[Soekris] Soekris & NTP

[Bob Camp]

Hi

The crystals in the boards I have from Soekris are very good. You  
will have a hard time improving performance by replacing them with an  
un-compensated source.

If you have big temperature swings in your environment heating things  
may help. Under normal conditions you may be moving the crystal to a  
less stable region with the heater.

Bob Camp



On Jun 22, 2007, at 5:31 AM, Bob Bishop wrote:

> Hi,
>
> On 22 Jun 2007, at 03:35, David Duchscher wrote:
>
>> On Jun 21, 2007, at 8:47 PM, Bob Camp wrote:
>>
>>> A reasonable alternative is to grab what ever frequency you have
>>> and use a clock multiplier / divider (like an ICS 525).
>>
>> Yea, thats what I am investigating now.  A Soekris 4501 clocked  
>> from a
>> TAPR Clock-Block with input from an OCXO.
>> http://www.febo.com/pages/soekris/ shows this solution except they
>> use an external HP Z3801A GPS disciplined oscillator.
>>
>> --
>> DaveD
>
> An alternative might be to get one of the programmable XO parts at  
> 33.333333 MHz (not sure about setting accuracy, jitter, ...) and  
> find a suitable oven - they are available commercially.
>
> --
> Bob Bishop          +44 (0)118 940 1243
> rb at gid.co.uk fax +44 (0)118 940 1295
>
>
>
>