[time-nuts] Re: Picotest U6200A problem with measuring PPS period very second.

[Erik Kaashoek]

But why can't you measure the 1 s period of a PPS?
If the counter would be able to do gapless measurement and you set the 
gate to 0.9s it should be able to measure the period of a PPS, at least 
my own build counter behaves that way so I was surprised the U76200A 
could not do that.

On 27-2-2022 14:25, Azelio Boriani wrote:
> Without a reference? If the same PPS acts as start and as stop then
> one (I suppose) rising edge is start and the next rising edge is stop,
> so a measurement every second is not possible. Maybe a dedicated
> hardware with two channels where one edge is the start for a channel
> and stop for the other is necessary.
>
> On Sun, Feb 27, 2022 at 12:08 PM Erik Kaashoek <erik at kaashoek.com> wrote:
>> I'm trying to measure the phase of a 1 second PPS from a cheap GPS
>> module using a Picotest U6200A
>> Set up in time/period mode, input 1. Trigger level is set to 1V, DC
>> coupling, all seems to work well but there is only one measurement every
>> two seconds which either misses output the in between periods of
>> averages over two periods.
>> Does anyone know if it is possible with the U6200A to measure every
>> period of a PPS?
>> Erik.
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