[time-nuts] LeoNTP PPS output to PC DB9 input

[Mike Cook]

I don’t have one of these but I wouldn’t connect anything to anything without knowing the specs. 

I went to their site but could not find any specs on the outputs on the BNC connector. I should mail them at orders at uputronics.com for the details. 
 
It could be a simple BNC to DB9 soldering job.  But there is something else to consider.
What happens when there is a power cycle? 
Does the LeoNTP BNC output come up in the last configured state? Does it come up in OFF mode or with 10MHz? I doubt that your BSD box would appreciate 10Mhz.



> Le 29 mai 2019 à 07:18, tom burkart <tom at aussec.com> a écrit :
> 
> Quoting Anthony Dunne <agdunne at hotmail.com>:
> 
>> Firstly would this work?
> Yes.
> 
>> Secondly, my dilemma is the pin-out.
>> I believe on the DB9 pin 1 is DCD (the actual pulse) and pin 5 is the ground. Is this correct?
> Yes.
> 
>> Could I use a cable such as this:-
> No.
> 
>> Alternatively, is there a simpler way to achieve the goal?
> No, you really need a level shifting stage that converts the PPS to RS232 levels.
> 
> Tom
> 
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at lists.febo.com
> To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> and follow the instructions there.

"Ceux qui sont prêts à abandonner une liberté essentielle pour obtenir une petite et provisoire sécurité, ne méritent ni liberté ni sécurité."
Benjimin Franklin