Deepstar Sensitivity knob

[Anonymous]

Bill or Eric, can you comment on how the sensitivity knob varies detection depth and senstivity? For example, if I reduce the pulse delay there's a significant loss of depth on small items. I'm wondering how backing off on the sensitivity knob might affect depth and sensitivity? The reason I ask is that I find that I need to cut sensitivity back to about 75% of full to get a useful threshold without falsing constantly. Is this normal and should I not be attempting to run the thing at max sensitivity? Seems like before I used to be able to do so but it's been a month or two since I've been out with it and had a bugger of a time trying to get things working in my head again <IMG SRC="/forums/images/smile.gif" BORDER=0 ALT="">
Thanks!
-J

 

[Anonymous]

Hi Jeff,
The sensitivity knob varies the amplification of the receiver, whilst the pulse delay alters the sampling point while keeping the amplification the same. Cutting back the sensitivity will reduce range on all objects uniformly while giving a smoother threshold and reduce falsing. How much sensitivity you use will depend on several factors such as local electromagnetic noise, ground mineralisation both conductive and magnetic etc. In electromagnetically quiet conditions and non-magnetic sand you can wind things up to maximum, but in less ideal situations you may well have to reduce the sensitivity a bit. At 75% of maximum sensitivity you will lose only about 10% of your maximum possible detection range.
Eric.

 

[Anonymous]

Thanks Eric, you answered exactly what I was looking for!