Archive for June, 2021

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

Posted on: June 18th, 2021 by Doug Lovell
Programming Example: SDS Oscilloscope save a copy of a screen image via Python/PyVISA 18/06/2021
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...

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

Posted on: June 18th, 2021 by Doug Lovell
Power Supply Design: Load Step Response with a SIGLENT DC Electronic Load 18/06/2021
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...

Creating an arbitrary IQ Waveform using MatLAB and UltraIQ

Posted on: June 17th, 2021 by Doug Lovell
Creating an arbitrary IQ Waveform using MatLAB and UltraIQ 17/06/2021
Introduction The DSG3000 (DSG3000B) Series RF signal source (Figure 1) is designed for RF engineering and signal development and test up to 6 GHz. The instrument is also capable of a number of modulation formats. One of the more advanced capabilities is IQ modulation that is enable...

Precompliance: Susceptibility testing

Posted on: June 17th, 2021 by Doug Lovell
Precompliance: Susceptibility testing 17/06/2021
EMC Precompliance Testing: Immunity/Susceptibility Solution: Products that contain electronics can be sensitive to radio frequency (RF) interference. Devices that experience RF interference can be prone to improper or failed operations. Products that suffer problems when exposed to RF interference are said to be susceptible to interference while products that do not exhibit is...

VNA Measurements Application Note

Posted on: June 17th, 2021 by Doug Lovell
VNA Measurements Application Note 17/06/2021
Basic measurements with a Vector Network Analyser In our wireless world the need of RF component testing is one of a key factors to bring a product to market. Devices are getting smaller and are containing more and more complex components. It is a must to have knowledge of complex impedance (or admittance) and reflection / transmission parameters to bring the most optimum fun...

Real-Time vs. Swept Spectrum Analysers

Posted on: June 17th, 2021 by Doug Lovell
Real-Time vs. Swept Spectrum Analysers 17/06/2021
Real-Time Spectrum Analyser vs Spectrum Analyser Today the RF industry has to face more and more the open question, how to transport the data from my test device (DUT) to different receiver spots (like to transmit data into World Wide Web). For IoT applications the most common way is, to use wireless transmission of data via common standards like Bluetooth, Wi-Fi or Zigbee. A more complex tes...

IoT Antenna Debugging

Posted on: June 17th, 2021 by Doug Lovell
IoT Antenna Debugging 17/06/2021
Wireless Communication and Function The internet of Things (IoT) is one of the fastest growing areas of technology today. In this increasing competitive field, the greatest challenge facing IoT device manufacturers is determining how to create the smallest devices possible without sacrificing performance in terms of range or power. For IoT de...

FM signal transmission and demodulation demo

Posted on: June 17th, 2021 by Doug Lovell
FM signal transmission and demodulation demo 17/06/2021
Solution: This application note is designed to show FM data transmission and modulation using some common test instruments. An FM transmission consists of a wave who's frequency is modulated, or changed, with respect to an input signal. If the input signal frequency changes, so does the carrier frequency. The modulating signal affects the FM deviation. The total deviation is a function of th...

How to measure a filter using a DSA-815-TG Spectrum Analyser

Posted on: June 17th, 2021 by Doug Lovell
How to measure a filter using a DSA-815-TG Spectrum Analyser 17/06/2021
Solution: This document provides step-by-step instructions on using the Rigol DSA800 series of Spectrum Analysers to measure the characteristics of an RF Bandpass filter. NOTE: The DSA must have a Tracking Generator to effectively perform the following test. ...

How to measure an amplifier using a DSA-815-TG?

Posted on: June 17th, 2021 by Doug Lovell
How to measure an amplifier using a DSA-815-TG? 17/06/2021
How to measure an RF Amplifier using a DSA800 Series Spectrum Analyser Solution: This document provides step-by-step instructions on using the Rigol DSA800 series of Spectrum Analysers to measure the characteristics of an RF Amplifier. In addition to the DSA-800 Spectrum Analyser, y...

Keyless Entry System ASK/FSK Analysis

Posted on: June 17th, 2021 by Doug Lovell
Keyless Entry System ASK/FSK Analysis 17/06/2021
RIGOL Technologies extended the RF test system of DSA800 spectrum analyser with additional tests for passive key less entry systems. RIGOL’s test solution is very comfortable to use and much cheaper than other available test systems on the market. Passive keyless entry [PKE] communication is an electron...

EMC Precompliance Testing

Posted on: June 17th, 2021 by Doug Lovell
EMC Precompliance Testing 17/06/2021
Why is Pre-Compliance Testing done? Almost any electronic design slated for commercial use is subject to EMC (Electromagnetic Compatibility) testing. Any company intending to sell these products into a country must ensure that the product is tested versus specifications set forth by the regulatory body of that country. In the USA, the FCC specifies rules on EMC testing. CISPR ...

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