[time-nuts] Fundamental limits on performance

Bob Camp lists at cq.nu
Mon Sep 14 21:14:15 UTC 2009


Hi

If you are shaking small stuff at low frequencies, a long throw low
frequency speaker can do a pretty good job as a shaker. You can "eyeball"
calibrate to a reasonable (<10%) level of accuracy. 

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Magnus Danielson
Sent: Monday, September 14, 2009 4:59 PM
To: jfor at quik.com; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Fundamental limits on performance

J. Forster wrote:
> I've watched a brassboard of a spacecraft payload I was building on a
> shake table. It just weird to watch screws backing out of holes as if by
> magic, components dancing, and plates oilcanning.
> 
> A real education!

Now, that's why I want one for myself... if I had the space and money.

However, it's about acoustics and mechanical design, and I am not 
totally clueless on those issues, just not done any *real* work.

Cheers,
Magnus

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