Problems with DFX Adjustments

[Leny]

Hello,

I have there a small problem - i have tried the programs from http://dfx.oz-space.de/. No idea who can such with this Adjustments. The VDI Sens on 80, Preampgain on 4 and then yet the AC Sens on 80 - there the DFX whistles with me out of all holes (DFX Beebs all time!) (the remaining attitudes have I naturally adapted).

To my detector: is a DFX E series with Spiderspule .



My Adjustments:

Target Volume 63
Audio Treshold 31
Tone (Audio Freq) 231
Audio Disc ON
Silent Search OFF
Mixed-Mode OFF
A.C. Sensitivity 75
D.C. Sensitivity 40
Backlight 0
Viewing Angle 25
Pro Options
Ratchet Pinpointing OFF
S.A.T. Speed 6
Tone I.D. On
V.C.O. ON
Modulation OFF
G.E.B. / Trac
Autotrac ON
Trac View ON
Autotrac Speed 8
Offset: +1
Trac Inhibit ON
Coarse G.E.B. 0-255 AUTO
Fine G.E.B. 0-255 AUTO

Discrimination
Disc. Edit Reject -95 bis -30, 0 bis +10 , +95
Disc. Edit Accept -29 bis +94
Block Edit
Learn Accept on/off
Learn Reject on/off
Recovery Speed 20
Bottlecap Reject 10
Hot Rock Reject 10
Sweep Speed 8
Ground Filtering 3

Display
Visual Disc. OFF
Icons OFF
V.D.I. Sensitivity 80
D.C. Phase ON
Graph Averaging ON
Graph Accumulating ON
Fade Rate 6
Preamp Gain 3

2 Freq. Best Data OFF
2 Freq. Correlate OF
VDI Normalized ON
1 Freq. 3 kHz OFF
1 Freq. 15 kHz ON

I seek usually in the forest with a DC of 70- 78 and get nevertheless yet false Signals. Preamp 4 is almost impossible.
Now my question: What do I make incorrectly?

Thanks for all Answers

 

[ShawnP]

I am a dfx newbi, but if it is unstable, you can turn down your AC sens And OR the pre amp gain. For me its give and take, if I want a higher preamp I may have to lower my AC, or if i want high AC I may have to turn down my pre amp, until I find a good stable setting. Your pre amp of 3 might be fine, but for your area the ac sens of 75 may be High. In your last sentence you said DC sens of 70 - 80, I assume you meant AC? VDI sens is just a display setting. I would try posting your question in the DFX classroom forum, or at dfxonly those guys know 1000 x more than I. Good luck

Edit, I see you are using 15khz only, which from my reading is great for prospecting / finding small conductive stuff, lots of trash or even emi could be making it go crazy.