Full m/lab SD2000 schematics

[ZED]

Orbit the 100k 10 turn GB pots can wined up in any position,it all depends on the ground.

[ZED]

Geez $147, thats a bargain,nicely done eclipse.

[eclipse]

KingJL If you're serious about it I can hand it over. Orbit, this one is stated as "normally working" so no repairs needed.
Just this once, you know, I buy BROKEN trashy detectors normally in non-working state.

[KingJL]

147$ plus shipping and sales tax for the control box only, couldn't pass on that.

Now, I am REALLY envious!!!

[Orbit]

G'day Orbit

That info is there, a few people have given there take on it,basically you short the channels your not trimming by putting a jumper across the jumper pins,then you raise and lower a ferrite magnet over the coil and adjust the trimmer pot on the channel you didn't short with the jumper pins,adjust until the signal induced by the magnet is as low amplitude as possible,once done rinse and repeat for the other two channels.

Thanks Zed everything is clearly regards!

[Orbit]

147$ plus shipping and sales tax for the control box only, couldn't pass on that.

That's a great price! But more interesting to me to assemble it and make it work .

[eclipse]

147$ plus shipping and sales tax for the control box only, couldn't pass on that.

[KingJL]

Just bought SD2100 it should be fairly similar to the SD2000, with timings generated by LC circuit and EEPROM, everything else similar to the SD2000, but I'll find out more when it arrives in 2 months

I am envious!!

[eclipse]

Just bought SD2100 it should be fairly similar to the SD2000, with timings generated by LC circuit and EEPROM, everything else similar to the SD2000, but I'll find out more when it arrives in 2 months

[Orbit]

G'day Orbit

That info is there, a few people have given there take on it,basically you short the channels your not trimming by putting a jumper across the jumper pins,then you raise and lower a ferrite magnet over the coil and adjust the trimmer pot on the channel you didn't short with the jumper pins,adjust until the signal induced by the magnet is as low amplitude as possible,once done rinse and repeat for the other two channels.

ZED thanks ! I assumed I was not sure it means short-circuited ch 1 and geb ch and adjust ch 2 then then short circuit ch 2 and geb and adjust ch 1 connect JP ch 1 and ch2 and adjust the geb trimmer in which position the potentiometers are to remove soil of 100k?

[ZED]

G'day Orbit

That info is there, a few people have given there take on it,basically you short the channels your not trimming by putting a jumper across the jumper pins,then you raise and lower a ferrite magnet over the coil and adjust the trimmer pot on the channel you didn't short with the jumper pins,adjust until the signal induced by the magnet is as low amplitude as possible,once done rinse and repeat for the other two channels.

[Orbit]

If I noticed correctly no one wrote anywhere how to set it up correctly trimmer ch 1 ,ch 2 and ch - geb ?

[Andrei]

Hi Zed! Can you take a photo of the whole board ?

[ZED]

Hello detecto

See pic,the 330r resistor is part of the voltage divider,it helps zero the DC offset on the audio output.

[Orbit]

SD2000 There is also on the original pcb...to think no much importance..

PCB-2