I now have another question: What is the importance of a particular pulse delay?

[parrott]

Gosh everyone reading this question, please understand that I'm
trying to learn some basic facts about the pulse technology...

I'm long in tooth and confess my first experience with a metal detector
was during basic training at Camp Carson Colorado, 1953, and the detector
was a SCR-625 used to detect anti-tank land mines. It was a
primitive VLF-type dating back to about 1943.

I know a little about the VLF-type detectors and how the kHz affects
their basic ability to find small or larger placer gold...

In someway, does this roughly correlate to the pulse delay of a Pulse type
gold-specific detector?

 

[Wirechief]

Hi parrott, the pulse delay setting will determine how sensitive the PI detector will be. The delay is measured in microseconds and the lower the setting the more sensitive your detector to small gold or low conductors. Ok I hope this helps. Merry Christmas and God Bless!

John Tomlinson,CET

 

[bearkat4160]

What about the pulses per second of a PI detector? Does that also effect the sensitivity of the machine? Such as the Infinium is rated at 730 PPS. The new Whites TDI is rated at 3000 PPS. Does that mean anything of a big difference of the 2 detectors besides the uSec speed.

I'm still trying to figure out what uS the Infinium operates at for its most sensitive setting.

Thanks,

Alan

 

[Uncle Willy]

True but it would be nice to have a control where you could set it exactly at whatever point you wished for different kinds of metal and conditions.

Bill

 

[Uncle Willy]

Yeah and I believe the White has a control to set the pulse rate at whatever uS you want. Would be nice to have one of those on the Infinium or an explanation of where to set the discriminator to achieve whatever rate you wished. Would make it much more versatile.

Bill

 

[parrott]

Wirechief... can you give more details? I do understand uS. And I thank all
of you who posted to my question... Please keep the answers coming...

 

[parrott]

howdy bearkat4150... you mention one pps at 760 and another pps at 3000.
Dunb ol' me; how does "pps" correlate with "uSec?"... Thanks for posting...

 

[bearkat4160]

That the Infinium while it is pulsing at 730 per sec. It is sending out frequencies in the range of 150 kz to 150k khz. That seems to be very high freq and should be a sensitive unit. Other than that I dont know how PPS and the uS go together. I guess they are 2 different functions.

Alan

 

[parrott]

I now understand that changing the pulse rate will most likely upset the ground
balance settings... This could in some way alter the ability of a pulse to handle
both magnetic black sand and any desert alkali soils ( while dry in the upper
surface) contain a little moisture at a depth of about 7-inches).

This midrange "zone" is where in some desert areas, due to a little moisture
in the the ground changes from dry loose-pack to a wetter tigher ground.
The alkali, now containing moisture becomes conductive.

 

[Eric Foster]

The pulse delay and the TX pulse rate do not interact with one another to any noticeable degree. The pulse rate used is a matter of the basic circuit design philosophy. I tend to prefer high pulse rates while others prefer lower ones. It's mainly determined by response speed, noise reduction and acceptable battery life. The TDI has a pulse frequency control which only shifts things a small amount, and its purpose is to counteract interference. It does not change your GB settings or the effect of the pulse delay.

Eric.

 

[JANT1962]

hola parrot is a detector that can help in the arrest of gold is deep DEEPERS or failing XR-71 as they have pi VLF and go to the web geotech hai lucky find all the details in your search.