First, the system description

The system is a wireless conference system working in the UHF band. It is fully digitally controlled and has multiple speaking modes. It can be connected with the video host to realize the video tracking function. The power supply of the attendant unit can be either a normal battery or a rechargeable lithium battery, which is convenient and environmentally friendly. The system is easy to operate, free of engineering installation, economical and practical, and is the first choice for conference engineering.

1.1 Features

It adopts FM frequency modulation to realize sound signal transmission, high fidelity, high signal to noise ratio and no sound delay. Use the unique new anti-howling single-point high-sensitivity condenser microphone to make the conference sound almost perfect.

Both the audio channel and the control channel are transmitted wirelessly, no need to lay cables, and the signal coverage can be moved freely in the park, which makes the venue layout convenient and flexible.

The data communication algorithm independently developed for the conference application enables the system response speed to be unaffected by the number of participants in the signal range. Users can flexibly increase or decrease the attendance unit. The factory default system attendance unit capacity is ≦255 (including 1 chairman).

It has a rotation of 1-2-3-4, a restriction of 1-2-3-4, and the chairman's proprietary multi-session speech mode. The main control unit can externally connect the video host to realize the video tracking function of the conference attendance unit.

It has a rotation of 1-2-3-4, a restriction of 1-2-3-4, and the chairman's proprietary multi-session speech mode. The main control unit can externally connect the video host to realize the video tracking function of the conference attendance unit.

Large screen LCD display. The hierarchical menu design makes the operation simple and convenient. And there are many functions such as power display and undervoltage warning, frequency channel and signal indication.

The main control worker adopts the all-metal structure design, and the main unit is made of engineering plastic material with novel appearance design, built-in antenna, and beautiful appearance.

1.2 main control machine technical indicators:

Power input: DC12V-15V, ≧1A

Power consumption: <7W

Working temperature -10 ° C -40 ° C

Main control unit size (W×H×D): 485mm×100mm (2U, including chassis mat)×355mm

Master weight: 7.2kg

Audio channel

Communication method: UHF wireless mode (one-way)

Number of channels: 5 channels (1 chairman unit path, 4 for unit path)

Frequency range: (the frequency range is available in the range of 500MHz---950MHz)

Demodulation method: FM

Receive sensitivity: -100dBm

Control channel

Communication method: UHF wireless mode (two-way)

Number of channels: 16

Frequency range: 422.4MHz - 438.4MHz

Modulation method: FSK

Receive sensitivity: -100dBm

Radiated power: ≦+6dBm

Frequency deviation: <0.002

Data rate: 100KBPS