Listen Technologies Corporation * 14912 Heritagecrest Way * Bluffdale * Utah 84065-4818 U.S.A.
+1.801.233.8992 * +1.800.330.0891 North America * +1.801.233.8995 Fax
Listen Technologies Corporation All rights reserved 91407 - Created July 14, 2014
Digital Discussion Chairman Unit w/ Fixed Mic 12 in. (30 cm) Page 2
D-Cerno-C
Digital Discussion Chairman Unit w/ Fixed Mic 12 in. (30 cm)
• The chairman unit enables the ability to speak and listen to the meeting via a headphone.
• The unit shall have digital signal processing to be able to provide crystal clear sound reproduction and excellent
intelligibility.
• The gooseneck microphone shall be fixed with a length of 12 in. (30 cm). The red indication ring on the microphone
will illuminate whenever the microphone becomes active. If the unit is in request mode the indication ring will blink.
• The microphone shall be immune for mobile phone interferences.
• To prevent acoustic feedback the loudspeaker shall be muted when the microphone is active.
• To listen to the proceedings the unit will have a 3.5 mm stereo headphone socket. Volume can be adjusted via a
control on top of the unit.
• The unit is controlled via touch sensitive buttons that are flush with no gaps in the housing.
• The unit shall be easy to clean and disinfect. There will be no gaps around the buttons where dirt and bacteria can
accumulate.
• The unit shall have two interchangeable RJ45 connectors to connect to the central unit or the next delegate unit.
These connections will be hidden in the bottom housing of the unit.
• The connections will have no specific in and out port, as the units will detect the flow of the signal automatically.
• The unit shall have the same design and functions as the delegate unit and also have two additional buttons:
• Priority Button
• Short press : Deactivate all active microphones
• Press and hold : Temporary mute all active microphones and auxiliary input.
• There shall be a possibility to activate a chime when the prior button is pressed.
• Next-in-line button
• Grant the floor to the next microphone in the queue. Only available in certain microphone modes.
• The chairman unit will have the following connections, controls and indicators:
• Microphone with led ring indicator
• Microphone on/off button
• Priority button
• Next-in-line button
• Microphone on led bar indicator
• Request LED bar indicator
• Volume control buttons
• 3.5 mm headphone socket
• 2 concealed RJ45 connections
Product Specification: Digital Discussion Chairman Unit w/ Fixed Mic 12 in. (30 cm)
Audio
Frequency Response 25Hz to 15KHz (+/-3dB)
Loudspeaker Diameter 1.75 in. (44 mm)
Loudspeaker Maximum Power 3 W RMS
Headphone Impedance >32 ohm <1k ohm
Quality 16 Bit Digital
Controls
