[time-nuts] FE-5680A Loop Lock Indicator

Azelio Boriani azelio.boriani at screen.it
Sat Sep 21 11:24:33 EDT 2013


If the lock output comes from the micro or a logic port with a maximum
output of 3.3 or 5V, a LED connected to it from +15 will be always ON.

On Sat, Sep 21, 2013 at 4:55 PM, Bob Stewart <bob at evoria.net> wrote:
> The instructions I got with this Rb said that you could hook an LED through a 5-10K resistor to the +15 supply and get a lock indication.  I'm using a 10K resistor and the LED lights as soon as it's powered up from cold.  Is the loop lock indicator circuit broken or is it just another strange option for these things?  I saw on one site that if you do it this way it prevents lock, but mine seems to lock OK with or without the voltage.
>
>
> Bob - AE6RV
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