Martin,
I believe they were saying Tesla (units of magnetic flux density)
1 Tesla = 10,000 gauss so 1 mTesla = 10 gauss
There is a relationship between flux density (B) and magnetic field (H) in A/m
B = mu H (Greek letter mu represents permeability of the material)
EN 61000-4-8 for power line magnetic field immunity testing is
probably what your customer would like to see. This test is commonly
done for devices using Hall effect transducers, coil transducers or
which use magnetic field deflection techniques (CRT products)
best regards
Tom Cokenias
T.N. Cokenias Consulting t...@tncokenias.org
P.O. Box 1086
El Granada CA 94018
tel 650 726 1263
cell 650 302 0887
fax 650 726 1252
At 2:21 PM -0800 2/7/2002, marti...@appliedbiosystems.com wrote:
We have a customer that is concerned about how our product, laboratory
equipment, will respond to electromagnetic disturbances from a high speed
train that runs close to their lab. The customer states that the
disturbance will be around 0.7-1.2 m Teslar.
Can someone please explain what the unit Teslar is and how that unit
relates, or if it relates, to the immunity tests of EN 61000-4-3 Radiated
immunity, or any other immunity test.
Has anyone ever had a similar concern from a customer dealing with this
type of disturbance?
Your responses are appreciated.
Regards
Joe Martin
EMC/Product Safety Engineer
Applied Biosystems
marti...@appliedbiosystems.com
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