[time-nuts] Which HP Frequency Counter?

[Jean-Christophe Deschamps]

Dear group,

I consider buying a used lab frequency counter / timer --preferably 
HP/Agilent-- covering from few mHz to perhaps 400 MHz.  I'm worried 
that models handling high frequencies seem to be limited to under 100 
mV input signal max. I don't want to destroy an input channel each 
other day when calibrating/repairing some instrument.  Also are there 
instruments with high impedance input? 50 Ohm is not quite right for 
investigation in the guts of most designs.


Is it possible to find a not-too-old model under $800?  I would like to 
find something in France or UK or Europe, but it seems hopeless in this 
budget.  I would favor a repairable model (with available service docs 
& schematics).

Your expert advises are more than welcome!

--
<mailto:jcd at q-e-d.org>jcd at q-e-d.org