SV-200MA Surveillance Board

  • Overview
  • Specification
  • Downloads

  • 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.

    • 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
    Power Source 24 V DC
    Current Consumption 120 mA
    Control Input and Output Input: No-voltage make contact input, open voltage: 3.3 V DC,
    short-circuit current: 1 mA or less
    (1) Speaker line initial setting activation signal
    (2) Speaker line surveillance activation signal
    Output: Open collector output, withstand voltage: 30 V DC,
    control current: 10 mA or less
    (1) Monitoring short or open of individual speaker line (zone 1 – 5)
    (2) Ground fault (insulation resistance: 50 kΩ or less)
    (3) Power amplifier failures
    Input/Output
    Input: No-voltage make contact input, open voltage: 24 V DC,
    short-circuit current: 60 mA or less
    Output: Open collector output, withstand voltage: 24 V DC (used with VM 24 V DC output),
    control current: 20 mA or less
    (1) Speaker Zone information/selection
    (2) Power amplifier fault link
    Connector: D-sub connector (25-pin, female)
    Failure Detection Power amplifier failure: 20 kHz pilot tone detection
    Speaker line failure: 40 Hz impedance detection (Detectable minimum load: 5 W)
    Speaker Line Surveillance Speaker lines are automatically monitored at set time intervals
    Set Time (10 – 60 min, at 10 min intervals)
    Operating Temperature 0 ℃ to +50 ℃
    Operating Humidity 90 % RH or less (must be free from dew condition)
    Dimensions 90 (W) × 20.6 (H) × 157 (D) mm
    Weight 140 g
    Accessory Flat cable …2


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