Difference between revisions of "ENA2060 Amplifier - Speaker Line Monitoring"
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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. | ||
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'''Channel 1'''/'''Channel 2''' options: | '''Channel 1'''/'''Channel 2''' options: | ||
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* '''Monitor Mode''' can be '''Disabled''', '''Manual''' for manual monitor triggering and '''Continuous''' for continuous monitoring | * '''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 | ** To get access to monitoring configuration options, either type of monitoring has to be enabled | ||
| + | * '''Line Monitoring''' Speaker Line monitoring Enable/Disable. | ||
| + | |||
| + | To calibrate a speaker line: | ||
| + | # Click either '''Set Continuous''' or '''Set Manual''' button | ||
| + | # Enable '''Line Monitoring''' | ||
| + | # Click the '''Calibrate''' button | ||
| + | |||
'''Line In''' options: | '''Line In''' options: | ||
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* '''Phantom Microphone''' (only available when Line In Type is '''Microphone Input''') enables phantom power for microphone | * '''Phantom Microphone''' (only available when Line In Type is '''Microphone Input''') enables phantom power for microphone | ||
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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. | ||
Revision as of 13:12, 19 December 2019
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
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
- Line Monitoring Speaker Line monitoring Enable/Disable.
To calibrate a speaker line:
- Click either Set Continuous or Set Manual button
- Enable Line Monitoring
- Click the Calibrate button
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 |