[time-nuts] Powering up a long inactive 5061A

[paul swed]

Scott far better then my response. Right to the point.
Regards
Paul
WB8TSL

On Thu, Jun 15, 2017 at 3:20 PM, Scott McGrath <scmcgrath at gmail.com> wrote:

> First you will need to power it up in Cs Off state and monitor the ion
> pump current by periodically switching to Cs On
>
> If you have a possibly good tube ion pump current should drop to zero in a
> few days to 3 weeks
>
> Thats your first step
>
> > On Jun 15, 2017, at 2:02 AM, Hugh Blemings <hugh at blemings.org> wrote:
> >
> > Hi,
> >
> > I've been assisting with the cataloguing and, where possible, testing of
> a bunch of test equipment from a deceased estate.
> >
> > One of the items is a 5061A which best I can tell has not been powered
> on for over a decade.  The High Performance tube has a warranty expiration
> date of 1988.  Serial number is 1936A01567 and has Option 01 and 04 and has
> the digital rather than analogue clock.  Minor but it's missing the bottom
> cover.
> >
> > My intuition is to set it to one side until I can become familiar with
> the operating manual and potentially bring power up to it slowly with a
> Variac or similar.
> >
> > I'd be curious as to the time-nuts view on whether this degree of
> caution warranted ?
> >
> > I suspect the Cs tube is long dead, but maybe I'll be pleasantly
> surprised ?
> >
> > Would welcome feedback on sensible/cautious first steps with the unit -
> initial need, if possible, is a "simple" go/no go/does it power on ?
> >
> > Cheers/73
> > Hugh
> > VK3YYZ/AD5RV
> >
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