Difference between revisions of "ENA Amplifier - Calibrating the loudspeaker lines"
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− | The ENA amplifier can monitor impedance changes on each channel. This is used to detect fault such as load change, open/short and ground faults | + | The ENA amplifier can monitor impedance changes on each channel. This is used to detect fault such as load change, open/short and ground faults. |
− | In order to make the Line Monitoring work, the speaker line | + | * '''Load Change:''' Exigo considers a change of more than 15% a load change. This is done to prevent false fault reports due to variations in temperature, speaker loop configurations etc. Can be individually turned on or off. |
− | * From the | + | * '''Open:''' If more than 90% of the load is removed Exigo will detect the line as open. |
− | * From the web interface | + | * '''Short:''' A large load change indicating a large additional load will be considered a short. |
+ | * '''Ground fault:''' Any ground fault will be detected. Can be individually turned on or off. | ||
+ | |||
+ | In order to make the Line Monitoring work, the speaker line '''must be calibrated'''. This can be done in two ways: | ||
+ | * From the web interface of the amplifier, or | ||
+ | * From the Amplifier GUI | ||
+ | |||
+ | |||
+ | == Calibration from the amplifier web interface == | ||
+ | Enable monitoring in [[ENA_Configuration_-_AlphaCom_mode#Line_Control|Monitoring and Lines > Line Control > Channel 1/2 > Line Monitoring]]: | ||
+ | * Set '''Monitoring Mode''' to "Continous" or "Manual" | ||
+ | * Enable '''LET Monitoring''' and/or '''Line Monitoring''' | ||
The option ''Suspend Monitoring'' will turn off monitoring when there is audio on the channel output. | The option ''Suspend Monitoring'' will turn off monitoring when there is audio on the channel output. | ||
+ | |||
+ | [[File:ENA Web Calibration.PNG|thumb|left|500px|Calibration from web interface]] | ||
+ | <br style="clear:both;" /> | ||
+ | |||
+ | * '''Calibration Info''' - This information is only available when channel monitoring is '''enabled, configured and saved''' | ||
+ | ** '''Calibrate''' command ('''35 seconds''' timeout) will execute channel calibration | ||
+ | ** '''Reset Calibration''' ('''3 seconds''' timeout) will reset channel calibration | ||
+ | ** '''Measure''' ('''60 second''' timeout, only available if '''Monitor Mode''' is '''Manual''' and channel is successfully calibrated) will manual monitor channel for 60 seconds and report any faults detected | ||
+ | |||
== Calibration from the amplifier GUI == | == Calibration from the amplifier GUI == | ||
+ | {{note|This option is not available for the [[ENA2100-AC Amplifier]].}} | ||
+ | |||
Use the [[ENA User Interface|Menu Selection Knob]] on the front of the amplifier, and navigate to '''Settings''' > '''Audio Output Monitoring'''. | Use the [[ENA User Interface|Menu Selection Knob]] on the front of the amplifier, and navigate to '''Settings''' > '''Audio Output Monitoring'''. | ||
− | + | [[File:Line monitoring 2.png|thumb|left|500px|ENA GUI - Audio Output Monitoring]] | |
− | + | <br style="clear:both;" /> | |
− | + | ||
− | + | Selecting '''Audio Output Monitoring''' will give you this sub menu: | |
+ | |||
+ | [[File:Line monitoring 3.png|thumb|left|500px|ENA GUI - Audio Channel Settings]] | ||
+ | <br style="clear:both;" /> | ||
+ | |||
+ | Select '''Monitor''' will give you this sub menu: | ||
+ | |||
+ | [[File:Line monitoring 4.png|thumb|left|800px|ENA GUI - Calibrate]] | ||
+ | <br style="clear:both;" /> | ||
+ | |||
+ | Here you select '''Calibrate'''. The speaker loop is now monitored.<br> | ||
+ | Repeat the procedure for the second channel if in use<br> | ||
+ | |||
+ | |||
− | + | [[Category: Public Address - Features and configuration]] |
Revision as of 14:45, 4 January 2019
The ENA amplifier can monitor impedance changes on each channel. This is used to detect fault such as load change, open/short and ground faults.
- Load Change: Exigo considers a change of more than 15% a load change. This is done to prevent false fault reports due to variations in temperature, speaker loop configurations etc. Can be individually turned on or off.
- Open: If more than 90% of the load is removed Exigo will detect the line as open.
- Short: A large load change indicating a large additional load will be considered a short.
- Ground fault: Any ground fault will be detected. Can be individually turned on or off.
In order to make the Line Monitoring work, the speaker line must be calibrated. This can be done in two ways:
- From the web interface of the amplifier, or
- From the Amplifier GUI
Calibration from the amplifier web interface
Enable monitoring in Monitoring and Lines > Line Control > Channel 1/2 > Line Monitoring:
- Set Monitoring Mode to "Continous" or "Manual"
- Enable LET Monitoring and/or Line Monitoring
The option Suspend Monitoring will turn off monitoring when there is audio on the channel output.
- Calibration Info - This information is only available when channel monitoring is enabled, configured and saved
- Calibrate command (35 seconds timeout) will execute channel calibration
- Reset Calibration (3 seconds timeout) will reset channel calibration
- Measure (60 second timeout, only available if Monitor Mode is Manual and channel is successfully calibrated) will manual monitor channel for 60 seconds and report any faults detected
Calibration from the amplifier GUI
This option is not available for the ENA2100-AC Amplifier. |
Use the Menu Selection Knob on the front of the amplifier, and navigate to Settings > Audio Output Monitoring.
Selecting Audio Output Monitoring will give you this sub menu:
Select Monitor will give you this sub menu:
Here you select Calibrate. The speaker loop is now monitored.
Repeat the procedure for the second channel if in use