Newbies 1st V3i Question

[diggin jimmy hoffa]

Hey all,

Just got the V3i and took it out in the yard just to see what and how she works and feels.

I'm not new to detecting, as I had the E-Trac prior to making the switch so I think that I can tame this beast with a little patience and time under my belt.

While out in the yard, I placed a Sac. $ and a Nickle approximately 1 foot apart. When swinging the coil over the Nickle to the Sac. I would get the 2 beeps. 1 for each of the coins, but on the return swing, I would only get the beep for the Sac.

I didn't make any adjustments to the machine and was using the stock C&J pattern.

So the question I have is, Any ideas on why this would happen and what adjustment I may have to make?

Again this was straight out of the box and I'm sure there is going to be some tweaking going on.

Thanks
DJH

 

[Larry (IL)]

Lower the recovery delay setting to speed up the recovery at the expense of losing some depth on deep targets. The best solution for separation of close targets is to use a smaller coil.

 

[Aurium]

Sometimes it depends on the speed of your swing, and the recovery of the machine. Keep in mind that the V3 is a computer, it has to process the information
if you swing to fast, it doesn't have time to process the data and "beep". So close targets when swung over fast with a slow recovery speed will tend to beep once rather than for each target. It is a learning process to figure out what is your optimal swing speed, and there are adjustments on the machine that change
how fast the machine recovers. (I'll leave that topic for others to discuss)

Hope you're enjoying the new toy however..it's a fun hobby.

 

[diggin jimmy hoffa]

Thanks for the replies Larry & Aurium.

Will be learning more as time goes by. Just thought it weird that I would get 2 responses on the swing from the left, but only the one response when returning back over the 2 coins.

As a side not, I'm not even going to compare to the E-Trac and have thrown all that I have learned about that machine to the side, as I know that these are 2 different machines and I have entered a new learning curve as well.

HH
DJH

 

[Hunt4Fun]

A few years ago while doing some program testing I noticed exactly what you are describing. There seemed to be more recovery delay when swinging from one direction than from the other direction.. A few days later while doing more testing, the delay difference disappeared. After some head scratching, I realized I had been using a DD coil during the first testing and a concentric coil during the second round of testing.

I will leave it to an electronic tech or engineer to explain this apparent performance difference between the coil designs. I came to the non-technician conclusion that the difference may be because a DD has the transmit winding on one side of the coil and the receive winding on the other side. My understanding is that each side of a concentric coil is just about a mirror image of the other side.

I own 4 DD coils and they all have this apparent RD difference. In the small coils the delay difference is VERY small. As the width of a DD coil increases, the apparent delay difference also seems to increase. Again, I cannot explain it but it is there.

I do not believe this is unique to the V3. I have noticed this same thing when using DD coils on 3 different detectors.

HH Bob

 

[gilfordberry]

....and maybe target size has something to do with it. Curious - if you reversed the positions of the two coins would the result still be the same? What if you used two identical coins?