Ground Balance Issue With My T2 SE

[Valley Ranger]

I've had a T2 SE for almost 2 years now and have developed a love/hate relationship with it. I also own a Fisher 1266X, a White's MXT Pro, and a Garrett AT Pro. The last 3 were relatively easy for me to master - the T2, not so much, though I'm not quite ready to give up on it. But one thing that has now happened to me twice is a message I've gotten when attempting to GB: "Can't GB."

The first time this occurred was in eastern NC over sandy/loamy soil. The 2nd time was yesterday over very rocky limestone ground here in Virginia's Shenandoah Valley. Even several reboots of the unit didn't help. I could not ground balance the unit either time until I got completely off that particular piece of ground and moved to a different ground type. 2 questions:

1. Has anyone else experienced this?
2. What's the issue here?

Thanks!
RGW

 

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[woof!]

There are soils the signals from which a computer-assisted ground balancing system has difficulty making sense out of, and when it runs into those it displays "CAN'T GB" or words to that effect.

I've been collecting data on the electromagnetic properties of soils for about 30 years now. That's why I put limitations in what automated or semi-automated ground balancing systems are allowed to do.

Your description of the ground conditions under which you ran into difficulty meshes very well with our data. In fact, it's more data for our archive, I'll email our engineering department geophysicist a link to your post. Thank you!

The human brain can often figure out things that a computer can't. When the T2 says "can't GC", just switch to all metals mode and ground balance manually. That will solve the problem nearly every time.

--Dave J.

 

[Valley Ranger]

Thanks Dave. So I would assume by your comment that there's really nothing wrong with the unit or the coil? I've just never run into this with the other units, at least not to my knowledge.