garrett crossfire coil socket connection

[skorpio]

garrett crossfire coil socket connection wrong i need correct connection

[skorpio]

[Qiaozhi]

From Inside the METAL DETECTOR page 127:

[skorpio]

[skorpio]

great master thank you very much I made the coil socket connection as in the picture above but it did not work, where could the error be?

[kt315]

russian guy does repair in a field.

[Qiaozhi]

I have just checked the Crossfire coil on my Garrett GTAx1000 ->

pin1 = SCREEN
pin2 = BLACK
pin3 = RED
pin4 = WHITE
pin5 = GREEN

[kt315]

coil Imaging Super Deep

[kt315]

I have just checked the Crossfire coil on my Garrett GTAx1000 ->

pin1 = SCREEN
pin2 = BLACK
pin3 = RED
pin4 = WHITE
pin5 = GREEN

i see on his pic the socket has erased pins. he must buy new socket, open the coil and check every wire by tester on Ohms. without this work all his 'where could the error be' is dead matter.

[Qiaozhi]

coil Imaging Super Deep

That's the Garrett Imaging Coil. The one he has is a Crossfire coil.

[kt315]

The one he has is a Crossfire coil.

what type detector he has?

[ivconic]

The Garrett GTI series uses two types of coils.
"Regular" with 2 coils and "Imaging" with 3 coils.
That's why for example the GTI2500 has two RX stages with two OP37s.
When using a "regular" coil, one of the RX stages is inactive (shorted to ground at the input, as I recall).
When using the "Imaging" coil, both RX stages are active.
"Imaging" option is only for depth determination and graphical representation on the display. ("Gradiometer" principle)
Without insight into the source code, I cannot claim that it has another role.
But it is possible that the two RXs have an additional role.
Good historic effort by Garrett.
It will go down in history that they once tried and did it.

[ivconic]

Zoom In those photos to clearly see:
1) First photo is RX board from GTI1500, you can see clearly two OP37s
2) One of my GTI 2500s
3) Best Imaging coil I had
4) Non-Imaging coil "Scorcher" type, you can see the blue coaxial not connected, but as I recall it was shorted to ground on the connector side

[ivconic]

We've written a lot here... and we haven't helped Scorpio much.
Especially since I am very doubtful about the accuracy of the sketch from [email protected] !??
(Check out some of the traces on sch, you'll find they don't make any sense!)
So I had to go through my extensive paper archive and find what Scorpio actually needs!

[ivconic]

As it appears... the "second" RX doesn't seem to be shorted to ground at the Non-Imaging coils, as I thought.
It was a long time ago, it was forgotten easily by me.
Probably in that case the "second" RX is "shunted" on the frontend itself.
In order not to introduce additional interference into the overall RX signal.
I should look at it, on the pcb, draw the exact diagram.
I used to have it on paper but I can't find it.
In any case it is irrelevant to solving the problems that Skorpio has.
I had to mention this, so as not to cause further confusion, because in previous posts I mentioned that the "second" RX was shorted.
And it turns out not to be.
So that assumption of mine should be ignored.

P.S.
That was the audio engineer spoke from me, because on audio preamplifiers the input is always shorted to ground (in connector),
when the preamplifier does not receive any signal from the outside.
The subconscious is a miracle!