Hi All, Checking into getting a V3i and had a question about the Polar Plot Vector Screens. Are these based on Lissajous Figures (Bowditch curves) referenced to Impedance properties of metallic targets? I'm vaguely familiar with this application. Are the vector variables extracted from the All metal circuit , Disc. circuit or both? Does the Target Analyze function work in All Metal? I have been reading about NDT eddy current testing and wondered why modern detectors didn't have this capability. Saw the Whites website about the new software in the V3i and was pleasantly surprised. Now I want to try one.
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Question about Polar Plot Vector Screen
- Thread starter Adam(Va)
- Start date
Neil in West Jersey
New member
Adam(Va) said:
Hi, I am not an engineer, but I bet if you called White's they can answer part 1 of your question. I am guessing that the vector variables are from the Discriminate channel, as that is the channel that gauges the VDI numbers and target strength. The Analyze feature is accessed through the toggle, so it is set to work in Discriminate mode only.
Rob in (Ca)
Active member
I just run the single 22.5 Frequency, And like the polar plot so much that I now have it as my main search screen, If the Polar plot lines are strait and even I Dig, If the lines are round or curvy, keep walking.... it's iron and it seems to be very accurate.
Neil in West Jersey
New member
I might think twice about ignoring those curvy lines. I have noticed many good targets such as buttons and deep coins will have curvy lines. My guess is also that irregularly shaped jewelry or jewelry made with other alloys (I found the sterling silver pendent pictured with an 18K gold loop) will have curved lines as well.
Larry (IL)
Well-known member
People will develop their own hunting styles for many reasons and using the Vector screen as a reliability tool is fine, but for the reasons Neil gave, you will miss many very nice finds. Once in a great while I will flip over to the Analyze screen, but for me the Audio, VDI and Pinpoint data is all I need to make a decision to not dig. Yes, you read that right. If I get a good audio response I will look at the VDI's and then the pinpoint screen for reasons to NOT dig that target. Sometimes it is clear cut junk, like when the VDI does not match up to the dominate frequency, but if all indicators say a "maybe", I will dig. The 7" deep 1871 Seated dime found earlier this week is a good example. A questionable audio signal, VDI's jumping around and no dominate frequency bar. (all were equal)