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Archive for June, 2021

AWG Basics

Posted on: June 18th, 2021 by Doug Lovell
AWG Basics 18/06/2021
Many electronic designs feature the ability to monitor or measure input signals and then perform another task or function based on that input signal. A simple example could be a circuit that looks for an input voltage to exceed a specific amount and triggers another action after it occurs. In such cases, having the ability to configure and deliver a known or simulated signal can be a critical addi...

The basic output waveform and related parameters of the arbitrary waveform generator

Posted on: June 18th, 2021 by Doug Lovell
The basic output waveform and related parameters of the arbitrary waveform generator 18/06/2021
Traditional function generators can output standard waveforms such as sine waves, square waves, and triangle waves. However, in actual test scenarios, in order to simulate the complex conditions of the product in actual use, it is often necessary to artificially create some “irregular” waveforms or add some specific distortion to a waveform. Traditional function generators can no longer meet t...

Generating an Activation Code (Option Code)

Posted on: June 18th, 2021 by Doug Lovell
Generating an Activation Code (Option Code) 18/06/2021
Introduction Many SIGLENT products have options that can be activated by entering a special activation code into the front panel. This note covers how to generate the activation code.   Setup Contact your Authorised SIGLENT sales office or distribut...

EasyPulse Technology and Its Benefits

Posted on: June 18th, 2021 by Doug Lovell
EasyPulse Technology and Its Benefits 18/06/2021
INTRODUCTION: The majority of modern arbitrary/function waveform generators utilise DDS technology (Direct Digital Synthesis), but there are a few obvious defects using this technology directly. To solve these disadvantages, SIGLENT invented a pulse generating algorithm called EasyPulse technology. In this note, we will describe the basics of DDS and how EasyPulse can help g...

Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

Posted on: June 18th, 2021 by Doug Lovell
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope 18/06/2021
We took a retired Siemens A36 cellphone to learn the capabilities of this new Siglent scope. Available documentation and medium-density PCB of the selected A36 made the signal probing easy to implement. We used TEK P6243 active probes initially for their low capacity loading but changed to passive probes later as monitored signals proved to be quite robust.   ...

Programming Example: Retrieve data from an XE series Oscilloscope using Kotlin

Posted on: June 18th, 2021 by Doug Lovell
Programming Example: Retrieve data from an XE series Oscilloscope using Kotlin 18/06/2021
The SDS series of oscilloscopes all feature remote programming and data collection capabilities. They can be integrated easily into many automated test environments to ease the setup and data acquisition during testing. One of our helpful customers developed a nice programming example designed to set up and retrieve data from a SIGLENT ...

Comparison / Differences between the SDS1000X and SDS1000X-E oscilloscope families

Posted on: June 18th, 2021 by Doug Lovell
Comparison / Differences between the SDS1000X and SDS1000X-E oscilloscope families 18/06/2021
The short list of differences between the X and the 2 channel XE (SDSs1202XE) is as follows:– X has 50 ohm/ 1 MOhm selectable input impedance. XE only has 1 MOhm fixed. You will need a 50 ohm matching through adapter if you wish to connect to 50 Ohm circuits/minimize ref...

Programming Example: List connected VISA compatible resources using PyVISA

Posted on: June 18th, 2021 by Doug Lovell
Programming Example: List connected VISA compatible resources using PyVISA 18/06/2021
PyVISA is a software library that enables Python applications to communicate with resources (typically instruments) connected to a controlling computer using different buses, including: GPIB, RS-232, LAN, and USB. This example scans and lists the available resources. It requires PyVISA to be installed (see the PyVISA documentation for more information) *** #Example that scans a compute...

SDS FFT performance on low frequency signals

Posted on: June 18th, 2021 by Doug Lovell
SDS FFT performance on low frequency signals 18/06/2021
Like many modern oscilloscopes, the SIGLENT SDS series feature FFT math functions that calculate frequency information from the acquired voltage vs. time data. FFT stands for Fast Fourier Transform, and is a common method for determining the frequency content of a time-varying signal. Converting time domain data to the frequency domain makes measuring characteristics like phase noise and harmonics...

Programming Example: SDS Oscilloscope screen image capture using Python over LAN

Posted on: June 18th, 2021 by Doug Lovell
Programming Example: SDS Oscilloscope screen image capture using Python over LAN 18/06/2021
Here is a brief code example written in Python 3.4 that uses a socket to pull a display image (screenshot) from a SIGLENT SDS1000X-E scope via LAN and save it to the local drive of the controlling computer. NOTE: This program saves the picture/display image file in the same directory that the .py file is being run from. It will overwrite any existing file that has the same na...

Measuring Power Supply Control Loop Response with Bode Plot II

Posted on: June 18th, 2021 by Doug Lovell
Measuring Power Supply Control Loop Response with Bode Plot II 18/06/2021
Introduction Stability is one of the most important characteristics in power supply design. Traditionally, stability measurements require expensive frequency response analysers (FRA) which are not always available in a laboratory. SIGLENT has released Bode Plot Ⅱ features to the SIGLENT SDS1104X-E, SDS1204X-E, SDS2000X-E, SDS2000X Plus, and SDS5000X series of oscilloscopes...

Measuring the Modulation Index of an AM Signal using an FFT

Posted on: June 18th, 2021 by Doug Lovell
Measuring the Modulation Index of an AM Signal using an FFT 18/06/2021
Introduction In AM schemes, the modulation index refers to the amplitude ratio of the modulating signal to the carrier signal. With the help of Fast-Fourier-Transforms (FFT), the modulation index can be obtained by measuring the sideband amplitude and the carrier amplitude. In this application note, we are going to show a convenient method of using the new Peaks/Markers functi...

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