The telecommunication system Laboratory set offers experiments for fundamental technical concepts on telecommunication. It enables students to acquire a clear experimental view and, further, they will be familiar with the operational aspects of the work in the telecommunication laboratory. Minimum required didactic content: Introduction to the principle of amplitude modulation by measuring AM modulator signals over time Recording the modulation trapezoid for various modulation depths Demodulation of an amplitude modulated signal Introduction to the principle of a diode detector Demonstration of double side-band modulation (DSB) Tuning the modulator to minimise residual carrier Recording signal, phase shift and modulation trapezoid for DSB

Demonstration of single side-band modulation (SSB) Recovery of the original signal from an SSB signal with the help of an integrated double balanced mixer Demonstration of the principle of frequency modulation and demodulation Explanation of the term "instantaneous frequency" for a modulated signal Determination of the maximum frequency deviation in an FM signal Effect of low-frequency amplitude and frequencies on an FM signal Explanation of the modulation index Explanation of the relationship between LF amplitude, LF frequency and phase shift Ratio detector and phase detector (Foster-Seeley) Recovery of a modulated signal by a phase demodulator Introduction to the design and function of Hartley- and Colpitts oscillators Tuning oscillators Introduction to principles of capacitive and inductive feedback Investigation of resonance conditions (self-excitation) by measurement Design and investigation of an AM transmitter Tuning an oscillator and measuring various degrees of modulation Measuring the frequency response of the output voltage of an oscillator Design and investigation of an AM receiver Introduction to the principle of receiver design Tuned radio frequency receivers Superheterodyne receivers Automatic gain control AGC Automatic frequency control AFC Investigation of a phase discriminator by measurement Introduction to the terms signal-to-image ratio (far-off selectivity) with and without pre-selector stage Demonstration and determination of the image frequency in superheterodyne receivers by measurement Investigation of filter curves of high-frequency input stages IF amplifiers by measurement Determination of adjacent-channel selectivity Design of a medium-wave AM single stage superheterodyne receiver with full-range tuning Interactive learning system combining theory and practical exercises : Allows you to conduct at least 100 different interactive courses with the same interface. Interactive content in scorm format, Direct integration into LMS learning platforms such as Moodle is possible Includes at least the following items with the following minimum characteristics:

1x Course AM/FM modulation 1 Experiment card with Colpitts/Hartley oscillator 1 Experiment card with AM modulator/demodulator, AM modulator switchable between AM/DSB, product demodulator and diode detector 1 Experiment card with FM modulator/phase demodulator Storage case 1x Course AM transmitters and receivers 1 Experiment card with AM modulator/demodulator, AM modulator switchable between AM/DSB, product demodulator and diode detector 1 Experiment card with AM receiver and HF input stage 1 Experiment card with AM IF (intermediate frequency-), LF (lowfrequency) amplifier 1 Experiment card with Colpitts-/Hartley-Oscillator Storage case 1x Interface for Interactive blended learning system assembling theory and practical exercises Adjustable analog output, +/-10 V, 0.2 A, DC – 5 MHz, via BNC and 2- mm sockets 4 Analog differential amplifier inputs with 10 MHz band width, safe for voltages up to 100 V, sampling rate 100 megasamples, 9 measuring ranges, memory depth 4 x 8 k x 10 bits, inputs via BNC (2 inputs) or 2- mm sockets (4 inputs) 2 Analog inputs for current measurement, overcurrent-protected up to 5 A, sampling rate 250 kilosamples, 2 measuring ranges, resolution 12 bits, connection via 2-mm sockets Power supply unit (0-10V adjustable DC, function generator, AC, 3- phase, 3x DC adjustable +/-20V) USB and WIFI interface for real time data displaying on integrated virtual instruments on PC (voltmeter, ammeter, oscilloscope 4-channel, vector analysis, spectra analysis, 3-phase power source) 3x Experiment Unit to be connected to the interface; can also be used in a DIN A4 frame All accessories necessary for proper operation must be provided, with at least the following: 1x Measuring accessories (card with measuring shunt, 22 measuring cables 2mm, 10 bridge plugs 2mm/5mm) 1x Interactive multimedia courses Interactive experiment setups with animation Measured values and diagrams can be stored in the experiment instructions per drag and drop Direct link to instruments/measurement and test software from the experiment instructions Includes questions with feedback and evaluation logic for progress monitoring Documents can be printed out for hardcopy of experiment instructions including solutions 1x Standard branded PC with 32'' screen, adapted keyboard, Windows 10 or 11, UPS, spare battery.

Technical Clauses:

• The bidder must present a manufacturers authorization
• Training manual for the items Deliver packages(Demo/lab manual) needed for conducting experiment using these items
• The supplier must provide one week training to 15 trainers