or web application.
⑨ Emergency Audio Input and Switch Connector
One balanced, male XLR connector for the input of an
emergency evacuation message (EEM). A terminal block
connects a normally open switch. When the switch is
closed, the audio signal on the 'In 2' connector is distributed
to all output channels, overriding all other audio inputs.
Note: There is no volume control available for setting the volume on 'In 2'. The
volume has to be set at the equipment generating the "Emergency Evacuation
Message (EEM)" audio signal.

Component Overview
11
Simplified Audio Diagram
DDS 5900 Central Unit Audio Diagram
Menu Navigation
The CU 5905 provides controls from the front panel for
system setup and configuration. Use the 5-button keypad to
navigate the menu and change settings.
The figure below gives an overview of the menu structure.
• Use arrow buttons to cycle through menu items
• Press enter (center) button to navigate to an editable
field.
• Use up/down buttons to cycle through the available
values
• Press enter (center) button to save changes
Loudspk. control
Max speakers
Max requests
Voice detection
Loudspk. volume 0 to -40 dB, Off
Mic -> loudspk. On/Off
Audio out A volume 6 to -40 dB, Off
Auto off time 5 to 60 sec
Auto off On/Off
Delegate Interrupt On/Off
On/Off
Operation mode Auto, Manual, FIFO, Vox
1 to 10 secRelease time
8 to -12 dBThreshold
1 to 8Max total speakers
1 to 8Max deleg speakers
IP address setup
Dynamic/Static
Acquire IP addr
Actual subnet maskSubnet mask
Actual gatewayDefault gateway
Actual IP addressIP address
Delegate setup
LAN setup
OK/CancelRestore Factory Defaults
Main Menu
Menu path
Settings
Menu Overview

Component Overview
12
Discussion Units
Participants use discussion units to communicate with other members of the event. Connected in daisy-chain
configuration from the central unit, they transport digital audio, control signals, and power over a single cable. The sleek,
professional design and minimal cabling allows seamless integration into professional meeting spaces. A DDS 5900
system supports up to 250 discussion units at the same time.
DDS 5900 Discussion Units
Primary functions of the unit:
① Microphone: for speech
② Speaker: for listening to the discussion
③ Control Buttons: for microphone operation and interpretation channel selection
④ Headphone Jack: for listening to an interpretation channel or the floor audio
⑤ Base with RJ-45 Jacks: for power, audio, control transport
DC 5980 P
DC 5900 F

Component Overview
13
Model Variations
DC 5980 P Portable Discussion Unit
Sits on the tabletop without drilling or cutting the surface,
and easily dismantles for system reconfiguration. Features
include an integrated speaker, rear-exit cable routing, and
operation as an chairman, delegate, or interpreter unit.
Integrated Design
The following features are integrated in the unit
Interpretation Monitoring
Listen to an interpretation channel using the channel
selector and headphone output.
Sound Reinforcement
Loudspeaker for listening to other talkers.
Microphone Variations
Compatible with all DIS microphones.
DC 5900 F Flush-Mounted Discussion Unit
Installs permanently into a table or podium. A low-profile
design conceals the base and cabling below the tabletop
surface. This unit can operate as a chairman or delegate.
Modular Design
Functionality is scalable by adding or subtracting parts.
Interpretation Monitoring
Two front plate variations are available:
• FP 5981 F: interpretation monitoring is supported with a
headphone jack and channel selector
• FP 5921 F: not supported
Sound Reinforcement
Add the optional LS 5900 F loudspeaker for listening to
other talkers.
Microphone Variations
In addition to DIS microphones, several Shure MicroflexⓇ
Gooseneck microphones are compatible with the
flushmount unit by connecting the AC 5901 adapter.
DC 5980 P Portable Discussion Unit
DC 5900 F
LS 5900 F
FP 5981 F
AC 5901
MX405RLP
Loudspeaker
Base Unit
Front Plate
Shure Microflex Microphone Adapter
Gooseneck Microphone
DC 5900 F Discussion Unit

Component Overview
14
Control Buttons
The discussion unit is programmable to support different people involved in the discussion. For example, as the moderator
of the discussion, the chairman has an extra control that immediately turns off all delegate microphones.
1
2
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DC 5900 F DC 5980 P
Chairman (Moderator)
Delegate (Participant)
Interpreter
Using the Controls
Icon Name Description
Speech Press to turn on the microphone or add the user to the
request list, depending on the system operation mode set in
the CU.
Mute Press and hold to temporarily mute the audio from the
microphone. During this time, the delegate will retain
speaking privileges but the microphone will not pass audio to
the floor sound. The microphone light ring is off during mute.
Delegate Off The chairman uses this button to immediately turn off all
delegate microphones.
Interpreter
Output Channel
Selects the transmitting (outbound) channel of the interpreter
station.
Note: Only available for the DC 5980 P portable unit.
Interpretation
Monitoring
Scroll through the channels to select an audio source for
monitoring on headphones. Channels 1 and 2 select a
language interpretation source; floor sound is selected when
the LEDs are off.
Headphone
Volume
Increase or decrease the volume of the headphone audio
signal.

Component Overview
15
Overlay Variations
DC 5980 P Portable Unit
▪Delegates
Buttons Image
•speech
•mute
•Interpretation
monitoring
•headphone volume
•speech
•Interpretation
monitoring
•headphone volume
▪Chairman
Buttons Model
•speech
•delegate off
•Interpretation
monitoring
•headphone volume
▪Interpreter
Buttons Model
•speech
•mute
•interpreter channel
send
•headphone volume

Component Overview
16
DC 5900 F Flushmount Unit
The DC 5900 F flushmount unit has two options for the front plate:
▪FP 5981 F Front Plate (with interpretation monitoring)
Delegates
Buttons Image
•speech
•mute
•interpretation
monitoring
•headphone volume
•speech
•interpretation
monitoring
•headphone volume
Chairman
Buttons Model
•speech
•delegate off
•interpretation
monitoring
•headphone volume
▪FP 5921 F Front Plate (without interpretation monitoring)
Delegates
Buttons Image
•speech
•mute
•speech
•No buttons
Chairman
Buttons Model
•speech
•delegate off

Component Overview
17
Gooseneck Microphones
GM 592x Series
The DIS GM 592x microphone delivers excellent audio
performance with a frequency response specifically
tailored for speech. The gooseneck is on the base of the
microphone, providing flexible positioning. A red LED ring
at the top of the microphone clearly indicates when the
microphone is active and the participant is speaking.
Two models are available:
• GM 5923: 40 cm (16 in.)
• GM 5924: 50 cm (20 in.)
DIS GM 592x
MX 400 Gooseneck for Flushmount Units
The DC 5900 F Flushmount discussion unit functions
with Shure MX 400 RLP series microphones. Featuring
legendary Shure audio performance and build quality,
CommShield®Technology eliminates noise caused by
smart phones, tablets, WiFi and other RFI. A red LED ring
at the top of the microphone clearly indicates when the
microphone is active and the participant is speaking.
Simply screw the AC 5901 XLR adapter to the bottom of
the microphone, and insert it into discussion unit.
• MX 405 RLP: 15 cm (6 in.)
• MX 410 RLP: 25 cm (10 in.)
• MX 415 RLP: 38 cm (15 in.)
Shure MX 4xx RLP
AC 5901 XLR/ Adapter

Component Overview
18
Additional Compatible Equipment
The following units are available to use in the DDS 5900
system:
Additional Power and Advanced Setup
EX 6010 Extension Unit
Extension unit provides four chain outputs, each with
independent power supplies and data refreshing
capabilities.
RP 6004 Repeater/Splitter
Refreshes data signal for long cable runs and provides four
additional outputs for discussion unit chains.
PS 6001 Power Kit
Provides power for up to 40 discussion units. Includes PI
6000 Power Inserter and PS CU power supply.
JB 6104 Junction Box
Provides four tap-out points for discussion units. Each
tap-out supports a single discussion units that can be
connected or disconnected without damage to the unit.
RC 6000 Redundancy Controller
Enables the connection of a redundant PS CU power
supply to protect the CU operation against power failures.
Accessories
Headphones
• DH 6021: Stereo on-ear headphones
• DH 6223: Stereo stethoscope headphones
• DH 6225: Mono ear-clip headphone
Microphones
• GM 6523: Gooseneck Microphone 40 cm (16 in.)
• GM 6524: Gooseneck Microphone 50 cm (20 in.)
• GM 6525: Gooseneck Microphone 63 cm (25 in.)
Storage Boxes
• SB 5980: Ten pieces of DC 5980 P discussion units and GM
59xx gooseneck microphones

Installation
19
Installation
Microphone units operate by connecting in series from the central unit. Power, audio, and data are transported over
a shielded Cat 5e cable from one unit to the next. This topology enables flexible and inexpensive installation for large
groups of people.
Rackmounting the CU
Install the central unit in a standard 19” rack using the supplied 19” brackets. Remove the screws holding the top and
bottom covers, then attach the brackets to the front of the unit using the same screws.
The built-in fan draws air in on the left side and exhausts air on the right, and so does not require extra space above or
below for cooling.
Cable Requirements
Shure offers cables designed specifically for the DIS line of conferencing and discussion equipment. The Shure EC 6001
are high-quality Ethernet cables available various lengths from 0.5 m to 100 m. Each cable has been tested to ensure
reliable system performance. See the accessories section for ordering information on the EC 6001-xx.
Important: Cables and connectors must be shielded for stable system performance. If an installation does not use
Shure EC 6001 cables, they must follow the Cat5e cable requirements.
Cat5e Cable Requirements
Type Cat5e (or higher) twisted pair
Shielding F/UTP or U/FTP
Connector Shielded RJ45
Weight AWG 24
Bending Radius >15mm
Maximum Cable Length •CU 5905 only: 120 m
•CU 5905 with repeater
units: 420 m
Using Patch Panels
When designing a system with a patch panel, crimp the cable to the female shielded connecter on the panel. Then simply
use short jumper cables to connect to the discussion units. Make sure the chain is always terminated by a discussion unit
or a termination plug included in the SPS CU spare parts package.

Installation
20
Connecting Microphone Units
Microphone units are connected in sequence (daisy-chain) using the two RJ45 ports. The connectors are interchangeable;
simply connect the previous unit to one port, and the following unit to the other port. Always use shielded Cat5e (or higher)
cabling for reliable system performance.
To protect the equipment, ensure that the Central Unit (CU) is always off when connecting or disconnecting the
microphone units.
1. Power off the CU to protect the equipment during set up.
2. Connect the CU A B Chain output to the first microphone unit with the shielded Cat5e cable.
3. Connect the rest of the microphone units in sequence, using the RJ45 jacks on the bottom of each unit.
4. Turn on the CU by pressing the power button. The microphone units will power on. The unit is stable once the control
button LEDs stop flashing.
Note: Do not turn off CU power until the system has stabilized