The Discriminating (to iron) Pulse Induction. - Fantasy? .....Facts.!

[metalpopper]

Matt,
I think it may boil down to an attempt to arbitrarily redefine how some already arbitrary terms are generally/historically accepted.

We've seen this throughout the history of the metal detector. ...

.(.Did you ever read about 'Flat-earth believers, trojdor?)
It appears that we have a few in this thread, reincarnated as metal detectorists !.....matt

The original term 'T/R' is used to designate an early transmit/receive unit that doesn't ground balance.
It's already inaccurate, in that the correct term is 'induction balance'...but we'll gloss over that, and simply state that because the majority of us accept that T/R means an older non-GB detector, we all understand it.

The later term 'VLF', generally used to distinguish a ground balancing unit, is by it's own wording totally arbitrary. 'Very Low Frequency'...totally nebulous term...has nothing to do with GB...but we all accept what it means.
(Note that the VLF still utilizes the same type of inductance balance to get a signal as the TR...only the processing is different...but that term was already used for the IB/TR, so we needed something else.)

Now you would like to take the term 'PI' and redefine it's generally accepted usage. You might even be correct in that your terminology is grammatically more accurate...but it doesn't matter.
Like the terms T/R and VLF, the generally accepted definition of PI has been in use for some time, and you can't undo history. It's already in use as a generally accepted term throughout the industry.

It's kind of like the joke; "They had to call it PMS because Mad Cow Disease was already taken."


Something akin to 'literal Luddite's' disease?..........Matt

 

[metalpopper]

[attachment 342413 Zlynk.jpg]

 

[metalpopper]

n/t

 

[metalpopper]

https://www.google.com/patents/US9239400
For Dave.....From Minelab.


Metal detectors can be divided into two main types, depending upon the nature of their transmit field; CW (Continuous Wave) and PI (Pulse Induction) detectors. Some CW detectors transmit magnetic fields that have substantially only one sinusoidal frequency. Others can transmit a transmit magnetic field that is a combination of some small, finite, number of frequencies or, through application of a rectangular transmit signal to a broadband transmit circuit, a large number of frequencies.
PI detectors usually include switching electronics in the transmit electronics, producing a large number of frequencies in the transmit field.

Read it and retract ......matt

 

[Carl-NC]