[time-nuts] 5070B once more....

[Henk]

Hello,

The Wavecrest DTS uses a large airflow to keep temperature >differences<
small enough for low tempco in the interpolators. This can also be the
case for the hp5370, thus be carefull.

henk

> Hello Pierre-François
> A point of personal interest in your email  - -  The noise of the fan in
> the
> 5070B, this would appear to be a problem with a number of the older items
> of
> Hewlett Packard, and other manufacturers.
> The items are usually  fitted with a Papst fan,with a high throughput of
> air
> running from the power line.  Has anybody tried to replace these fans with
> a
> more modern type (12/24 volt). I'm sure the designers were being very
> proper, but I cannot believe that a counter should require such a large
> volume of air moving through it ? I have an EIP 545 Counter and an HP
> 5335A
> which both have Papst fans and are very noisy
> Any ideas on this.
> Roy
>
>  ----- Original Message -----
> From: "Pierre-François (f5bqp_pfm)" <pfmonet at wanadoo.fr>
> To: <time-nuts at febo.com>
> Sent: Wednesday, May 20, 2009 9:54 AM
> Subject: [time-nuts] 5070B once more....
>
>
>> Hi The Gang,
>>
>> I've revitalized my 5070B I got few years ago and since a week or two it
>> has seen again passing into it few electrons after so long... lol...
>> Now I'm wondering which software I could use to grab data from it to the
>> PC and then to analyze the buffers to see the stability of my rubidium
>> source synchronised with the 1pps coming from the GPS.
>> I've on a dedicated PC (XP) a GPIB/USB adapter for this application.
>> Could
>> you tell me which sw I could use to do this?
>> I want to avoid to reivent the wheel by writing another piece of
>> software.
>>
>> The 5070 (A or B) is really a great piece of hardware, I love it, exept
>> its noisy fan...
>>
>> Very good idea to invite Dave Chu to join the group, I'm sure his heart
>> will vibrate to see that his baby is still alive for a very long time...
>> ;-))
>>
>> Best 73's to all of you.
>> pf, F5BQP
>>
>>
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>
>
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