IDX-PRO+VDI

[der_fisherman]

IB is VLF?

Yes it is, but there is possibly a significant difference in frequency!

An IB or T-R could be a much higher frequency than a VLF, which works in a similar manner, but many believe that with the VLF design, the target can be better "analysed" and indicated.....

Which is why I "glossed over" such points, to stay within the "BFO and VLF" question.

regards

Andy

[gaby_sult]

For Andy ..... ((( Its like comparing a model T Ford car and a Ferrari really!!!! Both are cars, but many years of development separates the two!! )))


My IDX is Hyundai!!
regards
Gaby

[mohandes]

any body make larger or smaller coil for idx, CC or DD coil??i make 25.5 DD coil and CC coil(but cc not work for me)
regards

[mohandes]

BFO is usually a simple design, using two oscillators and a single search coil. The user "hears" the difference between the two oscillators and can make a guess about the position of the hidden metal, usually called the target. They are generally speaking, not very good in depth and cannot distinguish between different metals. If not set up correctly, the user will often miss even quite large metal objects. A lot of practice is needed with such an MD.

VLF is a name given to the the low frequency versions of a type of detector, often called T/R (Transmit and Receive), which use two coils, one overlapping each other.
One transmitting the output of an oscillator, the other receiving this signal, but it is so overlaid on the transmitting coil, so as to reduce the size of the received signal, you could say, it being in a "null" position or as near as possible.

If any metal target comes near to this oscillator signal from the transmitting coil, the signal gets distorted and the receiving coil picks this up. The frequency may change slightly, due to the different effects of certain metals on the oscillator signal even. An indication as to the type of metal.
Depending on the complexity of the receiving circuitry (the price of this detector is affected strongly by this complexity!), the type of the metal of the unknown target, its size and relative position and depth might be indicated to the user, allowing possibly a decision as to whether its worth digging up or not!!

Its like comparing a model T Ford car and a Ferrari really!!!! Both are cars, but many years of development separates the two!!

There are similarities to anyone who understands electronics, but for the normal user with little or no understanding of the electronics, this will not be obvious to him at all....

I hope this explains the differences for you in a manner that you could understand, though I have "glossed over" much detail.....but your question suggests that you are not electronically inclined, so I have hopefully addressed the answer in the same manner for you.

regards
Andy

thanks
i read before this PDF.i just search for type of detector completely .IB and VLF is same and good disc....
Metal Detector.pdfbfo.pdfeti549au_300.pdf
regards

[der_fisherman]

hi
idx is vlf detector.so what the def between vlf and bfo?

BFO is usually a simple design, using two oscillators and a single search coil. The user "hears" the difference between the two oscillators and can make a guess about the position of the hidden metal, usually called the target. They are generally speaking, not very good in depth and cannot distinguish between different metals. If not set up correctly, the user will often miss even quite large metal objects. A lot of practice is needed with such an MD.

VLF is a name given to the the low frequency versions of a type of detector, often called T/R (Transmit and Receive), which use two coils, one overlapping each other.
One transmitting the output of an oscillator, the other receiving this signal, but it is so overlaid on the transmitting coil, so as to reduce the size of the received signal, you could say, it being in a "null" position or as near as possible.

If any metal target comes near to this oscillator signal from the transmitting coil, the signal gets distorted and the receiving coil picks this up. The frequency may change slightly, due to the different effects of certain metals on the oscillator signal even. An indication as to the type of metal.
Depending on the complexity of the receiving circuitry (the price of this detector is affected strongly by this complexity!), the type of the metal of the unknown target, its size and relative position and depth might be indicated to the user, allowing possibly a decision as to whether its worth digging up or not!!

Its like comparing a model T Ford car and a Ferrari really!!!! Both are cars, but many years of development separates the two!!

There are similarities to anyone who understands electronics, but for the normal user with little or no understanding of the electronics, this will not be obvious to him at all....

I hope this explains the differences for you in a manner that you could understand, though I have "glossed over" much detail.....but your question suggests that you are not electronically inclined, so I have hopefully addressed the answer in the same manner for you.

regards
Andy

[jladre]

hi
idx is vlf detector.so what the def between vlf and bfo?

From the name itself you can get the idea of thier differences.

[mohandes]

hi
idx is vlf detector.so what the def between vlf and bfo?

[Qiaozhi]

hi guru
is Cast iron ferrous or non-ferrous??
new VDI for Idx i see in this forum.any body have it??
2tones how, have new or no.
excuse me.

"Ferrous" means "containing or consisting of iron".

[mohandes]

hi guru
is Cast iron ferrous or non-ferrous??
new VDI for Idx i see in this forum.any body have it??
2tones how, have new or no.
excuse me.

[scrungy_doolittle]

No, it is not.

Thanks. will have to try to understand the code and see if the commands are the same as the one I pointed to above on ebay.

[holyuser]

Is this display a nokia compatible?

No, it is not.

[scrungy_doolittle]

Thanks. It has been a long time since I used basic.
Is this display a nokia compatible? or is it one of these: http://www.ebay.com/itm/Blue-0-96-in...-/141494092860

[holyuser]

Here is code examples using Proton PicBasic compiler, but I belive they are understandable: http://www.picbasic.ru/forum/5-1709-1

[scrungy_doolittle]

Look at post #3572
here: http://www.geotech1.com/forums/showt...223#post225223

I see you are doing this with one of my favorite processors, the PIC24FJ family. I work on that family a lot. specifcally the PIC24FJ256GB110.
What I was interested in is the source to drive the display. I have a couple of these oled displays and never was able to get them to work with the arduino stuff.

[holyuser]

NICE, do you have the code for that available? I actually have a couple of those little displays.

Look at post #3572
here: http://www.geotech1.com/forums/showt...223#post225223