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

Roy Phillips phill.r1 at btinternet.com
Wed May 20 09:16:07 UTC 2009


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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