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#1
11-10-2017, 05:53 PM
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Okay, let's try a different approach. There are two components to a received signal--the reactive and the resistive. The reactive component is the reflection part and it happens at the exact same time as the transmitted signal. It appears the claims are the TRN and TV can somehow eliminate this reactive reflection by doing something to the transmitted signal. And this is what puzzles me.
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#2
11-10-2017, 08:23 PM
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Mike, talking about LRL with rods, you have to think diferent. It is a known problem for decades, with several names and also several approaches to solve it.
In a LRL with rod's, the problem is the "human receiver" : very unreliable. If you manage to change the sensitivity of the user/receiver, then you will see that the signal line between generator and target, will also change. Humans responde to the rate of change, rather to the absolute maximum value of this strange field. Note that the dynamic range differs from user to user, as also the minimum/ maximum rate of change, that a human receiver can see. So, in the case of an "old" massive target, we talking about an endlles chaos of local minima/maxima at wich usually a human receiver respond. There are some (partially) solutions wich work well enough, if you deal will relative small /medium targets.
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#3
11-10-2017, 08:54 PM
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Yes, I kinda think they are trying to compare an LRL response to a metal detector response. But the metal detector received signal has been processed to remove parts of the signal like with ground balancing. Of course the L-rods can't do that. So somehow the LRL transmitted signal is altered to "nullify" this?
I am trying to get spectrum lab working again. I messed up and got all excited and reset everything back to factory. Now I can't get it to work very good. Especially the frequency span. It's because the external microphone i am using is a 24 bit 96000 Hz. If anyone knows how to configure the Spectrum Lab to this microphone I would appreciate any help. This external sound card is SD-AUD20101
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#4
11-10-2017, 10:00 PM
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Made some progress with the Spectrum Lab, but something is still not working right. Will have to do more checking.
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Hybrid Mode
