Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Charts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Metal Detectors
Minelab
Minelab GPX6000 release, general information and questions
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Prospecting Australia:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Alchemist" data-source="post: 612033" data-attributes="member: 21170"><p>On all previous PI DD configurations the TXand RX coils require such specific parameters you couldn't transmit on the RX. </p><p>For instance a typical Minelab DD TX coil will have an inductance of 300 micro Henries and a resistance of 350 milli Ohms, this means the wire will be pretty chunky having a cross sectional area of about 1.2 mm2.</p><p>The DD RX coil will have an inductance of about 450 micro Henries and a resistance of 6 Ohms, this makes the wire quite thin in comparison, with a cross sectional area of about 0.08 mm2.</p><p></p><p>There is no way you can combine these two coils and generate the required pulse, but you could theoretically combine them during the recieve period, the complexity of switching circuitry required would likely not be worth any gains.</p><p></p><p>I know JP likes to use the DD setting with a mono coil since there is less attenuation of the RX signal due to input switching topography, but I don't know how this stands with the 6k.</p><p></p><p>Cheers</p><p>Kev.</p></blockquote><p></p>
[QUOTE="Alchemist, post: 612033, member: 21170"] On all previous PI DD configurations the TXand RX coils require such specific parameters you couldn't transmit on the RX. For instance a typical Minelab DD TX coil will have an inductance of 300 micro Henries and a resistance of 350 milli Ohms, this means the wire will be pretty chunky having a cross sectional area of about 1.2 mm2. The DD RX coil will have an inductance of about 450 micro Henries and a resistance of 6 Ohms, this makes the wire quite thin in comparison, with a cross sectional area of about 0.08 mm2. There is no way you can combine these two coils and generate the required pulse, but you could theoretically combine them during the recieve period, the complexity of switching circuitry required would likely not be worth any gains. I know JP likes to use the DD setting with a mono coil since there is less attenuation of the RX signal due to input switching topography, but I don't know how this stands with the 6k. Cheers Kev. [/QUOTE]
Verification
Post reply
Metal Detectors
Minelab
Minelab GPX6000 release, general information and questions
Top