Built in MP3 recording and playback function and graphic

 display u pending patent recording buffer u digital acoustic feedback suppression u conference control without operator intervention u control of up to 150 feeding equipment control unit (Cu) is the core of CCS Ultro conference system, which can supply power to all the watch machines and chairman machines in the system. In addition, the device also controls the microphone of the chairman machine and the representative machine, and provides audio input and output interfaces. The basic function is built-in MP3 recording and playback function, and the control unit of graphic display screen (CCS ￣ curd-cn) has built-in recording function, which can record the conference content into SD card in digital form. The graphical display shows the status of the recording, and the accompanying buttons can be used to configure the recording status. As an option, recording is active only when the microphone is active. In order to transcribe, the SD card can be taken out of the control unit and processed on the PC; the recording can also be retrieved by connecting the PC to the USB interface of the control unit. The recording can be played back on the monitor speaker or the speaker of the representative machine. When the SD card is almost full and the user needs to replace a new card, the system will beep and the LED will flash. During the recording period of CCS ￣ curd-cn, a blank card can be used to replace the full card. When the full card is removed, the recording will continue to be recorded in the patent pending recording cache. After the new card is inserted into the control unit, the cached recording will be written into the new card and the recording will continue to work normally. This enables seamless recording without losing any audio when replacing the SD. Digital acoustic feedback suppression (CCS ￣ cud-cn, CCS ￣ curd-cn) digital acoustic feedback suppression function can automatically eliminate acoustic feedback (also known as "howling" or "Larsen effect"). This allows the speaker volume to be turned high enough without the risk of acoustic feedback for better speech clarity. The control unit can run independently without operator's intervention. The following five modes can be selected using the knobs on the top of the unit: · open mode – allows selection of one to four microphones that can be activated simultaneously (excluding the chairman microphone). Open mode with auto off function – allows selection of one to four microphones that can be activated simultaneously (excluding the chairman microphone). If the delegate does not speak within 30 seconds, the microphone will turn off automatically. · coverage mode – it means that you just need to activate your own microphone to cover someone else's microphone. Only one microphone can be activated at a time. (Note: in overlay mode, delegates cannot override the chairman's microphone) · chairman only mode - only the chairman can speak. Even when the chairman does not speak, the delegate's microphone cannot be activated. · test mode – check that the system is properly connected. All microphone light rings and feed device LED lights are on, indicating that the device is correctly connected. The control unit supplies up to 50 feeders with two trunk outputs for loop connection of feeders. With a system cable up to 100 meters (109.3 yards), 25 feeders can be connected to each trunk output. Control up to 150 feeders. Up to three control units can be combined in a conference system to control and power up to 150 feeders. In this configuration, a control unit acts as the main controller of the whole system. Built in monitoring speaker, built-in monitoring speaker and headphone jack allow users to monitor the meeting process. Establish the connection between the system and external devices. The following devices can be connected to the CCS Ultro conference system through the control unit: · external wired or wireless microphone - for guest speakers or audience participation. (Note: when the priority button on the chairman is pressed and the system is operated in "chairman only" mode, the external microphone will be muted.) · external PA system - used to transfer conference process to the audience in the same room or adjacent room · tape recorder - used for external recording and playback of meeting and discussion content · audio device - for providing background music · telephone coupler - allowing remote representatives to participate in the conference by telephone · external audio processing - providing plug-in connection interface Control and indicator light top power switch graphic display screen for status information (CCS ￣ curd-cn) · five soft key buttons (CCS ￣ curd-cn) for configuring and controlling the built-in MP3 recorder, speaker volume control, which is used to set the output level of the feed unit speaker. This control also determines the highest level of headphone output of the feed device and control unit. ? microphone mode knob switch to set the number of microphones activated at the same time and select one of the four operation modes (and one test mode) · turn on the back of LED indicator light for digital acoustic feedback suppression device on / off (CCS ￣ cud-cn, CCS ￣ curd-cn) · microphone input gain adjustment external recorder input gain adjustment plug in connector bypass switch interconnect top part 1 3.5 mm (0.14 inch) stereo headphone socket back side 1 AC input 2 7-pole circular socket for trunk I / O loop interconnection 1 x 3-pole XLR Socket for microphone input (can be used as line input via the attached 50dB attenuator) · 1 pair lotus connector for line I / O * 1 pair lotus connector for telephone I / O

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