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Knowledge Base

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 ca...

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. ...

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. ...

Spectrum Analysers for EMC Testing — Key Takeaways

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

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

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

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

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

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

AWG Basics

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

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

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

Generating an Activation Code (Option Code)

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...

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Knowledge Base AC Power Supplies

Knowledge Base PCR-LE Series (3)

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Knowledge Base Data Acquisition Systems

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