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565frontandrearaudio [2021/07/20 08:05]
pa1ap
565frontandrearaudio [2021/09/30 07:40] (current)
pa1ap [Connecting your audio gear to the rear din connector]
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 ==== Known issue rear din connector ==== ==== Known issue rear din connector ====
  
-Reported by Peter oz1pif and later confirmed by many others the rear din connector has a design error. The audio input pin also has a 5 volt dc voltage and when using an audio transformer you need to include a decoupling ​capacitor to avoid transformer saturation. ​+Reported by Peter oz1pif and later confirmed by many others the rear din connector has a design error. The audio input pin also has a 5 volt dc voltage and when using an audio transformer you need to include a coupling ​capacitor to avoid transformer saturation. ​
  
 ==== Transformer and ground shield ==== ==== Transformer and ground shield ====
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 Use a good quality audio cable with two wires which are isolated from but reside within a common shield. ​ Use a good quality audio cable with two wires which are isolated from but reside within a common shield. ​
  
-Taking above into account ​ all you need to ensure is that the body of the microphone is connected to the orion chassis by using the audio cable shield. The actuall mic and mic wires should reside within the cable shield and not use the cable shield as means to pass audio.+Taking above into account ​ all you need to ensure is that the body of the microphone is connected to the orion chassis by using the audio cable shield. The actuall mic and mic wires should reside within the cable shield and not use the cable shield as means to pass audio.
  
-At the Orion front panel ensure mic and mic are connected to pin 1 and pin 2. Last but not least connect the shield to the body of the plug.   ​Latter to ensure the shield becomes part of the Orion chassis. ​+At the Orion front panel ensure mic and mic are connected to pin 1 (+) and pin 2 (-). Last but not least connect the shield to the body of the plug.   ​Latter to ensure the shield becomes part of the Orion chassis. ​
  
 Optionally if PTT is also provided by the microphone ensure that the PTT wires resides outside the audio cable shield. ​ Optionally if PTT is also provided by the microphone ensure that the PTT wires resides outside the audio cable shield. ​
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 ==== Connecting your audio gear to the rear din connector ==== ==== Connecting your audio gear to the rear din connector ====
  
-One can use a audio transformer but this is not mandatory. ​ When using an audio transformer keep in mind the recommendation above. Include a decoupling ​capacitor as well ensure the audio shield is starting at the Orion chassis way up to the actuall microphone body. +One can use a audio transformer but this is not mandatory. ​ When using an audio transformer keep in mind the recommendation above. Include a coupling ​capacitor as well ensure the audio shield is starting at the Orion chassis way up to the actuall microphone body. 
  
 When connecting the rear connector directly to the microphone amplifier please ensure the amplifier can run in unbalanced mode. Some equipment recognizes balanced / unbalanced connection automatically and some require additional configuration. Furthermore just like all other configurations ensure the audio shield is starting at the orion chassis all the way up to the actual microphone body. When connecting the rear connector directly to the microphone amplifier please ensure the amplifier can run in unbalanced mode. Some equipment recognizes balanced / unbalanced connection automatically and some require additional configuration. Furthermore just like all other configurations ensure the audio shield is starting at the orion chassis all the way up to the actual microphone body.

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