Built-in MP3 recording and playback and graphics display u pending patent cache u digital recording acoustic feedback inhibition u meeting control without operator intervention control up to 150 u feed equipment control unit (CU) is the core of CCS Ultro conference system, for power supply system on behalf of the President of the machine and, all of the machine. In addition, the device controls the microphone of the chairman and the representative and provides an audio input and output interface. The basic functions include built-in MP3 recording and playback function, and the control unit of the graphics display (CCS‑ curd-cn) has built-in recording function, which can record the meeting contents into the SD card in digital form. The graphic display can display the recording state, and the attached button can be used to configure the recording state. As an option, the recording is active only when the microphone is activated. To transcribe, the SD card can be removed from the control unit and processed on a 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 representing the machine. When the SD card is almost full and the user needs to replace a new card, the system beeps and the LED indicator flashes. A blank card can be used to replace a full card during a CCS‑ curd-cn recording of pending patents. When the full card is removed, the recording continues to be entered into the recording cache for the pending patent. After inserting the new card into the control unit, the cached recording will be written to the new card and the recording will continue to work normally. This enables seamless recording without losing any audio when changing the SD. Digital acoustic feedback suppression (CCS‑ cud-cn, CCS - curd-cn) can automatically eliminate acoustic feedback (also known as "howling" or "Larsen effect"). This allows the speaker volume to be set high enough without the acoustic feedback risk to achieve better speech clarity. The meeting control unit can operate independently without operator intervention without operator control. You can use the knob on the top panel of the device to select the following five modes: • open mode -- allows you to select one to four simultaneous activated microphones (not including the chairman microphone). • open mode with auto close - allows you to select one to four simultaneous microphones (not including the chairman microphone) that can be activated. If the delegate doesn't speak for 30 seconds, the microphone shuts down automatically. • overlay mode - represents the ability to overwrite someone else's voice tube by simply activating your own microphone. Only one microphone can be activated at a time. • only chairman mode -- only chairman can speak. Even when the chairman was not speaking, the speaker's microphone was not activated. • test mode -- check to see if the system is properly connected. All microphone rings and feed device LED indicators are on, indicating proper connection of the device. Power supply control units for up to 50 feeders have two main outputs for feeder loop connection. With a system cable up to 100 meters (109.3 yards) long, 25 feeders can be connected to the output of each main line. Control up to 150 feeders up to three control units can be combined in a conference system to control up to 150 feeders and power them. In this configuration, a control unit ACTS as the main controller for the entire system. Built-in monitor speakers and headphone jack allow users to monitor the meeting process. Establish a connection between the system and the external device. The following devices can be connected to the CCS Ultro conference system through the control unit: • external wired or wireless microphone -- for guest speaker or listener participation. (note: the external microphone will be silenced when the priority button on the chairman machine is pressed and the system operates in the "chairman only" mode.) , external PA system - process are used to meeting sent to the audience in the same room or between adjacent rooms, tape recorder, record and playback for external meetings and discussions, audio equipment, used to provide a background music, phone coupler - allow remote representative to participate in the meeting by telephone, external audio processing - provide the link interface controls and indicator at the top, the power switch, is used to display graphics display of status information (CCS ‑ CURD - CN), is used to configure and control the five built-in MP3 recorder Three soft key buttons (CCS‑ curd-cn) • speaker volume control to set the output level of the feed device speaker. This control also determines the highest level of headset output for the feed device and control unit. • microphone mode knob switch for setting the number of simultaneous activated microphones, And select the four operation modes (and a test mode) one of them, switch on the LED light is on the back, used in digital acoustic feedback suppression device on/off (CCS ‑ CUD - CN, CCS ‑ CURD - CN), microphone input gain control, external recorder input gain control, insert the connector bypass switch interconnection top, a 3.5 mm (0.14 inch) stereo headphone socket on the back, 1 way ac input, 2 7 round socket, For main input/output loop interconnection, 1 3 XLR plugs, used in the microphone input (via the attached lines of 50 db attenuation is used as input), 1 plug connector to the lotus, for input/output lines, 1 plug connector to the lotus, used in telephone input/output, 1 plug connector to the lotus, is used to insert the input/output, 2 plug connector channel (left/right) to the lotus, For external recorder input/output • USB interface (CCS‑ curd-cn) 1 2-1 CCS‑ cud-cn, CCS ‑ CURD - CN 2 CCS ‑ CURD - CN number attachment component control unit 1 50 dB attenuator user manual 1 power cord specification index of electric power supply voltage from 100 to 240 VAC plus or minus 10% maximum 0.9 A current consumption (100 VAC) and 0.3 (240 VAC) provides A feed device of dc power supply 24 V + / - 1 V limited (current) speaker volume control mute (50 dB attenuation) + 10 Level (per level increase 1.9 dB) device of the limiter threshold level than the speaker/headset, such as high rated level 10 dB gain due to open microphone quantity (NOM) drop low present NOM plus or minus 1 dB total harmonic input rating (85 dB SPL) < 0.5 maximum input (110 dB SPL) < 0.5 sampling frequency (CCS ‑ CURD) record 32 kHz playback, 44.1, 48 kHz bitrate (CCS ‑ CURD) record 64, 96, 128, 192, 256 KBit/SEC replay any bit rate compatible with mp3 ID3V2 tag (CCS ‑ CURD) any memory card capacity is not more than 2 Gb SD card (it is recommended to use the card) the recording ability (CCS ‑ CURD) size bit rate 225 MB 512 MB internal memory card 1 Gb to 2 Gb