[time-nuts] TADD-2 mini LED?

John Ackermann N8UR jra at febo.com
Thu Jan 21 13:25:21 UTC 2016

I'm not in front of the manual or the board right now, but if you look 
at the layout you will see two pairs of pads at the output end of the 
board.  If you look at the way the pads are physically arranged along 
with the schematic, you'll see that you can either connect to two of the 
pads to get an additional PPS output, or by using all 4 pads you can 
install a series dropping resistor (easiest to use an SMD part rather 
than through-hole) along with an LED that will flash PPS.

The T2-Mini does not have the SYNC and ARM LEDs of the larger board; 
there just isn't room.  The sentence in the manual about three LEDs is 
an error that must be left over from cutting and pasting the original 
manual.  You're the first one to point it out, and I'll update the 
manual as soon as I get a chance.  Thanks!


On 1/21/2016 5:02 AM, timeok at timeok.it wrote:
> Reading the operating manual of the TEDD2-mini is write:
>   Three LEDs indicate sync status
> as well as PPS activity
> and:
> You now have a choice to make about use of the AUX PPS/LED pad
> but in the schematic is not drawn any connection for the two more led as in the old version of the PPS divider.
> pse can I have some info about?
> ref:  http://www.tapr.org/~n8ur/T2_Mini_Manual.pdf
> Luciano
> timeok
> Message sent via Atmail Open - http://atmail.org/
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