Re: [Discuss-gnuradio] Number sink and making a clock

[Derek Kozel]

Hello Santos,

Do you have a throttle block in your flowgraph? By default samples will be handled as fast as your computer can handle. The frequency of the signal source block is just math a based on the sample rate. However GNU Radio does not by default enforce the sample rate to be "realtime" based on wall clock time. Adding a throttle block will force the data stream through it to be handled at approximately the rate which you specify in the throttle.

Regards,

Derek

On Tue, Sep 6, 2016 at 12:17 PM, Santos Campos <address@hidden> wrote:

Ah that did slow it down to more real time!

So, data isn't really streaming out of the signal source block like the parameters would suggest, is it?

My expectation with forcing a long period was it'd stream high for 10s and low for 10s.

On Tue, Sep 6, 2016 at 1:24 PM, Nicolas Cuervo <address@hidden> wrote:

Hi Santos,

inside the number sink there is a field called "Update Period", which you can reduce to a value that suits your needs. For what I understand of your setup, maybe you have a rather big number here in comparison with the update rate of the sink. Try reducing this value and let us know if this helps you solve your problem.

Cheers,

-Nicolas

On Tue, Sep 6, 2016 at 7:49 AM, Santos Campos <address@hidden> wrote:

Hello, all!

I'm using a square wave to make a clock(frequency = .05 Hz, Period = 20s).

It shows up well in a time sink, but has trouble gaining stability in a number plot.

How can I get the number sink to update in real time?

Thanks and any help is much appreciated!

-Santos

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