中欧体育公司研发推出的PDT专业数字中继台IEC-LE7500A/7600X,符合标准DMR/PDT协议,良好兼容其他符合DMR/PDT协议的终端。支持IP互联模式,可实现大范围的通信覆盖。IEC-LE7500A/7600X优秀的制造品质与强大的通讯能力,将为您带来数字无线通信的卓越体验。
The PDT professional digital repeater IEC-LE7500A/7600X developed and launched by Lielong Company conforms to the standard DMR/PDT protocol and is well compatible with other terminals that conform to the DMR/PDT protocol. It supports IP interconnection mode to achieve a wide range of communication coverage. IEC-LE7500A/7600X's excellent manufacturing quality and powerful communication capabilities will bring you an excellent experience of digital wireless communication.
TDMA是一种基于时间分割的多址技术,通过将时间划分为不同的时隙,实现了多用户在同一频率上进行通信。TDMA的原理包括帧结构、时隙分配、数据传输和同步控制。TDMA广泛应用于手机通信、数字广播和卫星通信等领域,提供了高效的通信解决方案。通过合理的时隙设计和同步控制，TDMA可以实现高效的频谱利用和资源分配。
TDMA is a multiple access technology based on time segmentation, which realizes multi-user communication on the same frequency by dividing time into different time slots. The principles of TDMA include frame structure, time slot allocation, data transmission, and synchronization control. TDMA is widely used in mobile communications, digital broadcasting, satellite communications and other fields, providing efficient communication solutions. With proper slot design and synchronous control, TDMA can achieve efficient spectrum utilization and resource allocation.
PDT(Professional Digital Trunking)标准是具有中国自主知识产权的集群通信标准,采用TDMA(双时隙)多址方式，12.5KHz信道间隔、4FSK调制方式、数据传输速率为9.6Kb/s。在满足基本业务的同时,增加了同播、动态频率资源管理等创新功能。PDT第二阶段标准将着眼于提升数据传输速率,及宽带业务功能的应用。PDT标准以中国公安市场为基础,兼顾县、市、省、国家的不同级别用户需求及网络实际建设需要,既支持低成本单基站系统通信,也能做到高效的大区制覆盖,满足诸如四级联网的全国范围公安应急通信指挥网的建设要求。
The PDT (Professional Digital Trunking) standard is a trunking communication standard with China's independent intellectual property rights, which adopts TDMA (dual time slot) multiple access mode, 12.5KHz channel spacing, 4FSK modulation mode, and data transmission rate of 9.6Kb/s. While satisfying basic services, innovative functions such as simulcasting and dynamic frequency resource management are added. The second phase of the PDT standard will focus on increasing the data transmission rate and the application of broadband service functions. Based on China's public security market, the PDT standard takes into account the needs of different levels of users at the county, city, province and country and the actual construction needs of the network, which not only supports low-cost single-base station system communication, but also achieves efficient regional coverage, and meets the construction requirements of a nationwide public security emergency communication command network such as four-level networking.
支持数字、模拟及数/模混合模式;在混合模式下,具备数/模自适应功能，可自动识别数/模信号。
Supports digital, analog, and digital/analog mixed modes; In hybrid mode, it has a digital/analog adaptive function, which can automatically identify digital/analog signals.
支持中继台IP互联,支持模拟中继台与数字中继台混合组网,实现多个区域的数据和语音通信。
It supports IP interconnection of repeaters, hybrid networking of analog repeaters and digital repeaters, and realizes data and voice communication in multiple regions.
采用了高可靠性的四核处理器，具有高效的运算效率和更快的处理速度，实现传统常规无线通讯系统升级到数字集群无线通讯系统的平滑过渡。
The high-reliability quad-core processor is adopted, which has efficient computing efficiency and faster processing speed, and realizes a smooth transition from the traditional conventional wireless communication system to the digital trunking wireless communication system.
数字集群系统是一种先进的无线对讲技术,通过数字信号传输语音和数据信息,实现多用户之间的即时通讯。相较于传统的模拟对讲系统,数字集群系统具有更高的音质、更大的覆盖范围以及更多的功能扩展性。
The digital trunking system is an advanced wireless intercom technology, which transmits voice and data information through digital signals to achieve instant communication between multiple users. Compared with the traditional analog intercom system, the digital trunking system has higher sound quality, greater coverage and more functional scalability.
| 型号/Model | IEC-7500A |
|---|---|
| 频率范围/Frequency range | UHF1:400-470MHz;UHF2:450-520MHz;UHF3:350-400MHz VHF:136-174MHz; |
| 信道容量/Channel capacity | 1024 |
| 信道间隔/Channel spacing | 12.5KHz/20.0KHz/25.0KHz |
| 输入电压(交流)/Input voltage (AC) | 220V |
| 输入电压(直流)/Input Voltage (DC) | 30.0V士15% |
| 工作循环/Duty cycles | 100% |
| 电流消耗/Current consumption | 待机电流 <0.8A 发射电流 <11A |
| 声码器类型/Vocoder type | AMBE+2™ |
| 频率稳定度/Frequency stability | 士0.5ppm |
| 天线阻抗/Antenna impedance | 50Ω |
| LCD显示屏/LCD display | 220*176像素,262000色2.0英寸，4行 |
| 尺寸(长x宽x高)/Dimensions (LxWxH) | 418x366x88mm |
| 重量/weight | 15KG |
| RF连接/RF connection | Tx (N)、 Rx (N) |
| 工作循环/Duty cycles | 100% |
| 灵敏度（模拟）/Sensitivity (analog) | 0.3μV(12dB SINAD);0.22μV(典型值)(12dB SINAD); 0.4μV(20dB SINAD) |
| 灵敏度（数字）/Sensitivity (numeric) | 0.3uV/BER5% |
| 领道选择性/Selectivity | 65dB@12.5KHz/70dB@20/25KHz |
| 互调/Intermodulation | 75dB@12.5/20/25KHz70dB@12.5/20/25KHz |
| 杂散响应抑制/Spurious response suppression | 80dB@12.5/20/25KHz |
| 交流声与噪声/ AC sound and noise | 40dB@12.5KHz;43dB@20KHz;45dB@25KH |
| 阻塞/clog | 90dB |
| 额定音频输出功率/Rated audio output power | 0.5W |
| 音频失真/Audio distortion | ≦3% |
| 音频响应/Audio response | +1~-3dB |
| 传导发射杂散/Conducted emission spurious | <-57dBm< /td> |
| FM调制/FM modulation | 11K0F3E@12.5KHz;14K0F3E @20KHz;16K0F3E@25KHz11KOF3E@12.5kHz |
| 输出功率/Output power | 5-50W |
| 传导.辐射发射/Conduction. Radiation emissions | -36dBm<1GHz:-30dBm>1GHz |
| 调制限制/Modulation limitations | 士2.5KHz@12.5KHz;+4.0KHz@20KHz;士5.0KHz@25KHz |
| 邻道功率/Adjacent channel power | 60dB@12.5KHz;70dB@20/25KHz |
| FM交流声与噪声/FM AC sound and noise | 40dB@12.5KHz;43dB@20KHz;45dB@25KH |
| 工作温度/Operating temperature | -30°C~+60°C |
| 存储温度/Storage temperature | -40°C~+85°C |
| 防水防尘/Waterproof and dustproof | IP68(IEC-LE7600X)、IP67(IEC-LE7500A) |
