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

Pete Lancashire pete at petelancashire.com
Sun Dec 30 15:43:07 UTC 2012


On Sun, Dec 30, 2012 at 2:58 AM, David Kirkby <david.kirkby at onetel.net> wrote:
> 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.

70310A

http://www.home.agilent.com/en/pd-1000001661%3Aepsg%3Apro-pn-70310A/precision-frequency-reference
>
>> 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.

Depends. But, yes they are quite uncommon.

If you know your always going to have an external 10 MHz, what you
need is a 70310A Option 002. Option 002 deletes the oscillator (and
the battery pack).

But I've only once seen an option 002. My take is if you had the $'s
to buy a MMS setup, you just went ahead and got the full unit.

-pete



>
>>
>>
>>
>> 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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