[time-nuts] Anyone ever put rubidium in an HP 70000 series mainframe?

David Kirkby david.kirkby at onetel.net
Sun Dec 30 10:58:19 UTC 2012


On 30 December 2012 03:04, ewkehren <ewkehren at aol.com> wrote:
> I do feed a Rb in to all my istruments including my 70000 spectrum analser. I had two choices 301 or create 100 Mhz.

I'm not sure what a 301 is, so it means little to me.

> There blank modulrs available but make sure you get one with power module, power comming from the mainframe is if I recall 48 KHz.
> Bert Kehren

I've never seen a blank 70000 series module, but a friend of mine
tells me they fetch a fortune on eBay.

>
>
>
> Sent from Samsung tabletDavid Kirkby <david.kirkby at onetel.net> wrote:The HP 70000 series modular measurement system allows one to configure
> a range of modules to do various things such as spectrum analysis.
>
> There's an oscillator in the unit somewhere (I don't know where), but
> for higher accuracy one can buy an HP  70310A precision frequency
> reference, like this, although this unit is well overpriced. I paid
> $180 for mine.
>
> http://www.ebay.co.uk/itm/HP-AGILENT-70310A-PRECISION-FREQUENCY-REF-MODULE-/110807441589?pt=LH_DefaultDomain_0&hash=item19cca360b5
>
> In fact, you need that precision reference if you want to use an
> external reference.
>
> I was wondering if anyone had put a rubidium in one. I have a unit
> which is dead, and whilst it might be possible to fix it, the idea of
> just keeping the case and putting in something else is a bit
> attractice. I know it has  10 and 100 MHz outputs, so one would need
> to generate 100 MHz.
>
> Dave
>
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