Hi Brian......
You can expect all the Sovs to work pretty much the same way, so here goes.......
You say the meter is going nutso..
If your battery is good (12V or better), then......
Check your setup....
Minimum disc and notch.
Threshold should be just audible at about mid range.
Mode switch to disc mode.
Volume max.
Sensitivity to auto or fully CLOCKWISE to minimum (backwards from other detectors).
At this point the threshold should be smooth.
The meter should be giving you a reading that is either solid, or intermittently bouncing up and down by a digit or two (depends on what meter you have, and how it's scaled.
If you are hearing a lot of noise and the meter is going nuts, then the most probable cause is severe electrical interference. There are places that are so bad that unplugging the coil and meter are the only way to stop it. (some days in my own front yard)
A note here...
The meter does not function for ID in the all metal mode.
It will bounce around depending on the strength of the target, but will try to center on about 124 with a 180 scaled meter, and about 384 on a 550 scaled meter when it is calibrated to a dime, quarter, or COPPER penny.
It will bounce around with a large negative number if the last object was iron.
Back to calibration....provided that it is running smooth...
Wave a dime over the coil a few times and look at the meter.
It should be fairly stable and should adjust with the knob on the back to a reading of 180 or 550 depending on the particular meter. You should also hear a high, steady tone in the threshold that approximately matches the tone you heard when you waved the coin.
If everything is working right, then you are ready to hunt. Would suggest you use auto sensitivity for a while, as manual can be tricky.
You can also find more info on Wildherre's "sovereignmods" website.
Good reading for any new Sov user.
A couple other notes...
The Sov is a motion detector in BOTH all metal and discriminate modes.
Your coil is going to be a DD type, and does not cover ground the way a concentric does.. This may cause you some trouble at first.
If electrical noise may be your problem, try a different spot.
See how this pans out, and let us know what you come up with.
The way things are going, Rick will probably be typing a post at the same time and you will get a double dose of info.
HH
Art