[time-nuts] Looking for a Counter

Magnus Danielson magnus at rubidium.dyndns.org
Sat Oct 8 19:29:42 UTC 2011


On 08/10/11 17:43, Roy Phillips wrote:
> Chuck
> If you failed to get the Racal - don't worry, the HP is a better product
> without all that aggravation that comes with doubts about the front
> panel buttons that frequently fail, and the symbols that wear off. The
> HP 5334A or B are a better bet, and the 5445A even better, if you can
> accept the additional size and fan noise. I intend replacing the fan in
> my 5335A with a 12 volt substitute. Its just the hassle of finding a 12
> volt 300mA ? source within the instrument.

There is a +15V supply, but if you tap off prior to the 7815 and hook in 
a 7812 if you don't feel like using just a serial resistor.

Haven't bothered to replace the fan yet.

Cheers,
Magnus




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