Swep recording – Channelizer

First step.
I made sweep recording of the spectrum with enabled Channelizer (channel Center is 146 MHz and channel Spacing is 25 KHz). The picture of spectrum: f146MHz_fdev_12KHz_LF1KHz.png
Second step
I select play recorded spectrum and what I get You can see on the second picture: f146MHz_fdev_12KHz_LF1KHz_Channelizer.png

my question is:

What is the reason that the trace is moved to the right with value equal to: frequency= Channel Bandwidth/2 ?

Regards, Miran

Attachments:

You must be logged in to view attached files.

It looks like the channelizer only saves 8 channels instead of the expected 9. (Look at the sweep size to verify). Might be a rounding issue. I can look into getting a fix for this next release. Otherwise it does look like it is properly calculating your channel powers. It is still usable but will contain 1 less channel. You might have to increase your span to include all the channels for now. Also, note, the start/stop/center frequencies displayed during playback are the settings at the time of capture. You will want to use the marker readout to confirm the channel frequency.

Thanks for the feedback Miran,
Andrew

Hi Andrew

Yes, I agree with You. Is still usable. But don’t look nice.
Like a already wrote, this option it’s very useful.

I’m really happy with your product. They are really useful. In many cases I don’t need anymore to use very expensive and heavy spectrum analyzer. To have possibility to connect GPS to spectrum analyzer is just excellent. I have some ideas to improve this option. But not now. I don’t want to be annoying with my comments. 🙂

thank you for your patience.

Regards Miran

[Author]

Posts