Noob question about VWG bus 1 and 2

[raulsworldofsynths]

Probably a noob question.
Just set up my basic lzx system with VSG,ramps,CVE, and 1 VWG.
I got a 3u goike case with tiptop powered busboard and wondering about the bus 1 and 2 settings switch on the VWG.
What is the default for bus 1 or 2? That is is it from cv and gate buses?
I haven't changed the jumpers, just not clear up=bus1,middle=asynchronous,bottom=bus2?

I read the product page and I'm sure I'm just missing something.

[Matos]

Usually, bus one gets horizontal sync from the bus board from the vsg. Middle in unsynced, bus two is vertical.

[nickciontea]

I haven't changed the jumpers, just not clear up=bus1,middle=asynchronous,bottom=bus2?

absolutely correct. the buses will sync the oscillator to line or field (H or V) as long as your VSG is on the same bus board.

When your VWG is in lower speeds (the first 3 settings on the range selector) you will get scrolling bars in your asynchronous mode.

[lizlarsen]

Just to follow up on this, the way to know what's going on is to look at the VSG frontpanel! Any time you see an arrow pointing to a jack, on an LZX module, this indicates a normalled/switched connection. You can see that the Field and Line outputs have arrows pointing to the Bus 1 and Bus 2 input jacks.

These busses can be reassigned by patching other signals into the Bus input jacks on the VSG. For example, if you wanted to use an oscillator's square wave and distribute that.

[raulsworldofsynths]

ok. This definitely helps. Thanks for all the explanations. I haven't gotten my new terms" field and line" straight. Field is the horizontal and Line is the vertical as Matos said.

I remember reading the practical guide to video sync on the lzx site, but I guess I need a little refresher.
8_)

[Cat-A-Tonic]

The terms are a bit confusing at first.

What we see as horizontal lines
is actually the peaks and troughs of a vertically flowing wave,
and vice versa.

[lizlarsen]

This should help!
[video][/video]

[daverj]

I've mentioned this before, but for the new folks, I would encourage you to not fall into the habit of calling horizontal sync "line" sync. I know it's how Lars decided to call it, but it is not correct in the rest of the video world.

Line sync is what the video industry calls it when a camera locks it's vertical sync to the power line.

Horizontal sync is what is used to mark the start of a scan line and vertical sync is what is used to mark the start of a field in interlaced video or a frame in progressive video.

[lizlarsen]

Just to clarify, I don't refer to it as "line sync", the "line" notation on the VSG is an abbreviation for "scanline rate". It's a confusing abbreviation, when you realize "line sync" refers to something else, and I do plan to revise that the next time VSG frontpanels are restocked.

"Scanline rate", "field rate" as terms may be proprietary definitions on LZX's part, but they are not technically inaccurate.

TLDR;

Horizontal Sync = HSYNC = Scanline Rate = "Line" on VSG = what you use to sync an oscillator of >15.734KHz to create vertical bars.

Vertical Sync = VSYNC = Field Rate = "Field" on VSG = what you use to sync an oscillator of 59.94Hz - 15.734KHz to create horizontal bars.