VCO

[rick in mi]

Alright I have searched through the posts but still cant come up with a satisfied answer to what VCO means.I know it sounds stupid,but can someone explain this?? (Monte you seem well versed in this area) And in what function or process does it apply?? .......hh rick in mi.

 

[rockpup1]

Is that not the Loudness of the audio helping you indicate depth of a target.Louder the sound the closer the target to the surface?

Machines such as a bounty hunter have a built in circuit that amplifies even faint sounds so they all have the same loudness....

That kinda what I think it is...hard to explain.

It be nice to hear a definate answer to the question,I have a idea of what it is but not sure either.

 

[silverskidmarks]

this means (voltage controlled oscillator) VCO has 2 purposes...when a target is close to surface..the sound will have a higher pitch and a louder audio...deeper targets will have a lower pitch and quieter audio...hope this helps....

 

[rick in mi]

Thanx rockpup1,silver,that sheds a little more light on the subject.,but am still not sure if my GBSE has this feature....hh rick in mi.

 

[Monte]

Alright I have searched through the posts but still cant come up with a satisfied answer to what VCO means. I know it sounds stupid,but can someone explain this?? (Monte you seem well versed in this area) ..... but am still not sure if my GBSE has this feature....

If you have the F-75 in your personal comments box, just grab a coin and check this out. Use the Discriminate mode and select 1 Tone, wave the coin over the coil at 8", then 6", then 4" then 2" and listen.

Next, select the 1F Tone ID option and do the same. At a greater depth (distance) you might not notice the VCO function, but as the coin gets close to the search coil you will hear it, especially when quite close. The loudness of a response from a close target will get weaker with distance due to a modulated audio. But the VCO component is in addition to the loudness on closer targets as you hear a pitch change, or the audio can quickly peak to a squeal. I hope the below cut-and-pasted from the F-75 manual helps.

Monte

1: SINGLE MEDIUM PITCH TONE.
All types of metal induce the same tone.


1F: MEDIUM-TO-HIGH PITCH TONE
Varying in proportion to target signal strength.

Large shallow objects will produce a squeal. The variable audio pitch provides you more
information about the detected object, but some people find the sound on strong signals
too annoying.

Just realize it is a pitch change and not simply loudness.

 

[Dan-Pa.]

Its just a pinpoint tool that give you modulated audio(shallow loud-deep soft) many prefer it as it really helps in pinpointing especially a newbie as the voltage control oscillator get loudest when right over target. I myself prefer regular pinpointing and it gives you more of an idea of the size of the target and more audio info and prefer units that give you the choice of either as many
oldtimers prefer regular pinpointing as a learned detectorist can pinpoint well either way but get more info without the VCO. Imagine any manual will tell you how to pinpoint and if the unit does or does not have VCO or perhaps has the choice of either.

 

[Monte]

functional in the Discriminate made and not just All Metal. Usually, I like a good VCO audio, but I am also a bit picky. The CZ's I had were good units, but I didn't like how quickly the VCO audio would peak, preferring the White's XLT VCO audio because I had control over it with the sensitivity level and it would rise more comfortably. I am referring to use in the Pinpoint operation.

I will say, however, that the way it works in some of the T2 and G2 and other models I use, it works okay. I do wish I could control it so it didn't top out so briskly, especially in All Metal pinpointing, but I can live with it due to the rest of the good versatile performance they have in the Discriminate mode. The VCO in Disc. that's available out there usually is heard mainly on the shallower targets within 3 inches or so, letting deeper targets produce a more modulated response w/o any abrupt VCO added.

Monte

 

[Dan-Pa.]

Wish I had a toggle to have either for pinpointing on my CZ5...of course indeed my XLT excells with standard , VCO and ratchet pinpointing and can be controlled with DC settings and a multitude of settings all in one unit..

 

[rick in mi]

what I was looking for a good in depth explanation on this subject,even using other machines as examples,I have a good understanding of VCO now(am a little slow) I tried your suggestion Monte with my F75 and its right there I just never realized what this change in pitch or sound was technically called.And yes the F75 manual does refer to this,been so long since I looked at the manual I had forgotten,thanx allot you guys...hh rick in mi.

 

[davef99]

Its designed to give more higher pitched audio, the closer the object gets to the coil..

Personally I prefer a NON VCO ALL METAL PINPOINT, WITH ***MAXIMUM D.C.(DIRECT CURRENT)*** THAN VCO!

A TRUE ALL METAL PINPOINT can not only quickly locate a target,but also help "shape" a target!!


Why do companies keep getting rid of ***better/older technology***,for newer CRAP???????

 

[sgoss66]

davef99 --

While I can understand your perspective, for someone like me who is not as experienced, and is used to having ONLY the VCO pinpoint, I am able to "shape" a target, and locate one quickly, similar to what you said about non-VCO pinpoint. I think it's just what you get used to, and what your personal preference is. In my opinion, though, I would not call VCO "crap," and older technology "better." If you get used to VCO, and that's all you know (like me), it seems to work just fine.

Just my opinions, though! I appreciate yours, as well!

Steve