Jitter spectrum measurements with a digital oscilloscope
February 21, 2022
Clockworks Signal Processing released an application note that measures jitter using a SIGLENT XE series of oscilloscopes. The basic idea is simple enough – measure the clock edges and see if they are all exactly evenly spaced or if they change (jitter) over time. A non-uniform clock fed to an ADC or DAC will produce … Continued
Comparison/Differences in SDS1000X-U and SDS1000X-E oscilloscope models
December 8, 2021
The four-channel SIGLENT SDS1000X-E models (SDS1104X-E and SDS1204X-E models) and SDS1000X-U oscilloscopes are based on very similar digital platforms and share many features. They do have some differences that could be important for you to understand prior to selecting the proper product for your application. Here are the major differences (Note XE is used to … Continued
Datalogging with the four-channel SDS1000X-E oscilloscope models
August 30, 2021
Datalogging Numerous test and measurement applications require data acquisition over a long time duration. Instead of milliseconds of measurement time, you may need tens of minutes or even hours of data. Normally, a data acquisition system is used for this type of application. But this may require developing software and troubleshooting code. SIGLENT has added … Continued
Power Supply Design: Load Step Response with a SIGLENT DC Electronic Load
April 3, 2020
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. … Continued
Programming Example: SDS Oscilloscope save a copy of a screen image via Python/PyVISA
February 26, 2020
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 … Continued
Programming Example: Identification String (*IDN?) return with LabVIEW 2018
December 16, 2019
This LabVIEW VI (version 2018) provides a simple platform to begin creating LabVIEW programs. You can download the VI here: VISA_IDN.ZIP In this example, the user can: Select the connected instruments from the VISA Resource List drop down menu: NOTE: USB devices will automatically appear. For LAN connections, you will need to add the device. … Continued
Measuring the Modulation Index of an AM Signal using an FFT
June 13, 2019
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 … Continued
Measuring Power Supply Control Loop Response with Bode Plot II
May 24, 2019
Introduction Stability is one of the most important characteristics in power supply design. Traditionally, stability measurements require expensive frequency response analyzers (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, SDS5000X, and SDS6000A series of oscilloscopes. When combined with a … Continued
Programming Example: SDS Oscilloscope screen image capture using Python over LAN
March 8, 2019
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 … Continued
Comparison / Differences between the SDS1000X and SDS1000X-E oscilloscope families
November 26, 2018
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 … Continued