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Re: Signal source block periodic phase deviation problem


From: Ceren Karaköse
Subject: Re: Signal source block periodic phase deviation problem
Date: Sat, 9 Nov 2024 19:22:30 +0000

Hi Engin,

The phase is constant. You're observing a constant phase sinusoid in real-time (using time sink) within a specified duration (which is determined by the number of points parameter of time sink). The time sink graph gets updated in real-time, hence the jitters seem to be happening.

For further info: https://wiki.gnuradio.org/index.php/QT_GUI_Time_Sink

Best,
Ceren

From: discuss-gnuradio-bounces+ceren.karakose=outlook.com@gnu.org <discuss-gnuradio-bounces+ceren.karakose=outlook.com@gnu.org> on behalf of Engin Karabulut <engink@gmail.com>
Sent: Friday, November 8, 2024 8:15:53 PM
To: discuss-gnuradio@gnu.org <discuss-gnuradio@gnu.org>
Subject: Signal source block periodic phase deviation problem
 
Hi everyone,

I am running a simple flowgraph where signal source block generates sine
wave and time sink shows waveform. Sample rate is 100 Msps and carrier
frequency is 1 MHz.


But phase of signal deviates periodically, you can see from link given
below.

https://streamable.com/pil3ma

Is there any way to circumvent this? Like changing a variable from inside
a block?



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