How do you measure conducted susceptibility?

The test is performed by introducing low to medium frequency noise over a few points of a circuit. Usually, the noises are applied to power and signal lines. If the circuit continues to function after a specified range of frequency, it passes the conducted susceptibility test.

What is conducted immunity?

RF conducted immunity (CI) is the test method and standard that substitutes for radiated immunity (RI) testing at lower frequencies. Due to antenna size, near field and grounding interactions, RI testing at lower frequencies is inherently problematic.

How can Conducted Susceptibility be reduced?

Radiated and conducted emissions from cables or conductors carrying common-mode currents can often be reduced by the use of common-mode chokes and/or EMI filters. EMI filters may also be employed to improve the equipment’s immunity to conducted emissions from other connected equipment.

What is CS114?

MIL-STD-461F CS114, a conducted susceptibility test applicable to power and signal conductors, is a simulation of RF signals inducing currents onto the interface cables. It is used in lieu of creating RF fields for the purpose of radiated susceptibility testing.

How is a susceptibility test for an EUT done?

Conducted susceptibility tests are often referred to as bulk current injection (BCI) because this is the most commonly used method. They involve inserting a controlled interference at the EUT wiring harnesses using a current injection probe to check the degree of functionality during and after the tests.

Are there any deviations from Antimicrobial Susceptibility Testing?

Any deviations from antimicrobial susceptibility testing methods as described in the following pages may invalidate the test results, especially for fastidious organisms such as N. meningitidis, H. influenzae, and S. pneumoniae.

Is it possible to test for susceptibility to all isolates?

While the optimal testing situation would be to perform susceptibility testing on all incoming isolates, that is unlikely to be practical or economical. Susceptibility testing of a subset of both endemic and epidemic isolates (i.e., every 10 th isolate) would provide useful data.

Why are there different types of susceptibility tests?

These differences arise for many reasons, including: different databases of susceptibility data, differences in interpretation of that data, differences in both antimicrobials and dosages used in different parts of the world, and public health policies.