V ground balancing

[sqwaby]

Not always, but sometimes when I ground bal aned lower the coil the audio threshold will increase as if bal pot needs to be turned counter clockwise. When it gets 1-2" from the ground the audio nulls(loss of audio threshold) but comes back to the original threshold setting when the coil is on the ground as it should when the bal it correctly set. Most times when GB is set it stays at the same audio level while being lowered to the ground without any null. What causes this difference.

 

[dahut]

... you got me. Will be watching this one.

 

[JB(MS)]

If the threshold nulls when the coil nears the ground that means it's ground balanced negative, and the reason the threshold returns to an audible level is because the autotune resets it. The Vaquaro has a really fast auto tune in all metal mode, and regardless of whether you ground balance positive or negative the autotune will reset the threshold to the level you have it set at within a second or so.

 

[dahut]

The Vaquaro has a really fast auto tune in all metal mode, and regardless of whether you ground balance positive or negative the autotune will reset the threshold to the level you have it set at within a second or so.

That makes sense. It's also part of why I dislike pinpointing with the Vaquero - it re-tunes too fast!

 

[tabdog]

n/t

 

[Scully]

Takes a little to get used to but once you do it becomes second nature. As long as you keep the coil moving (but not as slow as a snail) your machine will not retune.

 

[sqwaby]

I'm with tabdog, I've never found a need to pinpoint in AM. Just X the target in disc. Works every time, center of coil.

 

[dahut]

... there is littel problem pinpoiting with the Tesoros in DISC. I prhased that wrong.

There are situations where I like an AM mode that doesn't retune so fast, like when working in an iron infested site.
What I crave is a straight up non-motion, AM mode. I don't get that with the V.

Why do they give it such a fast retune?