View source for DANS Troubleshooting

==Common Commissioning Problems==

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    <td style='border:1px solid; font-weight:bold'>Problem</td>
    <td style='border:1px solid; text-align:center;font-weight:bold'>Potential Reason for Issue</td>
    <td style='border:1px solid; text-align:center;font-weight:bold'>Resolution Steps</td>
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    <td style='border:1px solid'>Unstable attenuated DANS01 output level</td>
    <td style='border:1px solid;text-align:left;'>

1.The DANS01 sensor(s) may be detecting audio from its own output and / or adjacent outputs and interpreting this as noise.

2.The nature of the background noise may cause instability. 

3.Possibly the output level (maximum broadcast level) has been increased on one or more
outputs after DANS commissioning. 

4.If it is still not possible to commission DANS01 to a satisfactory behaviour.
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    <td style='border:1px solid; text-align:left;'>

Potential Resolution Steps for First Reason:
#Mute the DANS01 controlled output and all adjacent outputs.
#Trigger an ANS enabled announcement to the DANS01 output.
#Trigger an ANS disabled announcement to all adjacent zones.
#Unmute the DANS01 output.
#Confirm the audio has minimal or no effect on the DANS01 output “Gain” meter.
#If it is greatly affected, increase the “Output” setting in 1 dB steps until it stops.
#Mute the DANS01 output.
#Unmute the first adjacent output.
#Confirm the audio has minimal or no effect on the DANS01 output “Gain” meter.
#If it is greatly affected, increase the “Adjacent 1” setting in 1 dB steps until it stops.
#Mute this adjacent output.
#Repeat from step 8 above for all remaining adjacent outputs.
*If it is not possible to get one or more outputs to have minimal or no effect on the “Gain” meter, repeat from step i. but try to get the DANS01 behaviour as stable as possible.

Potential Resolution Steps for Second Reason:

*Increase both “Attack” and “Release” in 25 ms steps until it is stable.
**Note that this may slow down the DANS01 reaction speed when there is a large change in background noise. If it is still not possible to get one or more outputs stable, reduce the attack and release back to satisfactory reaction speeds.

Potential Resolution Steps for Third Reason:

*DANS01 will require commissioning again.

Fourth Potential Resolution Step:
*Set the “DANS Type” to “Gap”. This will stop output level adjustments whilst audio is present on the DANS01 output.
*The “Attack” and “Release” settings determine the output level adjustment speed. Short “Attack” and “Release” will result in the output level changing between words in an announcement. Longer “Attack” and “Release” requires a longer pause in audio before the output level is adjusted.
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  </tr>
<tr>
    <td style='border:1px solid'>Not possible to get full range attenuation even at the lowest background noise level. i.e. the “Gain” meter never matches the “Range” setting.</td>
    <td style='border:1px solid; text-align:left;'>
1.This may occur when the background ambient noise level is greater than <Max Noise Threshold> - <Range>.

2.Possibly the output level (maximum broadcast level) has been lowered on one or more outputs after DANS commissioning.
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    <td style='border:1px solid; text-align:left;'>

Potential Resolution Steps for First Reason:

#Reduce the DANS01 sensor(s) input level by 10 dB.
#Reduce the Max Noise Threshold by 10 dB.
#Recommission the “Output” and “Adjacent” faders. 
#This will give an extra 10 dB headroom for the DANS01 attenuation.

Potential Resolution Steps for Second Reason:

*DANS01 will require commissioning again. Specifically: DANS01 Output Commissioning and Adjacent Output Commissioning.
</td>
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    <td style='border:1px solid'>IPxx AUDIO INPUT reported on DANS01 connected inputs</td>
    <td style='border:1px solid; text-align:left;'>

Input Surveillance Not Commissioned Correctly

Please note: 
*This will cause all outputs controlled by this sensor to output at full volume regardless of the current route’s “ANS” setting.
*If an output is controlled by multiple DANS01 sensors, a fault on one (or more) sensor will cause the output to go to full volume.
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    <td style='border:1px solid;text-align:left;'>
Potential Resolution Steps for First Reason:
#Check the connection between DANS01 and the audio router.
#Recommission the audio input.
</td>
</table>

<table style='width:100%;'>
  <tr style='background-color:#ffd400'>
    <td style='border:1px solid; font-weight:bold'>Known Issues</td>
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    <td style='border:1px solid'>Performance may be less accurate during noise levels greatly different to the noise level at which it was commissioned.</td>
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    <td style='border:1px solid'>Output “delay” setting is incompatible with DANS01.</td>
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    <td style='border:1px solid'>DANS01 sensors cannot control outputs that are on a different audio router, including DBB</td>
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</table>

[[Category: Zenitel PAVA]]