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Archive for 2021

Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

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.   Figure 1: probing IQ signal...
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

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

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 SDS1202X-E Oscilloscope using Kotlin, a free open source c...
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

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

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 reflections. – The X has a slightly larger display (8″)  vs. the XE (7″) – The XE has a faster di...
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

Programming Example: List connected VISA compatible resources using PyVISA

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 comput...
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

SDS FFT performance on low frequency signals

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 harmonic...
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

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

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 name. Download P...
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

Measuring Power Supply Control Loop Response with Bode Plot II

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. When combined wit...
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

Measuring the Modulation Index of an AM Signal using an FFT

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 function (Available on the...
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

Programming Example: SDS Oscilloscope save a copy of a screen image via Python/PyVISA

Here is a brief code example written in Python 3.4 that uses PyVISA to pull a display image (screenshot) from a SIGLENT SDS oscilloscope via USB and save it to a drive on the controlling computer. NOTE: This program saves the picture/display image file to the E: drive, which may or may not exist on the specific computer being used to run the application. Download Python 3.4, connect a SIGLE...
Analysing GSM Radio Protocol with a Siglent SDS2000X Plus Oscilloscope

Power Supply Design: Load Step Response with a SIGLENT DC Electronic Load

Building a power supply that can handle various loads without oscillating can be a challenge. Computational models and computer simulations can help get your design headed in the right direction, but physical testing is essential to proving the performance of your design. One method of quickly determining stability is to use a load step response. In this test, a DC electronic load is used to...

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