From usmanhaider89 at gmail.com  Fri Aug 12 12:53:21 2016
From: usmanhaider89 at gmail.com (Usman Haider)
Date: Fri, 12 Aug 2016 17:53:21 +0500
Subject: timestamp transmission accuracy
Message-ID: <CANxWOTaU=Pn0M4wjKUDGH1xGUhbdyFSqh=p7=Zdcf-o9Xi+3gw@mail.gmail.com>

Hi,

I am trying to run an application written in GNU Radio. The application
insert tags e.g. "tx_time", "tx_sob" to control the transmission time. The
value of "tx_time" is such that data is transmitted at start of new second.
But I observe that the transmission and PPS is not synchronized when I see
the transmission and PPS on scope. Sometime the transmission is late and
sometime it is early. Has anyone faced this issue? Are there any examples
that I can test. Thanks.


--
Usman
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From usmanhaider89 at gmail.com  Sat Aug 20 10:55:25 2016
From: usmanhaider89 at gmail.com (Usman Haider)
Date: Sat, 20 Aug 2016 15:55:25 +0500
Subject: timestamp transmission accuracy
In-Reply-To: <CANxWOTaU=Pn0M4wjKUDGH1xGUhbdyFSqh=p7=Zdcf-o9Xi+3gw@mail.gmail.com>
References: <CANxWOTaU=Pn0M4wjKUDGH1xGUhbdyFSqh=p7=Zdcf-o9Xi+3gw@mail.gmail.com>
Message-ID: <CANxWOTbE7nOZ2o-=B8N0iD9Dh1fHzfaVqFamvjwSk=yxCLv4Sg@mail.gmail.com>

Can somebody please comment on it?

--
Usman

On Fri, Aug 12, 2016 at 5:53 PM, Usman Haider <usmanhaider89 at gmail.com>
wrote:

> Hi,
>
> I am trying to run an application written in GNU Radio. The application
> insert tags e.g. "tx_time", "tx_sob" to control the transmission time. The
> value of "tx_time" is such that data is transmitted at start of new second.
> But I observe that the transmission and PPS is not synchronized when I see
> the transmission and PPS on scope. Sometime the transmission is late and
> sometime it is early. Has anyone faced this issue? Are there any examples
> that I can test. Thanks.
>
>
> --
> Usman
>
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