Oscilloscope: Different offset per channel?

[int2str]

If I have two channels displayed, is there a way I can offset one left/right to make it overlap the other? If I turn the horizontal offset dial, both channels move, of course. How can I only move 1?

(DS1054Z here)

Thanks@

[Jeroen3]

First store it as a reference?

[SebG]

Hi

You can't shift signals in time since when the scope is triggered it captures both signals at the same time.  There is a way to compute the phase shift between signals if that is needed.  If you want to compare a signal to another that is delayed what you can do is capture one of the signals that you triggered and then display it as a reference while you trigger the other signal, then they should line up.

[tooki]

This does beg the question, though: Why can't DSOs have different horizontal offsets per channel? Since we have pre- and post-trigger memory, I don't see any reason you couldn't do it, since the horizontal offset is inherently arbitrary on a DSO.

[dom0]

I think the Lecroy 9300 series can do that in segmented mode, so later models should be able to, too.

[w2aew]

Old analog scopes with delayed timebases allowed you to do this.

[Simon]

This does beg the question, though: Why can't DSOs have different horizontal offsets per channel? Since we have pre- and post-trigger memory, I don't see any reason you couldn't do it, since the horizontal offset is inherently arbitrary on a DSO.

Processing speed, memory speed, memory quantity. Remember that all speeds and memory capacities at total and get divided by the amount of channels.

[MarkL]

On most DSOs you *can* delay each channel by a variable amount (also known as "skew").  But the amount is usually small, on the order of +/-100ns, and is used to adjust for differences in probe and cable delays.