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AMAZON multi-meters discounts
AMAZON oscilloscope discounts
If you're looking for an EMC consulting service
(rather than an EMC testing service), what features should you look for?
Here are a some of the most important things such a service should be
willing to offer:
- EMC risk assessments/risk analysis
- Practical EMC problem solving
- EMC legislation
- Planning EMC management strategies
- Regulatory issues in US and worldwide
- Contractual specifications
- RF engineering and design techniques
- Shielding effectiveness consultation
- Development of unique (ad hoc) measurement techniques
- Instrumentation and software development
- EM computational modeling
If EM interferences are suspected in
a particular environment, well-designed EMC modeling tools may be used
to:
- Predict the EM risks to electronic equipment, human health and the
electromagnetic environment
- Evaluate the EM performance of different designs without creating
prototypes
- Evaluate the EM performance of a design in many different
electromagnetic environments
Modeling is used in two types of scenarios:
- An EMC test scenario such as a radiated emissions or radiated immunity
test is modeled and the field at an appropriate test distance is calculated.
This type of modeling is often undertaken on an intentional transmitter
to assess the likelihood of disturbance to neighboring electronic equipment
or the threat to human safety. (See this
document for more details).
- Long parallel runs of cable can lead to cross-talk (the signal from
one cable interfering with the other). This can lead to unexpectedly
high voltages occurring on the "victim" cable. An example
of this when 25kV AC feeder cables used to supply power to trains. Line-side
(low-voltage) cables used for telephony and signaling purposes can have
significant voltages induced on them. The primary design objective in
this scenario is to limit the induced voltages on line side cables to
below 60V AC.
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Also see: EMC Testing: What to Look For in a Service |