Biamp Cambridge Qt 300, CambridgeQt 600 Installation And Operation Manual

Qt® 300/600

Installation and Operations Guide

345

Table of Contents

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Qt 300/600 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Sound Masking Emitter Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Installing the Control Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Wall Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Rack Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Installing the Qt Emitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Standard Emitter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Active Emitter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Installing Paging or Music to the Audio Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Installing Contact Closures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Custom Cabling Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Important Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

System Conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

System Congurable Feature List (Front Panel / MCS) . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Conguring the Control Module for the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Front Panel Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

System Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Setting Sound Masking Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Setting Audio Input Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Lock/Unlock the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Congure Network Name and IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Real-Time Clock or Network Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Reset System to Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

System Control Using Monitor Control Software (MCS) . . . . . . . . . . . . . . . . . . . . . . . . . . 20

DHCP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

MCS: Operation Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Setting Emitter Type and Masking Spectrum per Zone . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Changing Masking Level Using MCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Auto Ramping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Changing Inputs A and B Min/Max Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Auxiliary Line Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Time of Day Masking and Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

MCS: Administration Section . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Zone Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Networking and Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Notication of Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Date and Time – Time Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Setting Equalizers and Emitter Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Equalizer Update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Emitter Network Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

MCS: Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Links to Help Topics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Operations and Administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Software Update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

MCS: Printout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Error Codes and Clear Error . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Post-Installation Hando󰀨 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6

Safety Information

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water. Indoor use only.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including

ampliers) that produce heat.

9. Use only power supply provided with the unit.

10. Do not defeat the safety purpose of the polarized or grounding-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 wide
blade or the third prong is provided for your safety. If the provided plug does not t into your outlet, consult
an electrician for replacement of the obsolete outlet.

11. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and
the point where they exit from the apparatus.

12. Only use attachments/accessories specied by the manufacturer.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualied 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.

15. This product contains a lithium battery that is not user replaceable. The battery may be replaced by

qualied service personnel only.

DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED.

REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE.

!

7

Qt 300/600 Introduction

This manual discusses the installation of a sound masking system using either the Qt 300 or the Qt 600. The
Qt 300 and Qt 600 controllers have identical functionality, but di󰀨erent number of zones supported - the Qt

300 supports 3 zones whereas the Qt 600 supports 6 zones. As you use this guide, remember the number of
zones and total area of coverage is the only real functional di󰀨erence between the systems. Collectively, the
systems are referred to as ‘QtPro’ throughout this guide.

The Qt 600 supports six zones of sound masking, each with 1 to 120 Standard Emitters covering 100 to 12,000
square feet (9.3²) - 1,115²) per zone. The Qt 300 supports three zones of sound masking, each with 1 to 120
Standard Emitters, covering up to 12,000 square feet per zone (1,115²).

Sound Masking Emitter Types

There are two di󰀨erent sound masking emitter choices for consideration, both are direct eld devices meaning
that they are mounted downward for direct unimpeded transfer of an audio signal to the listening location.

Qt Standard Emitter – Is a passive audio loudspeaker device suitable for sound masking and limited output

level paging applications. This emitter receives an amplied signal directly from the QtPro control processor via
a UTP category cabling infrastructure. Maximum sound pressure levels with this type of emitter are 55 dBA at 1
meter with a sound masking frequency response of 200Hz to 6.3kHz.

Qt Active Emitter – Is an active (self-powered) audio loudspeaker device suitable for sound masking as well

as paging/ background music environments. This emitter contains an internal amplier which receives the
audio signal directly from the QtPro control processor in addition to a direct current voltage which powers the
Qt Active Emitter device. Both power supply(s) and voltage injectors are required for operation in addition to
the QtPro control processor. Maximum sound pressure levels with this type of emitter are 74 dBA @ 1 meter
with a sound masking frequency response of 125Hz to 8 kHz.

Each system comes with two audio inputs which can be used for paging and/or music. Additional controls for
each zone include time-of-day masking, auto ramping, self-monitoring fault detection and notication, and
independent equalizers for masking and audio inputs. The system may be operated from its control module
front panel or by a computer directly connected to the module or by a computer connected through a local
area network. See system conguration on page 15.

It is important that the control module’s masking volumes be set correctly for each zone to obtain the full
e󰀨ectiveness of the system. If volumes are set too low, speech privacy will be reduced and work place
distractions will be much more apparent. If volumes are set too high, the masking sound itself could become a
source of distraction. The higher the setting that can be used comfortably, the better the acoustic privacy. For a
given open o󰀩ce design, including ceiling height, ceiling material and workstation panel height, we can dene
the masking volume required to achieve “normal acoustic privacy,” i.e., when it is relatively easy to ignore
surrounding conversations. For a very large range of open o󰀩ce designs, the target level is in the 45–48 dBA
range, measured 3 ft (0.9 m) above oor level. Similarly, for private o󰀩ces, based on wall panel design and
ceiling construction, we can dene masking volumes required to achieve “condential privacy,”
i.e., conversations in adjacent o󰀩ces cannot be understood. Most private o󰀩ces have a target level in the
38–42 dBA range, averaged spatially within the o󰀩ce.

8

Setting the masking volumes can be approached in one of two ways:

BEST: If a sound level meter is available, it is recommended that the control module’s masking volumes be

adjusted up or down to achieve the following readings on the meter:

• Private O󰀩ce Zones: 38-42 dBA, averaged spatially within the o󰀩ce

• Open Area Zones: 45-48 dBA, measured 3 ft (0.9 m) above oor level

OTHERWISE: If a sound level meter is not available, the above levels are likely to be achieved in most

environments by setting the control module’s masking volumes as follows:

• Private O󰀩ce Zones: 05-09, for all ceiling heights

• Open Area Zones:

• 11-14, for 8 ft (2.4 m) ceilings

• 13-16, for 10 ft (3 m) ceilings

• 15-18, for 12 ft (3.7 m) ceilings

Masking volumes must be set su󰀩ciently high to improve speech privacy and reduce distraction but not so high
that the masking sound becomes objectionable. Settings within the above ranges should accommodate both
objectives. As a general rule, use the high end of the range. Base nal settings on site conditions and customer
preferences. If people object to the sound level, set masking volumes toward the bottom of the range or refer
to the ‘Ramping’ section of this guide, found on page 22 for more information on introducing masking into the
space gradually. Remember that the e󰀨ectiveness of the system relies on su󰀩cient masking sound level and
that initial objections are often overcome as people become accustomed to the sound.

Di󰀨erent day and a night volumes may be set. The control module ramps linearly between these two settings
beginning at the time specied and over the period of time specied. As the control module ramps between

settings, the current volume is displayed under “Current.”

NOTE: This document uses the QtPro software version 6.6.0 or higher for feature conguration.

9

Hardware Installation

Installing the Control Module

NOTE: Always plug/unplug power supply at wall outlet.

NOTE: The Qt 600 is shown in the gures, but the Qt 300 installs in the same manner.

Wall Mount

Mount the bracket using the three screws and plastic anchors (mollies) provided. Use a 1/4 inch drill bit for the
anchor hole. See Figure 1.

Plastic anchors are #10-12 x 1 1/4 in with #10 x 1 1/2 screws.

NOTE: The control module hinges forward for wall mounting and cable installation. To hinge forward, loosen

screws A and B (see Figure 1) used to secure the module during shipping.

Check to see that the panel lock switch is in the UNLOCKED position.

Rack Mount

Attach optional rack mount brackets to each end of the control module.

NOTE: When rack mounted, the control module does not hinge forward.

10

Step 1

Remove the QtPro and power supply bracket from wall mount

bracket.

Step 2

Reassemble power supply to right rack mount bracket using 6-32
black screws (included with bracket).

Step 3

Fasten left and right rack mount brackets to QtPro using the screws

removed in Step 1.

Step 4

Mount QtPro to 19” cabinet rail using 10-32 screws as shown
(included with bracket).

Installing the Qt Emitters

Important Considerations:

• Each run has a maximum of 60 Standard Emitters or

• 50 Active Emitters

• Each run should have a maximum length of 1000 ft (305 m).

• Each home run cable attached to the control module should be

labeled by zone # and run #. Adding a logical name (e.g. Mar­keting, Private O󰀩ces) is suggested. In addition, ll out “Home
Run Zone Destination Record” at the end of this Guide.

• Each zone has two identical outputs, run 1 and run 2. All emit­ters on run 1 and run 2 are controlled equally for each zone. All
emitters per zone must be the same type (Standard or Active).

• Each job-made cable should be manufactured according to
ANSI/TIA/EIA Standard 568-B. See custom cabling guidelines

on page 14.

• Job-made cables should be tested with a LAN tester before installation. Adjustable emitters should be set
for lower sound levels, within a zone, when sound level measurements show an acoustically loud subsec­tion.

Standard Emitter Installation

1. Set the masking output level of all Standard Emitter zones to level 20.

2. Refer to the emitter layout and wiring diagram provided by the dealer for cable run connections by zone.

3. Run home run cables from control module to the location of the rst emitter for all runs in all zones.

11

4. Gather all ceiling tiles (per layout drawing) that are to receive emitters. Use the supplied hole saw to cut

holes in designated tiles. Cut all tiles from the front. (Di󰀨erent types of emitter housings are available to
attach in areas where there are no suspended ceiling tiles.)

5. Push the emitter through the front of the hole in tile and secure it by pushing down and twisting the locking
ring at the back of the emitter.

NOTE:

• The “tombstone” hook on the back of each emitter is next to the INPUT jack.

• This can help you nd the INPUT jack by touch.

• To adjust for unexpected obstacles such as sprinkler heads, each emitter maybe moved up

to 2 ft. (one tile or 0.6 m) in any direction.

6. Connect a run cable from the specied zone OUTPUT jack on the module to the INPUT jack of the rst
emitter. Listen to each emitter as it is connected. If you cannot hear its “whooshing” sound:

• Try a di󰀨erent emitter.

• Test all four previous cables for continuity and shorts. Repair any faulty cables.

• If there is a short, circuit protection will engage, and masking volume will shut o󰀨. Once the short is xed, the protection

state should clear itself in approximately ve minutes.

7. Connect the next OUTPUT cable to the emitter OUTPUT jack.

8. Run the cable to next designated tile specied on emitter layout and wiring diagram. Tie cables up to

structure or suspend from deck as required by local building code.

9. On the next emitter, connect this cable to the INPUT jack.

10. Repeat Steps 4 through 9 for the remaining emitters on the home run.

11. Set sound masking volume levels for each zone, using either the front panel controls or the software

interface. Set sound levels according to Table 1.

12. If a small area within a zone exhibits a perceived volume louder than the rest of the zone, due to a
di󰀨erence in acoustics, use the adjustable rocker switch on the back of each related emitter to turn the
volume down (by 3, 6, or 9 dB from the value set at the controller). See emitter spec sheet for more details.

Be sure to x any problems and hear the “whooshing” sound before installing the next emitter. If necessary see
the Error Codes section of this guide, found on page 32.

Active Emitter Installation

Before masking output volume can be set for zones with Active emitters, the emitter Type and Masking
Spectrum for those zones must to be congured within the MCS software. Refer to the MCS Operations

section later in this document.

NOTE:

• The input jack of each emitter bears this symbol and is located near the safety tie o󰀨.

• The output jack of each emitter bears this symbol.

12

Table 1

Zone Type Ceiling Height Vol. Level Intended Result

(at listener ear level)

Open O󰀩ce Areas < 9’ (2.75m) 11-14 45-48 dBA
Open O󰀩ce Areas 9’-10’ (2.75-3m) 12-15 45-48 dBA
Open O󰀩ce Areas 10’-11’ (3.0-3.3m) 13-16 45-48 dBA
Open O󰀩ce Areas 11’-12’ (3.3-3.6m) 14-17 45-48 dBA
Open O󰀩ce Areas >12’ (3.6m) 15-18 45-48 dBA
Private O󰀩ce Areas ALL 4-8 38-42 dBA

Installing Paging or Music to the Audio Inputs

1. Be sure power is OFF by unplugging power cord from wall outlet.

2. To install balanced audio input (most often, but not always characteristic of paging systems): Connect

signal wires to + and - at input A or B. Connect the shield to GND at the audio source.

3. To install unbalanced audio input (typical of music systems):

• Mono Signals: Connect signal wire to both L and R at input A or B. Connect the ground wire to GND.

• Stereo Signals: Connect signal wires to L and R at input A or B. Connect the ground wire to GND.

4. If a music source is to be connected, using Input B allows emergency music shut-o󰀨. See Installing Contact

Closures below.

Installing Contact Closures

The QtPro provides an instant shut-o󰀨 capability for masking and/ or audio Input B if connected to a contact
closure interface. The contact closure utilizes the same style connector as audio Inputs A and B (4-pin).

To leverage this feature for masking, connect a two-conductor cable to the two connectors, labeled M3V
and MGND. To leverage this feature for Audio Input B, connect a two-conductor cable to the two connectors,
labeled B3V and BGND.

The other end of these conductors (treated as pairs/circuits) can be terminated on closure mechanisms of your

choice:

1. To shut o󰀨 masking, form a connection between the two “M” conductors.

2. To resume masking, break the connection. (Don’t break the connectors as you may want to reuse them.)

The contact closure for audio Input B follows the same logic.

13

Custom Cabling Guidelines

Important Considerations

1. Use solid conductor 24 AWG CAT-3 cable that meets local code requirements.

2. If the system is installed in a return air plenum, the cable must be plenum rated.

3. Shielding is not required. Unshielded twisted pair (UTP) cable is acceptable.

4. Snagless boots are not required.

5. RJ-45 plugs must use the “bent 3-tine” RJ-45 plugs intended for use with solid core CAT wire. Three-

tine plugs can be purchased at a hardware store and from most CAT cable suppliers. DO NOT USE
the “aligned two-tine” type intended for stranded wire, as they provide improper contact and may yield
intermittent system operation. The diagram below shows the cross section view of both types.

CORRECT

RJ-45 Connector with bent type

6. Field test each cable after fabrication with the RJ-45 connectors (before nal installation), using a standard
network LAN cable tester, to check for continuity, shorts, and 1:1 (straight through) connection.

INCORRECT

RJ-45 Connector with aligned type

Battery Replacement

A coin-style battery (Cr1220 or Br1220) powers the real time
clock during a power loss.

To replace the battery:

1. Unplug the control module from wall outlet.

2. Hinge the control module forward to access the connection
panel.

3. Remove the zone run connections. They should already be

labeled, if not, label before removing (for example: Zone 1
Run 2).

4. Remove the six screws that hold the panel.

5. Taking care not to disturb the other connections, lift the

panel to expose the coin battery in its housing at the front left of the module. See Figure 3.

14

6. Use a ball-point pen to dislodge the existing battery.

7. Insert a new battery with the positive (+) side facing upward.

8. Replace the connection panel, securing all six screws.

9. Reconnect the zone run cables.

System Conguration

After the QtPro is mounted, the power can be turned on and settings modied to test wiring to the connected
emitters. After testing, it is time to congure the controller for operations. There are two methods for performing
conguration:

1. The front panel display can be used for basic conguration settings to get the system working and tested.
In many cases, basic settings are all that a user needs. This interface only supports a subset of the
functionality.

2. The MCS (Monitor Control Software) interface allows for conguring all the available functionality. The MCS
can be used with any internet browser that can connect to the Qt 300/600 over a LAN connection. See
System Control Using MCS on page 20 for details.

System Congurable Feature List (Front Panel / MCS)

The following is a complete list of the Qt 300/600 features and if they can be congured through the front

panel, MCS, or both:

Feature Front Panel MCS

Set masking level for each zone independently X X
Setting audio input levels at each zone X X
Setting real-time clock or network clock use X
Reset system to default settings X
Congure netowrk name and IP address X
Set Time of Day Masking X

Set Auto Ramping Period X
Set Masking Equalization X

Viewing errors X X
Conguring error notication X
System/Software version information X X
Emitter Fault Detection X X
Networking and Security Administration X
Software Update X
Contact Closure (hardware only)
Lock/Unlock the front panel (hardware only)

15

Conguring the Control Module for the Network

IP Address DHCP

The IP address is preset for systems that are not on the network. To directly connect to the control module over
Ethernet, use any internet browser and placee the IP address or control module name in the navigation bar.

If the MCS is not used, DHCP will allocate an IP address when the system is connected to the network.
This eld can be statically set through the MCS, but it will be dynamically allocated when MCS is not used.

NETBIOS Support

The system supports NETBIOS and advertises its Hostname as QtXX, where XX is the last two digits of the

MAC address.

Other Recommended Connections

Access to an SMTP server enables the sending of error notication emails.

Access to an SNTP server obtains the SNTP time stamp. If the SNTP server is enabled, the real-time clock
feature is disabled. A time server other than the default time server may be specied in the Administration

section under date and time.

Suggestions for Managing Multiple Control Modules

Browser bookmarks are a convenient tool for managing multiple control modules. A bookmark add-on stores
bookmarks on a web server and allows access from any computer on the LAN.

Create a “Sound Masking” folder (under Bookmarks) to hold a bookmark for each control module.
Use location-based names for each module’s bookmark. To access a specic control module, open
Bookmarks>SoundMasking, and select the specic module bookmark.

Front Panel Control

The front panel is used for conguring basic functionality and initial system test. For advanced system
conguration, the MCS is required. Once the MCS is used to congure the system, it should be used
exclusively. Otherwise, using the front panel will erase the settings congured by the MCS.

System Information

Initial display of the front panel, shown below, shows the software version and system status.

The VERSION X.X.X indicates the following elds: major release; minor changes; bug xes. The HxBx format
is to identify the version of the internal code and, on rare occasions, used as reference for technical support.
Status indicates if there are errors (see Error Codes and Clear Error on page 32) or if the system is OK.

The MAC address is displayed for reference when the system is on the network. The network administrator will
need this when conguring a network connection.

VERSION X.X.X
Status: OK HxBx

16

Shown in the next block is the display for the IP Address. This is a default value that can be used in a browser,
for direct connection. As noted, DHCP will change it when the system is on a network.

IP AddressDHCP

169.254.1.1

The Host Name is set at the factory to a default value.

Host Name
QT XX

The next 2 blocks show the username and password when connecting using MCS. The default username is
admin. The default password is secret.

Username admin

Password secret

A warning message is displayed on the front panel after the MCS is used for conguration (Warning: Time of
day Ops). This tells anyone about to use the front panel that the MCS has been used for conguration which
means that using the front panel will reset the settings made by the MCS.

Setting Sound Masking Levels

The format of this front panel shows one type of format for conguring masking. The zone emitter type is set to
AE (Active Emitter). Z1 stands for zone 1 and it is currently set to mute.

Masking Ot AE
Z1 Volume: Mute

The zone emitter type for zone 2 is set to Qt Standard Emitter.

Masking Ot
Z2 Volume: 2.5

See the Introduction section on pages 8-9 for recommended volume settings.

Settings within the recommended ranges should optimize speech privacy without excessive distractions.
Generally, set masking volumes toward the high end of the range and adjust according to site conditions and
user preferences. If possible, measure the results with a sound level meter and check for the achieved sound
pressure level. Adjust as necessary or judge by listening in the area.

17

If installation occurs before the o󰀩ce is occupied, turn the system to the desired level and leave it at that
level. If the system is installed after the o󰀩ce is occupied, turn the system to the correct level when the
space is unoccupied and employ auto ramping, only supported through the MCS, to provide for a period of

acclimatization.

To set the masking level for a zone, use the arrow keys on the front panel to move to the right until the zone
of interest is shown (Z1 is zone 1 which matches the rst column of ports on the back). Then use the up and
down arrows to change the value.

After setting the value for one zone, arrow to the right or left to set the value for the next zone of interest.
Repeat for all zones. If a small area within a zone exhibits a perceived volume louder than the rest of the zone,
due to a di󰀨erence in acoustics, use the adjustable rocker switch on the back of each related emitter to turn the
volume down (by 3, 6, or 9 dB from the value set at the controller). See emitter spec sheet for more details.

Important

• Prior to setting volume, set the correct emitter type. For zones with Active Emitters the emitter type must be
set to Qt AE.

• For full system e󰀨ectiveness, it is essential to set the volumes correctly for each zone.

• If the volume is set too low, speech privacy is reduced and workplace distractions are more apparent.

• If too high, the masking sound can become a distraction. Since, in general, acoustic privacy improves as
sound masking volume increases, the general strategy is to set the masking volumes as high as possible

without being distracting.

• Volume changes made via the front panel will override and pause any Auto Ramping or Time Of Day
scheduling congured through MCS. To restart these schedules login via MCS and re-apply these settings.

Setting Audio Input Levels

This gure shows the format of the panel for conguring the volume for Input A (also used to congured Input
B). The level of the input is set for each zone, where the example shows Input A is level 6 for zone 1 with

standard emitters.

Input A Ot
Z1 Volume: 6

The system has two inputs for paging or music. Either input may be connected to any or all zones via software
or front panel interface. If no paging and/or music from these inputs are desired in a particular zone, set the
audio volume level of that zone to mute.

Note that Input B is the preferred music input due to its ability to be shut down via a contact closure.

The audio input levels are set in a similar way as the masking. Use the arrows on the front panel to move left
and right to nd the Input A and Input B eld for each zone. The inputs are enabled and level set for each zone
for exibility. Arrow to each zone for each input and set the level using the up and down arrows.

18

Lock/Unlock the Front Panel

The settings of the Qt 600/Qt 300 can be locked by a physical switch on the back of the control module.
Lock the control module panel by moving the lock switch to the LOCKED position. This prevents any casual
interaction from changing the settings.

Unlock the Front Panel and Control the System

1. Loosen screws and lift the control module slightly and hinge it forward to give access to its connection
panel.

2. Move the panel lock switch to the UNLOCKED position. Close the module.

3. Press NEXT or PREVIOUS to scroll between screens for adjusting sound masking, paging or music
volumes by zone.

4. Modify a value by 1 dB on any screen by pressing + or -.

5. Press NEXT to accept a screen value.

6. After completing adjustments, lock the system.

NOTE: The system returns to the initial VERSION/Status screen after ve minutes of inactivity. Z1 indicates

Zone 1, Z2 indicates Zone 2, etc.. If an error is detected, an error code is displayed on the control module. See
page 35 for details about Error Codes.

Congure Network Name and IP Address

Creating a static IP address or controller name is not available from the front panel. The MCS software
can congure both the network name and the IP address (see below). If the system is not connected to the
network, the initial values shown on the front panel are used when connecting a PC to the QtPro over Ethernet.

If the QtPro is connected to the network, a DHCP server will dynamically allocate an IP address. The system
MAC address is used by the network system administrator to congure the DHCP server.

NOTE: When connecting a PC directly to the control module, the control module acts as a DHCP server and

serves the DHCP-enabled PC and IP address.

Real-Time Clock or Network Clock

When the QtPro is congured in the factory, the date and time is set to Jan 1. Basic operations will work
without changing this time. For any advanced features that require the time of day, either the network clock or
correct setting of the time is required.

If the QtPro is not connected to the network, it will use a real-time clock within the controller. This requires the
battery for power. This is often the way time is supplied to the QtPro.

If the QtPro is on the network, time and date will be acquired via SNTP and saved to the real-time clock. If the
QtPro is o󰀨 the network, time and date are acquired from the onboard real-time clock.

19

Reset System to Default Settings

To clear an error indication (after problem is xed) or reset the settings to the initial default state, the system

should go through a hard reboot.

Steps for the hard reboot:

1. Unplug the power and wait 15 seconds or more.

2. Hold the up arrow on the front panel and re-connect power. Release the up arrow once the LCD display

shows it is booting.

System Control Using Monitor Control Software (MCS)

The MCS (Monitor Control Software) is an interface that congures the QtPro over a LAN/network connection.
The MCS software is operated from any network browser, see page 20. Below are the instructions to connect
to the control module over Ethernet locally and over the network.

1. Read the control module’s Host Name or IP Address from the front control panel.

2. Enter either the Host Name or the IP Address into the browser address bar.

3. A prompt will appear requiring a username and password. (The default username is “admin”. The

default password is “secret”.)

After the discussion on connecting to the control module, the MCS screens will be discussed.

20

Connecting to the Qt 300/600 over Ethernet

1. System software is operated from any network browser. Software is pre-installed in the control module. The
HELP function provides comprehensive software control operating instructions.

2. Connect a computer or the network to the 10/100 Ethernet jack.

3. Power the control module on by plugging it into a standard wall outlet.

4. Press the right arrow on the control module to advance to the IP Address screen. An assigned IP address

is displayed on the front panel within two minutes of powering the module.

5. To access the Qt System Monitoring and Control Software:

6. After logging in, you may change the Host Name, Username, and Password.

DHCP Support

The system uses DHCP to obtain an IP address.

The system displays its MAC address on the front panel. This allows the network administrator to use the MAC
address to congure the DHCP server to deliver a xed (static) IP address to the control module.

MCS: Operation Screen

Operations Section in Review Mode:

NOTE: The software version is displayed at the bottom right of every screen. The 3 digits indicate major

release version, minor feature changes and bug xes. There are times when Cambridge Sound Management
will release software to x unique bugs or small feature changes, and later roll them in to a major release.
When a customer reports a problem, the software version number is usually requested. The Qt 300 will only
di󰀨er on this screen by the number of zones shown. The Qt 600 will display six, while the Qt 300 will only

display three.

21

Operations Section in Modify Mode:

The Operations Section contains three blocks. The block on the left allows zone selection and shows the
emitter conguration for each zone.

The Apply to Zones block in the middle allows the conguration of the following:

NOTE: It is not possible to select an AE spectrum with a standard Qt emitter.

• Min and Max levels for Masking outputs.

• Min and Max levels for auxiliary audio inputs A and B

• Auto ramping

• Emitter settings

• Mute and Unmute Control

The Time of Day Ops block on the right allows for the conguration of the following:

• Ramping start times

• Ramping interval

• Weekend ramping schedule

Setting Emitter Type and Masking Spectrum per Zone

To modify the emitter type and spectrum, click “Emitter Settings” and a new box will appear:

1. Select the Emitter Type and Masking Spectrum with the drop-down menu and click the Submit button. The
settings will be sent to the control module. To return to the main Operations Section click “Back”. Note that
the screen returns to the Review Mode screen.

2. When used with Active Emitters, the standard Qt spectrum duplicates the sound of the Qt emitters and
may be preferred when using Qt and Qt AE emitters in adjacent zones. The AE spectrum has more low
frequencies and a slightly warmer sound.

3. Return to the Modify Mode screen. Repeat for the remaining zones.

22

Changing Masking Level Using MCS

Follow these steps to update the parameters within the masking level block:

1. Review – selecting the REVIEW button will allow the user to select a zone and see the current
conguration. Click on the zone on the left side of the Operations Section.

2. To modify a zone, start by clicking the MODIFY button.

3. Select the zones to modify by checking the checkbox of each zone of interest on the left side of the
Operations Mode screen.

4. To set the masking level, use the multi-select for MAX and MIN settings in the middle box.

5. Select Submit to commit the values.

NOTE: Only modify one block at a time and then click the related Submit button. If you modify both Apply to

Zones masking and Time of Day block settings, then click a Sumbit button, only one block’s modication is

updated. The suggested volume setting is discussed earlier in the Introduction section.

If a small area within a zone exhibits a perceived volume louder than the rest of the zone, due to a di󰀨erence in
acoustics, use the adjustable rocker switch on the back of each related emitter to turn the volume down (by 3,
6, or 9 dB from the value set at the controller). See emitter spec sheet for more details.

Auto Ramping

The Auto Ramping function is typically used once, when the system is rst installed. The Auto Ramping
function is used to introduce sound masking into an occupied space gradually. The Auto Ramping function
allows the user to program 6 calendar dates and 3 masking levels used during the Auto Ramp for up to 3

ramps and 3 constant levels.

23

After Auto Ramp is enabled, the masking level will be set to the Start Auto Ramp level. The rst ramp will start
on the Auto Ramp Start Date until the 2nd Auto Ramp Date is reached which will set the masking level to the
2nd Auto Ramp Level. The next phase is a constant ramping level, followed by a second ramp. The second
ramp starts on the 3rd Auto Ramp date and ramps up until the 4th Auto Ramp Date which sets the masking
level to the 3rd Auto Ramp level. The next phase is a constant level until the 5th Auto Ramp Date is reached
when the nal ramp starts. The nal ramp ends on the Auto Ramp End Date with a masking level set to the
Time of Day Max level. The level will be maintained for 1 day before resuming the Time of Day schedule. The
Auto Ramp also allows skipping weekend days. On skipped weekend days the Auto Ramp will maintain its
level and not perform any ramping. Note that all dates must be in the format mm/dd/yyyy.

Changing Inputs A and B Min/Max Levels

The control module operates as a paging amplier. Refer to the control module’s specications for the electrical
characteristics of Inputs A and B. Each signal is routed to all zones. The Max and Min of the (acoustical) output
level for each signal can be specied for each zone. Set the Min and Max settings of a Zone / Input A/B to
“Mute” if you do not wish to connect the signal to the zone.

NOTE: Input B is the preferred music input, due to its ability to be shut down via a contact closure.

The audio input Min and Max levels are set in a similar way as the masking. Within the Operations Section
window, each zone has a selector for the level of input A or B:

1. Select the MODIFY button.

2. Select each of the zones to modify on the left block by clicking its checkbox.

3. Change the value in the middle block.

4. Select the Submit button in the middle block.

Auxiliary Line Level Adjustment

From the Operations Section in Modify Mode, select either Input A link or Input B link in the Apply To Zones
block to open the window shown below. The options available in the window are:

• allow the incoming level on the auxiliary input to be left at line level

• increased by 12 dB if the line level is below typical AV line level -10 dBv to +4 dBv

• decreased by 12 dB if the line level is above typical AV line level -10 dBv to +4 dBv

24

Select NORMAL SIGNAL to use the signal as it comes to the controller and adjust volume from the zone
window. Use LOW SIGNAL to add 12 dB to the signal or HIGH SIGNAL to subtract 12dB from the signal and
then continue the adjustment of volume in the zone window. Click Back to return to the Operations Section.

Time of Day Masking and Audio

QtPro allows the specication of maximum times for masking and audio volumes and minimum times for
masking and audio volumes for each zone. This allows complete exibility to when the masking or audio levels
need to be high or low. Use the pull down menus to specify each start time and the ramping interval - the
period of time allotted to accomplish the full, linear (in 0.5 dB increments for masking, 1dB for Audio) transition.

QtPro also allows you to specify Friday, Saturday, and Sunday operation. You can choose weekday operation
(Max/Min) or Min operation where the Min volume is in e󰀨ect for the entire (weekend) day.

QtPro obtains the time-of-day from either an Internet-based NTP time server using the Simple Network Time
(SNTP) protocol or from its onboard real-time clock (RTC). QtPro requires the user to dene the time zone in
which the box is operating and the daylight savings time rules for that time zone. If you are unfamiliar with your
time zone, or daylight savings time rules, a quick search on the Internet should help you nd this information.
Go to the Administration Section / Time Zone block to specify the control module’s time zone and daylight

savings time rules.

NOTE: NTP timer servers do not provide time zone or daylight savings time rules and therefore these values

MUST be specied by the administrator.

25

Errors

If the QTPro control module is operating properly, software will display Status: OK on right side of the
Operations Section. If the control module encounters an error, software will display Status: Error (with
additional data) on right side of the Operations Section. Click on the Error link on the Operations Section to
obtain additional information. Click on the acknowledge link beside the Error link on the Operations Section to
clear the error (see Notication of Errors, page 27). If the error condition persists, the error will be signaled
again after clearing the error.

WARNING: IF A “SYSTEM THERMAL FAULT” OCCURS, BE SURE THAT THE CONTROL MODULE IS

NOT EXPOSED TO CONDITIONS BEYOND ITS AMBIENT AIR SPECIFICATION OF 104°F, 40°C.

!

WARNING: IN ORDER TO PROTECT THE ELECTRONIC CIRCUITRY FROM DAMAGE, THE

CONTROL MODULE INTRODUCES A DELAY AFTER EXPERIENCING AN AMP SHORT BEFORE
TURNING THE AMP BACK ON. A PERSISTENT SHORT WILL RESULT IN THE AMP BEING TURNED
OFF ONCE AGAIN. SHORTS ARE MOST LIKELY TO OCCUR DURING INSTALLATION OF THE

!

SYSTEM DUE TO TERMINATION MISTAKES BY THE INSTALLER. SHORTS ARE UNLIKELY ONCE

THE CONTROL MODULE IS OPERATIONAL.

26

MCS: Administration Section

The following section will use this screen for reference:

IMPORTANT: Only update one block at a time and only press the related Submit button before moving on!

Changes to blocks that are not submitted will be lost if a di󰀨erent block is submitted.

Service

The Service block holds the following elds:

• Control Module Name: This is just a reference name for the control module and is not used for networking.

An example of an informative name is “120 Main Street - First Floor”.

• Location: This is a good reference to track where the control module is located when faults are detected.

Faults can be sent via email and the control module’s location can be useful.

• Serviced By: This is for getting help when there are errors/ problems. The name of the service company

can be stored. By default it is Cambridge Sound Management, but it could be changed to the installer.

• Phone No.: Cambridge Sound Management (by default)

Zone Names

Use the Zone Name block to provide informative names for each served zone. Examples of informative names
are: “Reception”, “O󰀩ces East”, “Cubicles East”, “O󰀩ces West”, and “Cubicles West”.

27

Networking and Security

Use this block to obtain the control module’s MAC and IP Addresses, to change its NETBIOS Host Name, and
to change the Username or Password for logging in. If you change the control module’s Host Name, QtPro will
automatically advertise its new NETBIOS name.

NOTE: If the control panel is locked (the lock switch on the inside of the control module is set to the LOCKED

position), the control module cannot be controlled from its front panel. If it is unlocked, the control module’s
operational parameters can be modied from the front panel.

NOTE: The Username and Password specied under the Administration Section / Networking and Security

block—to control access to the control module over the network—and the Username and Password specied
under the Administration Section / Notication of Errors block—to log into an SMTP outbound mail server—

need not be identical.

Notication of Errors

Use this block to congure access to the mail server that will be used by QtPro for sending email messages
notifying the system administrator of errors.

The Email Address is the address to which error notication emails will be sent by the control module. The
Email Server and Port are the mail server’s name (i.e., smtp.mymailservice.com) and the port that it uses for
outbound SMTP messages. If authentication is required, ll in the Username and Password. Otherwise, leave
them blank. The Username and Password represent the control module’s email account on the specied mail
server. If a username and password are specied, the email will arrive arrive with the specied Username in
the From: line. Otherwise, the email will arrive with the specied Host Name in the From: line.

To minimize the number of emails sent for intermittent errors (for example, amp thermal fault cycling in
a system exposed to excessive heat), the control module will send one email per error, until the error
is acknowledged. Once the error is acknowledged, a subsequent error will result in a new email. The
administrator acknowledges errors by clicking on the Acknowledge link that appears on the Operations Section
screen when an error is present (see Error Codes and Clear Errors page 32).

Once you have congured your email parameters, you may test your conguration by asking the control
module to generate a “test” email. To do this, click the Test link in the Notication of Errors block.. An email will
be generated and sent. If the email does not get through, you may need to modify either your conguration or
the conguration of your SMTP outbound relay (server).

Date and Time – Time Zone

The QtPro can use a network clock or the RTC in the unit. The date and time for the RTC are set within this
window.

28

If the RTC is to be used, it should be set prior to adjusting operating levels. The RTC is set using the pull-down
menus under “Administration: Date and Time”. You MUST set the day-of-the-week (e.g. Sun, Mon, Tues, etc.),
the date, and the time. The RTC will only be used if the control module has been unable to access an external
time server since it was powered on. This may be because the control module is not on a network or because
the corporate network’s rewall prevents access to the Internet based servers.

WARNING: MANUALLY CHANGING THE RTC’S TIME/DATE VIA THE “ADMINISTRATION: DATE

AND TIME” WINDOW SHOULD NOT BE ATTEMPTED BETWEEN THE HOURS OF 12:00 AM AND
2:00 AM ON DST TRANSITION DAYS (TWO PER YEAR). DOING SO COULD RESULT IN A MISSED

!

“SPRING AHEAD” OR “FALL BEHIND” EVENT. SET THE DATE AND TIME BEFORE MIDNIGHT ON A

DST TRANSITION DAY OR AFTER 2:00 AM ON A DST TRANSITION DAY.

The source for the control module’s time stamp is listed next to the time stamp as either SNTP or RTC.

If the date is wrong following a power failure, and the system is relying on the internal RTC and not a network­based time server, it is likely that the RTC’s battery is depleted. Replace the battery (see Battery Replacement,
page 14). Reassemble the control module and then plug it back into the wall outlet. Reset the RTC, either
manually or by connecting the controller to the LAN via SNTP.

Setting Equalizers and Emitter Fault Detection

A special, second-level login password is required to gain access to the Emitter Network Fault Detector (ENFD)
Screens; for control modules running rmware 6.0.0 and higher, it is “prosecret”. For control modules running
rmware prior to 6.0.0, please contact Cambridge Sound Management to obtain the special password(s) for
your module(s). You will need to provide the Mac Address of each control module. See the Administration
Section / Networking and Security block for the MAC Address, or it can be seen on the front panel.

Below are the screens for emitter fault detection and equalizer settings when logged in with the second-level
password.

Equalizer Update

After logging in with the second-level password, the operations sections will have a block that includes the
equalizer settings. The Masking and Audio equalizers are congured by the factory and should not need to
be modied in most installations. However, if desired, the equalizers may be used to adjust the system to a
di󰀨erent masking, paging, or music spectrum.

You may specify the gain for a tap in its corresponding box. All values are measured in dB and the range is
+/- 12 dB, in whole number increments. To specify a negative gain, precede the number by a minus sign (for
example, -2). Once you have specied all of the taps of interest, press each related Submit button. The values
will be changed and saved, and the equalizer will redraw to provide a visual representation of your settings.

When an equalizer’s settings are modied, the control module calculates and reports the impact the new
settings have on speech privacy. The report is shown in the Masking Equalizer control box and is stated
in terms of change to the Privacy Index. A change must be at least 1% for it to display. The calculation is
performed as specied in “ASTM International; Designation: E1130-02, Standard Test Method for Objective
Measurement of Speech Privacy in Open O󰀩ces Using Articulation Index”.

29

Operations Section with the equalizer block displayed after a higher level password has been entered:

Emitter Network Fault Detection

The ENFD is a feature used after installation to monitor the status of the emitter cable runs. As shown on the
screen, the installation should be complete without defect before the ENFD feature is enabled. The installation
is completed by following the steps for installation, ensuring all the emitters are working and there are no error

codes displayed.

The ENFD feature will start taking measurements of the cable runs after power is applied. It will take 15
minutes after booting for the equalizer to learn the emitter network and determine the steady state of the

system.

Standard view of the ENFD conguration section:

The diagram on page 29 shows the window as it appears and when the system is learning the network
conguration.

30

After the 15 minutes are expired and the system is fully installed, it is time to enable fault detection, if you
desire. It is not required for proper operation. The window shown below shows that after the 15 minutes have
expired there is a drop-down menu in the upper right corner that allows 3 actions:

1. Refresh settings - this is used just before enabling ENFD to make sure any setup data is cleared and
proper measurements will be taken. This can also be used after an error has been xed and a new test can

begin.

2. Enable fault detection - once this is selected, select the zone in which you want the emitter run monitored,
by choosing the Submit button.

3. Disable fault detection - this is used to turn o󰀨 the feature before you press the Submit button for each run.

If there is a fault, an error code 4 will be displayed for that failed zone in the status block.

ENFD adjustment drop-down menu:

MCS: Help

31

Links to Help Topics

From the Help screen on the MCS, there are links to some common questions when using the MCS. The main
link to the Help document is shown on the right under the caption for support.

Operations and Administration

This information is also contained within this document.

Software Update

This is a link to the Cambridge Sound Management web site for access to the latest software. When the
user selects the link from the MCS, it displays the current software on the control module and the version of
software available to install.

The install directions are provided with the new software for convenience and not part of this document.

MCS: Printout

This screen displays the current conguration of the system. This screen should be captured and stored in
case of data loss or system failure. Printing is done through the web browser print option.

32

Error Codes and Clear Error

System errors are shown on the control module front panel display. If an error occurs, the message “Status:
Error” will be displayed on the control panel. To determine the cause of the error, press NEXT (right arrow
button), to display the error code.

Error Codes

If one or more errors exist in the sound masking system, an eight-digit error code is displayed on the LCD
display (scroll forward to the “Error” screen).

Where a number other than 0 indicates an error:

Error: 0_000000

Error Code for Zone 1

Reserved

Error Code for Control Module

Examples

Error: 0_000001: Short sensed in the wiring of the zone.

Error: 0-000004: Emitter not working

Error: 2_000000: Over temperature

Error: 4-000000: Intermittent fault

Error: 8-000000: Contact the Manufacturer

MCS Error Display

When there is an error in the system, the Operations Section will show a Status in red as shown.
Beside the Status are the links “Error” and “acknowledge”, which are described below.
Click the Error link to open a window that details the error in the system. The format of the error string

33

is the same as shown on the front panel. The Error result pop-up below shows there are emitter faults
in 3 zones and the administrator should look for nonfunctional emitters.

Click OK to close the Error result pop-up window.

Click the acknowledge link and the Status displayed goes back to OK. If the actual error persists, the Status
will eventually change to report the same error again. This can be used to test problem resolutions.

Post-Installation Hando󰀨

Perform a nal walkthrough to satisfy all aspects of the system performance, as follows:

1. Fill out the “Home Run Zone Destination Record” at the end of this Guide.

2. Store the Guide with completed settings record in the clear plastic job ticket holder next to the control

module. System settings are retained after a power outage. If there is a hard module failure, the recorded
values can be used to recongure the system. Lock the control module panel by moving the lock switch to
the LOCKED position.

3. Lift the control module front panel and hinge it backward into its closed position. Tighten all retaining
screws.

4. If operating by software control, show the administrator how to connect to the control module using both the
Host Name and IP Address methods. Share this Guide with the administrator.

34

Warranty

Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the user will be required to correct the interference at
his own expense.

Modications not expressly approved by the manufacturer could void the user’s authority to operate the
equipment under FCC rules.

Warranty Coverage — Qt® Emitters

Cambridge Sound Management, Inc. (the “warrantor”) will, for a period of ve (5) years, starting with the
date of purchase, warrant that the Qt® Emitters (the “speakers”) will be free of defects in materials and
workmanship that interfere with proper operation as a sound masking, paging and music speaker system.
During that period, the warrantor will, at its option, either (a) repair the speaker, or (b) replace the speaker. The
decision to repair or replace will be made by the warrantor.

Warranty Coverage — ST 1000 control unit

The warrantor will, for a period of ve (5) years, starting with the date of purchase, warrant that the Qt control
unit (the “system”) will be free of defects in materials and workmanship that interfere with its proper operation
as a sound masking, paging and music distribution control system. During that period, the warrantor will, at
its option, either (a) repair the system, with new or refurbished parts, or (b) replace the system with a new or
refurbished system of equal functionality at no charge. The decision to repair or replace will be made by the
warrantor.

All software installed in the Qt system is warranted to substantially conform to its published specications. In
no event does the warrantor warrant that the software is error free or that the customer will be able to operate
the software without problems or interruptions. The warrantor will, from time to time, make available software
bug xes. It is the responsibility of the purchaser to download and install these software modications.

Except for the forgoing, all software and software upgrades are provided AS IS.

The following terms apply to all

These warranty terms are extended only to the original purchaser of a new product. A purchase order or other
proof of the original purchase date and purchaser is required for warranty service.

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Obtaining warranty repairs:

Please access and review online help resources for the product before requesting warranty service. If the
product is still not functioning properly after making use of these resources, please contact Cambridge Sound
Management for a return authorization number. All returns are to be prepaid. The warrantor will pay return
surface freight within the continental United States on warranty repairs. All customs and freight charges in
excess of surface freight within the United States will be borne by the purchaser.

Warranty Limits and Exclusions

This warranty ONLY COVERS failures due to defects in materials or workmanship, and DOES NOT COVER
normal wear and tear or cosmetic damage. THIS WARRANTY DOES NOT COVER USE OF THE SYSTEM
WITH ANY OTHER SPEAKER OR EMITTER MANUFACTURED BY ANY ENTITY, ORGANIZATION OR
COMPANY OTHER THAN CAMBRIDGE SOUND MANAGEMENT, INC. OR USE OF THE SYSTEM FOR
ANY PURPOSE OTHER THAN SOUND MASKING AND/OR PAGING AND/OR MUSIC DISTRIBUTION. THIS
WARRANTY DOES NOT COVER THE USE OF ANYTHING OTHER THAN CAT-3 OR EQUIVALENT, 24
GAUGE CABLING. The warranty ALSO DOES NOT COVER damages that occurred in shipment, failures that
are caused by products not supplied by the warrantor (e.g., replacement power supplies) or failures that result
from accidents, misuse, abuse, neglect, mishandling, misapplication, alteration of any

sort, installation, use as a system driver during speaker installation, set-up adjustments, misadjustment of
controls, improper maintenance, power line surge, lightning damage, power surges, modication, rental use,
service by anyone other than the warrantor or damage that is

attributable to acts of God.

THERE ARE NO EXPRESS OR IMPLIED WARRANTIES EXCEPT AS LISTED UNDER “WARRANTY
COVERAGE.” THE WARRANTOR IS NOT LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL
DAMAGES RESULTING FROM THE USE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS
WARRANTY. As an example, this specically excludes damages for lost time, lost use of the system, cost
of removal or reinstallation of the system or travel to and from the purchaser’s location. ALL EXPRESS AND
IMPLIED WARRANTIES ARE LIMITED TO THE PERIOD OF THE WARRANTY.

This warranty provides specic legal rights, and there may be others that vary from state to state or in the
country of compliant use.

Therefore, certain additional exclusions may apply.

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cambridgesound.com 800.218.8199

Dynasound is either a trademark or registered trademark of Biamp Systems, LLC in the United States and other countries. Other product names referenced may be trademarks or registered marks of

their respective owners and Biamp Systems is not a󰀩liated with or sponsored by these companies. All specications are subject to change.

Visit cambridgesound.com for the latest specication information.