Can't relate to this thread. The E-Trac is very simple to set-up and easy to interpret.
Sensitivity Mode: Set to Auto +3. If there is iron falsing reduce to + 1 or even -1. To use manual mode, start high above 24 and reduce until iron falsing disappears. That isn't hard to do, is it?
Threshold Level: Set to a barely audible hum, around 14-15. That was easy too.
Volume Limit: Whatever you want, perhaps 27-28. There, another easy setting done.
Volume Gain: Increases weak deep signals to sound as strong as surface signals. Try around 20-25. Too high and you won't know if the signal is truly weak and deep as the audio stays strong, so don't go too high if you want to differentiate audio depth.
Response: Use "Normal" for good target separation in trashy areas. You can play with the others but it isn't necessary.
Tone ID No. of Tones: Use TTF in high ferrous/nulling areas (not good in non-ferrous trash areas). Use TTC in high non-ferrous trash areas (not good in ferrous trash areas). Avoid Mulit-tone until you learn the unit better.
Tone ID Variability: Use 25-27, widens range of tones between nails vs. coins for instance.
Tone ID Limits: Use 29-30, or whatever you want.
Threshold Pitch: Changes the threshold hum pitch. Set whatever you'd like, usually 5-10 will work.
Recovery Deep: Boosts weak signals. Just leave it ON and forget it.
Recover Fast: Turn ON in very trashy areas to truncate signal and improve target audio separation, otherwise leave it OFF.
Trash Density: In trashy areas set to HIGH (detects accepted targets better when next to rejected targets) or just leave on HIGH and forget it.
Ground: Generally, use DIFFICULT unless on the beach. If Auto Sens is below 22 the ground is bad and DIFFICULT is preferred.
Noise Cancel: After making settings run auto noise cancel. You can have coil in air or on ground to see which is selected. Really doesn't matter which noise cancel number is selected.
Pinpoint Mode: Use NORMAL.
Load a pattern such as Andy's Coin program. Leave QuickMask blank or reject below 27Fe. Once set you can turn on the detector, noise cancel, and just start hunting. It couldn't be easier. QuickMask just lets you see the cursor position and hear the audio (because nothing is disc'd out). You can hunt in QuickMask if you'd like - you can see and hear everything. It may be too much info in trashy areas. Deep iron will be below 27Fe - leave it. Iron will also wrap around to 01Fe - ignore it. Dig solid signals above 25Co and/or signals that fall around the 12Fe line (coins, pull-tabs, bottle caps, foil) until you can correctly guess the target's identity. Silver and dimes and quarters will be around 12Fe 40-50Co and pennies around 12Fe Co32-38, nickels around 12Fe-12Co (and pull-tabs), foil around 12Fe 01-05Co.
Yes, you have to spend some time digging targets, including deep nails that mimic good non-ferrous targets. You'll need to dig trash to know what it sound/looks like. You should be guessing mostly correctly after about 10 hours with the machine. If you want rings you'll need to dig the trash too (they often have low Co values). Jumpy TID reveals buried iron. A low grunt with clipped high audio (iron falsing) is something you'll need to recognize. Iron nails give a high tone but it is rarely a two-way signal, usually gives the low-grunt too. Dig some so you know how to pass them by.
You don't need to watch the screen - just listen for the high tone in TTF or TTC and check for a repeatable signal. Check the TID location - is it in a known location for good targets? If so, dig it. Is it near the bottom of the screen - probably iron.
With all the setting made, the pattern saved and loaded, the audio and TID understood - this is perhaps the easiest detector anyone could ever want. Swing it slow - wait for a high tone or TID in a known good area and dig. After 10 hours use you should be comfortable with it and after 40 hours you should become one with the machine. If you have a VCR with 12:00 still flashing and you can't figure out how to set it, you may want to look elsewhere, perhaps the Ace 250 that makes a bell tone when it's time to dig.