Description
LM 08 Line Supervisory Unit
Features:
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Built-in pilot tone signal generator
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High precision line drivers enable accurate measurement of the loudspeaker line impedance up to a maximum distance of 1 km.
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Impedance checking method allows for branching of loudspeaker lines without the need for end-line resistors and DC-blocking capacitors.
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Allows for monitoring of loudspeaker line beyond the audio attenuator.
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Automatically isolates shorted loudspeaker line from the power amplifier to prevent damage.
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Visual and aural indicators for line faults (Short, Open, Ground Leak).
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Multiple units can be cascaded, allowing for backup ratio of 16:1, 24:1 or more, up to 64:1.
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Maximum power handling of 500 W (rated at 100 V) per channel.
The LM 08 Line Supervisory Unit provides real-time monitoring and surveillance for 8 loudspeaker lines, up to a distance of 1 km, monitoring for short circuits, open circuits and ground leaks. Utilising impedance checking methodology, the unit allows for monitoring of branched loudspeaker network and audio attenuator insertion with minimal setup requirements. An LCD display provides a simple user-friendly interface for setup and monitoring. The unit is capable of interfacing with other equipment via RS 485 for remote monitoring, fault event logging and fault notification.
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