Intro to DSP: Sampling. with GNU Radio Jeff Long
|
|
- Eileen Charles
- 6 years ago
- Views:
Transcription
1
2 Intro to DSP: Sampling with GNU Radio Jeff Long
3 ADC SDR Hardware Reconfigurable Logic Front End Analog Bus USB2 USB3 GBE PCI Digital Data Control Analog Signals May include multiplesystem Typical SDR Radio frequency (over the air) Phases (I/Q or Quadrature) Baseband to ADC) (RX) Antennas (input (MIMO) Continuous Real Digital Signals Represent analog Discrete Evenly spaced in time (no two are alike) Travel in groups (DMA, buffers)
4 Start with something simple...
5 Linear motion sawtooth wave Constant speed periodic signal Known start time clock sync
6 Measure Analog (1,0,-1,0,1,0,-1,0,1) Continuous Signal Discreet Values t Δ Tsample Tsignal = 1 / Fsignal Constant Rate Clock (Fsample)
7 Nyquist Rate Fsample > 2 Fsignal MAX MIN Sampling Ratio = Fsample / Fsignal = Tsignal / Tsample
8 Δ t 1x 2x 4x
9
10 2x sampling Time (Phase)ratio Shiftcannot represent phase t 2x Time is information!
11 Start ¼ period early (or late) Can we measure 2 signals with one value? Take advantage of phase different start times.
12 t
13 Fsample > 4 Fsignal I n phase S ignal Q uadrature S = I + jq 'j' means 90 out of phase t
14 RF communication is based on sine waves Sine and Cosine are the same function, shifted by 90 (π/2) Addition? Same function, shifted! sig1 = cos(x) sig2 = sin(x) (sig1 + sig2) * 1/ 2 Same frequency Different phases WHY? Frequency (FFT magnitude) Phase (FFT angle)
15 Adding Sines in the time domain is the same as adding impulses in the frequency domain Display using GNU Radio frequency sink A-major Chord 440 Hz 554 Hz 659 Hz 880 Hz Fsample = 4000 S/s
16 Sample rate = 4000 S/s can represent signal freq < 2000 Hz Hurts the ears 440 Hz 554 Hz 659 Hz 1000 Hz Fsample = 4000 S/s
17 Sample rate = 4000 S/s can represent signal freq < 2000 Hz 3120 Hz tone aliases down to 880 Hz from Second Nyquist Zone = 880 A-major Chord 440 Hz 554 Hz 659 Hz 880 Hz Fsample = 4000 S/s
18 Sine Wave Swept khz 1MS/s Keep 1 in 2 (Decimation) 500kS/s
19 Sine Wave Swept khz 1MS/s Keep 1 in 2 (Decimation) 500kS/s Both signal AND noise will be aliased another reason to filter.
20 Decimator Decimator Anti Aliasing Filter Downsampling = Filtering + Decimation
21 Interpolator Image Reject Filter Upsampling = Interpolation + Filtering
22 Clocking Complications No Clock Processor Audio * Clock Domains GNU Radio does not have its own clock (* exception) Device sources and sinks have clocks Usually different clocks creating clock domains Frequency tolerances Not synced (out of phase) Must pick a clock Usually only one good choice Audio drivers will often resample (ALSA plughw:1,0)
23 Clocking Domains No Clock Processor Audio BAD (with ALSA hw:) Processor and Audio both working off their own clocks Over/underruns, stutter GOOD (with ALSA plughw:) Audio driver does software resampling to match clocks
24 Clocking Complications RTL Clock USRP Clock BAD No good way to sync clocks Will see either OOOOOOOOOO RTL buffer overrun UUUUUUUUUU USRP buffer underrun
25 Clocking Domains BOTH GOOD Only one clock domain Rest of flowgraph will maintain pace
26 Buffers
27 ADC Buffer Block Handling one sample at a time is slow Many blocks require multiple samples Filter history FFT and other block operations SIMD optimization Add buffering, operate on batches of samples Improves performance Increases latency Hides rate mismatches for a short time Buffer
28 Block Block Buffer Block Buffer Buffer Buffers hold the output of each block. GR passes items between blocks, the most common being samples. Multiple blocks can read from the same buffer. Buffer Trivia
29 The Vertical
30 Clipping t Voltage limits Representation limits Analog circuitry Maximum value ADC settings Minimum resolution
31 Headroom Quantization Noise Signal Level Tradeoff t
32 Lower resolution or lower signal = More quantization noise t Can trade off oversampling (averaging) vs resolution 1 bit of resolution ~ 2x oversampling (*) depends on noise characteristics
33 Common GR Types Float32 (float): 23 bits (Complex is 2 floats) Integer8 (byte): 8 bits Integer16 (short): 16 bits Integer32 (int): 32 bits Sample Types One bit for +/-
34 Float/Complex Can scale to any useful range Often scaled to +/- 1.0 Signed Byte/Short/Int Have fixed range +/- 127 / 32K / 2G Short Float Float Short Sink expects Source produces ~ 1.0~ 1.0 Signal File willwill contain be clipped values near Scale 1.0 / or lower zero Scale or lower Sample Type Conversion
35 Sampling Window (Integration Time) t Due to capacitance in ADC Acts as a low-pass filter
36 What is the right rate? Real: > 2 * max signal frequency Quadrature: > 4 * max signal frequency Account for filter rolloff Oversample to reduce noise Oversample to relax filter quality requirements If aliasing is desired, undersampling is OK Hardware May not support arbitrary rates May have better quality rates Performance limits (sampler, bus, computer) Prescribed rates (LTE 10 MHz channel MS/s)
37 Isolate a signal from noise and other signals Perform anti-aliasing or image-rejection (rate change) GR filters can interpolate or decimate FAQ: Why do I get 'OOOOOOOO' with a simple flowgraph? Efficiency in filtering Use the cheapest filter that does the job right Downsample as early as possible, upsample late Use multiple stages for large rate changes 1MS/s, 100 Hz transition taps ~24 GFLOPS (using FIR) Some blocks contain filters, perform rate changes Filters
38 ADC???
Multirate Digital Signal Processing
Multirate Digital Signal Processing Contents 1) What is multirate DSP? 2) Downsampling and Decimation 3) Upsampling and Interpolation 4) FIR filters 5) IIR filters a) Direct form filter b) Cascaded form
More informationResearch Results in Mixed Signal IC Design
Research Results in Mixed Signal IC Design Jiren Yuan, Professor Department of Electroscience Lund University, Lund, Sweden J. Yuan, Dept. of Electroscience, Lund University 1 Work packages in project
More informationData Converter Overview: DACs and ADCs. Dr. Paul Hasler and Dr. Philip Allen
Data Converter Overview: DACs and ADCs Dr. Paul Hasler and Dr. Philip Allen The need for Data Converters ANALOG SIGNAL (Speech, Images, Sensors, Radar, etc.) PRE-PROCESSING (Filtering and analog to digital
More informationCalibrate, Characterize and Emulate Systems Using RFXpress in AWG Series
Calibrate, Characterize and Emulate Systems Using RFXpress in AWG Series Introduction System designers and device manufacturers so long have been using one set of instruments for creating digitally modulated
More informationHigh Performance Real-Time Software Asynchronous Sample Rate Converter Kernel
Audio Engineering Society Convention Paper Presented at the 120th Convention 2006 May 20 23 Paris, France This convention paper has been reproduced from the author's advance manuscript, without editing,
More informationDDC and DUC Filters in SDR platforms
Conference on Advances in Communication and Control Systems 2013 (CAC2S 2013) DDC and DUC Filters in SDR platforms RAVI KISHORE KODALI Department of E and C E, National Institute of Technology, Warangal,
More informationInternational Journal of Engineering Research-Online A Peer Reviewed International Journal
RESEARCH ARTICLE ISSN: 2321-7758 VLSI IMPLEMENTATION OF SERIES INTEGRATOR COMPOSITE FILTERS FOR SIGNAL PROCESSING MURALI KRISHNA BATHULA Research scholar, ECE Department, UCEK, JNTU Kakinada ABSTRACT The
More informationAdaptive Resampling - Transforming From the Time to the Angle Domain
Adaptive Resampling - Transforming From the Time to the Angle Domain Jason R. Blough, Ph.D. Assistant Professor Mechanical Engineering-Engineering Mechanics Department Michigan Technological University
More informationSensor Development for the imote2 Smart Sensor Platform
Sensor Development for the imote2 Smart Sensor Platform March 7, 2008 2008 Introduction Aging infrastructure requires cost effective and timely inspection and maintenance practices The condition of a structure
More informationDigital Front End (DFE) Training. DFE Overview
Digital Front End (DFE) Training DFE Overview 1 Agenda High speed Data Converter Systems Overview DFE High level Overview DFE Functional Block Diagrams DFE Features DFE System Use Cases DFE Configuration
More informationDigital Signal. Continuous. Continuous. amplitude. amplitude. Discrete-time Signal. Analog Signal. Discrete. Continuous. time. time.
Discrete amplitude Continuous amplitude Continuous amplitude Digital Signal Analog Signal Discrete-time Signal Continuous time Discrete time Digital Signal Discrete time 1 Digital Signal contd. Analog
More informationni.com Digital Signal Processing for Every Application
Digital Signal Processing for Every Application Digital Signal Processing is Everywhere High-Volume Image Processing Production Test Structural Sound Health and Vibration Monitoring RF WiMAX, and Microwave
More informationNanoGiant Oscilloscope/Function-Generator Program. Getting Started
Getting Started Page 1 of 17 NanoGiant Oscilloscope/Function-Generator Program Getting Started This NanoGiant Oscilloscope program gives you a small impression of the capabilities of the NanoGiant multi-purpose
More informationProfessor Laurence S. Dooley. School of Computing and Communications Milton Keynes, UK
Professor Laurence S. Dooley School of Computing and Communications Milton Keynes, UK The Song of the Talking Wire 1904 Henry Farny painting Communications It s an analogue world Our world is continuous
More informationPolitecnico di Torino HIGH SPEED AND HIGH PRECISION ANALOG TO DIGITAL CONVERTER. Professor : Del Corso Mahshid Hooshmand ID Student Number:
Politecnico di Torino HIGH SPEED AND HIGH PRECISION ANALOG TO DIGITAL CONVERTER Professor : Del Corso Mahshid Hooshmand ID Student Number: 181517 13/06/2013 Introduction Overview.....2 Applications of
More informationECE438 - Laboratory 4: Sampling and Reconstruction of Continuous-Time Signals
Purdue University: ECE438 - Digital Signal Processing with Applications 1 ECE438 - Laboratory 4: Sampling and Reconstruction of Continuous-Time Signals October 6, 2010 1 Introduction It is often desired
More informationUnderstanding Sampling rate vs Data rate. Decimation (DDC) and Interpolation (DUC) Concepts
Understanding Sampling rate vs Data rate. Decimation (DDC) and Interpolation (DUC) Concepts TIPL 4701 Presented by Jim Seton Prepared by Jim Seton 1 Table of Contents Input Data Rates Why lower data rates
More informationAmplification. Most common signal conditioning
1. Labview basics virtual instruments, data flow, palettes 2. Structures for, while, case,... editing techniques 3. Controls&Indicators arrays, clusters, charts, graphs 4. Additional lecture State machines,
More informationGetting Started with the LabVIEW Sound and Vibration Toolkit
1 Getting Started with the LabVIEW Sound and Vibration Toolkit This tutorial is designed to introduce you to some of the sound and vibration analysis capabilities in the industry-leading software tool
More informationNON-UNIFORM KERNEL SAMPLING IN AUDIO SIGNAL RESAMPLER
NON-UNIFORM KERNEL SAMPLING IN AUDIO SIGNAL RESAMPLER Grzegorz Kraszewski Białystok Technical University, Electrical Engineering Faculty, ul. Wiejska 45D, 15-351 Białystok, Poland, e-mail: krashan@teleinfo.pb.bialystok.pl
More informationModule 8 : Numerical Relaying I : Fundamentals
Module 8 : Numerical Relaying I : Fundamentals Lecture 28 : Sampling Theorem Objectives In this lecture, you will review the following concepts from signal processing: Role of DSP in relaying. Sampling
More informationDesign and VLSI Implementation of Oversampling Sigma Delta Digital to Analog Convertor Used For Hearing Aid Application
Page48 Design and VLSI Implementation of Oversampling Sigma Delta Digital to Analog Convertor Used For Hearing Aid Application ABSTRACT: Anusheya M* & Selvi S** *PG scholar, Department of Electronics and
More informationDigitizing and Sampling
F Digitizing and Sampling Introduction................................................................. 152 Preface to the Series.......................................................... 153 Under-Sampling.............................................................
More informationDPD80 Visible Datasheet
Data Sheet v1.3 Datasheet Resolved Inc. www.resolvedinstruments.com info@resolvedinstruments.com 217 Resolved Inc. All rights reserved. General Description The DPD8 is a low noise digital photodetector
More informationDac3 White Paper. These Dac3 goals where to be achieved through the application and use of optimum solutions for:
Dac3 White Paper Design Goal The design goal for the Dac3 was to set a new standard for digital audio playback components through the application of technical advances in Digital to Analog Conversion devices
More informationDPD80 Infrared Datasheet
Data Sheet v1.4 DPD8 Infrared DPD8 Infrared Datasheet Resolved Inc. www.resolvedinstruments.com info@resolvedinstruments.com 217 Resolved Inc. All rights reserved. DPD8 Infrared General Description The
More information4 MHz Lock-In Amplifier
4 MHz Lock-In Amplifier SR865A 4 MHz dual phase lock-in amplifier SR865A 4 MHz Lock-In Amplifier 1 mhz to 4 MHz frequency range Low-noise current and voltage inputs Touchscreen data display - large numeric
More informationSpectrum Analyser Basics
Hands-On Learning Spectrum Analyser Basics Peter D. Hiscocks Syscomp Electronic Design Limited Email: phiscock@ee.ryerson.ca June 28, 2014 Introduction Figure 1: GUI Startup Screen In a previous exercise,
More information1732 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 45, NO. 9, SEPTEMBER 2010
1732 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 45, NO. 9, SEPTEMBER 2010 Discrete-Time Mixing Receiver Architecture for RF-Sampling Software-Defined Radio Zhiyu Ru, Member, IEEE, Eric A. M. Klumperink,
More informationChapter 6: Real-Time Image Formation
Chapter 6: Real-Time Image Formation digital transmit beamformer DAC high voltage amplifier keyboard system control beamformer control T/R switch array body display B, M, Doppler image processing digital
More informationDesign & Simulation of 128x Interpolator Filter
Design & Simulation of 128x Interpolator Filter Rahul Sinha 1, Sonika 2 1 Dept. of Electronics & Telecommunication, CSIT, DURG, CG, INDIA rsinha.vlsieng@gmail.com 2 Dept. of Information Technology, CSIT,
More information10:15-11 am Digital signal processing
1 10:15-11 am Digital signal processing Data Conversion & Sampling Sampled Data Systems Data Converters Analog to Digital converters (A/D ) Digital to Analog converters (D/A) with Zero Order Hold Signal
More informationProblem Set #1 Problem Set Due: Friday, April 12
1 EE102B Pring 2018-19 Signal Processing and Linear Systems II Pauly Problem Set #1 Problem Set Due: Friday, April 12 In the following problems, assume that δ T (t) = δ(t nt ) n = is an infinite array
More informationB I O E N / Biological Signals & Data Acquisition
B I O E N 4 6 8 / 5 6 8 Lectures 1-2 Analog to Conversion Binary numbers Biological Signals & Data Acquisition In order to extract the information that may be crucial to understand a particular biological
More informationSuverna Sengar 1, Partha Pratim Bhattacharya 2
ISSN : 225-321 Vol. 2 Issue 2, Feb.212, pp.222-228 Performance Evaluation of Cascaded Integrator-Comb (CIC) Filter Suverna Sengar 1, Partha Pratim Bhattacharya 2 Department of Electronics and Communication
More informationAnalog to Digital Conversion
Analog to Digital Conversion What the heck is analog to digital conversion? Why do we care? Analog to Digital Conversion What the heck is analog to digital conversion? Why do we care? A means to convert
More informationRF Record & Playback MATTHIAS CHARRIOT APPLICATION ENGINEER
RF Record & Playback MATTHIAS CHARRIOT APPLICATION ENGINEER Introduction Recording RF Signals WHAT DO WE USE TO RECORD THE RF? Where do we start? Swept spectrum analyzer Real-time spectrum analyzer Oscilloscope
More informationOPTIMIZED DIGITAL FILTER ARCHITECTURES FOR MULTI-STANDARD RF TRANSCEIVERS
OPTIMIZED DIGITAL FILTER ARCHITECTURES FOR MULTI-STANDARD RF TRANSCEIVERS 1 R.LATHA, 2 Dr.P.T.VANATHI 1 Department of Electronics &Communication Engineering, Christ University-Faculty of Engineering, Bangalore-560
More informationTechniques for Extending Real-Time Oscilloscope Bandwidth
Techniques for Extending Real-Time Oscilloscope Bandwidth Over the past decade, data communication rates have increased by a factor well over 10X. Data rates that were once 1Gb/sec and below are now routinely
More information2 MHz Lock-In Amplifier
2 MHz Lock-In Amplifier SR865 2 MHz dual phase lock-in amplifier SR865 2 MHz Lock-In Amplifier 1 mhz to 2 MHz frequency range Dual reference mode Low-noise current and voltage inputs Touchscreen data display
More informationConverters: Analogue to Digital
Converters: Analogue to Digital Presented by: Dr. Walid Ghoneim References: Process Control Instrumentation Technology, Curtis Johnson Op Amps Design, Operation and Troubleshooting. David Terrell 1 - ADC
More informationIntroduction to Data Conversion and Processing
Introduction to Data Conversion and Processing The proliferation of digital computing and signal processing in electronic systems is often described as "the world is becoming more digital every day." Compared
More informationGALILEO Timing Receiver
GALILEO Timing Receiver The Space Technology GALILEO Timing Receiver is a triple carrier single channel high tracking performances Navigation receiver, specialized for Time and Frequency transfer application.
More informationDigital Signal Processing Laboratory 7: IIR Notch Filters Using the TMS320C6711
Digital Signal Processing Laboratory 7: IIR Notch Filters Using the TMS320C6711 Thursday, 4 November 2010 Objective: To implement a simple filter using a digital signal processing microprocessor using
More informationMeeting Embedded Design Challenges with Mixed Signal Oscilloscopes
Meeting Embedded Design Challenges with Mixed Signal Oscilloscopes Introduction Embedded design and especially design work utilizing low speed serial signaling is one of the fastest growing areas of digital
More informationTHE APPLICATION OF SIGMA DELTA D/A CONVERTER IN THE SIMPLE TESTING DUAL CHANNEL DDS GENERATOR
THE APPLICATION OF SIGMA DELTA D/A CONVERTER IN THE SIMPLE TESTING DUAL CHANNEL DDS GENERATOR J. Fischer Faculty o Electrical Engineering Czech Technical University, Prague, Czech Republic Abstract: This
More informationEfficient implementation of a spectrum scanner on a software-defined radio platform
Efficient implementation of a spectrum scanner on a software-defined radio platform François Quitin, Riccardo Pace Université libre de Bruxelles (ULB), Belgium 1 Context and objectives Regulators need
More informationMajor Differences Between the DT9847 Series Modules
DT9847 Series Dynamic Signal Analyzer for USB With Low THD and Wide Dynamic Range The DT9847 Series are high-accuracy, dynamic signal acquisition modules designed for sound and vibration applications.
More informationMultirate Signal Processing: Graphical Representation & Comparison of Decimation & Interpolation Identities using MATLAB
International Journal of Electronics and Communication Engineering. ISSN 0974-2166 Volume 4, Number 4 (2011), pp. 443-452 International Research Publication House http://www.irphouse.com Multirate Signal
More informationDigital Representation
Chapter three c0003 Digital Representation CHAPTER OUTLINE Antialiasing...12 Sampling...12 Quantization...13 Binary Values...13 A-D... 14 D-A...15 Bit Reduction...15 Lossless Packing...16 Lower f s and
More informationZONE PLATE SIGNALS 525 Lines Standard M/NTSC
Application Note ZONE PLATE SIGNALS 525 Lines Standard M/NTSC Products: CCVS+COMPONENT GENERATOR CCVS GENERATOR SAF SFF 7BM23_0E ZONE PLATE SIGNALS 525 lines M/NTSC Back in the early days of television
More informationThe Effect of Time-Domain Interpolation on Response Spectral Calculations. David M. Boore
The Effect of Time-Domain Interpolation on Response Spectral Calculations David M. Boore This note confirms Norm Abrahamson s finding that the straight line interpolation between sampled points used in
More informationLinear Time Invariant (LTI) Systems
Linear Time Invariant (LTI) Systems Superposition Sound waves add in the air without interacting. Multiple paths in a room from source sum at your ear, only changing change phase and magnitude of particular
More informationUSB-SA124B Spectrum Analyzer User Manual
USB-SA124B Spectrum Analyzer User Manual Signal Hound USB-SA124B User Manual 2017, Signal Hound 35707 NE 86 th Ave La Center, WA 98629 USA Phone (360) 263-5006 Fax (360) 263-5007 This information is being
More informationEECS 373 Design of Microprocessor-Based Systems
EECS 373 Design of Microprocessor-Based Systems A day of Misc. Topics Mark Brehob University of Michigan Lecture 12: Finish up Analog and Digital converters Finish design rules Quick discussion of MMIO
More informationAnalog Input & Output
EEL 4744C: Microprocessor Applications Lecture 10 Part 1 Analog Input & Output Dr. Tao Li 1 Read Assignment M&M: Chapter 11 Dr. Tao Li 2 To process continuous signals as functions of time Advantages free
More informationAR SWORD Digital Receiver EXciter (DREX)
Typical Applications Applied Radar, Inc. Radar Pulse-Doppler processing General purpose waveform generation and collection Multi-channel digital beamforming Military applications SIGINT/ELINT MIMO and
More informationSupplementary Course Notes: Continuous vs. Discrete (Analog vs. Digital) Representation of Information
Supplementary Course Notes: Continuous vs. Discrete (Analog vs. Digital) Representation of Information Introduction to Engineering in Medicine and Biology ECEN 1001 Richard Mihran In the first supplementary
More informationChapter 14 D-A and A-D Conversion
Chapter 14 D-A and A-D Conversion In Chapter 12, we looked at how digital data can be carried over an analog telephone connection. We now want to discuss the opposite how analog signals can be carried
More informationExperiment # 5. Pulse Code Modulation
ECE 416 Fall 2002 Experiment # 5 Pulse Code Modulation 1 Purpose The purpose of this experiment is to introduce Pulse Code Modulation (PCM) by approaching this technique from two individual fronts: sampling
More informationAn Introduction to the Spectral Dynamics Rotating Machinery Analysis (RMA) package For PUMA and COUGAR
An Introduction to the Spectral Dynamics Rotating Machinery Analysis (RMA) package For PUMA and COUGAR Introduction: The RMA package is a PC-based system which operates with PUMA and COUGAR hardware to
More informationSound and Vibration Data Acquisition
NI 9233, NI 9234 NEW! 24-bit resolution 102 db dynamic range 4 simultaneous analog inputs ±5 V input range Antialiasing filters TEDS read/write Recommended Software LabVIEW Sound and Vibration Toolkit
More informationGENERAL PURPOSE Signal generators. R&S SMBV100A vector signal generator allrounder and specialist at the same time
R&S SMBV100A vector signal generator allrounder and specialist at the same time 36 The attractively priced R&S SMBV100A offers performance that was previously available only in considerably more expensive
More informationExperiment 2: Sampling and Quantization
ECE431, Experiment 2, 2016 Communications Lab, University of Toronto Experiment 2: Sampling and Quantization Bruno Korst - bkf@comm.utoronto.ca Abstract In this experiment, you will see the effects caused
More informationMCP Signal Extraction and Timing Studies. Kurtis Nishimura University of Hawaii LAPPD Collaboration Meeting June 11, 2010
MCP Signal Extraction and Timing Studies Kurtis Nishimura University of Hawaii LAPPD Collaboration Meeting June 11, 2010 Outline Studying algorithms to process pulses from MCP devices. With the goal of
More informationAnalog Arts SA985 SA975 SA935 SA915 Product Specifications [1]
www.analogarts.com Analog Arts SA985 SA975 SA935 SA915 Product Specifications [1] 1. These models consist of an oscilloscope, a spectrum analyzer, a data recorder, and a frequency & phase meter. Oscilloscope/
More informationPCM ENCODING PREPARATION... 2 PCM the PCM ENCODER module... 4
PCM ENCODING PREPARATION... 2 PCM... 2 PCM encoding... 2 the PCM ENCODER module... 4 front panel features... 4 the TIMS PCM time frame... 5 pre-calculations... 5 EXPERIMENT... 5 patching up... 6 quantizing
More informationQuadruple, 2:1, Mux Amplifiers for Standard-Definition and VGA Signals
9-4457; Rev ; 2/9 Quadruple, 2:, Mux Amplifiers for General Description The MAX954/MAX9542 are quadruple-channel, 2: video mux amplifiers with input sync tip clamps. These devices select between two video
More informationPEP-II longitudinal feedback and the low groupdelay. Dmitry Teytelman
PEP-II longitudinal feedback and the low groupdelay woofer Dmitry Teytelman 1 Outline I. PEP-II longitudinal feedback and the woofer channel II. Low group-delay woofer topology III. Why do we need a separate
More information2 MHz Lock-In Amplifier
2 MHz Lock-In Amplifier SR865 2 MHz dual phase lock-in amplifier SR865 2 MHz Lock-In Amplifier 1 mhz to 2 MHz frequency range Low-noise current and voltage inputs Touchscreen data display - large numeric
More informationHow advances in digitizer technologies improve measurement accuracy
How advances in digitizer technologies improve measurement accuracy Impacts of oscilloscope signal integrity Oscilloscopes Page 2 By choosing an oscilloscope with superior signal integrity you get the
More informationFFT Laboratory Experiments for the HP Series Oscilloscopes and HP 54657A/54658A Measurement Storage Modules
FFT Laboratory Experiments for the HP 54600 Series Oscilloscopes and HP 54657A/54658A Measurement Storage Modules By: Michael W. Thompson, PhD. EE Dept. of Electrical Engineering Colorado State University
More informationDSP in Communications and Signal Processing
Overview DSP in Communications and Signal Processing Dr. Kandeepan Sithamparanathan Wireless Signal Processing Group, National ICT Australia Introduction to digital signal processing Introduction to digital
More informationVLA-VLBA Interference Memo No. 15
VLA-VLBA Interference Memo No. 15 Performance Characterization of the 1-18 GHz Ailtech-Stoddart NM67-CCI7 Receiver System used as part of the Continuous RFI Environmental Monitoring Station (EMS) at the
More informationData Converters and DSPs Getting Closer to Sensors
Data Converters and DSPs Getting Closer to Sensors As the data converters used in military applications must operate faster and at greater resolution, the digital domain is moving closer to the antenna/sensor
More informationTempo Estimation and Manipulation
Hanchel Cheng Sevy Harris I. Introduction Tempo Estimation and Manipulation This project was inspired by the idea of a smart conducting baton which could change the sound of audio in real time using gestures,
More informationDT9857E. Key Features: Dynamic Signal Analyzer for Sound and Vibration Analysis Expandable to 64 Channels
DT9857E Dynamic Signal Analyzer for Sound and Vibration Analysis Expandable to 64 Channels The DT9857E is a high accuracy dynamic signal acquisition module for noise, vibration, and acoustic measurements
More informationScanning A/D Converters, Waveform Digitizers, and Oscilloscopes
Scanning A/D Converters, Waveform Digitizers, and Oscilloscopes Scanning A/Ds, waveform digitizers and oscilloscopes all digitize analog signals. In all three instrument types, the purpose is to capture
More informationmmwave Radar Sensor Auto Radar Apps Webinar: Vehicle Occupancy Detection
mmwave Radar Sensor Auto Radar Apps Webinar: Vehicle Occupancy Detection Please note, this webinar is being recorded and will be made available to the public. Audio Dial-in info: Phone #: 1-972-995-7777
More informationAN 623: Using the DSP Builder Advanced Blockset to Implement Resampling Filters
AN 623: Using the DSP Builder Advanced Blockset to Implement Resampling Filters AN-623-1.0 Application Note Prerequisites This application note discusses various design techniques for implementing resampling
More informationDT8837. High Performance Ethernet Instrument Module for Sound & Vibration. Overview. Key Features
DT8837 High Performance Ethernet Instrument Module for Sound & Vibration Overview The DT8837 is a high-accuracy, multi-channel module that is ideal for sound and vibration measurements. All the I/O channels
More informationHello and welcome to this presentation of the STM32L4 Analog-to-Digital Converter block. It will cover the main features of this block, which is used
Hello and welcome to this presentation of the STM32L4 Analog-to-Digital Converter block. It will cover the main features of this block, which is used to convert the external analog voltage-like sensor
More informationVXI RF Measurement Analyzer
VXI RF Measurement Analyzer Mike Gooding ARGOSystems, Inc. A subsidiary of the Boeing Company 324 N. Mary Ave, Sunnyvale, CA 94088-3452 Phone (408) 524-1796 Fax (408) 524-2026 E-Mail: Michael.J.Gooding@Boeing.com
More informationDithering in Analog-to-digital Conversion
Application Note 1. Introduction 2. What is Dither High-speed ADCs today offer higher dynamic performances and every effort is made to push these state-of-the art performances through design improvements
More informationLOW POWER DIGITAL EQUALIZATION FOR HIGH SPEED SERDES. Masum Hossain University of Alberta
LOW POWER DIGITAL EQUALIZATION FOR HIGH SPEED SERDES Masum Hossain University of Alberta 0 Outline Why ADC-Based receiver? Challenges in ADC-based receiver ADC-DSP based Receiver Reducing impact of Quantization
More informationFeedback Control of SPS E-Cloud/TMCI Instabilities
Feedback Control of SPS E-Cloud/TMCI Instabilities C. H. Rivetta 1 LARP Ecloud Contributors: A. Bullitt 1, J. D. Fox 1, T. Mastorides 1, G. Ndabashimiye 1, M. Pivi 1, O. Turgut 1, W. Hofle 2, B. Savant
More informationExperiment 13 Sampling and reconstruction
Experiment 13 Sampling and reconstruction Preliminary discussion So far, the experiments in this manual have concentrated on communications systems that transmit analog signals. However, digital transmission
More informationControlling adaptive resampling
Controlling adaptive resampling Fons ADRIAENSEN, Casa della Musica, Pzle. San Francesco 1, 43000 Parma (PR), Italy, fons@linuxaudio.org Abstract Combining audio components that use incoherent sample clocks
More informationMulticore Design Considerations
Multicore Design Considerations Multicore: The Forefront of Computing Technology We re not going to have faster processors. Instead, making software run faster in the future will mean using parallel programming
More informationCombating Closed Eyes Design & Measurement of Pre-Emphasis and Equalization for Lossy Channels
Combating Closed Eyes Design & Measurement of Pre-Emphasis and Equalization for Lossy Channels Why Test the Receiver? Serial Data communications standards have always specified both the transmitter and
More informationCombating Closed Eyes Design & Measurement of Pre-Emphasis and Equalization for Lossy Channels
Combating Closed Eyes Design & Measurement of Pre-Emphasis and Equalization for Lossy Channels Why Test the Receiver? Serial Data communications standards have always specified both the transmitter and
More informationA review on the design and improvement techniques of comb filters
A review on the design and improvement techniques of comb filters Naina Kathuria Naina Kathuria, M. Tech Student Electronics &Communication, JMIT, Radaur ABSTRACT Comb filters are basically the decimation
More informationDT9837 Series. High Performance, USB Powered Modules for Sound & Vibration Analysis. Key Features:
DT9837 Series High Performance, Powered Modules for Sound & Vibration Analysis The DT9837 Series high accuracy dynamic signal acquisition modules are ideal for portable noise, vibration, and acoustic measurements.
More informationAnalog Arts SA985 SA975 SA935 SA915 Product Specifications
Analog Arts SA985 SA975 SA935 SA915 Product Specifications Oscilloscope/ Spectrum Analyzer/ Data Recorder Model SA985 SA975 SA935 SA915 Oscilloscope (Typical by Design) Bandwidth (Max at probe tip) [1]
More informationPS User Guide Series Seismic-Data Display
PS User Guide Series 2015 Seismic-Data Display Prepared By Choon B. Park, Ph.D. January 2015 Table of Contents Page 1. File 2 2. Data 2 2.1 Resample 3 3. Edit 4 3.1 Export Data 4 3.2 Cut/Append Records
More informationAND8383/D. Introduction to Audio Processing Using the WOLA Filterbank Coprocessor APPLICATION NOTE
Introduction to Audio Processing Using the WOLA Filterbank Coprocessor APPLICATION NOTE This application note is applicable to: Toccata Plus, BelaSigna 200, Orela 4500 Series INTRODUCTION The Toccata Plus,
More informationIN DEPTH INFORMATION - CONTENTS
IN DEPTH INFORMATION - CONTENTS In Depth Information ADA 24/96 Sample Rate Conversion filters....2 Clock, synchronization and digital interface design of DB-8.........................4 TC Electronic, Sindalsvej
More informationRealizing Waveform Characteristics up to a Digitizer s Full Bandwidth Increasing the effective sampling rate when measuring repetitive signals
Realizing Waveform Characteristics up to a Digitizer s Full Bandwidth Increasing the effective sampling rate when measuring repetitive signals By Jean Dassonville Agilent Technologies Introduction The
More informationSound and Vibration Data Acquisition
NI PXI-449x, NI PXIe-449x NEW! 16 simultaneous analog inputs 24-bit resolution 204.8 ks/s maximum sampling rate 114 db dynamic range +10, +20, and +30 db gains ±0.316, 1, 3.16, and 10 V input ranges Antialiasing
More informationWideband Downconverters With Signatec 14-Bit Digitizers
Product Information Sheet Wideband Downconverters With Signatec 14-Bit Digitizers FEATURES 100 khz 27 GHz Frequency Coverage 3 Standard Selectable IF Bandwidths 100 MHz, 40 MHz, 10 MHz 3 Optional Selectable
More information