[time-nuts] Mains frequency
Chuck Harris
cfharris at erols.com
Sat Nov 16 23:49:48 UTC 2013
Only if the noise in question comes from the trigger electronics.
In the case of a 60Hz mains derived signal, most of the noise is
going to be riding on the signal, and will be amplified with your
gain stage. A -delta amplitude noise signal will be zero when the
sine wave signal is at +delta. That will be sometime other than
the actual zero crossing... which is phase noise.
-Chuck Harris
Magnus Danielson wrote:
> On 11/16/2013 03:13 PM, Chuck Harris wrote:
>> Random noise always converts into time jitter. It doesn't
>> matter how much you amplify the input signal, noise can push
>> the detected zero crossing wherever it wants to.
> You are missing that you can alter how much trigger jitter you get.
>
> Cheers,
> Magnus
>
>>
>> -Chuck Harris
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