Telephone Trainer
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To study working principle & various faults of Telephone To study practical & theoretical aspects of circuitry To study signals & voltage in different sections
Mobile Phone Trainer
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Gsm Mobile Phone Trainer Kit
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We are offering gsm mobile phone trainer kit developed exactly as per the teaching syllabus and experiment contents, the gsm mobile phone trainer kit fully meets the teaching requirements of courses such as mobile communication or communication’s major in colleges and universities. Manufactured as per the set standards, the gsm mobile phone trainer kit and is designed to save time and expenses in research and experimentation. the experiment kit combines theoretical teaching of mobile communication course, reference gsm standard, according to the protocol, it vividly recreates the basic process of mobile station and base station interaction through simulating a base station, among which it has three-layer protocol of gsm communication. It is used to analyze such processes as mobile phone network access, pick up, dial, ringing, hang up through logic analyzer during the interaction process of experiment kit (base station) and mobile phone in experiment kit. the experiment kit has key technology demonstration and experiment of mobile communication, as well as mobile station access, mobile station call, base station call, power control, double computer network full duplex speech communication system experiment, and etc. In addition, it can observe other working state on access computer interface screen of experiment kit.the experiment kit could realize three kinds of wireless standards, such as gsm900, e-gsm and dcs1800. The three wireless standards could automatically switch and network switch. The experiment kit has its own operation number; therefore there is no problem of charging after mobile phone network access. In addition, users would not be restricted by time and expenses in processing experiments and scientific research. it adopts eight-channel time division multiple access (tdma) communication technology of frequency division duplex (fdd), 270.833kbit/s gaussian minimum shift keying (gmsk) modulation mode and balanced demodulation technology. It could observe experiment waveform and communication data with oscilloscope and logic analyzer. it adopts dsp, fpga and many kinds of advanced information treatment method to design and realize gsm air interface three-layer protocol, which we process independent intellectual property rights. The product filled the blank of gsm testing aspects for the domestic in 2002, and state information department has given operational number of the system: 00101(00101 has the same meaning with china mobile and china unicom) it realizes the control of emission power that could reach better transmission quality under the condition of unnecessary for the maximum emission power, which can reduce emission power and thus reduce interference to other communications and harm to people from radio frequency to the minimum. Therefore it is suitable for users to make experiments and study on the structure of gsm communication system for a long time. it adopts plexiglass buffle for protection. performance parameters ac, dc power supply input : ac 220v±10%output : dc ±12v±10%, +5v±5% clock output frequency output : 13mhz frequency output accuracy: ≦±2hz output stability: ±0.1ppm (0~70℃) radio frequency output power output range : -110dbm~-50dbm spectrum: in accordance with gsm protocol radio frequency input power input range : power level 5~19 (+33dbm~+5dbm)spectrum : in accordance with gsm protocol experiment kit host specification : 53cm×37cm×13cm experiment contents experiment kit structure and man-machine interface experimentorthogonal modulation and demodulation experimentgmsk modulation and demodulation experimentspectrum analysis principle and experimentbasic coding and decoding method experimentchannel coding method experiment in gsm systeminterleave and deinterleave experimentfdd, tdma principle and experimentmobile station network access experimentmobile station call experimentmobile station called experimentmobile station technology index and test experiment
Mobile Phone Trainer Kit
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Mobile Phone Trainer
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Mobile Phone Trainer, Physics Lab Instruments
Mobile Phone Trainer
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Mobile Phone Trainer, C - 410 Bunsen Burner, Autoclave Electric