SV-200MA SURVEILLANCE BOARD TOA

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Product number: 164512

SURVEILLANCE BOARD FOR VM-2000

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.

19,500.00 ден

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Features

Permits monitoring of individual speaker line or power amplifier failures for status indication
Enables the VM amplifier to bypass external attenuators on individual zone calls
Backup amplifier function
Control inputs and outputs corresponding to individual zone selection status

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