MR345E Radio Debugging Training Device Laboratory Equipment Smart Grid Training Equipment Educational Equipment
1. Equipment overview
"SR-type radio debugging training device" provides power and audio and video processing modules, infrared transmitting and receiving modules, 433MHz wireless transceiver modules, radio modules, walkie-talkie modules, TV modules and other typical radio training assessment modules in a modular form, It can complete the debugging, analysis and assessment of a variety of wireless transmission equipment. It can be used as a classroom teaching demonstration, and can also be used as a radio debugger and other corresponding certificate assessments. 2. Equipment parameters
1. Input power Single-phase three-wire system 220V±10%, 50Hz
2. Output power: AC power 220V±10%, 50Hz
AC power supply 7.5V (1A) two sets
Fixed DC power supply +5V (1A), +12V (1A), +35V (1A), -12V (1A)
Adjustable DC power supply: 0～30V (1A)
3. Device capacity ＜1.5KVA
4. Working environment The ambient temperature range is -5～40℃, relative humidity <80% (25℃), altitude <3000 meters
5. Dimensions 1600*700*1800mm (length×width×height)
Three, equipment characteristics
1. Comprehensiveness This device integrates a variety of experimental training projects commonly used in the radio field.
2. Applicability It can meet the teaching experiments of corresponding courses in various schools. The modular structure is convenient to replace, and the depth and breadth can be flexibly adjusted according to needs.
3. Modularity Each experimental module adopts a plug-in board separated structure, with clear tasks for each module and convenient operation and maintenance.
4. Scientificity The test points have clear silk screens and intuitive meanings, and the unique failure points are set to facilitate the use of teaching examinations, certificate assessments, etc.
5. Openness Some modules reserve control interfaces to facilitate the connection with digital equipment.
6. Advancement Considering the development trend of radio, some new digital radio chip solutions have been added to enable students to have sufficient knowledge and understanding of new devices, and guide students to transition from analog devices to digital devices, keeping up with the pace of the times.
four. Modular introduction Training platform
The table body experiment table is made of fireproof profiles, scientific in structure, compact in appearance, and the surface is sprayed with imported Dutch powder, which is wear-resistant, corrosion-resistant, high-temperature resistant, and highly insulated. The aluminum alloy structure of the table body is anodic oxidation treatment, beautiful and atmospheric. The built-in desk cabinets and drawers can be used to place training modules, training supporting equipment, training manuals and other materials. A height adjuster is installed at the bottom of the table body to ensure the levelness and stability of the table top.
The middle part of the platform is the experimental screen. The left side of the experiment screen is the experimental mesh board, which can be hung in the training hanging box; the upper right side is the test instrument placement area, where test instruments (oscilloscope , function signal generator, etc.) can be placed; the lower right side is the laptop, TV placement area.
Power control hanging box
AC220V is introduced into the hanging box through the standard D-type port on the left side of the hanging box , and the K3 terminal is output.
Equipped with "master control switch", "key switch", red "indicator", "STOP" emergency button.
220V AC power supply hanging box
The power box is equipped with three sets of sockets (providing 220V city power), which is convenient for training equipment, testing equipment and other equipment to get power. The 220V AC power supply is introduced from the upper and lower right corners of the " master control box" through the K3 connection line through the upper left and lower left terminals.
Low-voltage power supply a hanging box
The 220V AC power supply is introduced from the upper right and lower right corners of the "AC 220V power supply" through the K3 connection line through the upper left and lower left terminals.
Low-voltage power supply two hanging boxes
The 220V AC power supply is introduced from the upper right corner and the lower right corner of the "low-voltage power supply 1" through the K3 connection line through the upper left and lower left terminals.
Provide +5V1A), +12V (1A), -12V (1A), +35V (1A) DC voltage output. When the power supply of the equipment is normal, the voltage output indicators of each channel are on.
training hanging box
The training hanging box (DL-WXD12 ) is powered by the power box on the top of the platform, and four 0V, +5V, +12V, -12V terminals are connected to a set of 0V, +5V on the “low-voltage power supply 2” power box on the top of the platform +12V, -12V corresponding terminal. Each training box provides 4 pairs of 0V, +5V, +12V, -12V power output, and up to 4 training modules can be placed. No. Name Function Picture
1 Power module With over-current and over-voltage protection.
Overvoltage protection: AC15V input, DC2-15V adjustable output, when the output voltage is greater than the preset voltage (preset voltage 2-10V adjustable), the relay action disconnects the main circuit.
Overcurrent protection: When the adjustable load resistance becomes smaller than the loop current is greater than 2A, the relay acts to disconnect the main loop; when the loop current returns to the normal range, the key switch resets the main loop again.
2 Audio and video input module AUX connector external input audio source, MIC, music box three audio source generation methods, one of which is selected by the dial switch to output, the output audio signal size is adjustable.
The color camera produces a standard analog video signal with a resolution of 640*480 and an adjustable focal length.
3 Audio frequency crossover module Single audio input, dual audio output. The signal size of each output is adjusted by the potentiometer.
4 Active power amplifier module Two-channel sound input , speaker, standard earphone interface two ways to output, the output sound level potentiometer is adjustable.
5 Waveform generation module Generated by the onboard controller,
a rectangular square wave with a duty
cycle of 50% and an amplitude of 0-5V,
with a frequency of (1M/400K/40K/20K/10K/5K
/2.5K/1250/625/312/156Hz).
6 Waveform conversion module Realize the mutual conversion between sine wave, triangle wave and rectangular wave (square wave). Triangular wave, sine wave and square wave with adjustable amplitude, duty cycle and frequency are generated by the ICL8038 chip (choose one output from three).
7 Infrared modulation transmitting and receiving module The general infrared remote control system is composed of two parts: transmitting and receiving, and it uses encoding/decoding special integrated circuit chip to control operation. The transmitting part includes keyboard matrix, code modulation, and LED infrared transmitter. The receiving part includes optical and electrical conversion amplifiers, demodulation and decoding circuits.
8 Wireless transmitter module Using the 433M wireless transmitter module, with the onboard controller, the switch and analog values can be generated through the matrix keyboard (2*2) and potentiometer, and transmitted through the wireless module.
9 Wireless receiving module Using 433M wireless receiving module, with the on-board controller, receiving the signal transmitted by the transmitting module, control the light on and off and the brightness of the light.
10 Walkie-talkie transmitter module Adopt SR_T300 walkie-talkie module and onboard controller to realize fully integrated half-duplex transceiver. Working voltage: 3.3-7.0V; working frequency 2 channels are optional: CH1: 462.125MHZ, CH2: 462.175MHZ. 11 Walkie-talkie receiver module Adopt SR_T300 walkie-talkie module and onboard controller to realize fully integrated half-duplex transceiver. Working voltage: 3.3-7.0V; working frequency 2 channels are optional: CH1: 462.125MHZ, CH2: 462.175MHZ.
12 Wireless module Radio module. Similar to a radio welding set.
13 AV signal modulator module The analog camera and pickup signals are converted into RF signals through modulation, and then transmitted. Two signal outputs are provided here. 1# and 2# signals.
14 AV signal tuning module Convert the received RF signal into an AV signal, and make a tuning selection. Embody the concept of tuning. And, cooperate with the distributor for multiple distribution. Connecting the motor all the way to the AV-to-RF module all the way reflects the modulation concept again. And through the RF module for limited transmission.
15 Analog signal video processing The received RF radio frequency signal is video separated, and the video signal is output.
16 Analog signal audio processing The received RF radio frequency signal is audio separated, and the audio signal is output.
TV set
Scanner (optional)
Used to monitor radio waves in space and listen to radio stations.
Oscilloscope (optional)
Signal source (optional) 5. Experimental project
1. Power experiment
2. Waveform generation/conversion experiment
3. Square wave frequency conversion output experiment
4. Infrared modulation and demodulation experiment
5. Wireless transmission/reception experiment
6. Audio Experiment
7. Power amplifier circuit experiment
8. Radio Experiment
9. Walkie-talkie experiment
10. Audio and video input and output experiment
11. Audio and video modulation and demodulation transmission combination and debugging experiment 6, Configuration list
No. Mudule Order number Qty Mark
1 Training bench 24101 1 Must match
2 Power control hanging box 24102 1 Must match
3 220V AC power supply hanging box 24103 1 Must match
4 Low-voltage power supply a hanging box 24104 1 Must match
5 Low-voltage power supply two hanging boxes 24105 1 Must match
6 WXD12 training hanging box 24106 8 Must match
7 Power module 24107 1 Must match
8 Audio and video input module 24108 1 Must match
9 Audio frequency crossover module 24109 1 Must match
10 Active power amplifier module 24110 1 Must match
11 Waveform generation module 24111 1 Must match
12 Waveform conversion module 24112 1 Must match
13 Infrared modem module 24113 1 Must match
14 Wireless transmitter module 24114 1 Must match
15 Wireless receiving module 24115 1 Must match
16 Radio module 24116 1 Must match
17 Walkie-talkie transmitter module 24117 1 Must match
18 Walkie-talkie receiver module 24118 1 Must match
19 Walkie-talkie receiver module 24119 1 Must match
20 Analog signal video module 24120 1 Must match
21 Analog signal audio module 24121 1 Must match
22 AV signal modulator module 24122 1 Must match
23 TV set 24123 1 Must match
24 Scanner 24124 1 Must match (User-supplied)
25 Oscilloscope 24125 1 Must match (User-supplied)
26 signal source 24126 1 Must match (User-supplied)
