Does ΔE refer to an electron? And so the uncertainty principle says if we know where an electron is at any point in time means we can't know its momentum, and to know its momentum we can't know its position?

And further does this apply to smaller particles in QM? Is ΔE a change in position, and Δt a change in time, i.e. are you saying that as a particle moves its position changes by ΔE (distance) in the period of time Δt?

Which ever it is, the EEP is undetectable for a similar reason. There is nothing small enough to indicate the presence of an EEP so the uncertainty principle remains in tact.

But the EEP does define the shortest possible length of time that can be measured. It has physical presence and momentum, and its pulses are theoretically the shortest measurable length of time.

If this is a fundamental limit that applies to the Heisenberg uncertainty principle I do not know. If so, it seems to me we would have to be able to detect either the position or the momentum of the EEP itself. What is there that small if the EEP itself is the smallest elementary particle and therefore seemingly undetectable?

Let me add a thought that is related. The EEP is an entity in space-time. There is no rest state like with an electron. The EEPs that make up an electron are in constant movement at the speed of light inside the electron's dimensions.