Unitrunker Scope

[nlurker]

Is the Unitrunker Scope documented anywhere? Sorry if this is a dumb question, but I can't figure out what the squiggly lines mean.

What does the Scope represent? What is it supposed to look like? How do I interpret it, and how do I use it?

 

[BM82557]

At the UniTrunker.com home page look for -

 

[nlurker]

Thanks, but that doesn't really help. The scope in Unitrunker does not have the same controls and is not the same as UniScope.

I am looking for an explanation of how changing the RTL2832U receiver settings reflects in the scope. I can find no way to display the scope at the same time I am adjusting the settings, so it is very difficult for me to see how the scope changes when I switch back and forth from settings to scope.

I am hoping for something like: the X axis represents this, the Y axis represents that, adjust this setting to move the peaks up/down, adjust that setting trying to center something, etc. Right now I can't see how the scope helps me at all in finding optimum receiver settings.

 

[SCPD]

UniScope is limited to sound input devices so you can't use it directly with an HP-1E or an RTL stick. Hint: you can use VAC or VB cable.

UniScope provides several different views of the waveform.

The simplest is the oscilloscope view. It's pretty much the same as the 'Scope tab on the receiver window.

The other views are all eye patterns.

Eye pattern - Wikipedia, the free encyclopedia

The nice thing about an eye pattern is a good signal (that matches the symbol type and symbol rate) will be clear at the center. In the case of symbols that carry more than one bit of information - you'll see multiple eyes. For FFSK, the eyes are laid out horizontally. For C4FM and CQPSK, the eyes are stacked vertically. Again, a good signal will be clear in the center of each eye.