Well, I'm not 100% sure to be honest....
However, I do know that at work we have to do a test of our aircraft engine fire extinguishing circuit and we have to make sure the current is high enough to blow the squibs in the fire extinguishing bottles. There are 2 different pulses to make sure the fire bottle blows (one straight from the battery bus and one that is digitally controlled from a control unit - this is the hard to see one).
The test straight from the manufacturer actually states to check it with a scope, however, the 123 we have at work can never seem to catch it. It's a very low current and super fast pulse and the 123 simply can't grab it. We can catch the pulse that comes from the battery bus but not the other. I actually grabbed a 0.5amp circuit breaker and tried to catch it that way but the pulse is not of a long enough duration to pop it.
So I'm not sold on the 123 quite yet......maybe there's something we are missing with it.
