QT GUI time sink

GNU Radio
1

Hi all,
When a complex signal is given to QT time sink block it displays the
signal in blue color.There is a red line also at zero level.is this
the DC component??And it doesn’t display the imaginary part as in WX
Scope sink block?
Regards,
Ali

2

Hi Ali,
There should be a legend on the right of the plot [1].
Your second line is the imaginary part.

Greetings,
Marcus
[1] http://i.imgur.com/kfXiRsX.png

3

Hi Marcus,
The legend only says 'Data 0’and ‘Data 1’.However, it can be
changed.Why is the imaginary part zero?

On Thu, Jul 17, 2014 at 12:43 PM, Marcus Müller

4

I don’t know why the signal you’re feeding to your sink has a zero
imaginary part, since I don’t know that signal.
That’s something that you’ll have to figure out.

Greetings,
Marcus

5

On Thu, Jul 17, 2014 at 4:23 AM, Marcus Müller
[email protected]
wrote:

I don’t know why the signal you’re feeding to your sink has a zero
imaginary part, since I don’t know that signal.
That’s something that you’ll have to figure out.

Greetings,
Marcus

Ali,

Agree with Marcus. How are we to know what’s supposed to happen with
your
signal.

But yes, the blue is the real part and the red is the imaginary part.
What
Marcus showed you was an update to the blocks to label them better as
Re{}
and Im{}. You’re just running an older version where the data is simply
labeled Data 0 (the real part) and Data 1 (the imaginary part).

Tom

6

Thanx Tom!