128 unit wireless conference system (support Video tracking and center control)
1. System description
This system is a set of wireless conference system working in UHF frequency band, full digital control, with multiple speech modes, with video tracking function.Have center control connect function. Using UHF radio frequency technology, using distance, strong ability to resist dry sorrow. Speech signal without delay. Install extremely handy. Is the preferred meeting engineering installation.
★FM frequency modulation is adopted to realize sound signal transmission with high fidelity, high signal-to-noise ratio and no sound delay.Using a unique new type of anti-howling single pointing high sensitivity capacitive microchip makes the conference sound almost perfect.
★Audio channel and control channel adopt wireless transmission, no cable laying, signal coverage garden can be moved freely, so that the venue layout is convenient and flexible.
★The data communication algorithm independently developed for the conference is applied, so that the system response speed is not affected by the number of guest units within the signal range.Users can flexibly add or subtract guest units within the system capacity.
★Proprietary, chairman of the system is first in first out and two kinds of conference speech patterns, factory Settings to the default maximum number in unit 128, four d unit can be elegate set at the same time, the system speech of number can be set between 1-4 people.
★20 marshalling system host built-in voice communication is adjustable. Every organization has four independent voice circuit work. In case of not the radio frequency (rf), can easily change the system working frequency, avoid the effect of interference.
★The system has the function of changing the working channel of all on-line microphones with one key. There is no need for staff to adjust the working channel of the guest unit one by one.
★The system has the function of closing all the unit power supply with one key. In daily use, there is no need to manually turn off the unit power after the meeting
★ The system host can directly connect to the camera, and the camera site control software provided by the original factory is an all-english interface, which can easily realize the video tracking function of the on-site attendance unit.
★ The seating unit adopts dot matrix hd display.Combined design of independent buttons and hierarchical menu makes installation and debugging simple and convenient.There are many functions such as power display and undervoltage warning, frequency channel and signal indication.
★Ultra-low power consumption, the guest unit is powered by 4pcs high-performance alkaline batteries. It can last 10 hours of speech and 28 hours of standby time；
Working range : 60m (visual range)
Frequency : UHF640－690MHz FM demodulation . Built-in 4 voice circuits
Oscillation Mode: PLL
Sensitivity: When the offset is equal to25KHz input 6dBV，S/N>60dB
Band width: 30MHz
Maximum deviation: ±45KHz
Respond frequency range: 45Hz－18KHz ±1dB
Power input： DC12V-15V，2-3 A (Built-in precision voltage regulator circuit)
consumed power： < 10W
Working temperature: -10℃ -- 45℃
Receiver weight：~5.5 kg
Voice RF antenna：Standard 2pcs of 3meter Magnetic disk type external setting 600-700MHZ antenna
Data control antenna：Standard 1pcs of 3meterMagnetic disk type external setting 433MHZantenna
Working power：DC 6V (4 pcs of AA battery power supply, the continuous working time is long)
working current： Standby status ≦110mA, working status ≦150mA
voice communication： UHF wireless mode （directional）
Frequency range：640MHz --690MHz
Reference speech distance：10cm--30cm
Working temperature : -10℃ -- 45℃
Gooseneck mic length：450mm
5.System data control communication indicators
communication mode：UHFWireless mode (two-way communication)
Frequency range：422.4MHz -- 438.4MHz
modulation system： FSK