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Application Notes

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Pass your EMC Test First Time

What’s inside: A punchy, practical guide to diagnosing and fixing EMC issues before the test house — with clear distinctions between narrowband vs broadband noise, real-world filtering advice, and PDN best practices. Radiated emissions: classify first, fix fast (narrowband lines vs broadband floor). Grounding & bonding: why filter specs collapse with poor return...

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Syllabus Overview

Summary: A focused three-day training covering EMC & SIPI fundamentals, transmission lines, shielding, filtering, power electronics noise mitigation, and robust digital/analog design practices. Includes demonstrations and an interactive quiz. Day 1 — EMC & SIPI Fundamentals Electromagnetic Compatibility Emissions & Immunities (Susceptibilities) Introd...

EMC PT3 TelonicUK scaled

EMC Application Note – Part 3: Radiated Emissions Pre-Compliance for MIL-STD-461 & Automotive

This final part focuses on adapting your pre-compliance workflow for military and automotive programs. Compared with commercial CISPR testing, these regimes introduce different distances, antennas, bands, harness setups, and detectors. The goal is the same: build a bench process that correlates with chamber results so you can de-risk formal testing. Ob...

EMC PT2 TelonicUK scaled

EMC Application Note – Part 2: Pre-Compliance Radiated Emissions — Making the Measurement

This part focuses on the measurement workflow for commercial/industrial/medical products: choosing the site, controlling ambient signals, setting up the antenna/analyser chain, and applying all system gains/losses so your field-strength results are comparable to accredited lab data. Goal: Make repeatable measurements that correlate with a 3 m or 10 m chamber by controlli...

EMC PT1 TelonicUK scaled

EMC Application Note – Part 1: Equipment Needs for Radiated Emissions Pre-Compliance

In this first installment of Kenneth Wyatt's EMC Bench Notes, you'll get a practical, equipment-focused breakdown of what you need to start performing reliable pre-compliance radiated emissions testing. Set up your bench right, and you enable confident, traceable measurements long before formal testing. Key takeaway: Your basic toolkit doesn’t need to cost a fortune—but it doe...

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Spectrum Analysers for EMC Testing — Key Takeaways

Electromagnetic compatibility (EMC) testing is essential for bringing any electronic product to market. Failing a compliance test late in the design process can mean unexpected redesigns, delays, and increased costs. That’s why engineers are turning to spectrum analysers for pre-compliance measurements, helping to catch issues early. Good news: the complete Application Note �...

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TEKBOX Application Note: Using RF current probes with EMCview

RF current probes can be embedded into EMCview, using a suitable correction / conversion file. Thisapplication note elaborates the simple mathematical procedure to convert RF current probe characteristics, typically specified as transfer impedance in dBΩ or transducer factor in db(1/Ω) into a suitable correction fil for EMCview. RF current probe noise measurement specification in dB�...

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Micsig | Application of Optical Isolated Probes in Testing High-Power DC Power Supplies

Third-generation semiconductor materials, especially Silicon Carbide (SiC) and Gallium Nitride (GaN), show great market prospects in electric vehicles, renewable energy, industrial power supplies, military and aerospace, fast charging technology, wireless communication, consumer electronics, and other fields. These materials have advantages such as high thermal conductivity, high breakdown field ...

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Programming Example: Create a stair-step waveform using Python and PyVISA using LAN (SDG1000X, SDG2000X, SDG6000X)

The SIGLENT SDG series of arbitrary waveform generators can use waveforms created programmatically. The waveform data can be sent as individual samples formatted as binary little-endian, 2s complement values. In this programming example, we create a 10 point arbitrary waveform that starts at the least-significant bit and steps up to the most-significant bit to help with understanding the req...

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Inter Modulation Distortion (IMD) testing

Two SIGLENT SDG owners and Amateur Radio operators and frequent experimenters, Steve Ratzlaff AA7U and Everett Sharp N4CY, got together and built a very thorough test procedure for testing Intermodulation Distortion (IMD) on a Loop Amplifier using a SIGLENT SDG2042X generator and SSA3021X spectrum analyser. IMD is an important test for verification of audio amplifiers and radio receivers as hig...

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Multi Channel function generator synchronisation

1. Introduction Multi-channel function generators are useful in many situations. For example, in Radar testing the generator needs to output several phase coherent signals and for the phase to be independently adjustable for each signal. In 3-phase power line harmonic distortion testing, a 4 channel generator is required to simulate the multiple voltages and currents. 1.1 Problem A standa...

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Secure products without K-lock slots

Many products have Kensington, or K-lock slots to help provide a location to secure a cable lock or other device to help prevent theft. Some products do not have locations for cable lock connections. In this case, we recommend using a special glue or physical attachment system to secure the cable to the case of the instrument. Here is an example: https://www.kensington.com/p/products/s...