Experimental Training Equipments-> Advanced Analog Digital Data Communication Trainers

[1]   Click to Enlarge Pulse Code Modulation Transmitter Trainer Introduction:This trainer is a single glass epoxy printed circuit board with legends neatly screen printed in multi colour on the front side and all the components are soldered back side of the PCB to avoid tampering of fixed components like resistors, capacitors, transistors, diodes, and variable components like potentiometers are mounted on the front side of the PCB for making linear measurements. Features 1. Crystal Controlled Clock 2. On-board Sine wave generator (Synchronized) 3. 2 TDM Analog Channels. 4. PCM Transmitter. 5. Fast and Slow modes for real time operation and data flow examination. 6. Error check code options (odd-even parity, Hamming Code). 7. 4 Switched faults allow different Error Check Options. Technical Specifications Crystal Frequency: 12 MHz On Board Generators: 1. Adjustable Amplitude Sine wave generator of 1 & 2KHz freq. (synchronized) 2. Variable Amplitude DC Level (2 Nos) Input Channels: Two Multiplexing: Pulse Code Modulation Sync Signals: Pseudo Random Sync. Code Generator Error Check Code: Off-Odd-Even-Hamming Operating Modes: Fast 16KHz / channel (approx) Slow 68MHz / channel (approx) Test Points: 44 Interconnections: Sockets Power: 230V 10% 50Hz Accessories Included: Manual, set of patch wires. See Enlarge Click to Enlarge TDM-PCM Receiver Trainer This trainer is a single glass epoxy printed circuit board with legends neatly screen printed in multi colour on the front side and all the components are soldered back side of the pcb to avoid tampering of fixed components like resistors, capacitors, transistors, diodes, and variable components like potentiometers are mounted on the front side of the PCB for making linear measurements. Features 1. Input accepts two channel multiplexed data. 2. On board demultiplexed PCM receiver. 3. On board L.P filter. 4. Fast & slow operation and examination of control signal and data on LED. 5. On board PLL for clock regeneration. 6. On board sync code detector. 7. Error check code options. a) Odd or Even parity single bit error detection. b) Hamming code single bit error detection and correction. 8. 4-switched faults allow different error code option. Technical Specifications Input Channels Two time division Multiplexed Serial Input Demodulation Pulse Code Demodulation Clock Regeneration by phase locked loop. Low Low Pass Filter Butter worth 4th order 3.4KHz cut off freq. (2nos) Operating modes Fast - 16 KHz / channel Slow - 68MHz/channel Error Detection (single bit) off-odd & even parity, hamming code Error Correction Hamming code Test Points 56. Interconnections 2mm Sockets Power requirements 230V 10%, 50Hz Accessories Included Manual, Set of patch wires See Enlarge Click to Enlarge Data Formatting & Carrier Modulation Transmitter Trainer Features: 1. On - Board carrier generation circuit (Sine waves synchronized to transmitter data.) 2. Different data conditioning formats NRZ (L), NRZ (M), RZ, Biphase (Manchester), Biphase (MRK, AMI, and RB), differentially encoded dibit pair. 3. FSK, PSK, ASK & QPSK modulation. 4. Variable carrier and modulation off - set. 5. Variable carrier gain. 6. On - Board unipolar to bipolar conversion. 7. On - Board data inverter. Technical Specifications: Data formats NRZ (L), NRZ (M), RZ, AMI, RB, Biphase (Mark) Differentially encoded dibit pair. Carrier modulation FSK, PSK, ASK, QPSK. On - Board Carrier Sine waves synchronized to transmitted data at 1.44 MHz, 960 KHz, (0 - deg. Phase) 960 KHz, (90 deg.phase). Power 230V 10%, 50Hz Dimensions (mm) 457 x 445 x 82 Weight 7Kgs. Accessories included : Manual, Set of patch cords NOTE: Refer circuit diagrams and descriptions provided in the manual. See Enlarge Click to Enlarge Carrier Demodulation and Data Reformatting Receiver Trainer Features: 1. 7 different data reconditioning formats NRZ (M), RZ, AMI, RB Biphase (Manchester), Biphase (Mark), differentially encoded dibit to NRZ data. 2. FSK, PSK, ASK & QPSK Carrier Demodulation. 3. Square wave data output. 4. On-Board Biphase Clock recovers circuit. 5. On-Board data squaring circuit and differential decoder. 6. On-Board Butter worth filters - 4'th order (2nos) Technical Specifications: Input : From Model I8. Output : Data output. Demodulation Options : NRZ (M), RZ, AMI, RB, Biphase (Manchester), Biphase (Mark) differentially encoded dibit pair to NRZ (L) Carrier Demodulation : 1. ASK - Rectifier diode. 2. FSK - PLL detector. 3. PSK- Square loop detector. 4. QPSK -Fourth power loop detector. Biphase Clock Recover : By PLL. Accessories included : Manuals, set of patch cords, line cord. Test point : 51. Power : 230V +/- 10 % 50 Hz Dimension (mm) : 457 x 445 x 82 Weight : 7 Kg (Approx) See Enlarge Click to Enlarge Analog Communication Trainer The Analog communications course provides comprehensive, hands-on instruction in the terminology, principles and applications of analog communications. In this course, students receive hands-on circuit training and acquire skills to measure radio signals with an oscilloscope. Students also learn the functions of oscillators, filters, amplifiers, LC networks, modulators, limiters, mixers, and Detectors in communication circuits. Lab Analog Communication Trainer is a very versatile and completely self-contained laboratory instrument built in regulated power supply with short circuit protection. This trainer consists of the following fundamental logic gates: Topic Coverage: Analog communication concepts Circuit board Familiarization Amplitude Modulation RF power Amplifier Balanced modulator RF stage Mixer, IF filter and Envelope detector Balanced modulator and LSB filter Mixer and RF power amplifier Balanced modulator and LSB filter Mixer and RF power amplifier RF stage, mixer and IF filter Product Detector and Automatic Gain control Frequency and phase Modulation Demodulation (quadrature Detector) PLL circuit and operation FM Detection with a PLL Troubleshooting Basics Troubleshooting Analog communication circuits This Trainer Consists of following Circuit Diagrams Amplitude modulation (AM) Transmitter and single-sideband (SSB) Transmitter Amplitude Modulation (AM) Receiver and single-sideband (SSB) receiver with Automatic gain control Frequency Modulator (FM) (high and low bands) Phase Modulator (PM) Quadrature detector (demodulation) Phase-Locked Loop (PLL) circuit Phase-Locked Loop FM Detector 1. Patching Connections: 4mm. The Terminals are provided for Patching. 2. Power: 230V AC/50Hz. 3. Dimension: 41.5cmsx31.5cms x13.5cms. 4. Weight: 750gms. 5. Accessories: i) Instruction Manual. ii) Set of patch cord. 6. Housing: Housed in a sloping fiber/ cabinet with top lid for protection. Technical Specifications: 1. RF Oscillator: Sine output i. Frequency: 2KHz to 20KHz, 20KHz to 200KHz. ii. Amplitude: (0-10)V variable 2. AF Oscillator: Microphone with built in amplifier is provided. 3. Low pass filter: 2nd order Butter worth low pass filter is provided. 4. Loud speaker: 3" Loudspeaker with build in power amplifier is provided. 5. DC Power supply: +12V / 500mA, 5V / 500mA 6. Mains: 230V AC mains provided. See Enlarge Click to Enlarge MOBILE COMMUNICATION TRAINER Introduction: This trainer is a single glass epoxy printed circuit board with legends neatly screen printed in multi colour on the front side and all the components are soldered back side of the PCB to avoid tampering of fixed components like resistors, capacitors, transistors, diodes, and variable components like potentiometers are mounted on the front side of the PCB for making linear measurements. Objectives: 1. Understanding the principles of digital mobile communication system. 2. MCT Trainer is developed to educate the trainees to understand the basic principles of digital mobile communication system, in steps of theory, design, and practice. Features: 1. Signal waveform analysis is easily done by built-in measurement functions. 2. System block diagram, design and analysis points are displayed in the panel. 3. Test point being analyzed is provided in the trainer. 4. Fault inducing switches are provided with the trainer. Experiments: 1. Working principles of GSM Mobile communication trainer. 2. Study of faults that normally occur. 3. Study of waveforms. Technical Specifications: Power: 230V mains operated Accessories: Charger, GSM Mobile phone are provided Dimensions: 53 cms X 47 cms X 20 cms Weight: 1 Kg (Approx.) See Enlarge Click to Enlarge Advanced Radar Training System Introduction: The LAB Advanced Radar Training System offers Model ARTS realistic classroom training, in radar techniques, enabling instructors and students to study the principles involved in pulse radar systems. The system is designed with low power for safe operation. The system is provided with three targets, which are simultaneously tracked to an operating range of 2 to 10mtrs (approx.). The radar training system detects the targets when they approach or leave the scanned area at different speeds, from selected ranges (cms to kms), and at different azimuth settings (0° -360° ). This Advanced Radar Training system (ARTS) operates over a short range of 2-10 mtrs (approx.), providing instruction and observation of all phases of the radar system operation. This trainer is unlike commercial or military radar systems which do not make effective basic trainers, since they use higher radiated power AC voltages (which are dangerous) and targets that are not within visual range. The Trainer operates on 10.5GHz and uses a Horn antenna system. It consists of a microwave transceiver and a stepper motor. A slow-scan antenna scans the laboratory for targets, which move electronically at different speeds with the help of Stepper motor. The PC software controls the antenna rotation speed. The targets are individually identified on the Plan Position Indicator using LAB-Radar 3.0 Software in PC, with quadrant arcs and range markers in meters or kilometers. The range display is switch-selectable for far-out or close-in viewing. The comprehensive laboratory manual includes the study of radar-type electronic circuits. ARTS consists of: Radar signal processing unit – 1 no. Stepper motor unit – 1no. RF Transceiver – 1no. Function Generator – 1no. LAB-Radar 1.0 Software CD – 1no. Shielded Cables – 1 set. Instruction manual – 1set. Artificial Targets – 1 set. Features: Incorporates Technologically Advanced Integrated Transmitter and Receiver Scans, Calculates, and Displays Range and Azimuth Measurements. Horn Antenna with rotating base. (Stepper motor) Demonstrates and Teaches Moving Target Concepts. LAB-Radar 3.0 Software is provided with the trainer for real time measurement in the PC. High speed Data Acquisition card is provided with the trainer (in-built). Hand Gloves and Shielded cables are provided to avoid ESD. LIST OF EXPERIMENTS THAT CAN BE CONDUCTED ON THE TRAINER: Introduction to the Experimental Radar System. Study of FM Doppler radar System, outputs can be observed in the CRO. Study of Radar Display Methods on computer (PPI Method). Study of Transmitter and Receiver. Study of reflections from artificial targets, outputs can be observed in the CRO. Study of measurement of distance of a stationary target, outputs can be observed in the CRO. Study of measurement of Azimuth angle, velocity of a moving target, outputs can be observed in the CRO. SPECIFICATIONS OF ADVANCED RADAR TRAINING SYSYTEMS EQUIPMENT INCLUDED: RF Source : 10.5GHz. Type : Integrated Transmitter/ Receiver. Band : X – Band. Output Power : 10 milli watts. Tuning : Electronic Tuning 40MHz. Operating Voltage : +8 to +10VDC. Operating Current : 200mA. Normal Sensitivity : -110dBc. HORN ANTENNA: Type : Horn Antenna. Band : X-Band. Bandwidth : 10.5GHz. E-Plane : 70° . H-Plane : 30° . ARTIFICIAL TARGETS: 3 Targets; Aluminium. Wooden. Plastic. Tripod Stand : 1No. Range : 2meters to 10meters. Function Generator (Included) High quality Function generator with digital read out is provided along with the ARTS. See Enlarge Click to Enlarge Advanced Satellite Communication Trainer Introduction: Lab Satellite Receiver Trainer is based on a modern and complete satellite receiver system consists of an external unit including: parabolic antenna, driven positioner, polarizer and LNB converter. This trainer is mounted in a sleek Anodized Aluminium cabinet defining a compact and functional set indicating the Block diagram of satellite Receiver in multicolour. Test points are provided on an easily accessible panel; the fault simulators are also provided in this trainer. The following objectives are explained in this trainer for the students to understand the complete working principles of satellite receiver system. Where it is useful Why it is used Reason of using high frequency for communications via Satellite Parts of dish antenna LNB mounting arrangement Faults due to dish antenna, co-axial cable, LNB Assembling the dish antenna Alignment of dish antenna Receiver circuit description. The block diagram of the Satellite Communication Receiver is printed on the front panel of the trainer. All necessary test points are provided to observe various signals at different stages. Controls like Vision IF, gain control, and volume control are provided on the trainer. Training Program: Direct TV signal broadcasting via satellite:orbital path, geostationary satellites, emitted power, covering map, transmission standard, coding systems. Functional diagram of a reception for TV satellites Components characteristics: parabolic antenna, illuminator, polarizer, LNB converter, motor-driven positioner, indoor unit, and positioner control Mounting and tracking of the parabolic antenna: "Azimuth-Elevation" mounting and "Polar" mounting Motor-driven positioner regulation Mounting and regulation of the circular and linear (horizontal and vertical) polarizer Mounting and tracking of the reception converter Tracking adjustment and memorization of satellite position Characteristics of the signal converted to intermediate frequency Audio/video decoders operation: wave-from analysis Video decoder programming Audio decoder programming Technical Specifications External Unit: Parabolic Antenna: polar mounting, 1.2 to 3.7m diameter(*), base mounted on self-holding structure Low noise converter Polarizer Positioner Cables 50m for IF and control Positioner and polarizer Dimensions: L=parabola diameter, H=1m + parabola ray Indoor unit Digital Satellite Receiver outputs: video, audio, RF Antenna Positioner control Structure: compact box with liftable cover with all the electronic parts, the test points, the fault simulator; and the block diagram of the circuit Fault simulator: various faults insertable by means of switches Test points; various test points mounted on panel and directly connected to the circuits of the equipment Power supply: 230 VAC, 50 Hz MAINS OPERATED. See Enlarge Click to Enlarge ANTENNA SYSTEM TRAINER ? 700MHz INTRODUCTION: LAB Antenna System Trainer is a versatile trainer. Student can understand the basic principles of EM theory and the directivity patterns of various types of antennas. The fundamental principles of radio waves, and the basic operating action and characteristics of different types of antennas can be studied. TOPICS COVERED : Study of VSWR (Voltage Standing Wave Ratio). Study of Impedance. Study of Antenna gain. Study of Directional Antenna. Measurements of Front to Back ratio (FBR) Study of Radiation pattern: plotting of curve - Manual Rotation. Study of Polarisation - Discrimination. SOURCE: 1. RF Signal Generator : 700MHz Range. 2. Isotropic Radiator : 2Nos. 3. Field strength Meter TYPES OF ANTENNAS: (EACH 1-NO) 4. Dipole Antenna 5. Folded Dipole Antenna 6. Yagi Antenna : 3 Element - Folded Dipole Radiator. 7. Yagi Antenna : 5 Element - Folded Dipole Radiator. 8. Yagi Antenna : 5 Element -Simple Dipole. 9. Yagi Antenna : 3Element -Simple Dipole 10. Yagi Antenna : 7 Element. 11. Ground Plane Antenna 12. Hertz Antenna 13. Zeep line Antenna 14. Slot antenna. 15. Loop Antenna. 16. Rhombus Antenna. 17. Phase array l /4. 18. Phase array l /2. 19. Log Periodic Antenna 20. Helical Antenna 21. Parabolic Antenna 22. Combined Collinear Array. See Enlarge [1] Go to Top