XK-GP1 Analog communication training kit for school lab, electronic training             

1.Product overview

XK-GP1 Analog communication trainer constitutes by signal source module, frequency meter module and 8 pcs training modules. It adopts modular structure, each experiment module can be put flexibly. Each module can realize the fixed functional experiment, and by combining several modules, can realize the system experiment, such as the AM modulation and demodulation, FM modulation and demodulation. The design of the modules is not only focus on measuring the experiment input signal and output signal, but also lay emphasis on measuring and analyzing the experiment intermediate process and intermediate variables. It is suitable for the college students to carry out the high frequency electronic circuit learning and experiment.

2.Technical parameters

2.1 Size: 500×340×165 mm,weight:4Kg

2.2 Power supply: single-phase power supply, AC220V, frequency 50/60Hz, power≤10VA

2.3 With main power indication, power supply indication, earth leakage protection and over current protection.

2.4 Working environment: temperature-10℃~+40℃

3.Signal source technical index

3.1 DC 3.3V voltage source, capacity 0.5A

3.2 DC 5V voltage source, capacity 1A

3.3 DC±12V voltage source, capacity 1A

4.Product main composition

4.1 Frequency meter(module 6):

Frequency measuring range: 5Hz~2400MHz

Input level range: 100mVrms~2Vrms

Measuring error: ≤±20ppm( frequency lower end≤±1Hz)

Input impedance: 1MΩ/10pF

4.2 High frequency signal source(module 1):

Output frequency range: 400KHz~45MHz(continuous and adjustable)(minimum step 1KHZ)

Frequency stability: 10E-4

Output waveform: sine wave, harmonic wave≤-30dBc

Output amplitude: 1mVp-p~1Vp-p(continuous and adjustable)

Output impedance: 50Ω

4.3 Low frequency signal source(module 1):

Output frequency range: 200Hz~10KHz(Continuous and adjustable, square wave frequency can reach 250KHz)

Frequency stability:10E-4

Output waveform: sine wave, square wave, triangle wave

Output amplitude: 10mVp-p~5Vp-p(continuous and adjustable)

Output impedance: 100Ω

4.4 Experiment module and circuit composition is as follows:

   1)Module 2: small signal frequency-selection and amplification module

Includes single tuning amplifying circuit, capacitance coupling double tuning amplifying circuit, integrated frequency-selecting and amplifying circuit, automatic gain control(AGC)and other four kinds circuit.

   2)Module 3: sine wave oscillation and VCO module

Includes LC oscillation circuit, quartz crystal oscillation circuit, voltage controlled LC oscillation circuit, variode frequency regulation circuit and other four kinds circuit.

3)Module 4: amplitude modulation and demodulation module

Includes analog multiplier amplitude modulation(AM, DSB, SSB) circuit, diode peak value envelop detecting circuit, transistor small signal envelop detection circuit, analog multiplier synchronous detection circuit and other four kinds circuit.

   4)Module 5:FM discrimination module 1

Includes orthogonal frequency discrimination(product type phase discrimination)circuit, phase-locked frequency discrimination circuit, basic phase-locked loop and other three kinds circuit.

5)Module 7: frequency mixing and frequency conversion module

Include diode double balanced frequency mixing circuit, analog multiplier frequency mixing circuit

6)Module 8: high frequency power amplifying module

Includes non-linear C class power amplifying circuit, linear wideband power amplifying circuit, integrated linear wideband power amplifying circuit, collector amplitude modulation circuit and other four kinds circuit.

   7)Module 9: Radio module

Includes transistor frequency conversion, AM radio ,FM radio

8)Module 10:comprehensive module

Includes loudspeaker and music film amplifying circuit, audio power amplifier circuit, antenna and half-duplex circuit, frequency divider circuit and other four kinds circuit.

5.Product main characteristics

1)Adopts modular design, the users can select the modules according to their requirement, thus can not only save money ,but also convenient for upgrading in future

2)Each module is adopted full-closed type structure, and each modules are all protected by protective cover, the upper cover is a transparent shell, which is not only convenient for students observing and operation, but also greatly improved the product reliability and prolong the service life of the product.

3)The product integrates many kinds of necessary instruments for the high frequency circuit design and adjusting, with these instruments, the students can observe the experiment phenomenon and when adjusting the circuit, this instruments can make them more completely and effectively understand the experiment.

   4)Each module of the experiment box has better systematism, the 8 modules can combine to 5 kinds typical system

   (1)Intermediate wave amplitude modulation transmitter(525KHz~1605KHz)

(2)Superheterodyne intermediate wave amplitude modulation receiver(525KHz~1605KHz,Intermediate frequency 465KHz)

(3)Half-duplex frequency regulation wireless walkie-talkie (10MHz-15MHz, intermediate frequency 4.5MHz, signal channel interval 200KHz)

(4)Phase-locked frequency synthesizer(frequency step 40KHz-4MhZ, changeable)

(5)Superheterodyne FM radio(88MHz~108MHz,intermediate frequency 10.7MHz)

5)It has very rich experiment content, the unit experiments contain most of the knowledge points of the high frequency electronic circuit courses, and with rich and certain complexity comprehensive experiment

6)The electronic board adopts SMD process to made, with good high frequency characteristics and reliable performance.

7)The circuit principle diagram or block diagram of each module are directly screen printing on the surface of the module, which is convenient for students to understand experiment and circuit principle

8)In order to facilitate the students to understand the FM superheterodyne radio principle, the system adopts open type superheterodyne framework, the students can build their own circuit through several modules, to realize FM radio’s function, rather than through monolithic integration IC to realize the FM radio.

6. Experiment content

1)    Small signal tuning(single, double tuning)amplifier experiment(module 2)

2)    Integration frequency-selecting amplifier experiment(module 2)

3)    Diode double balance mixer experiment( module 7)

4)    Analog multiplier mixing experiment(module 7)

5)    Three-point type sine wave oscillator( LC crystal)experiment (module 3)

6)    Crystal oscillator and VCO(voltage controlled oscillator) experiment(module 3)

7)    Non-linear C class power amplifier experiment(module 8)

8)Linear wideband power amplifier experiment( module 8)

9)Collector amplitude modulation experiment(module 8)

10)Analog multiplier amplitude modulation(AM,DSB,SSB)experiment ( module 4)

11)Envelope detection and synchronous detection experiment(module 4)

12)Variode frequency regulation experiment (module 3)

13)Orthogonal frequency discrimination and phase-locked frequency discrimination experiment (module 5)

14)Analog phase-locked loop experiment (module 5)

15)Automatic gain control(AGC) experiment(module 2)

16)Intermediate wave amplitude modulation transmitter assembly and adjusting experiment (module 4,8,10)

17)Superheterodyne intermediate wave amplitude modulation receiver assembly and adjusting experiment(module 2,4,9,10)

18)Half-duplex frequency modulation wireless walkie-talkie assembly and adjusting experiment(module 2,3,5,7,8,10)

19)Superheterodyne FM radio system experiment( module 2,5,9,10)

 Contact :   Ms. Sally Zhao

                     Skype: xksally

                     Tel: 86-531-88771298

                      Shandong Xingke Intelligent Technology Co., Ltd.

                    ADD:4th Floor, No. 786 Xinluo Street, Gaoxin Zone,Jinan,Shandong,China.

                    Post code: 250101

                    Website: :810/

                                  http://sdxk.en.china.cn/