원문 게시자: Geoffrey Sabio ,
For my logitech mic headset, the TRRS scheme seems to be Tip - connects to the bottom lowest contact pin of the connector, Ring 1 - connects to the second lowest contact pin, Ring 2 - third contact from the bottom, Sleeve - highest contact on the top. The cable itself has 4 conductor wires: bare copper, blue, red, and white with a copper sleeve around it. Using a multimeter set to 200ohms, I found that by wearing the headset and connecting the bare copper to blue makes a popping sound in the right earcup of the headset. Connecting the bare copper and red together makes the left earcup pop. This means the bare copper wire is ground. The Red wire then, is the left channel, and Blue is the right channel and are each connected to the ground copper wire, “upstream” on the headset end at the speaker drivers. White is the mic and it’s copper sleeve around it is the mic ground. Now that I know where the TRRS connect to on the different pins of the connector itself, and I know which wires connect with which channel on the headset, I have to figure out the wiring scheme. I know there are CTIA and OMTP wiring standards. In both diagrams, the Tip should go with the Left channel, Ring 1 with Right channel. But the Mic and Ground pins differ in location depending on the wiring scheme. I’ll have to look up the diagrams and just try each one out to see which works with my mic cause Idk where my ground and mic wires go.