How to verify SMA pcb connector ?

Updated on April 7, 2017 in ECE
0 on April 7, 2017

Hi All,

I am not an EE, and honestly as far as I got is Ohm’s Law. However, I am having problems with a RF signal either not being properly transmitted or received, and I want to see if there is a way to check connectors with a multimeter?

I have two mini SMA connectors – one soldered on a pcb board and one on a transducer, both part of a (metal chassis) machine to transmit energy out of the transducer. They are connected by a coaxial cable.

I believe the problem may be with how the pcb SMA is soldered, or at the transducer SMA.

With the coxial cable removed, I have electrical contact between both SMA bodies, which makes sense given the machine is metal. But what about center conductor to center conductor? I am getting electrical contact there as well. It doesn’t seem right to me, but I admit I don’t RF transmission.

Any help is greatly appreciated.

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