Full m/lab SD2000 schematics

[Thomas]

Well Ivconic, I see it a little different,
The big multi-national companies need to protect the units they produce from any market competition, along with vertical integration, they will gain maximized profits for a while.
What better way then to keep details of their unit secret, and to make it illegal to use that knowledge by any one. If there were no non disclosure agreements, or copyright or intellectual laws,
the only way to have profits would be the law of market returns or who can sell the best unit for the lowest price.
This would create a growth in knowledge, competition, and product quality (more bang for the buck). Lets use MD's for an example if Whites, Fisher, and Minelab all had an equal knowledge base,
and there were no product protection laws the winner in the market place would be the one that could innovate the fastest and produce the best for the price, Real competition.
But instead of true competition in the market, we now have a corporate focus on law suits, inflating the stock price through stock buy backs, laying off and firing the workers so that the price to earning numbers look good,
while sales, and investment in research and development, fall.
Product innovation is weak at best, and a new color light, or sound added passes for new. Cannibalization of past R&D is now just a substitute for cutting edge.
Why worry, none of the knowledge owned can be used by any one, but the Chinese. Knowledge should not be the sole property of any group, keeping the people ignorant is what was done to the slaves, if any slave learned to read they would be shot, and possibly the owner too.
But I'm an Idealist, and the multi-nationals own the world, and the laws it operates under.

[Kev]

HI unregistered
Could you please expand on your input .. preferably about the values you would subsitute.
Am in the middle of modding my 2000 and would like some ideas .. asking you as i think you would have some better knowledge
thanks
george

For the record, most of the answers are all over on Doug's forum.
I had to test it out for myself, I tried manipulating the 33k, and found that it needs to be between 30k and 40k so 33k is perhaps optimum.
The gain resistors also appear to be optimum.
That only leaves the emitter tail current. Data sheets suggests a current between 3 to 4mA gives the lowest noise figure.
So this is probably what unregistered was on about. The bias on the current regulator transistor is beyond me and may be better with a simple diode stabilizer.
Also the compensation resistor maybe better around 220 ohms, especially if the tail current is trimmed fro lowest noise, but I've not tried that yet.
I'll leave it there.

Cheeeers

[ivconic]

Well Ivconic, I see it a little different,
The big multi-national companies need to protect the units they produce from any market competition, along with vertical integration, they will gain maximized profits for a while.
What better way then to keep details of their unit secret, and to make it illegal to use that knowledge by any one. If there were no non disclosure agreements, or copyright or intellectual laws,
the only way to have profits would be the law of market returns or who can sell the best unit for the lowest price.
This would create a growth in knowledge, competition, and product quality (more bang for the buck). Lets use MD's for an example if Whites, Fisher, and Minelab all had an equal knowledge base,
and there were no product protection laws the winner in the market place would be the one that could innovate the fastest and produce the best for the price, Real competition.
But instead of true competition in the market, we now have a corporate focus on law suits, inflating the stock price through stock buy backs, laying off and firing the workers so that the price to earning numbers look good,
while sales, and investment in research and development, fall.
Product innovation is weak at best, and a new color light, or sound added passes for new. Cannibalization of past R&D is now just a substitute for cutting edge.
Why worry, none of the knowledge owned can be used by any one, but the Chinese. Knowledge should not be the sole property of any group, keeping the people ignorant is what was done to the slaves, if any slave learned to read they would be shot, and possibly the owner too.
But I'm an Idealist, and the multi-nationals own the world, and the laws it operates under.

I was referring my "spits" on ML mostly when we talk about obsolete and discontinued models and SD2000 surely is.
I don't expect from them (and nobody else) to disclose their latest technology, that's for sure.
Their excuses for such behavior sucks. I got pretty lousy excuse from them once in the past when i asked for help on fixing FT16000 which was more than obsolete... made when Jesus walked this Earth!
Guess what they told me? Something like " technology involved in FT16000 is still actual and in use in our latest models" !!! Oooooooahahahahahahahahaha!
So i (as dedicated ML customer and fan than) was left without help and on my own! So, what could i do? Only thing i could do is to open it, trace it and try to dig it out and finally fixed it.
From that moment i realized how huge coc.suckers they are.
Same thing happened with Relic Hawk later. No legal help, no customer support... nothing! Again pretty lousy excuses!
So i traced it and posted it here on forum.
According to those (neo-globalistic-money-hungry-sons-of-the-"beaches") i should pack my device and send it abroad where "they will fix it", than send it back to me and charge lunatic price!
No wonder why most copies do come from "third party" East European areas; simply because there are no legal customer support and service, custom taxes are huge, posting is expensive.
I even proposed several times, to several big manufacturers; to come here (on Balkan) and to establish fully legal and regular customer support and full service; none of those accepted.
Than... if so... all you "big" manufacturers... go and "fock" yourself!
Minelab turns to be leading a$holing company among many others.
Such their attitude turned us here to be outlaws, to start learning and copying their devices.
Last time i acted so naive was in December last year when i made same proposal to XP owner. He was polite but also give me the same answer.
They expect us customers to spend more than extra money by sending our broken devices abroad on service. That's extra money, more than expensive, more than time consuming.
Why all that? When it is simpler, cheaper and faster to have legal customer support and service in each area where decent number of such devices are present already?
So if anybody from them ever wondered why there are people like some of us here, tracing and copying their "protected" products... well, i just gave answer above, it's more than clear why.
...
Yes those do have almost equal knowledge base. Same as in car industry; today there are no more significant differences among cars and classes related to manufacturers.
If you buy car from certain class; be sure it is the same at all manufacturers. Detectors too. Same crap by same or similar price.
Keeping the people ignorant will certainly preserve all the money for them. That's how Capitalism appeared and prevailed all those years!
This sad world stands on ignorance!
...
Balkan area as well as end East of Europe is pretty large area, indeed huge number of sold detectors there. Millions. One of the most potential market on the world.
Why? Because that's also area with richest Historical and Cultural heritage. It is the cradle of today's world and civilization.The largest number of archaeological places is located there.
That's also why the largest number of detectorists is also there.
Obviously that's not enough good reason to approach this potential market more seriously ... for "big" md manufacturers.
And that's the answer on all possible questions which maybe asked under this topic.
They all do come here in form and shape of some primitive shop, simply just to sell and take money. They don't give a squat later about dedicated customers.
I was naive, back in years, i risen my voice so many times, i made proposals, i wrote tons of emails... i faced complete ignorance, misunderstanding and deafness from their party (all of them).
So finally i gave up... with one huge "fock you bustards" attitude.

[Baterista]

I was referring my "spits" on ML mostly when we talk about obsolete and discontinued models and SD2000 surely is.
I don't expect from them (and nobody else) to disclose their latest technology, that's for sure.
Their excuses for such behavior sucks. I got pretty lousy excuse from them once in the past when i asked for help on fixing FT16000 which was more than obsolete... made when Jesus walked this Earth!
Guess what they told me? Something like " technology involved in FT16000 is still actual and in use in our latest models" !!! Oooooooahahahahahahahahaha!
So i (as dedicated ML customer and fan than) was left without help and on my own! So, what could i do? Only thing i could do is to open it, trace it and try to dig it out and finally fixed it.
From that moment i realized how huge coc.suckers they are.
Same thing happened with Relic Hawk later. No legal help, no customer support... nothing! Again pretty lousy excuses!
So i traced it and posted it here on forum.
According to those (neo-globalistic-money-hungry-sons-of-the-"beaches") i should pack my device and send it abroad where "they will fix it", than send it back to me and charge lunatic price!
No wonder why most copies do come from "third party" East European areas; simply because there are no legal customer support and service, custom taxes are huge, posting is expensive.
I even proposed several times, to several big manufacturers; to come here (on Balkan) and to establish fully legal and regular customer support and full service; none of those accepted.
Than... if so... all you "big" manufacturers... go and "fock" yourself!
Minelab turns to be leading a$holing company among many others.
Such their attitude turned us here to be outlaws, to start learning and copying their devices.
Last time i acted so naive was in December last year when i made same proposal to XP owner. He was polite but also give me the same answer.
They expect us customers to spend more than extra money by sending our broken devices abroad on service. That's extra money, more than expensive, more than time consuming.
Why all that? When it is simpler, cheaper and faster to have legal customer support and service in each area where decent number of such devices are present already?
So if anybody from them ever wondered why there are people like some of us here, tracing and copying their "protected" products... well, i just gave answer above, it's more than clear why.
...
Yes those do have almost equal knowledge base. Same as in car industry; today there are no more significant differences among cars and classes related to manufacturers.
If you buy car from certain class; be sure it is the same at all manufacturers. Detectors too. Same crap by same or similar price.
Keeping the people ignorant will certainly preserve all the money for them. That's how Capitalism appeared and prevailed all those years!
This sad world stands on ignorance!
...
Balkan area as well as end East of Europe is pretty large area, indeed huge number of sold detectors there. Millions. One of the most potential market on the world.
Why? Because that's also area with richest Historical and Cultural heritage. It is the cradle of today's world and civilization.The largest number of archaeological places is located there.
That's also why the largest number of detectorists is also there.
Obviously that's not enough good reason to approach this potential market more seriously ... for "big" md manufacturers.
And that's the answer on all possible questions which maybe asked under this topic.
They all do come here in form and shape of some primitive shop, simply just to sell and take money. They don't give a squat later about dedicated customers.
I was naive, back in years, i risen my voice so many times, i made proposals, i wrote tons of emails... i faced complete ignorance, misunderstanding and deafness from their party (all of them).
So finally i gave up... with one huge "fock you bustards" attitude.

I agree with everything you said ivconic. Also in Brazil there service failures and in addition has an absurd collection of taxes on imported products 100%, is disheartening.

[Carl-NC]

I even proposed several times, to several big manufacturers; to come here (on Balkan) and to establish fully legal and regular customer support and full service; none of those accepted.
...
Balkan area as well as end East of Europe is pretty large area, indeed huge number of sold detectors there. Millions. One of the most potential market on the world.
Why? Because that's also area with richest Historical and Cultural heritage. It is the cradle of today's world and civilization.The largest number of archaeological places is located there.
That's also why the largest number of detectorists is also there.
Obviously that's not enough good reason to approach this potential market more seriously ... for "big" md manufacturers.
And that's the answer on all possible questions which maybe asked under this topic.
They all do come here in form and shape of some primitive shop, simply just to sell and take money. They don't give a squat later about dedicated customers.

Your frustrations are legitimate but I think you're reasoning is flawed. Most of the detector companies simply don't have the bandwidth or presence to set up a service & support center in the Balkans or lots of other places. Keep in mind that US detector companies have been US-centric for 50 years and only in the last 10 years or so have they been seriously pushing into foreign markets. The service/support piece is certainly lagging but will come as the markets get stronger. I know that First Texas is making serious efforts at this.

[ivconic]

Your frustrations are legitimate but I think you're reasoning is flawed. Most of the detector companies simply don't have the bandwidth or presence to set up a service & support center in the Balkans or lots of other places. Keep in mind that US detector companies have been US-centric for 50 years and only in the last 10 years or so have they been seriously pushing into foreign markets. The service/support piece is certainly lagging but will come as the markets get stronger. I know that First Texas is making serious efforts at this.

Ok i accept that as facts form the (close or distant) past.
What has been done... is done.
Let's turn to (close or distant) future and let's try to improve situation and be smarter.
I gave here unbeatable facts towards present situation on these areas, yes it's true; huge number of hobbyists exist here.
Maybe, speaking in percentages; here on these areas there is largest number of hobbyists/population in a world, maybe...
Millions of metal detectors.
All of those, sooner or later, will tend to modernize own equipment, buy new one, repair old one, update, upgrade... whatever.
Ain't that indeed potent market? I bet it is.
We don't live no more in "old world" divided on East and West, on contrary; we live in one global village now.
Isn't the right time now to change something?
As dedicated hobbyist and enthusiast i will always salute changes which will improve situation, despite all disappointments from the past i talked about above.
Maybe First Texas is the one who will make the first step?
As far as i am concerned; WELCOME!

[Carl-NC]

If First Texas is smart, they'll make the first step. (They're pretty darned smart.)

[g.s]

GOOD EVENING TO ALL HERE.
my own sd2000.
please compare to yours pcb ..was a very pleasant..
www.youtube.com/watch?v=CRuXtC4mpZs

[Finderskeepers]

Hi g.s. Nice to see your circuit is working. Test your machine where there is minimal emi and it will behave very well.

[serci78]

Hİ mechanic. I want to cancel CTT pulse solid. I do with timings 62khz processor .I took off the redundant portions for . Is there a mistake? regards

[Mechanic]

Hi Serci,

Sorry I have not replied, to say I have been busy is an understatement!
No you can't connect up to there. You need to use a level shifter of some sort between the mcu and the transistors. The voltage swing at the transistors needs to be from 5+ to batt-. Perhaps feed the signal into the 40106 instead but you still need to make sure the voltage level of the signal is correct to turn the 40106 on and off.

Cheers Mick

[detectormods]

If you want to control the output use these, they work very well indeed. http://www.avagotech.com/pages/en/op...ate/hcpl-4661/

[serci78]

hi .Do you have a different ideas?

[Mechanic]

Hi Serci,

No, what you propose in the rar file will not work. You have all the control pins connected to the tlc271. The control pins should go to your mcu. You need a different chip as that one only has single throw switches, you need double throw, so when the control is off it connects the common pin to the nc pin and control on connects common to no pin.
The tlc271 controls the flyback voltage limit, don't connect it to the tx! It is connected into the front end fet control cct to lock the fets off when the voltage on the 200v cap is too low.

Perhaps Woody might have time to help you The optocoupler he has suggested would probably work.

Cheers Mick

[serci78]

hi. Tx flyback voltage 180v off under on