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PRO-3500

主要功能:
● 采用UHF超高频段,比传统的VHF频段干扰更少,传输更可靠:
● DPLL数字锁相环多信道频率合成技术,在50MHZ频率范围内,
    以250KHZ信道间隔,提供多达200个信道选择,
    方便多套机器同时使用,轻松避开各类干扰;
● 先进的自动对频技术,即使将发射机与接收机的频率调乱了,  
   只需轻轻一按,发射机就会自动追锁频率并调整一致,使用方便;
● 离档液晶显示屏,使接收机及发射器的工作状态一目了然:
 
Main features: 
● Using UHF ultra-high frequency band, VHF band interference than the 
   less traditional, more reliable transmission
● Multi channel frequency synthesis technology of DPLL digital phase 
   locked loop, in the frequency range of 50MHZ to 250KHZ, the channel 
   spacing, provides up to 200 channel selection, multiple sets of machines 
   and is convenient for use, easy to avoid all kinds of interference;
● Advanced automatic frequency technology, even if the transmitter and 
   the receiver frequency adjustment disorder, only a single click, the 
   transmitter will automatically after the lock frequency and adjust the 
   consistent, easy to use;
● From the file LCD screen, make the receiver and transmitter working state 
   stick out a mile:
 
系统指标 System specifications :
频率范围 Frequency range: 640-690MHz
调制方式 Modulation mode: FM
可调范围 Frequency interval: 50MHz
信道数目 Channels: 200
信道间隔 Channel interval: 250KHz
频率稳定度 Frequency stability:±0.005%
动态范围 Dynamic range:100dB
最大频偏 Max frequency deviation
音频响应 Frequency response: 80Hz-18KHz(±3dB)
综合信噪比 SNR:>105 dB
综合失真 Distortion: ≤0.5%
工作温度 Working temperature: -10℃ ~+40℃
 
接收机指标 Receiver Indicators:
接收机方式Pattern:二次变频超外差 
super heterodyne twice frequency conversion
中频频率 IF-FRE:
第一中频 First :110MHz, second  10.7MHz
无线接口 wireless interface :BNC/50Ω
灵敏度 sensitivity :12dBμV(80DbS/N)
灵敏度调节范围 sensitivity range:12-32 dBμV
杂散抑制 Stray rejection:>75dB
最大输出电平Max output level :+10Dbv
 
发射器指标 Launcher Indicators:
无线程式:佩挂发射器采用1/4波长鞭状天线,
手持麦克风内置螺旋天线
Wireless pattern:The 1/4 transmitter Peigua wave whip 
antenna, handheld microphone built-in spiral antenna
输出功率 Output power:
高功率High power30mW; 低功率Low power 3mW
杂散抑制 Stray rejection:-60dB
供电 Power supply :两节AA电池 2 AA batteries
使用时间 Duration time :
30mW时大于8个小时 >8 hours(30mW),
3mW时大于12小时 >12hours(3mW)

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