NBM-580 The NBM-580 collects the measurement values from up to eight spatially distributed measurement stations, records them continuously, and triggers alarms if limit values are exceeded. Nardalert S3 monitors can be used for as measuring stations monitoring limit values on e.g. transmitter equipment or in industrial environments. The Narda Broadband Field Meter NBM-520 with its measuring probes is suitable for more precise monitoring. The NBM-580 manages all the data centrally. It can be shown directly on the screen, output via IEEE-488 or remotely downloaded by Ethernet. Up to eight Nardalert S3 or NBM-520 (or a combination of both) can be connected at distances of several tens to hundreds of meters. Four optical and four USB inputs are provided for this purpose. Low and high current alarm relays are also built in.