[time-nuts] Why a 10MHz sinewave output?

Chris Albertson albertson.chris at gmail.com
Tue Feb 7 22:31:40 UTC 2012

On Tue, Feb 7, 2012 at 1:03 PM, Attila Kinali <attila at kinali.ch> wrote:

> Addendum: Your counter input is mostlikely 50R. Even if it just enters
> a chip, as the chip itself should be matched to 50R. The input impedance
> should be noted in the manual of the counter.

The counter specs say that any 2.5 volt or greater sine or TTL level
square wave signal is acceptable.  I think they use a 74LS14 chip or
something like that.     This counter was made in the 1980s, not quite
current tech.

Chris Albertson
Redondo Beach, California

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