I notice pirates don’t use good grammar (Are documents are protected ..) and
they don’t take American Express!
Seriously folks, however you feel about the standards, what is really at risk
from places like this is your credit card numbers. The standards may not even
be real, and the only
Hi Group,
I have a client that makes air conditioners for aircraft. They need to replace
an obsolete fan (no longer available) with a newer version. Both versions have
been tested for CE and RE and both pass the Category M limits by very good
margins.
Here's where it gets interesting and
Ken:
I have never had to do anything for DO-160 testing other than report test
data taken in a lab environment. The most recent test I did was to prove
that an RFID would go into a prolonged sleep mode when a box of maybe a
few hundred of them was loaded as cargo on a commercial airliner. As
Sounds to me like that DER is right on top of things. But the simplest path
to clearing the aircraft with the new subsystem isn¹t listed. Perform a
spectrum analyzer survey of the critical radios and look at the margin
between coupled noise from the old system to these radios vs. the radio
noise
A change was made in 3rd Ed. for routine mains hipot tests while clamping
devices are still in the circuit; specifically clause F.3.2 (Ed. 3).
The standard states the test can be carried out at 0.9 times the
clamping voltage of the device and not less than twice the working
voltage. Edition 2
Clamping voltage is the MOV voltage under specified surge
conditions. Typically that will be an 8/20 impulse.
IEC 61643-331, ed. 1.0 (2003-05)
clamping voltage VC
peak voltage across the MOV measured under conditions of a
specified peak pulse current (IP) and specified waveform
Your 1 mA
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