Message: 5
Date: Thu, 18 Feb 2010 17:13:55 -0500
From: "Bob Camp" <[email protected]>
Subject: Re: [time-nuts] Advice on 10 MHz isolation/distribution
(Clay)
To: "'Discussion of precise time and frequency measurement'"
<[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
>Hi
>
> Have you looked into any actual data on small rf transformers under
> vibration at 10 MHz?
Hi,
No. I have experience with low-noise designs under vibration, however. What
is the compelling reason for even considering such a device when a design is
available that doesn't need it? Sounds like risk without an upside to me.
>The phase noise of your reference is going to head up by your +56 db. As
>long as the transformer's impact is well below the reference, it will not
>show up in the output signal.
any spur larger than -130 dBc will be an issue. It doesn't take much vibe to
do that. And the synthesizer has to operate under 10g RMS.
>Noise at the load is a problem, no matter how it gets there. Transmission
>may not be inside your scope -yet. It's still an issue that directly impacts
>what you are trying to do.
Only one device is at the end of a long cable, with reduced performance
expectations. The others are local and share a common ground.
I am familiar with the various types of capacitors properties and frequencies.
Clay
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