Base Threshold

[Rob (IL)]

Here is a list of the settings you can change to adjust the Spectragraph. Do you understand what these settings do? I want to talk about one of them, Base Threshold.

[attachment 257772 SpecragraphSettings.jpg]

Notice that except for Hi Pro (65) all are set to 90.

If you have a base threshold set to 90, it will read off the strongest signal and display the top 10% of that signal as well as signals that are greater than 90% of the strongest signal. Any deep targets that are less than 90% of the strongest signal will not be displayed on the spectragraph. However for a setting of 65, the deeper targets need to be only greater than 65% of the strongest signal to show on the spectragraph. The BT set to 65 (like in Hi-Pro) is set to show more iron scatter effects. Setting it to 90 you don't see near the scatter so a nail might appear as a good target under the right conditions. If you don't want to see as much of the surrounding noise, you increase the base threshold. To catch the deeper targets relative to your strongest signal, lower your base threshold. BT is the vertical resolution control.

 

[MANDAD76]

Good info....don't remember reading that anywhere...need to play/experiment to find my happy place. thx for postin!

 

[oneon]

I have tested this and seem to be getting a lot of smearing on the spectragraph and picked up more noise. I am looking forward to testing this on clean beach.
Thanks Rob for making me more aware. Sometimes one post can open your eyes!

 

[burlbark]

And here I thought I knew everything about this amazing detector.

Thanks Rob, I now have to go and hunt all of my ground like its new again.

 

[Rob (IL)]

Yes you will get more smearing because you are seeing more weak signals from all those tiny bits and pieces. The high pro runs 65 for the base threshold,if you move it up to 70 it clean up a little because you eliminated 5% more of the tiny signals. The C/J runs 90 so the screen will look cleaner because you just eliminated the tiny signals in the 65 to 90 range when comparing to the Hi Pro.

Again use the setting to get the amount of information you need for your style of detecting.
[attachment 266080 greatday.jpg]

 

[Ytcoinshooter]

Excellent! Thanks Rob! Every little bit of understanding the interrelationships of the settings helps me set it up to my advantage.

 

[yazoo]

I run mine at 70. Yazoo

 

[GroundScanner]

Were would i change this setting under?

 

[Rob (IL)]

Check the chart, configure, intensity, base threshold. This is from the V3 manual and shows all the settings in all the factory programs

Notice all the other programs are at 90. Be careful to not make the screen too busy for your needs. I mentioned it because there were so many questions about the Magic program which is Hi Pro based.

 

[GroundScanner]

TY Rob , i use a mod. CJ program. So i figured i would try it.

 

[Larry (IL)]

Page 56 of the owners manual tells you what you want to know. The online manual is very handy because it has the search feature. Just type Base Threshold in the search field and bingo, there it is.

http://media.whiteselectronics.com/manuals/V3%20Manuals/Spectra%20V3i%20Instruction%20Manual.pdf

 

[johnedoe]

After looking through all the possible adjustments we are able to make and how these different features interrelate I sometimes wonder how a regular old detector finds anything......

When I turn on and go with my MXT it just GOES.... when I turn on my V3i I wonder if I'm getting it all.....

I love my V and am continuing to learn about it and now I am seeing the true potential in that even as powerful as the MXT is the V will smoke it when you really understand and tune accoring to the area being searched.

The V is an amazing machine.

 

[gldfver]

Thanks Rob. I just went outside to try it out and it sure makes a difference in Hi-Pro. This might be my new go to program
I found 70-80 was much more stable here in my soil.
Can't wait to tri it in my test garden tomorrow.
This is some GREAT INFO....