Adexl Calculator - finding delay between 2 signals

Dear firebolt,

firebolt said:

In some cases, delay function is reporting delayB instead of delayA. Please help.

Is the occasional measurement shown as "B" computed from the same transient simulation as was "A"? In other words, are you measuring the delay in a set of simulations and find there is an occasional "B" value with mostly "A" values? If so, is it possible at time 0, the voltage waveform can start with the phase you have shown most of the time, but also can start 180 degrees out of phase from the phase you show. If it were to start 180 degrees out of phase from the green voltage waveform, then the "B" measurement will result as the rising and falling edges of both the current and voltage waveforms will have swapped with the phase change (i.e. falling edges of non-inverted waveforms will appear as rising edges).

Otherwise, you might try using an alternative delay measurement technique for two periodic waveforms written by Andrew Beckett. It is documented at the Cadence On-line support site at URL:

https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1O0V000009ESqGUAW&pageName=ArticleContent

I hope these two thoughts help unravel the mystery firebolt...

Shawn

Actually, I think all you need to do is to change the Start 2 relative to to be trigger rather than time. That means that the edge of the second signal (current) will be relative to to the crossing of the first signal (voltage).

The article that ShawnLogan mentioned was written before (if my memory is correct) the built-in delay function provided the ability to measure the delay of an edge of one signal relative to another.

Andrew

Actually, I think all you need to do is to change the Start 2 relative to to be trigger rather than time. That means that the edge of the second signal (current) will be relative to to the crossing of the first signal (voltage).

The article that ShawnLogan mentioned was written before (if my memory is correct) the built-in delay function provided the ability to measure the delay of an edge of one signal relative to another.

Andrew

Thanks Andrew & Shawn. Trigger with start2=0 combination worked. Now I get delayA values only.