[sdiy] A Frequency Standard for Poor People?

[Eric Greenwood]

I'm new to all this SDIY jazz...
Why would you want a frequency standard from an external source?  What
applications does this have in the synthesizer world?

Thanks

Eric

-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of harrybissell
Sent: Monday, December 15, 2003 9:06 PM
To: J. Larry Hendry; synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] A Frequency Standard for Poor People?

No problemo...

I just average it over a 24 hour period... its works great but any
outages tend
to
make me forget the correct reference point... then i go to work LATE
:^P

(moral of the story... powerline frequency in the USA is good enough for
a
digital
clock... and thats about all :^)

H^) harry

"J. Larry Hendry" wrote:

> > All the frequencies in video are multiples of 60 Hz in US
>
> Don't use 60Hz as a reference. :)  Power line frequency is constantly
> changing as it responds to the always present unbalance between
generation
> and load.  In the USA / Canada eastern interconnect, normal
hour-to-hour
> fluctuations are in the range of 59.97 to 60.03.  Excursions created
by
> lagging response to load changes, or sudden unexpected loss of
generation
> can easily double that.  While 3/100 of a cycle does not seem like
much, it
> adds up when you multiply it by 100 or 1000.
>
> Larry Hendry