[time-nuts] 10MHz standard for comms receivers

Dave B g8kbvdave at googlemail.com
Wed Oct 3 08:55:28 EDT 2018


The problem with that approach to EMC compliance, is all it does is fool
the QP detector in the test/measurement RX.

It does nothing to actually reduce the amount of radiated crud, in
essence, it's the result of excessive "Bean counting" by the production
costs tracking types.

Small parts may not radiate that much, but what they are driving could
do. Especially if that in turn is driving something over a length of cable!

Regards.

Dave B.


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On 02/10/18 17:00, time-nuts-request at lists.febo.com wrote:
> The main reason for spread spectrum is to make EMI requirements easier to pass. 
> Once you get to a small enough part, it really doesn?t generate all that much EMI internally.
> Again, a lot of assumptions get into that. 

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