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   Qt X Sound Masking System 

 

 

        

Installation and Operation Guide 

  

                                          page 13 

           

EMITTER INSTALLATION 

(Qt X 300/600 models)

Each cable run has a maximum length of 1000 ft (305m). 
The tables that follow give the number of emitters that may be installed in a given 

cable run, output, etc. per Qt X device. Each output has two identical runs (A and 

B). The emitters in both output runs are controlled equally and 

must

 be of the 

same emitter type. 

Qt X 300 - Emitter Installation Totals 

Emitter Type

Per Cable Run

Per Output

Total (3 Outputs)*

Standard

60

120

360

Active

50

100

300

Qt X 600 - Emitter Installation Totals

Emitter Type

Per Cable Run

Per Output

Total (6 Outputs)*

Standard

60

120

720

Active

50

100

600

* Output total assumes the same emitter type in each output. Total emitter counts 

will vary per device if both standard and active emitters are present in a system.

NOTE:

 for open ceilings or other installations that do not secure to a tile, other mounting 

options  are  available  (such  as  hanging  pendants).  See  Biamp's  product  offerings  for 

information.

NOTE:

 Active and passive emitters are installed identically. On the passive emitters, the 

input and output ports are labeled as such: INPUT, OUTPUT. 

On the active emitters, the input is labeled 

  and the output as  

. The input 

can be located by identifying the jack nearest the seismic keyhole  on the rear 

of the emitter
It is critically important that the emitters are wired / located following the layout 

and wiring diagram from the Design Team to prevent any signal interference. In 

addition, please review the general emitter placement and wiring information on 

pages 14-18

NOTE:

 For Active Emitters, a Qt Power Injector (purchased separately) will need to be 

installed directly adjacent to the first emitter. Each output on the power injector can power 

up to 25 Active Emitters (up to 50 for each cable run). A Qt Power Supply (also purchased 

separately) is necessary to power the injectors and can power up to six (6) Qt power 

injectors (

Figures 16-17

).   

1.  Determine emitter installation locations based on 

the system plan provided by the Design Team.  

R

un  cables  from  the  controller  to  the  first  emitter 

location for each run per output (Figure 15). Label 

the cabling such that the location of the run is easily 

identifiable at the point of connection 

to the Qt X. For example: Output 1A 

- main office, Output 2A - Lobby, etc.

2.  Ceiling tile mounting - use an 

appropriate tool and drill a 2.5" 

(64mm) size hole in the center of 

the appropriate ceiling tiles. Cut from 

the front of the tile. A hole saw bit is 

included with Qt X 300/600 models. 

Other mounting options are available 

for open and structural ceilings. They include: Beam Brackets, Pendant 

Mounts, Drywall Mounts, New Construction Brackets, Plenum Back cans, 

and Universal Brackets.

3.  Power on the Qt X controller and set the standard 

sound masking level to 0 dB for the desired output 

# and associated zone. 

4. 

Install  the  first  emitter  in  the  ceiling  tile  by 

 

pushing the emitter through the front of the hole in 

tile and securing it with the locking ring. Connect 

the cable run from the Qt X output RJ45 connector 

to the INPUT connector of the first emitter (Figure 16). 

The input jack has the 

rounded tab above it and can help if you can't see it easily.  

Tile Front

Figure 12.

 Emitter runs from the Qt X 300/600 controllers

(Qt X 600 panel shown)

Summary of Contents for Cambridge Qt X

Page 1: ...and audio installations of up to 72 000 square feet 6 689 m Outputs can be assigned to a zone and then the zones are adjusted for masking and audio levels and spectra Qt X 300 600 models have preset...

Page 2: ...ng before installing a system Sound masking is the addition of a specifically tailored frequency signal which is added to a listener s environment to increase speech privacy In open offices the additi...

Page 3: ...ones as required Assign controller outputs to zones Create music paging Audio Sources and assign to Zones ensure emitter type in use supports audio sources Define behaviors of input and outputs Set zo...

Page 4: ...t Maximum Number of Standard or Active Emitters Qt X 300 600 Qty 60 per Output run A or B Qty 120 per Output total A B Qty 25 per Injector Output Qty 50 per Injector Qty 100 per paired A B outputs req...

Page 5: ...Active Both runs on an output are matched in all settings and are detailed on pages 16 18 1 LCD Display The LCD display indicates system statuses and parameters Users may navigate through the display...

Page 6: ...and rotate forward as shown Figure 3 IMPORTANT If using the wall mount bracket as a template to drill into the wall remove the bracket from the Qt X prior to drilling to avoid getting debris in the Qt...

Page 7: ...on view of both types Field test each cable after fabrication with the RJ 45 connectors before final installation with a standard network LAN tester to check for continuity shorts and 1 1 straight thr...

Page 8: ...pin See Figure 5 To instantly mute sound masking connect a two conductor cable to the two contact closure connectors labeled 1 Gnd To use this feature with audio configured as Push to Talk Input 2 on...

Page 9: ...and GND Switching the output to Active Low indicates the selected zone is unmuted Output Talk Now Provides indication of the state of the Push to Talk Contact Input 2 or any available IO port configu...

Page 10: ...is as follows Privacy 1 Connect the positive lead of a privacy sign to Pin 1 and GND observe polarity Select a zone in the Zone Name dialog to associate the Privacy light to a specific sound masking...

Page 11: ...2 For mono unbalanced line level signals connect the positive and negative terminals Place a short jumper wire between negative and GND terminals as shown in Figure 9 2 below 3 For stereo line level...

Page 12: ...pe of emitter are 60dBA at 1 meter with a sound masking frequency response of 200Hz to 6 3kHz Qt Active Emitter The active emitter is a self powered audio loudspeaker device suitable for sound masking...

Page 13: ...placement and wiring information on pages 14 18 NOTE For Active Emitters a Qt Power Injector purchased separately will need to be installed directly adjacent to the first emitter Each output on the p...

Page 14: ...ce sound try the following troubleshooting steps Try a different emitter Test the four 4 previous cables in the run for continuity and shorts Repair or replace faulty cabling If a short is present cir...

Page 15: ...for the room size Figure 15 10 x 8 room layout with 2 x4 ceiling tiles Telephone Rooms Exam Rooms Mothers Rooms Emitter Spacing It is permissible to install a single emitter in very small spaces to ga...

Page 16: ...nce 1000 ft 304 8m Qt Passive emitters Room Control QT RC3 Accessory option VERY IMPORTANT Use of the Qt RC3 room control is ONLY recommended for zones broadcasting background music or paging and only...

Page 17: ...ct and Incorrect Layouts below show runs with Passive emitters the same layout will work for Active Emitter runs with the addition of the power injector prior to the 1st Qt Active Emitter The same emi...

Page 18: ...here hallway width is less than the emitter spacing used in the open office the space should be either a separate zone or have the DIP switch attenuation applied at the corridor emitters Each corridor...

Page 19: ...of this FW version number Fault status message Hostname MAC address Control IP Address Control Netmask Control MAC Address Media IP Address Media Netmask Media Zone Audio level Qt X Web Interface onl...

Page 20: ...configuration needs to be removed erased This can be accomplished within the web interface or in the Qt X software On certain screens the user can modify the values shown 1 Press the down button to e...

Page 21: ...onfigure audio controls and additional functions that comprise a biamp sound masking system It can be accessed by inputting either the IP address or device name of the controller NOTE You must be on s...

Page 22: ...e supports audio sources Define behaviors of input and outputs Set zone sound masking levels 42dBA SPL to 48dBA SPL using a calibrated sound pressure meter Measure at 4ft 1 2m Adjust masking spectrum...

Page 23: ...rated measurement equipment by the qualified installer COMMISSION THE SYSTEM continued Once sound masking levels are optimized for a space it is always recommended to that they remain consistent indef...

Page 24: ...25 Qt Active Emitters in a single run Emitter Mounting options Universal Bracket AE UB W AE UB B Mount the Qt Active or Passive emitter to a wall or ceiling Beam Bracket AE BB W AE BB B Mount the Qt A...

Page 25: ...all mount bracket from the controller and reserve the M4 screws to attach the rack mount brackets later Figure 20 2 Disconnect the power supply supporting bracket from the wall mount bracket Figure 21...

Page 26: ...roller The brackets and controller are marked with R L Match the bracket to the appropriate side of the controller Figure 23 5 Secure the Qt X device to the rack via the rack ears as shown in Figure 2...

Page 27: ...en the screws so that the controller doesn t move in the brackets A safety cable may be threaded through any of the open holes to prevent movement and or further secure the unit in the ceiling Importa...

Page 28: ...tters Inserting the room control in line with the cable run counts as two emitters on the run thus decreasing the total run count by two emitter devices Two layouts are presented at right Figure 28 1...

Page 29: ...________ Netmask control media __________________ _________________ Location _________________________________________________ Admin Name Password ___________________ _________________ Installation Se...

Page 30: ...page 30 Installation and Operation Guide Qt X Sound Masking System Notes Notes...

Page 31: ...ados por UL 2043 para su instalaci n en un espacio plenum PELIGRO La fuente de alimentaci n CA CC proporcionada con este producto no se ha evaluado seg n UL 2043 y no debe instalarse en un espacio ple...

Page 32: ...complete and accurate at the time of printing However due to ongoing technical advances changes or modifications may have occurred that are not covered in this manual The latest version is available...

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