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Signal Conditioning and Data Acquisition SystemAliasing occurs when a signal is sampled: (i) After amplification (ii) At twice its frequency (iii) Below the required sampling rate (iv) With a low-pass filter20262mPrinciples of Communication Engineering The minimum sampling frequency required to avoid aliasing for a signal with a maximum frequency of 8 kHz is: (i) 8 kHz (ii) 12 kHz (iii) 16 kHz (iv) 20 kHz20242mPrinciples of Communication Engineering If a Delta Modulation system has step size of 0.1V and a sampling rate of 10 kHz, determine the maximum input signal frequency without slope overload distortion.20247mSignal Conditioning and Data Acquisition SystemA DAQ system samples 4 channels simultaneously at 25 kS/s per channel. Each sample is 12 bits. The microcontroller writes data to an SD card via SPI at 12 Mbps. The SD card uses 512-byte sectors and write operations must be in whole sectors. The MCU packs samples channel-wise into frames and writes continuously. (i) Compute the raw data rate in Mbps and the required sustained write throughput in MB/s (account for packing). (ii) Design a framing strategy: pack samples into 512-byte sectors with minimal wasted space—compute how many samples per sector and how many sectors per second must be written.20257m
PreviousAliasing occurs when a signal is sampled: (i) After amplification (ii) At twice its frequency (iii) Below the required sampling rate (iv) With a low-pass filterNextWhich interface generally uses two signal lines, SDA and SCL? (i) UART (ii) USB (iii) I2C (iv) SPI
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