Four Channel wireless microphone conference system
Product function
1. It adopts the newly designed EIA international standard metal case and four channel receiver.
2. UHF ultra-high frequency band and four channel dual receiving digital pilot technology are adopted, which has less interference and more reliable transmission than the traditional VHF band;
3. UHF all digital processing technology adopts PLL technology, with 200 selectable channels and free frequency modulation.
4. The built-in frequency automatic scanning function of the wireless receiver can quickly search and lock the undisturbed frequency in the working state; Automatically select the most ideal working channel.
5. Four external omni-directional high gain antennas are adopted to enhance the dual frequency performance, ensure the stable output of the signal and prevent the phenomenon of frequency and sound interruption.
6. The panel adopts LCD display window to display various functions and data at a glance, and replaces the traditional complex key operation with easy-to-operate electronic volume knob.
7. The front shuttle knob is designed to replace the traditional complex keys and cooperate with LCD two-color LCD screen, so the operation is fast and simple;
8. Original and efficient audio circuit to restore real sound, high fidelity voice, exquisite sound quality and not easy to scream.
9. One click infrared automatic frequency matching function, you can adjust the frequency with one click, which is more convenient to operate.
10. The receiving distance (in open environment) is about 50-100m. The specific distance depends on the actual use environment
11. USB charging function: use the built-in low-power lithium battery to realize any type-C charging function It can last up to 10 hours,
12. Built in effective filtering sponge to effectively filter noise.
13. It is equipped with intelligent charger and multiple intelligent protection. Each interface is equipped with intelligent chip to ensure that unexpected faults such as data line short circuit occur during charging, and the power output will be automatically switched without affecting the use of other ports.
14. Each set of machine supports four transmitters to be used at the same time, with options: handheld, gooseneck, array gun, headset and collar clip to deal with the required occasions.
15. With the antenna amplifier system, it can realize the full coverage of wireless signals in the venue.
16. It can be widely used in conferences, speeches, teaching and other occasions.
performance index
[receiver]
Chassis specification: EIA standard IU;
Number of channel groups: four channels
Oscillation mode: PLL phase locking frequency synthesis;
Frequency stability: ± 0.005%, PLL phase-locked loop frequency control;
Carrier frequency band: 641-690.85mhz
Receiving sensitivity: -98dbm
Receiving method: superheterodyne
Effective working distance: About 70m
Selectable channels: 50 * 4 = 200
Channel interval: 250kHz
T.H.D: < 0.8%
Service distance: 100m (outdoor environment)
Operating temperature: - 10 ~ 40 ℃
Bandwidth: 50MHz
Maximum offset s / N: ＞ 108db
Comprehensive t.h.d.: ＜ 0.4% @ lkhz
Frequency response: 65Hz ~ 18khz ± 3dB
Audio output: 1000mV (@ 1kHz, ± 25kHz frequency offset)
Antenna interface: BNC (50 Ω)
Output interface: independent true balance output X2, 6.35mm mixed output x1
Power consumption: DC12V * 330mA
Weight: 4.3kg
Size: 421x43x206mm
[transmitter]
[conference seat]
Carrier frequency band: 641-690.85mhz
Transmitting power: 10dBm
Modulation mode: FM
Selectable channels: 50 * 4 = 200
Channel interval: 250kHz
Frequency stability: + 10ppm
Maximum modulation system: + 45khz
Antenna: built in spiral type
Power consumption: about 120mA (@ 3V AA * 2)
Length of conference microphone: 420mm for gooseneck type / 200mm for gun type
