Accessories
The SV-200MA Surveillance Board consists of an SV-200M board and an SV extension board to be used in combination. Installing the SV-200MA board inside the VM-2120 or VM-2240 amplifier adds the following functions to the VM amplifier's functions.
| Specification | |
|---|---|
| Control Input and Output | Failure Detection Speaker Line Surveillance Input: (1) Speaker line initial setting activation signal (2) Speaker line surveillance activation signal Output: (1) Monitoring short or open of individual speaker line (zone 1 – 5) (2) Ground fault (insulation resistance: under 50 kΩ) (3) Power amplifier failures Input/Output (1) Speaker Zone information/selection (2) Power amplifier fault link |
| Power amplifier failure | 20 kHz pilot tone detection |
| Speaker line failure | 40 Hz impedance detection Speaker lines are automatically monitored at set time |
| intervals |
The VM-2120 is a multifunctional amplifier that can be mounted in an EIA-Standard equipment rack (3-unit size). The unit comes with 4 audio inputs including the background music input, and the speaker output section which has an internal attenuator and 5-zone selector. It permits not only general-purpose broadcast, but also Emergency Broadcast based on the EN60849 Standard which gives pre-recorded voice instructions(*1) in the emergency situation. Broadcast can be made from an optional RM-200M Remote Microphone as well as from the amplifier, and can be remotely controlled from external equipment. In addition, for 100 V/83 Ω application the unit features the surveillance function(*2) which automatically checks the system for failures. (*1) An optional EV-200M Voice Announcement Board is required. (*2) An optional SV-200MA Surveillance Board is required.
The VM-2240 is a multifunctional amplifier that can be mounted in an EIA-Standard equipment rack (3-unit size). The unit comes with 4 audio inputs including the background music input, and the speaker output section which has an internal attenuator and 5-zone selector. It permits not only general-purpose broadcast, but also Emergency Broadcast based on the EN 60849 Standard which gives pre-recorded voice instructions(*1) in the emergency situation. Broadcast can be made from an optional RM-200M Remote Microphone as well as from the amplifier, and can be remotely controlled from external equipment. In addition, for 100 V/83 Ω application the unit features the surveillance function(*2) which automatically checks the system for failures. (*1) An optional EV-200M Voice Announcement Board is required. (*2) An optional SV-200MA Surveillance Board is required.
