[Test-Equipment] HP 5245L Questions

[laker steve]

Gil,

I finally opened it up and found that two of
the 5121L nixie driver boards are missing and 1 nixie
tube on one of the other boards. Also seems that the
indicator lights, which are neon, are not all
working. Looks like the wires have corroded at
the bulbs and broken. Other than that the unit
looks like it works fine. I had it count another
precision generator and it is dead on.

If anyone has a couple of 5121L boards let me know,
I would like to get this unit completely working.
Any suggestions on where to find the small neons
would be helpful.

Regards, Steve 

--- gil smith <gil@vauxelectronics.com> wrote:
> Hi Steve:
> 
> I also have a 5245L from ebay.  I have used it a
> couple of times, in freq
> and period mode.  I seem to recall that all eight
> nixies were lit all the
> time (some counters can blank the leading zeroes). 
> It sounds like yours
> may have a problem.
> 
> I have an operating manual, but not the service
> manual.  I can look
> something up if you'd like.  The basic specs are
> that the counter is a
> 50MHz unit.  With the 5251, it mixes a fixed freq
> with the signal, and
> counts the difference (or sum), allowing you to get
> to 100MHz, in a
> confusing sort of way.  
> 
> The 5245L has an oven oscillator, and a max aging
> rate of 3 parts in 10**9
> per 24 hours, which is better than most counters,
> but not as good as the
> high-stability 5245M.
> 
> gil smith
> 
> 
> At 08:44 AM 2/15/02 -0800, you wrote:
> >Hello List,
> >
> >I just purchased an HP 5245L off ebay and now that
> >I have it I have a couple of questions. 
> >
> >The unit seems to power up fine however it doesn't
> >look like all the nixies light. When in the
> frequency
> >mode and gate set for maximun time, how many nixie
> >digits does it display ? At present only the four
> >right most tubes light. But the left most nixie
> >is lit as 0 in all modes, is this normal? 
> >
> >It also has the HP 5251A Frequency Convertor
> plug-in
> >which I have not yet tested.
> >
> >I don't have a users manual is there someone out
> there
> >that has it in a pdf file or at a minimum have
> >the specs.
> >
> >My 5 year old daughter loves to watch the nixies
> >count,
> >she now knows there are more that 100 numbers !
> >
> >Thanks, Steve
> >
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> 
>
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> 
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