Experiment No. 6 Frequency Modulation (FM
... phototransistor. The transmit portion of the link is composed of the LM 566C voltage-to-frequency converter with a triangular output waveform. The center frequency is set to 100 KHz. The LM 566 output is large (1.8 Vppk) and therefore it is attenuated by a factor of 20, and passed by a simple RC fil ...
... phototransistor. The transmit portion of the link is composed of the LM 566C voltage-to-frequency converter with a triangular output waveform. The center frequency is set to 100 KHz. The LM 566 output is large (1.8 Vppk) and therefore it is attenuated by a factor of 20, and passed by a simple RC fil ...
Experiment 6: Frequency Modulation (FM), Generation and Detection
... The transmit portion of the link is composed of the LM 566C voltage-to-frequency converter with a triangular output waveform. The center frequency is set to 100 KHz. The LM 566 output is large (1.8 Vppk) and therefore it is attenuated by a factor of 20, and passed by a simple RC filter to result in ...
... The transmit portion of the link is composed of the LM 566C voltage-to-frequency converter with a triangular output waveform. The center frequency is set to 100 KHz. The LM 566 output is large (1.8 Vppk) and therefore it is attenuated by a factor of 20, and passed by a simple RC filter to result in ...
A SIGE LOW PHASE NOISE PUSH
... This paper describes a monolithically integrated push-push oscillator fabricated in a production-near SiGe:C bipolar technology. The transistors used in this work show a maximum transit frequency f T = 200 GHz and a maximum frequency of oscillation f max = 275 GHz. For the passive circuitry transmis ...
... This paper describes a monolithically integrated push-push oscillator fabricated in a production-near SiGe:C bipolar technology. The transistors used in this work show a maximum transit frequency f T = 200 GHz and a maximum frequency of oscillation f max = 275 GHz. For the passive circuitry transmis ...
Chapter-1 Intro
... subcutaneous body structures, including soft structures like muscles, tendons or neonatals. The principle is based on sending sounds waves (typical range 2 -18 MHz) and measuring the echoes produced by reflection in body structures (any layer or tissue where density changes reflects part of the wave ...
... subcutaneous body structures, including soft structures like muscles, tendons or neonatals. The principle is based on sending sounds waves (typical range 2 -18 MHz) and measuring the echoes produced by reflection in body structures (any layer or tissue where density changes reflects part of the wave ...
Lock-in amplifiers
... Sum and difference freq generated Compare to signal addition -- interference Signal frequency close to reference freq – low freq beat – DC for equal freq sine waves – DC output level depends on relative phase ...
... Sum and difference freq generated Compare to signal addition -- interference Signal frequency close to reference freq – low freq beat – DC for equal freq sine waves – DC output level depends on relative phase ...
Word - ITU
... In the above method, the amplitudes of the two test tones at 2f0 and 3f0 are equal. The peak amplitude of a mixture of two equal amplitude tones, whose frequencies are not related by small whole numbers, is twice the peak amplitude of each individual tone. Thus, to test the circuit to a peak amp ...
... In the above method, the amplitudes of the two test tones at 2f0 and 3f0 are equal. The peak amplitude of a mixture of two equal amplitude tones, whose frequencies are not related by small whole numbers, is twice the peak amplitude of each individual tone. Thus, to test the circuit to a peak amp ...
Episode 123 - Teaching Advanced Physics
... BEWARE: a lot of oscilloscopes have ‘calibration positions’ on their variable y-gain and time base settings. Students will need to be reminded to set these prior to making measurements otherwise they will get systematic errors throughout. ...
... BEWARE: a lot of oscilloscopes have ‘calibration positions’ on their variable y-gain and time base settings. Students will need to be reminded to set these prior to making measurements otherwise they will get systematic errors throughout. ...
- MATEC Web of Conferences
... has high performance to price ratio. With the improvement of automation level, precision of capacitance micrometer is required higher and higher. Generally, capacitance micrometer consists of the capacitance sensor, capacitance/voltage conversion circuit, and modulation and demodulation circuits. Ho ...
... has high performance to price ratio. With the improvement of automation level, precision of capacitance micrometer is required higher and higher. Generally, capacitance micrometer consists of the capacitance sensor, capacitance/voltage conversion circuit, and modulation and demodulation circuits. Ho ...
project 1
... Frequency Modulation (FM). The modulator is needed to be design, construct and test. The use of design and simulation tools such as ORCAD is recommended at early stage of design process. Frequency modulation is a form of angle modulation where the message signal is used to vary the carrier frequency ...
... Frequency Modulation (FM). The modulator is needed to be design, construct and test. The use of design and simulation tools such as ORCAD is recommended at early stage of design process. Frequency modulation is a form of angle modulation where the message signal is used to vary the carrier frequency ...
Questions Pools Element 9
... 42. 9A42 | An operator reports that calls can be made with the HF/MF communications equipment on 2182 kHz, but that greatly reduced power is indicated on all higher frequencies. After verifying that the transmitter functions properly into a dummy load, the antenna tuner of the system could be inves ...
... 42. 9A42 | An operator reports that calls can be made with the HF/MF communications equipment on 2182 kHz, but that greatly reduced power is indicated on all higher frequencies. After verifying that the transmitter functions properly into a dummy load, the antenna tuner of the system could be inves ...
Lect_16
... • Resonance occurs in any system that has a complex conjugate pair of poles; it is the cause of oscillations of stored energy from one form to another. • It allows frequency discrimination in communications networks. Resonance is a condition in an RLC circuit in which the capacitive and inductive re ...
... • Resonance occurs in any system that has a complex conjugate pair of poles; it is the cause of oscillations of stored energy from one form to another. • It allows frequency discrimination in communications networks. Resonance is a condition in an RLC circuit in which the capacitive and inductive re ...
Chapter # 3 Data and Signals
... • Is made of glass or plastic and transmit signals in the form of light. • Light travels in a straight line as long as it is moving through a single uniform substance. If a ray of light traveling through one substance enters another substance of different density , the ray change direction as shown: ...
... • Is made of glass or plastic and transmit signals in the form of light. • Light travels in a straight line as long as it is moving through a single uniform substance. If a ray of light traveling through one substance enters another substance of different density , the ray change direction as shown: ...
Cathode Ray Oscilloscope
... • When electrons hit the screen the phosphor is excited and emits light. • Persistence. How long the display glows. • May need to reduce ambient light for older instruments. ...
... • When electrons hit the screen the phosphor is excited and emits light. • Persistence. How long the display glows. • May need to reduce ambient light for older instruments. ...
Chapter 5 PCM Modulator
... 2. Let J1 short circuit and from the signal input terminal (I/P), input 250 mV amplitude and 500 Hz sine wave frequency. Then by using oscilloscope, observe on the output terminal of lowpass filter (T1), input terminal of audio signal (T2), feedback point of output signal (T3) and output signal term ...
... 2. Let J1 short circuit and from the signal input terminal (I/P), input 250 mV amplitude and 500 Hz sine wave frequency. Then by using oscilloscope, observe on the output terminal of lowpass filter (T1), input terminal of audio signal (T2), feedback point of output signal (T3) and output signal term ...
Experiment #9 Report (and pre-lab)
... 7. Use the above equations to find the frequencies, at which the output voltage is approximately 0.707 times the maximum possible output voltage (i.e., the half-power points). Record these values below. Then use the oscilloscope to determine such cutoff frequencies experimentally by observing the f ...
... 7. Use the above equations to find the frequencies, at which the output voltage is approximately 0.707 times the maximum possible output voltage (i.e., the half-power points). Record these values below. Then use the oscilloscope to determine such cutoff frequencies experimentally by observing the f ...
BANDWIDTH OF PCM SIGNALS
... used? If sin x/x pulse shapes are used? (b) What is the average SNR of the recovered analog signal at the receiving end? 2. A unipolar NRZ line code is converted to a multilevel signal for transmission over a channel. The number of possible values in the multilevel is 32 and the signal consists of ...
... used? If sin x/x pulse shapes are used? (b) What is the average SNR of the recovered analog signal at the receiving end? 2. A unipolar NRZ line code is converted to a multilevel signal for transmission over a channel. The number of possible values in the multilevel is 32 and the signal consists of ...
405-line television system
The 405-line monochrome analogue television broadcasting system was the first fully electronic television system to be used in regular broadcasting.It was introduced with the BBC Television Service in 1936, suspended for the duration of World War II, and remained in operation in the UK until 1985, it was also used between 1961 and 1982 in Ireland as well as from 1957 to 1973 for the Rediffusion Television cable service in Hong Kong.Sometimes called the Marconi-EMI system, it was developed in 1934 by the EMI Research Team led by Sir Isaac Shoenberg. The figure of 405 lines had been chosen following discussions over Sunday lunch at the home of Alan Blumlein. The system was the first broadcast system in Britain to use interlacing, though EMI had been experimenting with a 243 line all-electronic interlaced system since 1933. In the 405 system the scanning lines were broadcast in two complementary fields, 50 times per second, creating 25 frames per second. The actual image was 377 lines high and interlaced, with additional unused lines making the frame up to 405 lines to give the slow circuitry time to prepare for the next frame; in modern terms it would be described as 377i.At the time of its introduction the 405-line system was referred to as ""high definition"", which it was compared to earlier systems, although of lower definition than 625-line and later standards.