XLD Keyed Variant
The XLD connector is a keyed variant of the XLR connector. The keys prevent accidental mixing of XLR and XLD connectors. XLD plugs and sockets are used mostly in professional audio and video electronics cabling applications.
The XLD connector is used with the Audio Engineering Society AES42 digital microphone interface standard.
The connectors are similar to XLR but with an extra coding key and groove that allows control over the intermating of XLD plugs and XLR sockets. A connector with the coding key installed will not mate with a connector that does not have the matching groove. By suitably keying connectors, analog microphones can be protected from damage by the high current digital phantom power supply provided for digital microphones.
Read more about this topic: XLR Connector
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