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....@gnu.org <discuss-gnuradio-bounces+ceren.karakose=outlook....@gnu.org> on behalf of Engin Karabulut <eng...@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?