[time-nuts] TAPR TADD-2 PIC frequency divider

[John Ackermann N8UR]

Magnus Danielson said the following on 05/23/2009 07:45 AM:

>> Since the TADD enclosure has two DB-9 cutouts, one nice option (which 
>> I haven't tried yet) would be to wire the LED, the 5/10 MHz jumper, 
>> and the ARM switch connections to a DB-9 and mount that in the 
>> enclosure, then mount the LEDs and jumpers to a mating connector.
> 
> I was actually contemplating the same. I think that would be a good 
> solution. It would also allow for remote control and monitoring. Tossing 
> in a PPS in there should not be hard and would make sense.

There's a "secret" extra PPS output available that could be used on the 
DB-9.  Look behind the ARM connector and you'll see a pair of pads 
labeled "AUX PPS".  Those are a simple PPS signal buffered by a leftover 
gate on the 74AC14.  Not a nice low Z output like the primary ones, but 
potentially useful...

John