[time-nuts] PRS-45 Cs Standard

[Magnus Danielson]

I sent him the manual so that the serial readout of that digital cesium 
becomes easy and trivial.

Cheers,
Magnus

On 12/06/2014 10:56 AM, Bert Kehren via time-nuts wrote:
> Provided the unit works one simple way to get an idea as to the health of
> the tube is  to insert a plain multi meter in the 200 mV position. That
> inserts a 10 M resistor in series and you can calculate beam current.
> Bert Kehren
>
>
> In a message dated 12/5/2014 8:38:07 P.M. Eastern Standard Time,
> bob at evoria.net writes:
>
> Hi  Magnus,
> I'll certainly do that, but I'm waiting to pull the panels until I  know
> that it works.  I don't want a finger pointing at me saying I broke  it.  The
> reason I posed the question was that I'm wondering if this  thing, at 11 1/2
> years old, is on it's last dying legs.  But, I suppose I  won't find that
> out until it's powered up and I can download the status  string.  What will I
> be looking for?  I think I've read something  about ion pump current from
> past posts about rehabilitating an old Cs  standard.  I'll have to go back
> through that  thread.
>
> Bob
>
> From: Magnus Danielson  <magnus at rubidium.dyndns.org>
> To: time-nuts at febo.com
> Cc:  magnus at rubidium.se
> Sent: Friday, December 5, 2014 6:10 PM
> Subject: Re:  [time-nuts] PRS-45 Cs Standard
>
> Bob,
>
> Do open up and  take a look. Do take photos. Do share. :)
>
> Bet the bottom plate is a  good start.
>
> Cheers,
> Magnus
>
> On 12/05/2014 10:31 PM, Bob  Stewart wrote:
>> Hi Magnus,
>> It came in today.  Looks good  from the outside.  No obviously bad
> smells, but I can't power it up, as  my PSU hasn't come in yet.
>>
>> There is a paper Datum tag dated  6/2/03 on the outside.  Looking through
> the vent holes, I can see a Datum  Cesium Beam Tube assembly Model Number
> 7613A/077, Part Number 74514-110.   I can see that the back two panels have
> been removed and replaced, but nothing  obvious has been done on the inside.
> There are two SMB connectors on the  main board that don't have anything
> plugged in, but there's nothing obvious  that they'd connect to.  Does any of
> that tell me something that I don't  want to know?  It's going to be a long
> wait till Monday.   =)
>>
>> Bob
>>
>>         From: Magnus  Danielson <magnus at rubidium.dyndns.org>
>>   To:  time-nuts at febo.com
>> Cc: magnus at rubidium.se
>>   Sent:  Wednesday, December 3, 2014 1:38 PM
>>   Subject: Re: [time-nuts]  PRS-45 Cs Standard
>>
>> Hi Bob,
>>
>> The manual is in  your inbox.
>> It also describes a DS1 interface, which should be  interesting to know
>> what the odd telecom signals is about.  :)
>>
>> Cheers,
>> Magnus
>>
>>
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