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發表人 peterso 發表於 2005-01-10, 16:49
XLR...balance 頭有兩種 pin assignment..小心 反相
http://www.vandenhul.com/artpap/cable_faq.htm#11-6
Q: I have seen that there are two ways to wire an XLR connector. Which method is the best ?
A: Dating back from the time when no standard on XLR connector pin designations was agreed upon, there has been a confusion as to whether the XLR connector’s pin 2 should be wired hot and pin 3 cold or the other way around.
The nowadays uniformly used EIA RS297a wiring standard for XLR connectors is: Pin 2 = signal +/hot/in-phase, pin 3 = signal –/cold/out-of-phase and pin 1 = ground. (For wiring diagrams please refer to our DIY wiring section).
Especially older audio equipment sometimes uses the reversed pin 2,3 signal designation, and when connected to modern XLR input devices the signal is phase inverted. When in doubt: The equipment’s manual often mentions the XLR pin configuration used. To get around such signal phase inversions you can either change the equipment’s internal XLR wiring or make a pin 2,3 crosswise wired XLR cable or change the polarity of your loudspeaker connections.
http://www.vandenhul.com/artpap/cable_faq.htm#11-6
Q: I have seen that there are two ways to wire an XLR connector. Which method is the best ?
A: Dating back from the time when no standard on XLR connector pin designations was agreed upon, there has been a confusion as to whether the XLR connector’s pin 2 should be wired hot and pin 3 cold or the other way around.
The nowadays uniformly used EIA RS297a wiring standard for XLR connectors is: Pin 2 = signal +/hot/in-phase, pin 3 = signal –/cold/out-of-phase and pin 1 = ground. (For wiring diagrams please refer to our DIY wiring section).
Especially older audio equipment sometimes uses the reversed pin 2,3 signal designation, and when connected to modern XLR input devices the signal is phase inverted. When in doubt: The equipment’s manual often mentions the XLR pin configuration used. To get around such signal phase inversions you can either change the equipment’s internal XLR wiring or make a pin 2,3 crosswise wired XLR cable or change the polarity of your loudspeaker connections.
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2004-11-16, 18:33
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