Strange Noise in Centre of Dash

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Re: Strange Noise in Centre of Dash

Postby tom_kauf » Tue Jul 18, 2017 11:48 am

Hehe, it actually has that pointed metal rod (can be seen in the picture), that goes onto the end of the Microphone Stalk. Works very much like a screwdriver, except a bit more high-tech. I haven't used it, but it'd be perfect for finding engine noises while stationary.

I'll check later today what voltage this thing puts out. It just uses a 3.5mm Mono connector. The volume is adjustable, via a scroll wheel. So even if it amplifies up to the supply voltage (a 9V block battery), you could carefully set the volume to be at 5V Max.
The Tactrix has a 2.5mm Audio Input Jack for logging. That's an analogue input isn't it? It then converts to digital levels iirc. Would that work for what you need?
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Re: Strange Noise in Centre of Dash

Postby bigBADbenny » Wed Jul 19, 2017 7:37 am

Brilliant! Completely forgot about that tactrix feature: standalone mSD logging :good:
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Re: Strange Noise in Centre of Dash

Postby tom_kauf » Wed Jul 19, 2017 8:10 am

Glad I could help :D

I checked my Noise detection kit, and I get 2V at Max volume with no DC offset, with the loudest noised (hitting the end hard). But that's at one of the earpieces which I removed, and to be honest I didn't check if they're in parallel or series with each other. So either it's 2V or 4V Max all up.
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Re: Strange Noise in Centre of Dash

Postby bigBADbenny » Wed Jul 19, 2017 8:21 am

Thanks for the clarification.
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