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Difference between revisions of "ENA2060 Amplifier - Speaker Line Monitoring"

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The [[ENA2060-DC1_Amplifier|'''ENA2060''']] amplifier has the option to monitor each speaker line to detect line faults such as '''Open''', '''Shorted''' or '''Ground Fault'''. <br>
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The '''[[ENA2060 Amplifier|ENA2060]]''' amplifier has the option to monitor each speaker line to detect line faults such as '''Open''', '''Shorted''' or '''Ground Fault'''. <br>
 
To configure Speaker Line Monitoring:
 
To configure Speaker Line Monitoring:
* Select '''Amplifier Settings''' > '''Line Control'''
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[[File:ENA2060 line control.png|thumb|left|500px|Line Control]]
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*Select '''Amplifier Settings''' > '''Line Control'''
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[[File:ENA2060 Line Monitoring.jpg|alt=|left|thumb|503x503px|Line Control]]
 
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The calibration values are used as a reference and are compared with later speaker line measurements for any significant changes that will cause line fault reporting. <br>
 
The calibration values are used as a reference and are compared with later speaker line measurements for any significant changes that will cause line fault reporting. <br>
 
After the calibration, the speaker line load must not be changed, or else false fault messages may be reported.
 
After the calibration, the speaker line load must not be changed, or else false fault messages may be reported.
 
  
 
'''Channel 1'''/'''Channel 2''' options:
 
'''Channel 1'''/'''Channel 2''' options:
* '''Channel Enabled''' will disable/enable selected channel, this shutdowns/starts channel amplifier.
 
* '''Master Volume''' in dB changes channel volume for digital audio
 
* '''Monitor Mode''' can be '''Disabled''', '''Manual''' for manual monitor triggering and '''Continuous''' for continuous monitoring
 
** To get access to monitoring configuration options, either type of monitoring has to be enabled
 
 
'''Line In''' options:
 
* '''Line In Type''' selects which input is used for audio input: '''Line Input''' or '''Microphone'''.
 
* '''Impedance''' changes line in impedance. Options are "600 Ohms" or "High".
 
* '''Gain''' changes line in gain (0 - 47 dB)
 
* '''Phantom Microphone''' (only available when Line In Type is '''Microphone Input''') enables phantom power for microphone
 
 
<br>
 
 
 
 
 
 
 
 
 
  
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*'''Channel Enabled''' will disable/enable selected channel, this shutdowns/starts channel amplifier.
 +
*'''Master Volume''' in dB changes channel volume for digital audio
 +
*'''Monitor Mode''' can be '''Disabled''', '''Manual''' for manual monitor triggering and '''Continuous''' for continuous monitoring
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**To get access to monitoring configuration options, either type of monitoring has to be enabled
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**In Manual Monitoring mode, the status of the line must be manually checked
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**In Continuous Monitoring mode, the status of the line is checked every 60 minutes. This includes changing status from ok to fault and from fault to ok.
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*'''Line Monitoring''' Speaker Line monitoring Enable/Disable.
  
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To calibrate a speaker line:
  
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#Select '''Monitor Mode''' either '''Continuous''' or '''Manual'''
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#Enable '''Line Monitoring'''
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#Click the '''Calibrate''' button
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#Ensure the Calibrated status is displaying calibrated.  Unknown, Short or Open status will not allow the speaker monitoring to start.
  
  
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'''Line In''' options:
  
 +
*'''Line In Type''' selects which input is used for audio input: '''Line Input''' or '''Microphone'''.
 +
*'''Impedance''' changes line in impedance. Options are "600 Ohms" or "High".
 +
*'''Gain''' changes line in gain (0 - 47 dB)
 +
*'''Phantom Microphone''' (only available when Line In Type is '''Microphone Input''') enables phantom power for microphone
  
 
 
 
 
 
 
* '''Calibrate:''' Click to start the speaker line calibration sequence. The Channel must be ON (Enable must be clicked) and a proper line load must be attached.
 
* '''Measure:''' Click to start a manual SLM measurement. The line state must be calibrated as '''ok''' and '''Set Manual''' must be clicked.
 
* '''Reset Calibration:''' Click to clear the calibrated state (state='''uncalibrated''') and remove any line fault related '''System Messages'''.
 
 
=== SLM Mode ===
 
* '''Set Continuous:''' Click to monitor the speaker line once every xx minutes and report any fault detected.
 
* '''Set Manual:''' Click to have an operator/technician manually execute an SLM operation by clicking the '''Measure''' button. The manual operation may take up to 15 seconds.
 
For either SLM mode used, the status and timestamp for the latest measurement will be shown in the '''Measured''' column and any faults will be visible in the '''System Messages''' section. <br>
 
Any faults reported will be removed if subsequent SLM measurements result in an '''ok''' state or if the '''Reset Calibration''' button is clicked.
 
 
=== Channel: ===
 
* '''Disable:''' Click to switch OFF the amplifier output for that channel.
 
* '''Enable:''' Click to switch ON the amplifier output for that channel.
 
 
To calibrate a speaker line:
 
# Click the '''Enable''' button to switch ON amplifier output
 
# Click either '''Set Continuous''' or '''Set Manual''' button
 
# Click the '''Calibrate''' button
 
Wait for the calibration state to be updated (approx. 5-10 seconds). <br>
 
'''State''' will report either '''ok, open, shorted''' or '''ground fault'''. <br>
 
If the state is '''ok''' the amplifier’s Speaker Line Monitoring (SLM) feature is ready to operate. <br>
 
If the state is either '''open, shorted''' or '''ground fault''', the line must be corrected and the calibration procedure must be repeated.
 
  
 
The four benchmarks for the evaluation of line state is Voltage, Current, Phase and Ground Fault.  
 
The four benchmarks for the evaluation of line state is Voltage, Current, Phase and Ground Fault.  
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{| border="1"
 
{| border="1"
| align="center" width="120pt"| || align="left" | '''Calibration OK''' || align="left"| '''Shorted @ENA'''|| align="left"| '''Shorted @100M''' || align="left"| '''Open @ENA''' || align="left"| '''Open @100M''' || align="left"| '''Ground Fault'''
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| width="120pt" align="center" | || align="left" |'''Calibration OK'''|| align="left" |'''Shorted @ENA'''|| align="left" |'''Shorted @100M'''|| align="left" |'''Open @ENA'''|| align="left" |'''Open @100M'''|| align="left" |'''Ground Fault'''
 
|-
 
|-
| align="center" style="background:#ffd400;" width="120pt"| Voltage || align="left" | 985 || align="left"| 403 || align="left"| 403 || align="left"| 780 || align="left"| 1015 || align="left"| 400..1500
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| style="background:#ffd400;" width="120pt" align="center" |Voltage|| align="left" |985|| align="left" |403|| align="left" |403|| align="left" |780|| align="left" |1015|| align="left" |400..1500
 
|-
 
|-
| align="center" style="background:#ffd400;" width="120pt"| Current || align="left" | 1045 || align="left"| 1370 || align="left"| 1365 || align="left"| 435 || align="left"| 1065 || align="left"| 400..1500
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| style="background:#ffd400;" width="120pt" align="center" |Current|| align="left" |1045|| align="left" |1370|| align="left" |1365|| align="left" |435|| align="left" |1065|| align="left" |400..1500
 
|-
 
|-
| align="center" style="background:#ffd400;" width="120pt"| Phase || align="left" | 1075 || align="left"| 765 || align="left"| 925 || align="left"| 1545 || align="left"| 975 || align="left"| 400..1500
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| style="background:#ffd400;" width="120pt" align="center" |Phase|| align="left" |1075|| align="left" |765|| align="left" |925|| align="left" |1545|| align="left" |975|| align="left" |400..1500
 
|-
 
|-
| align="center" style="background:#ffd400;" width="120pt"| Ground Fault || align="left" | 405 || align="left"| 405 || align="left"| 405 || align="left"| 405 || align="left"| 405 || align="left"| 1580
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| style="background:#ffd400;" width="120pt" align="center" |Ground Fault|| align="left" |405|| align="left" |405|| align="left" |405|| align="left" |405|| align="left" |405|| align="left" |1580
 
|-
 
|-
 
|}
 
|}

Latest revision as of 00:59, 6 November 2020

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The ENA2060 amplifier has the option to monitor each speaker line to detect line faults such as Open, Shorted or Ground Fault.
To configure Speaker Line Monitoring:

  • Select Amplifier Settings > Line Control
Line Control


After the speaker line is set up with all the speakers and the line is properly connected to the amplifier, the speaker line that is to be monitored must be calibrated.
When calibration is carried out, the amplifier makes an initial measurement of the speaker line to check whether the line load is within acceptable limits.
The calibration values are used as a reference and are compared with later speaker line measurements for any significant changes that will cause line fault reporting.
After the calibration, the speaker line load must not be changed, or else false fault messages may be reported.

Channel 1/Channel 2 options:

  • Channel Enabled will disable/enable selected channel, this shutdowns/starts channel amplifier.
  • Master Volume in dB changes channel volume for digital audio
  • Monitor Mode can be Disabled, Manual for manual monitor triggering and Continuous for continuous monitoring
    • To get access to monitoring configuration options, either type of monitoring has to be enabled
    • In Manual Monitoring mode, the status of the line must be manually checked
    • In Continuous Monitoring mode, the status of the line is checked every 60 minutes. This includes changing status from ok to fault and from fault to ok.
  • Line Monitoring Speaker Line monitoring Enable/Disable.

To calibrate a speaker line:

  1. Select Monitor Mode either Continuous or Manual
  2. Enable Line Monitoring
  3. Click the Calibrate button
  4. Ensure the Calibrated status is displaying calibrated. Unknown, Short or Open status will not allow the speaker monitoring to start.


Line In options:

  • Line In Type selects which input is used for audio input: Line Input or Microphone.
  • Impedance changes line in impedance. Options are "600 Ohms" or "High".
  • Gain changes line in gain (0 - 47 dB)
  • Phantom Microphone (only available when Line In Type is Microphone Input) enables phantom power for microphone


The four benchmarks for the evaluation of line state is Voltage, Current, Phase and Ground Fault.

The values measured on Voltage, Current and Phase will together provide an evaluation of the line state regarding whether it is Shorted, Open or OK.

Typical SLM values for a 100 m line with 15W speaker load, calibrated values and various Shorted, Open and Ground Fault situations are as follows:

Calibration OK Shorted @ENA Shorted @100M Open @ENA Open @100M Ground Fault
Voltage 985 403 403 780 1015 400..1500
Current 1045 1370 1365 435 1065 400..1500
Phase 1075 765 925 1545 975 400..1500
Ground Fault 405 405 405 405 405 1580