> For the complete documentation index, see [llms.txt](https://docs.ceruleansonar.com/c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ceruleansonar.com/c/rov-locator/rovl-coordinate-systems-and-angles/transducer-down-orientation.md).

# Transducer Down Orientation

"Transducer down" should be the orientation of the receiver/transceiver if it is topside, or the orientation of the transmitter/transponder if it is topside.

![Mk III Transceiver in "transducer down" orientation](/files/AmVCCKTomRKaJCppLDBg)

![Mk III Transponder or Mk II transmitter or Mk II receiver in "transducer down" orientation](/files/C7RNNXNS1bfZE2x4ukYk)