This version is outdated by a newer approved version.
This version (16 May 2018 16:38) is a draft.
Approvals: 0/1The Previously approved version (11 Aug 2017 15:46) is available.
This version (16 May 2018 16:38) is a draft.Approvals: 0/1The Previously approved version (11 Aug 2017 15:46) is available.
This is an old revision of the document!
Table of Contents
Scopy Signal Generator
General Description
The signal generator instrument can be used to generate analog output from the M2K with user configurable parameters. It consists of 3 parts:
- Channel selector - enable/disable channels as well as each channel's control panel.
- Signal Plot - visual representation of the signals
- Control Panel - change signal paramteres
Four types of signals can be generated.
- Constant - DC signal at a user selectable amplitude
- Waveform - AC signal with various customizable parameters
- Buffer - signal is imported from a file
- Math - signal is defined by a mathematical equation
Constant signal only has one parameter which inputs the amplitude of the signal Waveform signal type can be one of the following
- Sine
- Square
- Triangle
- Trapezoidal
- Rising sawtooth
- Falling sawtooth
All signals have amplitude, offset, phase and frequency parameters. Selecting Square wave will also unlock the duty cycle parameter. Selecting trapezoidal waveform will disable the frequency, as this parameter will be computed from the other 4 values in the Timing category (Rise time, High time, Fall time, Low Time)
Buffer signal type takes a file as an input. The supported file types for buffered signals are:
- .bin - 32 bit binary float format
- .wav - Waveform Audio File Format (16 bit integers)
- .csv - Comma separated values
- .mat - MATLAB Mat format
CSV file format supports raw CSVs such as https://gist.github.com/adisuciu/7aa30bc9e545db23a17e86d23ae4f53c, as well as Scopy formatted CSVs such as https://gist.github.com/adisuciu/5abffa8233707c7b95585e80fbb1dde9. This means it is possible to acquire a signal in the oscilloscope and play it back in the signal generator. MAT file format only supports arrays of type real (no complex waveforms)
Math signal type allows generation of a signal that is defined as a math equation. .
On top of all the signals noise can be added. By selecting None, no noise is added to the signal. The rest of the noise types are:
- Uniform
- Gaussian
- Laplacian
- Impulse
Use cases
Create loopback between CH1 and CH2 of the oscilloscope and the signal generator
Run a single channel
Run both channels
Generate square waveform
Generate trapezoidal waveform
Generate waveform from wav file
Generate stairstep waveform
Generate waveform from math function
- Select Math mode and input a function sucha s 2*(cos(6*t)*sin(2*t))
- Monitor oscilloscope
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university/tools/m2k/scopy/siggen.1526481539.txt.gz · Last modified: 16 May 2018 16:38 by Adrian Suciu